1.26.x (#17)

* Upgrade to go 1.26.3

* Update dependencies

* Update actions

.github/workflows/compile-shared-libraries.yml

@@ -7,15 +7,18 @@ jobs:
   build:
     runs-on: ubuntu-latest
 
+    outputs:
+      artifact: shared-libraries
+
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v6
 
       - name: Cross-Compile with xgo
-        uses: crazy-max/ghaction-xgo@v3.1.0
+        uses: crazy-max/ghaction-xgo@de82f877ff4552f03b66c146f608233849e9c3dc # v4.0.0
         with:
           xgo_version: latest
-          go_version: 1.24.0
+          go_version: 1.26.3
           dest: dist
           pkg: sharedlibrary
           prefix: cosmium
@@ -25,7 +28,62 @@ jobs:
           buildvcs: true
 
       - name: Upload artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: shared-libraries
           path: dist/*
+
+  test:
+    needs: build
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - os: ubuntu-latest
+            lib_ext: amd64.so
+          - os: windows-latest
+            lib_ext: amd64.dll
+          - os: macos-latest
+            lib_ext: arm64.dylib
+
+    steps:
+      - uses: actions/checkout@v6
+
+      - name: Download shared libraries
+        uses: actions/download-artifact@v8
+        with:
+          name: shared-libraries
+          path: libs
+
+      - name: Install MinGW (GCC) on Windows
+        if: runner.os == 'Windows'
+        run: choco install mingw --no-progress
+
+      - name: Build test loader (Windows)
+        if: runner.os == 'Windows'
+        run: |
+          mkdir build
+          gcc -Wall -o build/test_loader.exe sharedlibrary/tests/*.c
+
+      - name: Build test loader (Unix)
+        if: runner.os != 'Windows'
+        run: |
+          mkdir build
+          gcc -Wall -ldl -o build/test_loader sharedlibrary/tests/*.c
+
+      - name: Run test (Unix)
+        if: runner.os != 'Windows'
+        run: |
+          LIB=$(ls libs/*${{ matrix.lib_ext }} | head -n 1)
+          echo "Testing library: $LIB"
+          chmod +x build/test_loader
+          ./build/test_loader "$LIB"
+
+      - name: Run test (Windows)
+        if: runner.os == 'Windows'
+        shell: pwsh
+        run: |
+          $lib = Get-ChildItem "libs/*${{ matrix.lib_ext }}" | Select-Object -First 1
+          Write-Host "Testing library: $($lib.FullName)"
+          .\build\test_loader.exe $lib.FullName

.github/workflows/release.yml

@@ -3,7 +3,7 @@ name: goreleaser
 on:
   push:
     tags:
-      - '*'
+      - "*"
 
 permissions:
   contents: write
@@ -14,20 +14,20 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
       - name: Set up Go
         uses: actions/setup-go@v5
         with:
-          go-version: 1.24.0
+          go-version: 1.26.3
 
       - name: Cross-Compile with xgo
-        uses: crazy-max/ghaction-xgo@v3.1.0
+        uses: crazy-max/ghaction-xgo@de82f877ff4552f03b66c146f608233849e9c3dc # v4.0.0
         with:
           xgo_version: latest
-          go_version: 1.24.0
+          go_version: 1.26.3
           dest: sharedlibrary_dist
           pkg: sharedlibrary
           prefix: cosmium
@@ -44,7 +44,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Run GoReleaser
-        uses: goreleaser/goreleaser-action@v5
+        uses: goreleaser/goreleaser-action@5742e2a039330cbb23ebf35f046f814d4c6ff811 # v5
         with:
           distribution: goreleaser
           version: ${{ env.GITHUB_REF_NAME }}

Makefile

@@ -9,7 +9,7 @@ SERVER_LOCATION=./cmd/server
 SHARED_LIB_LOCATION=./sharedlibrary
 SHARED_LIB_OPT=-buildmode=c-shared
 XGO_TARGETS=linux/amd64,linux/arm64,windows/amd64,windows/arm64,darwin/amd64,darwin/arm64
-GOVERSION=1.24.0
+GOVERSION=1.26.3
 
 DIST_DIR=dist
 
@@ -51,6 +51,10 @@ build-sharedlib-linux-amd64:
 	@echo "Building shared library for Linux x64..."
 	@GOOS=linux GOARCH=amd64 $(GOBUILD) $(SHARED_LIB_OPT) -o $(DIST_DIR)/$(BINARY_NAME)-linux-amd64.so $(SHARED_LIB_LOCATION)
 
+build-sharedlib-darwin-arm64:
+	@echo "Building shared library for macOS ARM..."
+	@GOOS=darwin GOARCH=arm64 $(GOBUILD) $(SHARED_LIB_OPT) -o $(DIST_DIR)/$(BINARY_NAME)-darwin-arm64.so $(SHARED_LIB_LOCATION)
+
 build-sharedlib-tests: build-sharedlib-linux-amd64
 	@echo "Building shared library tests..."
 	@$(SHARED_LIB_TEST_CC) $(SHARED_LIB_TEST_CFLAGS) -o $(SHARED_LIB_TEST_TARGET) $(SHARED_LIB_TEST_SOURCES)

README.md

@@ -64,7 +64,8 @@ There are two docker tags available:
 If you wan to run the application using docker, configure it using environment variables see example:
 
 ```sh
-docker run --rm \
+# Ensure save.json exists so Docker volume mounts correctly
+[ -f save.json ] || echo '{}' > save.json && docker run --rm \
   -e COSMIUM_PERSIST=/save.json \
   -v ./save.json:/save.json \
   -p 8081:8081 \
@@ -86,6 +87,7 @@ To disable SSL and run Cosmium on HTTP instead, you can use the `-DisableTls` fl
 - **-Persist**: Saves data to the given path on application exit (When `-InitialData` argument is not supplied, it will try to load data from path supplied in `-Persist`)
 - **-Port**: Listen port (default 8081)
 - **-LogLevel**: Sets the logging level (one of: debug, info, error, silent) (default info)
+- **-DataStore**: Allows selecting [storage backend](#data-storage-backends) (default "json")
 
 These arguments allow you to configure various aspects of Cosmium's behavior according to your requirements.
 
@@ -99,6 +101,18 @@ All mentioned arguments can also be set using environment variables:
 - **COSMIUM_PORT** for `-Port`
 - **COSMIUM_LOGLEVEL** for `-LogLevel`
 
+### Data Storage Backends
+
+Cosmium supports multiple storage backends for saving, loading, and managing data at runtime.
+
+| Backend  | Storage Location         | Write Behavior           | Memory Usage         |
+|----------|--------------------------|--------------------------|----------------------|
+| `json` (default) | JSON file on disk 📄 | On application exit ⏳ | 🛑 More than Badger |
+| `badger`  | BadgerDB database on disk ⚡ | Immediately on write 🚀 | ✅ Less than JSON  |
+
+
+The `badger` backend is generally recommended as it uses less memory and writes data to disk immediately. However, if you need to load initial data from a JSON file, use the `json` backend.
+
 # License
 
 This project is [MIT licensed](./LICENSE).

api/api_server.go

@@ -3,7 +3,7 @@ package api
 import (
 	"github.com/gin-gonic/gin"
 	"github.com/pikami/cosmium/api/config"
-	"github.com/pikami/cosmium/internal/repositories"
+	"github.com/pikami/cosmium/internal/datastore"
 )
 
 type ApiServer struct {
@@ -11,10 +11,10 @@ type ApiServer struct {
 	onServerShutdown chan interface{}
 	isActive         bool
 	router           *gin.Engine
-	config           config.ServerConfig
+	config           *config.ServerConfig
 }
 
-func NewApiServer(dataRepository *repositories.DataRepository, config config.ServerConfig) *ApiServer {
+func NewApiServer(dataStore datastore.DataStore, config *config.ServerConfig) *ApiServer {
 	stopChan := make(chan interface{})
 	onServerShutdownChan := make(chan interface{})
 
@@ -24,7 +24,7 @@ func NewApiServer(dataRepository *repositories.DataRepository, config config.Ser
 		config:           config,
 	}
 
-	apiServer.CreateRouter(dataRepository)
+	apiServer.CreateRouter(dataStore)
 
 	return apiServer
 }

api/config/config.go

@@ -15,9 +15,15 @@ const (
 	ExplorerBaseUrlLocation = "/_explorer"
 )
 
+const (
+	DataStoreJson   = "json"
+	DataStoreBadger = "badger"
+)
+
 func ParseFlags() ServerConfig {
 	host := flag.String("Host", "localhost", "Hostname")
 	port := flag.Int("Port", 8081, "Listen port")
+	rntbdPort := flag.Int("RntbdPort", 10000, "RNTBD listen port")
 	explorerPath := flag.String("ExplorerDir", "", "Path to cosmos-explorer files")
 	tlsCertificatePath := flag.String("Cert", "", "Hostname")
 	tlsCertificateKey := flag.String("CertKey", "", "Hostname")
@@ -28,6 +34,9 @@ func ParseFlags() ServerConfig {
 	persistDataPath := flag.String("Persist", "", "Saves data to given path on application exit")
 	logLevel := NewEnumValue("info", []string{"debug", "info", "error", "silent"})
 	flag.Var(logLevel, "LogLevel", fmt.Sprintf("Sets the logging level %s", logLevel.AllowedValuesList()))
+	dataStore := NewEnumValue("json", []string{DataStoreJson, DataStoreBadger})
+	flag.Var(dataStore, "DataStore", fmt.Sprintf("Sets the data store %s", dataStore.AllowedValuesList()))
+	enableRntbd := flag.Bool("ExperimentalEnableRntbd", false, "EXPERIMENTAL: Enable RNTBD (CosmosDB Direct Connection Mode)")
 
 	flag.Parse()
 	setFlagsFromEnvironment()
@@ -35,6 +44,7 @@ func ParseFlags() ServerConfig {
 	config := ServerConfig{}
 	config.Host = *host
 	config.Port = *port
+	config.RntbdPort = *rntbdPort
 	config.ExplorerPath = *explorerPath
 	config.TLS_CertificatePath = *tlsCertificatePath
 	config.TLS_CertificateKey = *tlsCertificateKey
@@ -44,6 +54,8 @@ func ParseFlags() ServerConfig {
 	config.DisableTls = *disableTls
 	config.AccountKey = *accountKey
 	config.LogLevel = logLevel.value
+	config.DataStore = dataStore.value
+	config.EnableRntbd = *enableRntbd
 
 	config.PopulateCalculatedFields()
 
@@ -54,6 +66,7 @@ func (c *ServerConfig) PopulateCalculatedFields() {
 	c.DatabaseAccount = c.Host
 	c.DatabaseDomain = c.Host
 	c.DatabaseEndpoint = fmt.Sprintf("https://%s:%d/", c.Host, c.Port)
+	c.RntbdEndpoint = fmt.Sprintf("rntbd://%s:%d/", c.Host, c.RntbdPort)
 	c.ExplorerBaseUrlLocation = ExplorerBaseUrlLocation
 
 	switch c.LogLevel {
@@ -68,6 +81,24 @@ func (c *ServerConfig) PopulateCalculatedFields() {
 	default:
 		logger.SetLogLevel(logger.LogLevelInfo)
 	}
+
+	fileInfo, err := os.Stat(c.PersistDataFilePath)
+	if c.PersistDataFilePath != "" && !os.IsNotExist(err) {
+		if err != nil {
+			logger.ErrorLn("Failed to get file info for persist path:", err)
+			os.Exit(1)
+		}
+
+		if c.DataStore == DataStoreJson && fileInfo.IsDir() {
+			logger.ErrorLn("--Persist cannot be a directory when using json data store")
+			os.Exit(1)
+		}
+
+		if c.DataStore == DataStoreBadger && !fileInfo.IsDir() {
+			logger.ErrorLn("--Persist must be a directory when using Badger data store")
+			os.Exit(1)
+		}
+	}
 }
 
 func (c *ServerConfig) ApplyDefaultsToEmptyFields() {

api/config/models.go

@@ -4,10 +4,12 @@ type ServerConfig struct {
 	DatabaseAccount  string `json:"databaseAccount"`
 	DatabaseDomain   string `json:"databaseDomain"`
 	DatabaseEndpoint string `json:"databaseEndpoint"`
+	RntbdEndpoint    string `json:"rntbdEndpoint"`
 	AccountKey       string `json:"accountKey"`
 
 	ExplorerPath            string `json:"explorerPath"`
 	Port                    int    `json:"port"`
+	RntbdPort               int    `json:"rntbdPort"`
 	Host                    string `json:"host"`
 	TLS_CertificatePath     string `json:"tlsCertificatePath"`
 	TLS_CertificateKey      string `json:"tlsCertificateKey"`
@@ -17,4 +19,7 @@ type ServerConfig struct {
 	DisableTls              bool   `json:"disableTls"`
 	LogLevel                string `json:"logLevel"`
 	ExplorerBaseUrlLocation string `json:"explorerBaseUrlLocation"`
+	EnableRntbd             bool   `json:"enableRntbd"`
+
+	DataStore string `json:"dataStore"`
 }

api/handlers/collections.go

@@ -5,17 +5,19 @@ import (
 	"net/http"
 
 	"github.com/gin-gonic/gin"
-	repositorymodels "github.com/pikami/cosmium/internal/repository_models"
+	"github.com/pikami/cosmium/api/headers"
+	"github.com/pikami/cosmium/internal/constants"
+	"github.com/pikami/cosmium/internal/datastore"
 )
 
 func (h *Handlers) GetAllCollections(c *gin.Context) {
 	databaseId := c.Param("databaseId")
 
-	collections, status := h.repository.GetAllCollections(databaseId)
-	if status == repositorymodels.StatusOk {
-		database, _ := h.repository.GetDatabase(databaseId)
+	collections, status := h.dataStore.GetAllCollections(databaseId)
+	if status == datastore.StatusOk {
+		database, _ := h.dataStore.GetDatabase(databaseId)
 
-		c.Header("x-ms-item-count", fmt.Sprintf("%d", len(collections)))
+		c.Header(headers.ItemCount, fmt.Sprintf("%d", len(collections)))
 		c.IndentedJSON(http.StatusOK, gin.H{
 			"_rid":                database.ResourceID,
 			"DocumentCollections": collections,
@@ -24,48 +26,48 @@ func (h *Handlers) GetAllCollections(c *gin.Context) {
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }
 
 func (h *Handlers) GetCollection(c *gin.Context) {
 	databaseId := c.Param("databaseId")
 	id := c.Param("collId")
 
-	collection, status := h.repository.GetCollection(databaseId, id)
-	if status == repositorymodels.StatusOk {
+	collection, status := h.dataStore.GetCollection(databaseId, id)
+	if status == datastore.StatusOk {
 		c.IndentedJSON(http.StatusOK, collection)
 		return
 	}
 
-	if status == repositorymodels.StatusNotFound {
-		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
+	if status == datastore.StatusNotFound {
+		c.IndentedJSON(http.StatusNotFound, constants.NotFoundResponse)
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }
 
 func (h *Handlers) DeleteCollection(c *gin.Context) {
 	databaseId := c.Param("databaseId")
 	id := c.Param("collId")
 
-	status := h.repository.DeleteCollection(databaseId, id)
-	if status == repositorymodels.StatusOk {
+	status := h.dataStore.DeleteCollection(databaseId, id)
+	if status == datastore.StatusOk {
 		c.Status(http.StatusNoContent)
 		return
 	}
 
-	if status == repositorymodels.StatusNotFound {
-		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
+	if status == datastore.StatusNotFound {
+		c.IndentedJSON(http.StatusNotFound, constants.NotFoundResponse)
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }
 
 func (h *Handlers) CreateCollection(c *gin.Context) {
 	databaseId := c.Param("databaseId")
-	var newCollection repositorymodels.Collection
+	var newCollection datastore.Collection
 
 	if err := c.BindJSON(&newCollection); err != nil {
 		c.JSON(http.StatusBadRequest, gin.H{"message": err.Error()})
@@ -73,20 +75,20 @@ func (h *Handlers) CreateCollection(c *gin.Context) {
 	}
 
 	if newCollection.ID == "" {
-		c.JSON(http.StatusBadRequest, gin.H{"message": "BadRequest"})
+		c.JSON(http.StatusBadRequest, constants.BadRequestResponse)
 		return
 	}
 
-	createdCollection, status := h.repository.CreateCollection(databaseId, newCollection)
-	if status == repositorymodels.Conflict {
-		c.IndentedJSON(http.StatusConflict, gin.H{"message": "Conflict"})
+	createdCollection, status := h.dataStore.CreateCollection(databaseId, newCollection)
+	if status == datastore.Conflict {
+		c.IndentedJSON(http.StatusConflict, constants.ConflictResponse)
 		return
 	}
 
-	if status == repositorymodels.StatusOk {
+	if status == datastore.StatusOk {
 		c.IndentedJSON(http.StatusCreated, createdCollection)
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }

api/handlers/cosmium.go

@@ -7,11 +7,11 @@ import (
 )
 
 func (h *Handlers) CosmiumExport(c *gin.Context) {
-	repositoryState, err := h.repository.GetState()
+	dataStoreState, err := h.dataStore.DumpToJson()
 	if err != nil {
 		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
 		return
 	}
 
-	c.Data(http.StatusOK, "application/json", []byte(repositoryState))
+	c.Data(http.StatusOK, "application/json", []byte(dataStoreState))
 }

api/handlers/databases.go

@@ -5,13 +5,15 @@ import (
 	"net/http"
 
 	"github.com/gin-gonic/gin"
-	repositorymodels "github.com/pikami/cosmium/internal/repository_models"
+	"github.com/pikami/cosmium/api/headers"
+	"github.com/pikami/cosmium/internal/constants"
+	"github.com/pikami/cosmium/internal/datastore"
 )
 
 func (h *Handlers) GetAllDatabases(c *gin.Context) {
-	databases, status := h.repository.GetAllDatabases()
-	if status == repositorymodels.StatusOk {
-		c.Header("x-ms-item-count", fmt.Sprintf("%d", len(databases)))
+	databases, status := h.dataStore.GetAllDatabases()
+	if status == datastore.StatusOk {
+		c.Header(headers.ItemCount, fmt.Sprintf("%d", len(databases)))
 		c.IndentedJSON(http.StatusOK, gin.H{
 			"_rid":      "",
 			"Databases": databases,
@@ -20,45 +22,45 @@ func (h *Handlers) GetAllDatabases(c *gin.Context) {
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }
 
 func (h *Handlers) GetDatabase(c *gin.Context) {
 	id := c.Param("databaseId")
 
-	database, status := h.repository.GetDatabase(id)
-	if status == repositorymodels.StatusOk {
+	database, status := h.dataStore.GetDatabase(id)
+	if status == datastore.StatusOk {
 		c.IndentedJSON(http.StatusOK, database)
 		return
 	}
 
-	if status == repositorymodels.StatusNotFound {
-		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
+	if status == datastore.StatusNotFound {
+		c.IndentedJSON(http.StatusNotFound, constants.NotFoundResponse)
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }
 
 func (h *Handlers) DeleteDatabase(c *gin.Context) {
 	id := c.Param("databaseId")
 
-	status := h.repository.DeleteDatabase(id)
-	if status == repositorymodels.StatusOk {
+	status := h.dataStore.DeleteDatabase(id)
+	if status == datastore.StatusOk {
 		c.Status(http.StatusNoContent)
 		return
 	}
 
-	if status == repositorymodels.StatusNotFound {
-		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
+	if status == datastore.StatusNotFound {
+		c.IndentedJSON(http.StatusNotFound, constants.NotFoundResponse)
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }
 
 func (h *Handlers) CreateDatabase(c *gin.Context) {
-	var newDatabase repositorymodels.Database
+	var newDatabase datastore.Database
 
 	if err := c.BindJSON(&newDatabase); err != nil {
 		c.JSON(http.StatusBadRequest, gin.H{"message": err.Error()})
@@ -66,20 +68,20 @@ func (h *Handlers) CreateDatabase(c *gin.Context) {
 	}
 
 	if newDatabase.ID == "" {
-		c.JSON(http.StatusBadRequest, gin.H{"message": "BadRequest"})
+		c.JSON(http.StatusBadRequest, constants.BadRequestResponse)
 		return
 	}
 
-	createdDatabase, status := h.repository.CreateDatabase(newDatabase)
-	if status == repositorymodels.Conflict {
-		c.IndentedJSON(http.StatusConflict, gin.H{"message": "Conflict"})
+	createdDatabase, status := h.dataStore.CreateDatabase(newDatabase)
+	if status == datastore.Conflict {
+		c.IndentedJSON(http.StatusConflict, constants.ConflictResponse)
 		return
 	}
 
-	if status == repositorymodels.StatusOk {
+	if status == datastore.StatusOk {
 		c.IndentedJSON(http.StatusCreated, createdDatabase)
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }

api/handlers/documents.go

@@ -9,20 +9,26 @@ import (
 	jsonpatch "github.com/cosmiumdev/json-patch/v5"
 	"github.com/gin-gonic/gin"
 	apimodels "github.com/pikami/cosmium/api/api_models"
+	"github.com/pikami/cosmium/api/headers"
 	"github.com/pikami/cosmium/internal/constants"
+	continuationtoken "github.com/pikami/cosmium/internal/continuation_token"
+	"github.com/pikami/cosmium/internal/converters"
+	"github.com/pikami/cosmium/internal/datastore"
 	"github.com/pikami/cosmium/internal/logger"
-	repositorymodels "github.com/pikami/cosmium/internal/repository_models"
+	"github.com/pikami/cosmium/parsers"
+	"github.com/pikami/cosmium/parsers/nosql"
+	memoryexecutor "github.com/pikami/cosmium/query_executors/memory_executor"
 )
 
 func (h *Handlers) GetAllDocuments(c *gin.Context) {
 	databaseId := c.Param("databaseId")
 	collectionId := c.Param("collId")
 
-	documents, status := h.repository.GetAllDocuments(databaseId, collectionId)
-	if status == repositorymodels.StatusOk {
-		collection, _ := h.repository.GetCollection(databaseId, collectionId)
+	documents, status := h.dataStore.GetAllDocuments(databaseId, collectionId)
+	if status == datastore.StatusOk {
+		collection, _ := h.dataStore.GetCollection(databaseId, collectionId)
 
-		c.Header("x-ms-item-count", fmt.Sprintf("%d", len(documents)))
+		c.Header(headers.ItemCount, fmt.Sprintf("%d", len(documents)))
 		c.IndentedJSON(http.StatusOK, gin.H{
 			"_rid":      collection.ID,
 			"Documents": documents,
@@ -31,7 +37,7 @@ func (h *Handlers) GetAllDocuments(c *gin.Context) {
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }
 
 func (h *Handlers) GetDocument(c *gin.Context) {
@@ -39,18 +45,21 @@ func (h *Handlers) GetDocument(c *gin.Context) {
 	collectionId := c.Param("collId")
 	documentId := c.Param("docId")
 
-	document, status := h.repository.GetDocument(databaseId, collectionId, documentId)
-	if status == repositorymodels.StatusOk {
+	document, status := h.dataStore.GetDocument(databaseId, collectionId, documentId)
+	if status == datastore.StatusOk {
+		if etag, ok := document["_etag"].(string); ok {
+			c.Header(headers.ETag, etag)
+		}
 		c.IndentedJSON(http.StatusOK, document)
 		return
 	}
 
-	if status == repositorymodels.StatusNotFound {
-		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
+	if status == datastore.StatusNotFound {
+		c.IndentedJSON(http.StatusNotFound, constants.NotFoundResponse)
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }
 
 func (h *Handlers) DeleteDocument(c *gin.Context) {
@@ -58,21 +67,21 @@ func (h *Handlers) DeleteDocument(c *gin.Context) {
 	collectionId := c.Param("collId")
 	documentId := c.Param("docId")
 
-	status := h.repository.DeleteDocument(databaseId, collectionId, documentId)
-	if status == repositorymodels.StatusOk {
+	status := h.dataStore.DeleteDocument(databaseId, collectionId, documentId)
+	if status == datastore.StatusOk {
 		c.Status(http.StatusNoContent)
 		return
 	}
 
-	if status == repositorymodels.StatusNotFound {
-		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
+	if status == datastore.StatusNotFound {
+		c.IndentedJSON(http.StatusNotFound, constants.NotFoundResponse)
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }
 
-// TODO: Maybe move "replace" logic to repository
+// TODO: Maybe move "replace" logic to data store
 func (h *Handlers) ReplaceDocument(c *gin.Context) {
 	databaseId := c.Param("databaseId")
 	collectionId := c.Param("collId")
@@ -84,24 +93,42 @@ func (h *Handlers) ReplaceDocument(c *gin.Context) {
 		return
 	}
 
-	status := h.repository.DeleteDocument(databaseId, collectionId, documentId)
-	if status == repositorymodels.StatusNotFound {
-		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
+	existingDocument, status := h.dataStore.GetDocument(databaseId, collectionId, documentId)
+	if status == datastore.StatusNotFound {
+		c.IndentedJSON(http.StatusNotFound, constants.NotFoundResponse)
+		return
+	}
+	if status != datastore.StatusOk {
+		c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 		return
 	}
 
-	createdDocument, status := h.repository.CreateDocument(databaseId, collectionId, requestBody)
-	if status == repositorymodels.Conflict {
-		c.IndentedJSON(http.StatusConflict, gin.H{"message": "Conflict"})
+	if ifMatch := c.GetHeader(headers.IfMatch); ifMatch != "" {
+		if existingDocument["_etag"] != ifMatch {
+			c.Header(headers.ErrorCode, "PreconditionFailed")
+			c.JSON(http.StatusPreconditionFailed, constants.PreconditionFailedResponse)
+			return
+		}
+	}
+
+	status = h.dataStore.DeleteDocument(databaseId, collectionId, documentId)
+	if status == datastore.StatusNotFound {
+		c.IndentedJSON(http.StatusNotFound, constants.NotFoundResponse)
 		return
 	}
 
-	if status == repositorymodels.StatusOk {
+	createdDocument, status := h.dataStore.CreateDocument(databaseId, collectionId, requestBody)
+	if status == datastore.Conflict {
+		c.IndentedJSON(http.StatusConflict, constants.ConflictResponse)
+		return
+	}
+
+	if status == datastore.StatusOk {
 		c.IndentedJSON(http.StatusCreated, createdDocument)
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }
 
 func (h *Handlers) PatchDocument(c *gin.Context) {
@@ -109,9 +136,9 @@ func (h *Handlers) PatchDocument(c *gin.Context) {
 	collectionId := c.Param("collId")
 	documentId := c.Param("docId")
 
-	document, status := h.repository.GetDocument(databaseId, collectionId, documentId)
-	if status == repositorymodels.StatusNotFound {
-		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
+	document, status := h.dataStore.GetDocument(databaseId, collectionId, documentId)
+	if status == datastore.StatusNotFound {
+		c.IndentedJSON(http.StatusNotFound, constants.NotFoundResponse)
 		return
 	}
 
@@ -160,24 +187,24 @@ func (h *Handlers) PatchDocument(c *gin.Context) {
 		return
 	}
 
-	status = h.repository.DeleteDocument(databaseId, collectionId, documentId)
-	if status == repositorymodels.StatusNotFound {
-		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
+	status = h.dataStore.DeleteDocument(databaseId, collectionId, documentId)
+	if status == datastore.StatusNotFound {
+		c.IndentedJSON(http.StatusNotFound, constants.NotFoundResponse)
 		return
 	}
 
-	createdDocument, status := h.repository.CreateDocument(databaseId, collectionId, modifiedDocument)
-	if status == repositorymodels.Conflict {
-		c.IndentedJSON(http.StatusConflict, gin.H{"message": "Conflict"})
+	createdDocument, status := h.dataStore.CreateDocument(databaseId, collectionId, modifiedDocument)
+	if status == datastore.Conflict {
+		c.IndentedJSON(http.StatusConflict, constants.ConflictResponse)
 		return
 	}
 
-	if status == repositorymodels.StatusOk {
+	if status == datastore.StatusOk {
 		c.IndentedJSON(http.StatusCreated, createdDocument)
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }
 
 func (h *Handlers) DocumentsPost(c *gin.Context) {
@@ -185,7 +212,7 @@ func (h *Handlers) DocumentsPost(c *gin.Context) {
 	collectionId := c.Param("collId")
 
 	// Handle batch requests
-	isBatchRequest, _ := strconv.ParseBool(c.GetHeader("x-ms-cosmos-is-batch-request"))
+	isBatchRequest, _ := strconv.ParseBool(c.GetHeader(headers.IsBatchRequest))
 	if isBatchRequest {
 		h.handleBatchRequest(c)
 		return
@@ -197,34 +224,43 @@ func (h *Handlers) DocumentsPost(c *gin.Context) {
 		return
 	}
 
-	query := requestBody["query"]
-	if query != nil {
+	// Handle query plan requests
+	isQueryPlanRequest, _ := strconv.ParseBool(c.GetHeader(headers.IsQueryPlanRequest))
+	if isQueryPlanRequest {
+		c.IndentedJSON(http.StatusOK, constants.QueryPlanResponse)
+		return
+	}
+
+	// Handle query requests
+	isQueryRequest, _ := strconv.ParseBool(c.GetHeader(headers.IsQuery))
+	isQueryRequestAltHeader, _ := strconv.ParseBool(c.GetHeader(headers.Query))
+	if isQueryRequest || isQueryRequestAltHeader {
 		h.handleDocumentQuery(c, requestBody)
 		return
 	}
 
 	if requestBody["id"] == "" {
-		c.JSON(http.StatusBadRequest, gin.H{"message": "BadRequest"})
+		c.JSON(http.StatusBadRequest, constants.BadRequestResponse)
 		return
 	}
 
-	isUpsert, _ := strconv.ParseBool(c.GetHeader("x-ms-documentdb-is-upsert"))
+	isUpsert, _ := strconv.ParseBool(c.GetHeader(headers.IsUpsert))
 	if isUpsert {
-		h.repository.DeleteDocument(databaseId, collectionId, requestBody["id"].(string))
+		h.dataStore.DeleteDocument(databaseId, collectionId, requestBody["id"].(string))
 	}
 
-	createdDocument, status := h.repository.CreateDocument(databaseId, collectionId, requestBody)
-	if status == repositorymodels.Conflict {
-		c.IndentedJSON(http.StatusConflict, gin.H{"message": "Conflict"})
+	createdDocument, status := h.dataStore.CreateDocument(databaseId, collectionId, requestBody)
+	if status == datastore.Conflict {
+		c.IndentedJSON(http.StatusConflict, constants.ConflictResponse)
 		return
 	}
 
-	if status == repositorymodels.StatusOk {
+	if status == datastore.StatusOk {
 		c.IndentedJSON(http.StatusCreated, createdDocument)
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }
 
 func parametersToMap(pairs []interface{}) map[string]interface{} {
@@ -243,29 +279,55 @@ func (h *Handlers) handleDocumentQuery(c *gin.Context, requestBody map[string]in
 	databaseId := c.Param("databaseId")
 	collectionId := c.Param("collId")
 
-	if c.GetHeader("x-ms-cosmos-is-query-plan-request") != "" {
-		c.IndentedJSON(http.StatusOK, constants.QueryPlanResponse)
-		return
-	}
-
 	var queryParameters map[string]interface{}
 	if paramsArray, ok := requestBody["parameters"].([]interface{}); ok {
 		queryParameters = parametersToMap(paramsArray)
 	}
 
-	docs, status := h.repository.ExecuteQueryDocuments(databaseId, collectionId, requestBody["query"].(string), queryParameters)
-	if status != repositorymodels.StatusOk {
+	collection, collectionStatus := h.dataStore.GetCollection(databaseId, collectionId)
+	if collectionStatus == datastore.StatusNotFound {
+		c.IndentedJSON(http.StatusNotFound, constants.NotFoundResponse)
+		return
+	}
+
+	if collectionStatus != datastore.StatusOk {
+		c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
+		return
+	}
+
+	continuationToken := continuationtoken.GenerateDefault(collection.ResourceID)
+	continuationTokenHeader := c.GetHeader(headers.ContinuationToken)
+	if continuationTokenHeader != "" {
+		continuationToken = continuationtoken.FromString(continuationTokenHeader)
+	}
+
+	pageMaxItemCount, maxItemCountError := strconv.Atoi(c.GetHeader(headers.MaxItemCount))
+	if maxItemCountError != nil {
+		pageMaxItemCount = 1000
+	}
+
+	queryText := requestBody["query"].(string)
+	executeQueryResult, status := h.executeQueryDocuments(
+		databaseId, collectionId, queryText, queryParameters, pageMaxItemCount, continuationToken.Token.TotalResults)
+	if status != datastore.StatusOk {
 		// TODO: Currently we return everything if the query fails
+		logger.Infof("Query failed: %s", queryText)
 		h.GetAllDocuments(c)
 		return
 	}
 
-	collection, _ := h.repository.GetCollection(databaseId, collectionId)
-	c.Header("x-ms-item-count", fmt.Sprintf("%d", len(docs)))
+	resultCount := len(executeQueryResult.Rows)
+	if executeQueryResult.HasMorePages {
+		nextContinuationToken := continuationtoken.Generate(
+			collection.ResourceID, continuationToken.Token.PageIndex+1, continuationToken.Token.TotalResults+resultCount)
+		c.Header(headers.ContinuationToken, nextContinuationToken.ToString())
+	}
+
+	c.Header(headers.ItemCount, fmt.Sprintf("%d", resultCount))
 	c.IndentedJSON(http.StatusOK, gin.H{
 		"_rid":      collection.ResourceID,
-		"Documents": docs,
-		"_count":    len(docs),
+		"Documents": executeQueryResult.Rows,
+		"_count":    resultCount,
 	})
 }
 
@@ -283,9 +345,9 @@ func (h *Handlers) handleBatchRequest(c *gin.Context) {
 	for idx, operation := range batchOperations {
 		switch operation.OperationType {
 		case apimodels.BatchOperationTypeCreate:
-			createdDocument, status := h.repository.CreateDocument(databaseId, collectionId, operation.ResourceBody)
-			responseCode := repositoryStatusToResponseCode(status)
-			if status == repositorymodels.StatusOk {
+			createdDocument, status := h.dataStore.CreateDocument(databaseId, collectionId, operation.ResourceBody)
+			responseCode := dataStoreStatusToResponseCode(status)
+			if status == datastore.StatusOk {
 				responseCode = http.StatusCreated
 			}
 			batchOperationResults[idx] = apimodels.BatchOperationResult{
@@ -293,25 +355,25 @@ func (h *Handlers) handleBatchRequest(c *gin.Context) {
 				ResourceBody: createdDocument,
 			}
 		case apimodels.BatchOperationTypeDelete:
-			status := h.repository.DeleteDocument(databaseId, collectionId, operation.Id)
-			responseCode := repositoryStatusToResponseCode(status)
-			if status == repositorymodels.StatusOk {
+			status := h.dataStore.DeleteDocument(databaseId, collectionId, operation.Id)
+			responseCode := dataStoreStatusToResponseCode(status)
+			if status == datastore.StatusOk {
 				responseCode = http.StatusNoContent
 			}
 			batchOperationResults[idx] = apimodels.BatchOperationResult{
 				StatusCode: responseCode,
 			}
 		case apimodels.BatchOperationTypeReplace:
-			deleteStatus := h.repository.DeleteDocument(databaseId, collectionId, operation.Id)
-			if deleteStatus == repositorymodels.StatusNotFound {
+			deleteStatus := h.dataStore.DeleteDocument(databaseId, collectionId, operation.Id)
+			if deleteStatus == datastore.StatusNotFound {
 				batchOperationResults[idx] = apimodels.BatchOperationResult{
 					StatusCode: http.StatusNotFound,
 				}
 				continue
 			}
-			createdDocument, createStatus := h.repository.CreateDocument(databaseId, collectionId, operation.ResourceBody)
-			responseCode := repositoryStatusToResponseCode(createStatus)
-			if createStatus == repositorymodels.StatusOk {
+			createdDocument, createStatus := h.dataStore.CreateDocument(databaseId, collectionId, operation.ResourceBody)
+			responseCode := dataStoreStatusToResponseCode(createStatus)
+			if createStatus == datastore.StatusOk {
 				responseCode = http.StatusCreated
 			}
 			batchOperationResults[idx] = apimodels.BatchOperationResult{
@@ -320,10 +382,10 @@ func (h *Handlers) handleBatchRequest(c *gin.Context) {
 			}
 		case apimodels.BatchOperationTypeUpsert:
 			documentId := operation.ResourceBody["id"].(string)
-			h.repository.DeleteDocument(databaseId, collectionId, documentId)
-			createdDocument, createStatus := h.repository.CreateDocument(databaseId, collectionId, operation.ResourceBody)
-			responseCode := repositoryStatusToResponseCode(createStatus)
-			if createStatus == repositorymodels.StatusOk {
+			h.dataStore.DeleteDocument(databaseId, collectionId, documentId)
+			createdDocument, createStatus := h.dataStore.CreateDocument(databaseId, collectionId, operation.ResourceBody)
+			responseCode := dataStoreStatusToResponseCode(createStatus)
+			if createStatus == datastore.StatusOk {
 				responseCode = http.StatusCreated
 			}
 			batchOperationResults[idx] = apimodels.BatchOperationResult{
@@ -331,9 +393,9 @@ func (h *Handlers) handleBatchRequest(c *gin.Context) {
 				ResourceBody: createdDocument,
 			}
 		case apimodels.BatchOperationTypeRead:
-			document, status := h.repository.GetDocument(databaseId, collectionId, operation.Id)
+			document, status := h.dataStore.GetDocument(databaseId, collectionId, operation.Id)
 			batchOperationResults[idx] = apimodels.BatchOperationResult{
-				StatusCode:   repositoryStatusToResponseCode(status),
+				StatusCode:   dataStoreStatusToResponseCode(status),
 				ResourceBody: document,
 			}
 		case apimodels.BatchOperationTypePatch:
@@ -352,17 +414,47 @@ func (h *Handlers) handleBatchRequest(c *gin.Context) {
 	c.JSON(http.StatusOK, batchOperationResults)
 }
 
-func repositoryStatusToResponseCode(status repositorymodels.RepositoryStatus) int {
+func dataStoreStatusToResponseCode(status datastore.DataStoreStatus) int {
 	switch status {
-	case repositorymodels.StatusOk:
+	case datastore.StatusOk:
 		return http.StatusOK
-	case repositorymodels.StatusNotFound:
+	case datastore.StatusNotFound:
 		return http.StatusNotFound
-	case repositorymodels.Conflict:
+	case datastore.Conflict:
 		return http.StatusConflict
-	case repositorymodels.BadRequest:
+	case datastore.BadRequest:
 		return http.StatusBadRequest
 	default:
 		return http.StatusInternalServerError
 	}
 }
+
+func (h *Handlers) executeQueryDocuments(
+	databaseId string,
+	collectionId string,
+	query string,
+	queryParameters map[string]interface{},
+	pageMaxItemCount int,
+	pageCursor int,
+) (memoryexecutor.ExecuteQueryResult, datastore.DataStoreStatus) {
+	parsedQuery, err := nosql.Parse("", []byte(query))
+	if err != nil {
+		logger.Errorf("Failed to parse query: %s\nerr: %v", query, err)
+		return memoryexecutor.ExecuteQueryResult{}, datastore.BadRequest
+	}
+
+	allDocumentsIterator, status := h.dataStore.GetDocumentIterator(databaseId, collectionId)
+	if status != datastore.StatusOk {
+		return memoryexecutor.ExecuteQueryResult{}, status
+	}
+	defer allDocumentsIterator.Close()
+
+	rowsIterator := converters.NewDocumentToRowTypeIterator(allDocumentsIterator)
+
+	if typedQuery, ok := parsedQuery.(parsers.SelectStmt); ok {
+		typedQuery.Parameters = queryParameters
+		return memoryexecutor.ExecuteQuery(typedQuery, rowsIterator, pageCursor, pageMaxItemCount), datastore.StatusOk
+	}
+
+	return memoryexecutor.ExecuteQueryResult{}, datastore.BadRequest
+}

api/handlers/handlers.go

@@ -2,17 +2,17 @@ package handlers
 
 import (
 	"github.com/pikami/cosmium/api/config"
-	"github.com/pikami/cosmium/internal/repositories"
+	"github.com/pikami/cosmium/internal/datastore"
 )
 
 type Handlers struct {
-	repository *repositories.DataRepository
-	config     config.ServerConfig
+	dataStore datastore.DataStore
+	config    *config.ServerConfig
 }
 
-func NewHandlers(dataRepository *repositories.DataRepository, config config.ServerConfig) *Handlers {
+func NewHandlers(dataStore datastore.DataStore, config *config.ServerConfig) *Handlers {
 	return &Handlers{
-		repository: dataRepository,
-		config:     config,
+		dataStore: dataStore,
+		config:    config,
 	}
 }

api/handlers/middleware/authentication.go

@@ -6,11 +6,12 @@ import (
 
 	"github.com/gin-gonic/gin"
 	"github.com/pikami/cosmium/api/config"
+	"github.com/pikami/cosmium/api/headers"
 	"github.com/pikami/cosmium/internal/authentication"
 	"github.com/pikami/cosmium/internal/logger"
 )
 
-func Authentication(config config.ServerConfig) gin.HandlerFunc {
+func Authentication(config *config.ServerConfig) gin.HandlerFunc {
 	return func(c *gin.Context) {
 		requestUrl := c.Request.URL.String()
 		if config.DisableAuth ||
@@ -22,8 +23,8 @@ func Authentication(config config.ServerConfig) gin.HandlerFunc {
 		resourceType := urlToResourceType(requestUrl)
 		resourceId := requestToResourceId(c)
 
-		authHeader := c.Request.Header.Get("authorization")
-		date := c.Request.Header.Get("x-ms-date")
+		authHeader := c.Request.Header.Get(headers.Authorization)
+		date := c.Request.Header.Get(headers.XDate)
 		expectedSignature := authentication.GenerateSignature(
 			c.Request.Method, resourceType, resourceId, date, config.AccountKey)
 
@@ -60,6 +61,9 @@ func requestToResourceId(c *gin.Context) string {
 	databaseId, _ := c.Params.Get("databaseId")
 	collId, _ := c.Params.Get("collId")
 	docId, _ := c.Params.Get("docId")
+	triggerId, _ := c.Params.Get("triggerId")
+	sprocId, _ := c.Params.Get("sprocId")
+	udfId, _ := c.Params.Get("udfId")
 	resourceType := urlToResourceType(c.Request.URL.String())
 
 	var resourceId string
@@ -72,8 +76,17 @@ func requestToResourceId(c *gin.Context) string {
 	if docId != "" {
 		resourceId += "/docs/" + docId
 	}
+	if triggerId != "" {
+		resourceId += "/triggers/" + triggerId
+	}
+	if sprocId != "" {
+		resourceId += "/sprocs/" + sprocId
+	}
+	if udfId != "" {
+		resourceId += "/udfs/" + udfId
+	}
 
-	isFeed := c.Request.Header.Get("A-Im") == "Incremental Feed"
+	isFeed := c.Request.Header.Get(headers.AIM) == "Incremental Feed"
 	if resourceType == "pkranges" && isFeed {
 		resourceId = collId
 	}

api/handlers/middleware/strip_trailing_slashes.go

@@ -7,7 +7,7 @@ import (
 	"github.com/pikami/cosmium/api/config"
 )
 
-func StripTrailingSlashes(r *gin.Engine, config config.ServerConfig) gin.HandlerFunc {
+func StripTrailingSlashes(r *gin.Engine, config *config.ServerConfig) gin.HandlerFunc {
 	return func(c *gin.Context) {
 		path := c.Request.URL.Path
 		if len(path) > 1 && path[len(path)-1] == '/' && !strings.Contains(path, config.ExplorerBaseUrlLocation) {

api/handlers/offers.go

@@ -4,10 +4,11 @@ import (
 	"net/http"
 
 	"github.com/gin-gonic/gin"
+	"github.com/pikami/cosmium/api/headers"
 )
 
 func GetOffers(c *gin.Context) {
-	c.Header("x-ms-item-count", "0")
+	c.Header(headers.ItemCount, "0")
 	c.IndentedJSON(http.StatusOK, gin.H{
 		"_rid":   "",
 		"_count": 0,

api/handlers/partition_key_ranges.go

@@ -5,7 +5,9 @@ import (
 	"net/http"
 
 	"github.com/gin-gonic/gin"
-	repositorymodels "github.com/pikami/cosmium/internal/repository_models"
+	"github.com/pikami/cosmium/api/headers"
+	"github.com/pikami/cosmium/internal/constants"
+	"github.com/pikami/cosmium/internal/datastore"
 	"github.com/pikami/cosmium/internal/resourceid"
 )
 
@@ -13,21 +15,21 @@ func (h *Handlers) GetPartitionKeyRanges(c *gin.Context) {
 	databaseId := c.Param("databaseId")
 	collectionId := c.Param("collId")
 
-	if c.Request.Header.Get("if-none-match") != "" {
+	if c.Request.Header.Get(headers.IfNoneMatch) != "" {
 		c.AbortWithStatus(http.StatusNotModified)
 		return
 	}
 
-	partitionKeyRanges, status := h.repository.GetPartitionKeyRanges(databaseId, collectionId)
-	if status == repositorymodels.StatusOk {
-		c.Header("etag", "\"420\"")
-		c.Header("lsn", "420")
-		c.Header("x-ms-cosmos-llsn", "420")
-		c.Header("x-ms-global-committed-lsn", "420")
-		c.Header("x-ms-item-count", fmt.Sprintf("%d", len(partitionKeyRanges)))
+	partitionKeyRanges, status := h.dataStore.GetPartitionKeyRanges(databaseId, collectionId)
+	if status == datastore.StatusOk {
+		c.Header(headers.ETag, "\"420\"")
+		c.Header(headers.LSN, "420")
+		c.Header(headers.CosmosLsn, "420")
+		c.Header(headers.GlobalCommittedLsn, "420")
+		c.Header(headers.ItemCount, fmt.Sprintf("%d", len(partitionKeyRanges)))
 
 		collectionRid := collectionId
-		collection, _ := h.repository.GetCollection(databaseId, collectionId)
+		collection, _ := h.dataStore.GetCollection(databaseId, collectionId)
 		if collection.ResourceID != "" {
 			collectionRid = collection.ResourceID
 		}
@@ -41,10 +43,10 @@ func (h *Handlers) GetPartitionKeyRanges(c *gin.Context) {
 		return
 	}
 
-	if status == repositorymodels.StatusNotFound {
-		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
+	if status == datastore.StatusNotFound {
+		c.IndentedJSON(http.StatusNotFound, constants.NotFoundResponse)
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }

api/handlers/server_info.go

@@ -3,6 +3,7 @@ package handlers
 import (
 	"fmt"
 	"net/http"
+	"strings"
 
 	"github.com/gin-gonic/gin"
 )
@@ -27,7 +28,9 @@ func (h *Handlers) GetServerInfo(c *gin.Context) {
 				"databaseAccountEndpoint": h.config.DatabaseEndpoint,
 			},
 		},
-		"enableMultipleWriteLocations": false,
+		"enableMultipleWriteLocations":   false,
+		"continuousBackupEnabled":        false,
+		"enableNRegionSynchronousCommit": false,
 		"userReplicationPolicy": map[string]interface{}{
 			"asyncReplication":  false,
 			"minReplicaSetSize": 1,
@@ -39,3 +42,46 @@ func (h *Handlers) GetServerInfo(c *gin.Context) {
 		"queryEngineConfiguration": "{\"allowNewKeywords\":true,\"maxJoinsPerSqlQuery\":10,\"maxQueryRequestTimeoutFraction\":0.9,\"maxSqlQueryInputLength\":524288,\"maxUdfRefPerSqlQuery\":10,\"queryMaxInMemorySortDocumentCount\":-1000,\"spatialMaxGeometryPointCount\":256,\"sqlAllowNonFiniteNumbers\":false,\"sqlDisableOptimizationFlags\":0,\"enableSpatialIndexing\":true,\"maxInExpressionItemsCount\":2147483647,\"maxLogicalAndPerSqlQuery\":2147483647,\"maxLogicalOrPerSqlQuery\":2147483647,\"maxSpatialQueryCells\":2147483647,\"sqlAllowAggregateFunctions\":true,\"sqlAllowGroupByClause\":true,\"sqlAllowLike\":true,\"sqlAllowSubQuery\":true,\"sqlAllowScalarSubQuery\":true,\"sqlAllowTop\":true}",
 	})
 }
+
+type Address struct {
+	IsPrimary                     bool   `json:"isPrimary"`
+	PhyscialUri                   string `json:"physcialUri"`
+	IsAuxiliary                   bool   `json:"isAuxiliary"`
+	PartitionTargetReplicaSetSize int    `json:"partitionTargetReplicaSetSize"`
+	Protocol                      string `json:"protocol"`
+	PartitionKeyRangeId           string `json:"partitionKeyRangeId"`
+	PartitionIndex                string `json:"partitionIndex"`
+}
+
+func (h *Handlers) GetAddresses(c *gin.Context) {
+	addresses := []Address{}
+
+	if h.config.EnableRntbd {
+		addresses = append(addresses, Address{
+			IsPrimary:                     true,
+			PhyscialUri:                   h.config.RntbdEndpoint,
+			IsAuxiliary:                   false,
+			PartitionTargetReplicaSetSize: 1,
+			Protocol:                      "rntbd",
+			PartitionKeyRangeId:           "0",
+			PartitionIndex:                "0@0",
+		})
+	}
+
+	if !strings.Contains(c.Request.RequestURI, "protocol%20eq%20rntbd") {
+		addresses = append(addresses, Address{
+			IsPrimary:                     true,
+			PhyscialUri:                   h.config.DatabaseEndpoint,
+			IsAuxiliary:                   false,
+			PartitionTargetReplicaSetSize: 1,
+			Protocol:                      "https",
+			PartitionKeyRangeId:           "0",
+			PartitionIndex:                "0@0",
+		})
+	}
+
+	c.IndentedJSON(http.StatusOK, gin.H{
+		"Addresss": addresses,
+		"_count":   len(addresses),
+	})
+}

api/handlers/stored_procedures.go

@@ -5,22 +5,24 @@ import (
 	"net/http"
 
 	"github.com/gin-gonic/gin"
-	repositorymodels "github.com/pikami/cosmium/internal/repository_models"
+	"github.com/pikami/cosmium/api/headers"
+	"github.com/pikami/cosmium/internal/constants"
+	"github.com/pikami/cosmium/internal/datastore"
 )
 
 func (h *Handlers) GetAllStoredProcedures(c *gin.Context) {
 	databaseId := c.Param("databaseId")
 	collectionId := c.Param("collId")
 
-	sps, status := h.repository.GetAllStoredProcedures(databaseId, collectionId)
+	sps, status := h.dataStore.GetAllStoredProcedures(databaseId, collectionId)
 
-	if status == repositorymodels.StatusOk {
-		c.Header("x-ms-item-count", fmt.Sprintf("%d", len(sps)))
+	if status == datastore.StatusOk {
+		c.Header(headers.ItemCount, fmt.Sprintf("%d", len(sps)))
 		c.IndentedJSON(http.StatusOK, gin.H{"_rid": "", "StoredProcedures": sps, "_count": len(sps)})
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }
 
 func (h *Handlers) GetStoredProcedure(c *gin.Context) {
@@ -28,19 +30,19 @@ func (h *Handlers) GetStoredProcedure(c *gin.Context) {
 	collectionId := c.Param("collId")
 	spId := c.Param("spId")
 
-	sp, status := h.repository.GetStoredProcedure(databaseId, collectionId, spId)
+	sp, status := h.dataStore.GetStoredProcedure(databaseId, collectionId, spId)
 
-	if status == repositorymodels.StatusOk {
+	if status == datastore.StatusOk {
 		c.IndentedJSON(http.StatusOK, sp)
 		return
 	}
 
-	if status == repositorymodels.StatusNotFound {
-		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
+	if status == datastore.StatusNotFound {
+		c.IndentedJSON(http.StatusNotFound, constants.NotFoundResponse)
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }
 
 func (h *Handlers) DeleteStoredProcedure(c *gin.Context) {
@@ -48,18 +50,18 @@ func (h *Handlers) DeleteStoredProcedure(c *gin.Context) {
 	collectionId := c.Param("collId")
 	spId := c.Param("spId")
 
-	status := h.repository.DeleteStoredProcedure(databaseId, collectionId, spId)
-	if status == repositorymodels.StatusOk {
+	status := h.dataStore.DeleteStoredProcedure(databaseId, collectionId, spId)
+	if status == datastore.StatusOk {
 		c.Status(http.StatusNoContent)
 		return
 	}
 
-	if status == repositorymodels.StatusNotFound {
-		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
+	if status == datastore.StatusNotFound {
+		c.IndentedJSON(http.StatusNotFound, constants.NotFoundResponse)
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }
 
 func (h *Handlers) ReplaceStoredProcedure(c *gin.Context) {
@@ -67,52 +69,52 @@ func (h *Handlers) ReplaceStoredProcedure(c *gin.Context) {
 	collectionId := c.Param("collId")
 	spId := c.Param("spId")
 
-	var sp repositorymodels.StoredProcedure
+	var sp datastore.StoredProcedure
 	if err := c.BindJSON(&sp); err != nil {
-		c.IndentedJSON(http.StatusBadRequest, gin.H{"message": "Invalid body"})
+		c.IndentedJSON(http.StatusBadRequest, constants.BadRequestResponse)
 		return
 	}
 
-	status := h.repository.DeleteStoredProcedure(databaseId, collectionId, spId)
-	if status == repositorymodels.StatusNotFound {
-		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
+	status := h.dataStore.DeleteStoredProcedure(databaseId, collectionId, spId)
+	if status == datastore.StatusNotFound {
+		c.IndentedJSON(http.StatusNotFound, constants.NotFoundResponse)
 		return
 	}
 
-	createdSP, status := h.repository.CreateStoredProcedure(databaseId, collectionId, sp)
-	if status == repositorymodels.Conflict {
-		c.IndentedJSON(http.StatusConflict, gin.H{"message": "Conflict"})
+	createdSP, status := h.dataStore.CreateStoredProcedure(databaseId, collectionId, sp)
+	if status == datastore.Conflict {
+		c.IndentedJSON(http.StatusConflict, constants.ConflictResponse)
 		return
 	}
 
-	if status == repositorymodels.StatusOk {
+	if status == datastore.StatusOk {
 		c.IndentedJSON(http.StatusOK, createdSP)
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }
 
 func (h *Handlers) CreateStoredProcedure(c *gin.Context) {
 	databaseId := c.Param("databaseId")
 	collectionId := c.Param("collId")
 
-	var sp repositorymodels.StoredProcedure
+	var sp datastore.StoredProcedure
 	if err := c.BindJSON(&sp); err != nil {
-		c.IndentedJSON(http.StatusBadRequest, gin.H{"message": "Invalid body"})
+		c.IndentedJSON(http.StatusBadRequest, constants.BadRequestResponse)
 		return
 	}
 
-	createdSP, status := h.repository.CreateStoredProcedure(databaseId, collectionId, sp)
-	if status == repositorymodels.Conflict {
-		c.IndentedJSON(http.StatusConflict, gin.H{"message": "Conflict"})
+	createdSP, status := h.dataStore.CreateStoredProcedure(databaseId, collectionId, sp)
+	if status == datastore.Conflict {
+		c.IndentedJSON(http.StatusConflict, constants.ConflictResponse)
 		return
 	}
 
-	if status == repositorymodels.StatusOk {
+	if status == datastore.StatusOk {
 		c.IndentedJSON(http.StatusCreated, createdSP)
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }

api/handlers/triggers.go

@@ -5,22 +5,24 @@ import (
 	"net/http"
 
 	"github.com/gin-gonic/gin"
-	repositorymodels "github.com/pikami/cosmium/internal/repository_models"
+	"github.com/pikami/cosmium/api/headers"
+	"github.com/pikami/cosmium/internal/constants"
+	"github.com/pikami/cosmium/internal/datastore"
 )
 
 func (h *Handlers) GetAllTriggers(c *gin.Context) {
 	databaseId := c.Param("databaseId")
 	collectionId := c.Param("collId")
 
-	triggers, status := h.repository.GetAllTriggers(databaseId, collectionId)
+	triggers, status := h.dataStore.GetAllTriggers(databaseId, collectionId)
 
-	if status == repositorymodels.StatusOk {
-		c.Header("x-ms-item-count", fmt.Sprintf("%d", len(triggers)))
+	if status == datastore.StatusOk {
+		c.Header(headers.ItemCount, fmt.Sprintf("%d", len(triggers)))
 		c.IndentedJSON(http.StatusOK, gin.H{"_rid": "", "Triggers": triggers, "_count": len(triggers)})
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }
 
 func (h *Handlers) GetTrigger(c *gin.Context) {
@@ -28,19 +30,19 @@ func (h *Handlers) GetTrigger(c *gin.Context) {
 	collectionId := c.Param("collId")
 	triggerId := c.Param("triggerId")
 
-	trigger, status := h.repository.GetTrigger(databaseId, collectionId, triggerId)
+	trigger, status := h.dataStore.GetTrigger(databaseId, collectionId, triggerId)
 
-	if status == repositorymodels.StatusOk {
+	if status == datastore.StatusOk {
 		c.IndentedJSON(http.StatusOK, trigger)
 		return
 	}
 
-	if status == repositorymodels.StatusNotFound {
-		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
+	if status == datastore.StatusNotFound {
+		c.IndentedJSON(http.StatusNotFound, constants.NotFoundResponse)
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }
 
 func (h *Handlers) DeleteTrigger(c *gin.Context) {
@@ -48,18 +50,18 @@ func (h *Handlers) DeleteTrigger(c *gin.Context) {
 	collectionId := c.Param("collId")
 	triggerId := c.Param("triggerId")
 
-	status := h.repository.DeleteTrigger(databaseId, collectionId, triggerId)
-	if status == repositorymodels.StatusOk {
+	status := h.dataStore.DeleteTrigger(databaseId, collectionId, triggerId)
+	if status == datastore.StatusOk {
 		c.Status(http.StatusNoContent)
 		return
 	}
 
-	if status == repositorymodels.StatusNotFound {
-		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
+	if status == datastore.StatusNotFound {
+		c.IndentedJSON(http.StatusNotFound, constants.NotFoundResponse)
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }
 
 func (h *Handlers) ReplaceTrigger(c *gin.Context) {
@@ -67,52 +69,52 @@ func (h *Handlers) ReplaceTrigger(c *gin.Context) {
 	collectionId := c.Param("collId")
 	triggerId := c.Param("triggerId")
 
-	var trigger repositorymodels.Trigger
+	var trigger datastore.Trigger
 	if err := c.BindJSON(&trigger); err != nil {
-		c.IndentedJSON(http.StatusBadRequest, gin.H{"message": "Invalid body"})
+		c.IndentedJSON(http.StatusBadRequest, constants.BadRequestResponse)
 		return
 	}
 
-	status := h.repository.DeleteTrigger(databaseId, collectionId, triggerId)
-	if status == repositorymodels.StatusNotFound {
-		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
+	status := h.dataStore.DeleteTrigger(databaseId, collectionId, triggerId)
+	if status == datastore.StatusNotFound {
+		c.IndentedJSON(http.StatusNotFound, constants.NotFoundResponse)
 		return
 	}
 
-	createdTrigger, status := h.repository.CreateTrigger(databaseId, collectionId, trigger)
-	if status == repositorymodels.Conflict {
-		c.IndentedJSON(http.StatusConflict, gin.H{"message": "Conflict"})
+	createdTrigger, status := h.dataStore.CreateTrigger(databaseId, collectionId, trigger)
+	if status == datastore.Conflict {
+		c.IndentedJSON(http.StatusConflict, constants.ConflictResponse)
 		return
 	}
 
-	if status == repositorymodels.StatusOk {
+	if status == datastore.StatusOk {
 		c.IndentedJSON(http.StatusOK, createdTrigger)
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }
 
 func (h *Handlers) CreateTrigger(c *gin.Context) {
 	databaseId := c.Param("databaseId")
 	collectionId := c.Param("collId")
 
-	var trigger repositorymodels.Trigger
+	var trigger datastore.Trigger
 	if err := c.BindJSON(&trigger); err != nil {
-		c.IndentedJSON(http.StatusBadRequest, gin.H{"message": "Invalid body"})
+		c.IndentedJSON(http.StatusBadRequest, constants.BadRequestResponse)
 		return
 	}
 
-	createdTrigger, status := h.repository.CreateTrigger(databaseId, collectionId, trigger)
-	if status == repositorymodels.Conflict {
-		c.IndentedJSON(http.StatusConflict, gin.H{"message": "Conflict"})
+	createdTrigger, status := h.dataStore.CreateTrigger(databaseId, collectionId, trigger)
+	if status == datastore.Conflict {
+		c.IndentedJSON(http.StatusConflict, constants.ConflictResponse)
 		return
 	}
 
-	if status == repositorymodels.StatusOk {
+	if status == datastore.StatusOk {
 		c.IndentedJSON(http.StatusCreated, createdTrigger)
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }

api/handlers/user_defined_functions.go

@@ -5,22 +5,24 @@ import (
 	"net/http"
 
 	"github.com/gin-gonic/gin"
-	repositorymodels "github.com/pikami/cosmium/internal/repository_models"
+	"github.com/pikami/cosmium/api/headers"
+	"github.com/pikami/cosmium/internal/constants"
+	"github.com/pikami/cosmium/internal/datastore"
 )
 
 func (h *Handlers) GetAllUserDefinedFunctions(c *gin.Context) {
 	databaseId := c.Param("databaseId")
 	collectionId := c.Param("collId")
 
-	udfs, status := h.repository.GetAllUserDefinedFunctions(databaseId, collectionId)
+	udfs, status := h.dataStore.GetAllUserDefinedFunctions(databaseId, collectionId)
 
-	if status == repositorymodels.StatusOk {
-		c.Header("x-ms-item-count", fmt.Sprintf("%d", len(udfs)))
+	if status == datastore.StatusOk {
+		c.Header(headers.ItemCount, fmt.Sprintf("%d", len(udfs)))
 		c.IndentedJSON(http.StatusOK, gin.H{"_rid": "", "UserDefinedFunctions": udfs, "_count": len(udfs)})
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }
 
 func (h *Handlers) GetUserDefinedFunction(c *gin.Context) {
@@ -28,19 +30,19 @@ func (h *Handlers) GetUserDefinedFunction(c *gin.Context) {
 	collectionId := c.Param("collId")
 	udfId := c.Param("udfId")
 
-	udf, status := h.repository.GetUserDefinedFunction(databaseId, collectionId, udfId)
+	udf, status := h.dataStore.GetUserDefinedFunction(databaseId, collectionId, udfId)
 
-	if status == repositorymodels.StatusOk {
+	if status == datastore.StatusOk {
 		c.IndentedJSON(http.StatusOK, udf)
 		return
 	}
 
-	if status == repositorymodels.StatusNotFound {
-		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
+	if status == datastore.StatusNotFound {
+		c.IndentedJSON(http.StatusNotFound, constants.NotFoundResponse)
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }
 
 func (h *Handlers) DeleteUserDefinedFunction(c *gin.Context) {
@@ -48,18 +50,18 @@ func (h *Handlers) DeleteUserDefinedFunction(c *gin.Context) {
 	collectionId := c.Param("collId")
 	udfId := c.Param("udfId")
 
-	status := h.repository.DeleteUserDefinedFunction(databaseId, collectionId, udfId)
-	if status == repositorymodels.StatusOk {
+	status := h.dataStore.DeleteUserDefinedFunction(databaseId, collectionId, udfId)
+	if status == datastore.StatusOk {
 		c.Status(http.StatusNoContent)
 		return
 	}
 
-	if status == repositorymodels.StatusNotFound {
-		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
+	if status == datastore.StatusNotFound {
+		c.IndentedJSON(http.StatusNotFound, constants.NotFoundResponse)
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }
 
 func (h *Handlers) ReplaceUserDefinedFunction(c *gin.Context) {
@@ -67,52 +69,52 @@ func (h *Handlers) ReplaceUserDefinedFunction(c *gin.Context) {
 	collectionId := c.Param("collId")
 	udfId := c.Param("udfId")
 
-	var udf repositorymodels.UserDefinedFunction
+	var udf datastore.UserDefinedFunction
 	if err := c.BindJSON(&udf); err != nil {
-		c.IndentedJSON(http.StatusBadRequest, gin.H{"message": "Invalid body"})
+		c.IndentedJSON(http.StatusBadRequest, constants.BadRequestResponse)
 		return
 	}
 
-	status := h.repository.DeleteUserDefinedFunction(databaseId, collectionId, udfId)
-	if status == repositorymodels.StatusNotFound {
-		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
+	status := h.dataStore.DeleteUserDefinedFunction(databaseId, collectionId, udfId)
+	if status == datastore.StatusNotFound {
+		c.IndentedJSON(http.StatusNotFound, constants.NotFoundResponse)
 		return
 	}
 
-	createdUdf, status := h.repository.CreateUserDefinedFunction(databaseId, collectionId, udf)
-	if status == repositorymodels.Conflict {
-		c.IndentedJSON(http.StatusConflict, gin.H{"message": "Conflict"})
+	createdUdf, status := h.dataStore.CreateUserDefinedFunction(databaseId, collectionId, udf)
+	if status == datastore.Conflict {
+		c.IndentedJSON(http.StatusConflict, constants.ConflictResponse)
 		return
 	}
 
-	if status == repositorymodels.StatusOk {
+	if status == datastore.StatusOk {
 		c.IndentedJSON(http.StatusOK, createdUdf)
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }
 
 func (h *Handlers) CreateUserDefinedFunction(c *gin.Context) {
 	databaseId := c.Param("databaseId")
 	collectionId := c.Param("collId")
 
-	var udf repositorymodels.UserDefinedFunction
+	var udf datastore.UserDefinedFunction
 	if err := c.BindJSON(&udf); err != nil {
-		c.IndentedJSON(http.StatusBadRequest, gin.H{"message": "Invalid body"})
+		c.IndentedJSON(http.StatusBadRequest, constants.BadRequestResponse)
 		return
 	}
 
-	createdUdf, status := h.repository.CreateUserDefinedFunction(databaseId, collectionId, udf)
-	if status == repositorymodels.Conflict {
-		c.IndentedJSON(http.StatusConflict, gin.H{"message": "Conflict"})
+	createdUdf, status := h.dataStore.CreateUserDefinedFunction(databaseId, collectionId, udf)
+	if status == datastore.Conflict {
+		c.IndentedJSON(http.StatusConflict, constants.ConflictResponse)
 		return
 	}
 
-	if status == repositorymodels.StatusOk {
+	if status == datastore.StatusOk {
 		c.IndentedJSON(http.StatusCreated, createdUdf)
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }

api/headers/headers.go

@@ -0,0 +1,30 @@
+package headers
+
+const (
+	AIM                = "A-Im"
+	Authorization      = "authorization"
+	CosmosLsn          = "x-ms-cosmos-llsn"
+	ErrorCode          = "x-ms-error-code"
+	ETag               = "etag"
+	GlobalCommittedLsn = "x-ms-global-committed-lsn"
+	IfMatch            = "if-match"
+	IfNoneMatch        = "if-none-match"
+	IsBatchRequest     = "x-ms-cosmos-is-batch-request"
+	IsQueryPlanRequest = "x-ms-cosmos-is-query-plan-request"
+	IsUpsert           = "x-ms-documentdb-is-upsert"
+	ItemCount          = "x-ms-item-count"
+	LSN                = "lsn"
+	XDate              = "x-ms-date"
+	MaxItemCount       = "x-ms-max-item-count"
+	ContinuationToken  = "x-ms-continuation"
+
+	// Kinda retarded, but what can I do ¯\_(ツ)_/¯
+	IsQuery = "x-ms-documentdb-isquery" // Sent from python sdk and web explorer
+	Query   = "x-ms-documentdb-query"   // Sent from Go sdk
+
+	// I kinda don't use these, but I've seen them in the wild xd
+	SupportedCapabilities     = "x-ms-cosmos-sdk-supportedcapabilities"
+	ClientRetryAttemptCount   = "x-ms-client-retry-attempt-count"
+	RemainingTimeInMsOnClient = "x-ms-remaining-time-in-ms-on-client"
+	ConsistencyLevel          = "x-ms-consistency-level"
+)

api/router.go

@@ -10,15 +10,15 @@ import (
 	"github.com/gin-gonic/gin"
 	"github.com/pikami/cosmium/api/handlers"
 	"github.com/pikami/cosmium/api/handlers/middleware"
+	"github.com/pikami/cosmium/internal/datastore"
 	"github.com/pikami/cosmium/internal/logger"
-	"github.com/pikami/cosmium/internal/repositories"
 	tlsprovider "github.com/pikami/cosmium/internal/tls_provider"
 )
 
 var ginMux sync.Mutex
 
-func (s *ApiServer) CreateRouter(repository *repositories.DataRepository) {
-	routeHandlers := handlers.NewHandlers(repository, s.config)
+func (s *ApiServer) CreateRouter(dataStore datastore.DataStore) {
+	routeHandlers := handlers.NewHandlers(dataStore, s.config)
 
 	ginMux.Lock()
 	gin.DefaultWriter = logger.InfoWriter()
@@ -31,6 +31,7 @@ func (s *ApiServer) CreateRouter(repository *repositories.DataRepository) {
 
 	router := gin.Default(func(e *gin.Engine) {
 		e.RedirectTrailingSlash = false
+		e.RemoveExtraSlash = true
 	})
 
 	if s.config.LogLevel == "debug" {
@@ -79,6 +80,7 @@ func (s *ApiServer) CreateRouter(repository *repositories.DataRepository) {
 
 	router.GET("/offers", handlers.GetOffers)
 	router.GET("/", routeHandlers.GetServerInfo)
+	router.GET("//addresses", routeHandlers.GetAddresses)
 
 	router.GET("/cosmium/export", routeHandlers.CosmiumExport)
 

api/tests/authentication_test.go

@@ -2,13 +2,11 @@ package tests_test
 
 import (
 	"context"
-	"errors"
 	"fmt"
 	"io"
 	"net/http"
 	"testing"
 
-	"github.com/Azure/azure-sdk-for-go/sdk/azcore"
 	"github.com/Azure/azure-sdk-for-go/sdk/data/azcosmos"
 	"github.com/pikami/cosmium/api/config"
 	"github.com/stretchr/testify/assert"
@@ -19,9 +17,9 @@ func Test_Authentication(t *testing.T) {
 	defer ts.Server.Close()
 
 	t.Run("Should get 200 when correct account key is used", func(t *testing.T) {
-		ts.Repository.DeleteDatabase(testDatabaseName)
+		ts.DataStore.DeleteDatabase(testDatabaseName)
 		client, err := azcosmos.NewClientFromConnectionString(
-			fmt.Sprintf("AccountEndpoint=%s;AccountKey=%s", ts.URL, config.DefaultAccountKey),
+			formatConnectionString(ts.URL, config.DefaultAccountKey),
 			&azcosmos.ClientOptions{},
 		)
 		assert.Nil(t, err)
@@ -35,9 +33,9 @@ func Test_Authentication(t *testing.T) {
 	})
 
 	t.Run("Should get 401 when wrong account key is used", func(t *testing.T) {
-		ts.Repository.DeleteDatabase(testDatabaseName)
+		ts.DataStore.DeleteDatabase(testDatabaseName)
 		client, err := azcosmos.NewClientFromConnectionString(
-			fmt.Sprintf("AccountEndpoint=%s;AccountKey=%s", ts.URL, "AAAA"),
+			formatConnectionString(ts.URL, "AAAA"),
 			&azcosmos.ClientOptions{},
 		)
 		assert.Nil(t, err)
@@ -47,12 +45,7 @@ func Test_Authentication(t *testing.T) {
 			azcosmos.DatabaseProperties{ID: testDatabaseName},
 			&azcosmos.CreateDatabaseOptions{})
 
-		var respErr *azcore.ResponseError
-		if errors.As(err, &respErr) {
-			assert.Equal(t, respErr.StatusCode, http.StatusUnauthorized)
-		} else {
-			panic(err)
-		}
+		assert.Contains(t, err.Error(), "401 Unauthorized")
 	})
 
 	t.Run("Should allow unauthorized requests to /_explorer", func(t *testing.T) {
@@ -68,7 +61,7 @@ func Test_Authentication(t *testing.T) {
 }
 
 func Test_Authentication_Disabled(t *testing.T) {
-	ts := runTestServerCustomConfig(config.ServerConfig{
+	ts := runTestServerCustomConfig(&config.ServerConfig{
 		AccountKey:              config.DefaultAccountKey,
 		ExplorerPath:            "/tmp/nothing",
 		ExplorerBaseUrlLocation: config.ExplorerBaseUrlLocation,
@@ -77,9 +70,9 @@ func Test_Authentication_Disabled(t *testing.T) {
 	defer ts.Server.Close()
 
 	t.Run("Should get 200 when wrong account key is used, but authentication is dissabled", func(t *testing.T) {
-		ts.Repository.DeleteDatabase(testDatabaseName)
+		ts.DataStore.DeleteDatabase(testDatabaseName)
 		client, err := azcosmos.NewClientFromConnectionString(
-			fmt.Sprintf("AccountEndpoint=%s;AccountKey=%s", ts.URL, "AAAA"),
+			formatConnectionString(ts.URL, "AAAA"),
 			&azcosmos.ClientOptions{},
 		)
 		assert.Nil(t, err)
@@ -92,3 +85,7 @@ func Test_Authentication_Disabled(t *testing.T) {
 		assert.Equal(t, createResponse.DatabaseProperties.ID, testDatabaseName)
 	})
 }
+
+func formatConnectionString(endpoint, key string) string {
+	return fmt.Sprintf("AccountEndpoint=%s;AccountKey=%s", endpoint, key)
+}

api/tests/collections_test.go

@@ -3,32 +3,29 @@ package tests_test
 import (
 	"context"
 	"errors"
-	"fmt"
 	"net/http"
 	"testing"
 
 	"github.com/Azure/azure-sdk-for-go/sdk/azcore"
 	"github.com/Azure/azure-sdk-for-go/sdk/data/azcosmos"
-	"github.com/pikami/cosmium/api/config"
-	repositorymodels "github.com/pikami/cosmium/internal/repository_models"
+	"github.com/pikami/cosmium/internal/datastore"
 	"github.com/stretchr/testify/assert"
 )
 
 func Test_Collections(t *testing.T) {
-	ts := runTestServer()
-	defer ts.Server.Close()
+	presets := []testPreset{PresetJsonStore, PresetBadgerStore}
 
-	client, err := azcosmos.NewClientFromConnectionString(
-		fmt.Sprintf("AccountEndpoint=%s;AccountKey=%s", ts.URL, config.DefaultAccountKey),
-		&azcosmos.ClientOptions{},
-	)
-	assert.Nil(t, err)
+	setUp := func(ts *TestServer, client *azcosmos.Client) *azcosmos.DatabaseClient {
+		ts.DataStore.CreateDatabase(datastore.Database{ID: testDatabaseName})
+		databaseClient, err := client.NewDatabase(testDatabaseName)
+		assert.Nil(t, err)
 
-	ts.Repository.CreateDatabase(repositorymodels.Database{ID: testDatabaseName})
-	databaseClient, err := client.NewDatabase(testDatabaseName)
-	assert.Nil(t, err)
+		return databaseClient
+	}
+
+	runTestsWithPresets(t, "Collection Create", presets, func(t *testing.T, ts *TestServer, client *azcosmos.Client) {
+		databaseClient := setUp(ts, client)
 
-	t.Run("Collection Create", func(t *testing.T) {
 		t.Run("Should create collection", func(t *testing.T) {
 			createResponse, err := databaseClient.CreateContainer(context.TODO(), azcosmos.ContainerProperties{
 				ID: testCollectionName,
@@ -39,7 +36,7 @@ func Test_Collections(t *testing.T) {
 		})
 
 		t.Run("Should return conflict when collection exists", func(t *testing.T) {
-			ts.Repository.CreateCollection(testDatabaseName, repositorymodels.Collection{
+			ts.DataStore.CreateCollection(testDatabaseName, datastore.Collection{
 				ID: testCollectionName,
 			})
 
@@ -57,9 +54,11 @@ func Test_Collections(t *testing.T) {
 		})
 	})
 
-	t.Run("Collection Read", func(t *testing.T) {
+	runTestsWithPresets(t, "Collection Read", presets, func(t *testing.T, ts *TestServer, client *azcosmos.Client) {
+		databaseClient := setUp(ts, client)
+
 		t.Run("Should read collection", func(t *testing.T) {
-			ts.Repository.CreateCollection(testDatabaseName, repositorymodels.Collection{
+			ts.DataStore.CreateCollection(testDatabaseName, datastore.Collection{
 				ID: testCollectionName,
 			})
 
@@ -73,7 +72,7 @@ func Test_Collections(t *testing.T) {
 		})
 
 		t.Run("Should return not found when collection does not exist", func(t *testing.T) {
-			ts.Repository.DeleteCollection(testDatabaseName, testCollectionName)
+			ts.DataStore.DeleteCollection(testDatabaseName, testCollectionName)
 
 			collectionResponse, err := databaseClient.NewContainer(testCollectionName)
 			assert.Nil(t, err)
@@ -90,9 +89,11 @@ func Test_Collections(t *testing.T) {
 		})
 	})
 
-	t.Run("Collection Delete", func(t *testing.T) {
+	runTestsWithPresets(t, "Collection Delete", presets, func(t *testing.T, ts *TestServer, client *azcosmos.Client) {
+		databaseClient := setUp(ts, client)
+
 		t.Run("Should delete collection", func(t *testing.T) {
-			ts.Repository.CreateCollection(testDatabaseName, repositorymodels.Collection{
+			ts.DataStore.CreateCollection(testDatabaseName, datastore.Collection{
 				ID: testCollectionName,
 			})
 
@@ -105,7 +106,7 @@ func Test_Collections(t *testing.T) {
 		})
 
 		t.Run("Should return not found when collection does not exist", func(t *testing.T) {
-			ts.Repository.DeleteCollection(testDatabaseName, testCollectionName)
+			ts.DataStore.DeleteCollection(testDatabaseName, testCollectionName)
 
 			collectionResponse, err := databaseClient.NewContainer(testCollectionName)
 			assert.Nil(t, err)
@@ -120,5 +121,26 @@ func Test_Collections(t *testing.T) {
 				panic(err)
 			}
 		})
+
+		t.Run("Should delete collection with exactly matching name", func(t *testing.T) {
+			ts.DataStore.CreateCollection(testDatabaseName, datastore.Collection{
+				ID: testCollectionName + "extra",
+			})
+			ts.DataStore.CreateCollection(testDatabaseName, datastore.Collection{
+				ID: testCollectionName,
+			})
+
+			collectionResponse, err := databaseClient.NewContainer(testCollectionName)
+			assert.Nil(t, err)
+
+			readResponse, err := collectionResponse.Delete(context.TODO(), &azcosmos.DeleteContainerOptions{})
+			assert.Nil(t, err)
+			assert.Equal(t, readResponse.RawResponse.StatusCode, http.StatusNoContent)
+
+			collections, status := ts.DataStore.GetAllCollections(testDatabaseName)
+			assert.Equal(t, status, datastore.StatusOk)
+			assert.Len(t, collections, 1)
+			assert.Equal(t, collections[0].ID, testCollectionName+"extra")
+		})
 	})
 }

api/tests/config_test.go

@@ -1,40 +1,59 @@
 package tests_test
 
 import (
+	"fmt"
 	"net/http/httptest"
+	"testing"
 
+	"github.com/Azure/azure-sdk-for-go/sdk/data/azcosmos"
 	"github.com/pikami/cosmium/api"
 	"github.com/pikami/cosmium/api/config"
+	"github.com/pikami/cosmium/internal/datastore"
+	badgerdatastore "github.com/pikami/cosmium/internal/datastore/badger_datastore"
+	jsondatastore "github.com/pikami/cosmium/internal/datastore/json_datastore"
 	"github.com/pikami/cosmium/internal/logger"
-	"github.com/pikami/cosmium/internal/repositories"
+	"github.com/stretchr/testify/assert"
 )
 
 type TestServer struct {
-	Server     *httptest.Server
-	Repository *repositories.DataRepository
-	URL        string
+	Server    *httptest.Server
+	DataStore datastore.DataStore
+	URL       string
 }
 
-func runTestServerCustomConfig(config config.ServerConfig) *TestServer {
-	repository := repositories.NewDataRepository(repositories.RepositoryOptions{})
+func getDefaultTestServerConfig() *config.ServerConfig {
+	return &config.ServerConfig{
+		AccountKey:              config.DefaultAccountKey,
+		ExplorerPath:            "/tmp/nothing",
+		ExplorerBaseUrlLocation: config.ExplorerBaseUrlLocation,
+		DataStore:               "json",
+	}
+}
 
-	api := api.NewApiServer(repository, config)
+func runTestServerCustomConfig(configuration *config.ServerConfig) *TestServer {
+	var dataStore datastore.DataStore
+	switch configuration.DataStore {
+	case config.DataStoreBadger:
+		dataStore = badgerdatastore.NewBadgerDataStore(badgerdatastore.BadgerDataStoreOptions{})
+	default:
+		dataStore = jsondatastore.NewJsonDataStore(jsondatastore.JsonDataStoreOptions{})
+	}
+
+	api := api.NewApiServer(dataStore, configuration)
 
 	server := httptest.NewServer(api.GetRouter())
 
+	configuration.DatabaseEndpoint = server.URL
+
 	return &TestServer{
-		Server:     server,
-		Repository: repository,
-		URL:        server.URL,
+		Server:    server,
+		DataStore: dataStore,
+		URL:       server.URL,
 	}
 }
 
 func runTestServer() *TestServer {
-	config := config.ServerConfig{
-		AccountKey:              config.DefaultAccountKey,
-		ExplorerPath:            "/tmp/nothing",
-		ExplorerBaseUrlLocation: config.ExplorerBaseUrlLocation,
-	}
+	config := getDefaultTestServerConfig()
 
 	config.LogLevel = "debug"
 	logger.SetLogLevel(logger.LogLevelDebug)
@@ -47,3 +66,47 @@ const (
 	testDatabaseName   = "test-db"
 	testCollectionName = "test-coll"
 )
+
+type testFunc func(t *testing.T, ts *TestServer, cosmosClient *azcosmos.Client)
+type testPreset string
+
+const (
+	PresetJsonStore   testPreset = "JsonDS"
+	PresetBadgerStore testPreset = "BadgerDS"
+)
+
+func runTestsWithPreset(t *testing.T, name string, testPreset testPreset, f testFunc) {
+	serverConfig := getDefaultTestServerConfig()
+
+	serverConfig.LogLevel = "debug"
+	logger.SetLogLevel(logger.LogLevelDebug)
+
+	switch testPreset {
+	case PresetBadgerStore:
+		serverConfig.DataStore = config.DataStoreBadger
+	case PresetJsonStore:
+		serverConfig.DataStore = config.DataStoreJson
+	}
+
+	ts := runTestServerCustomConfig(serverConfig)
+	defer ts.Server.Close()
+	defer ts.DataStore.Close()
+
+	client, err := azcosmos.NewClientFromConnectionString(
+		fmt.Sprintf("AccountEndpoint=%s;AccountKey=%s", ts.URL, config.DefaultAccountKey),
+		&azcosmos.ClientOptions{},
+	)
+	assert.Nil(t, err)
+
+	testName := fmt.Sprintf("%s_%s", testPreset, name)
+
+	t.Run(testName, func(t *testing.T) {
+		f(t, ts, client)
+	})
+}
+
+func runTestsWithPresets(t *testing.T, name string, testPresets []testPreset, f testFunc) {
+	for _, testPreset := range testPresets {
+		runTestsWithPreset(t, name, testPreset, f)
+	}
+}

api/tests/databases_test.go

@@ -3,30 +3,21 @@ package tests_test
 import (
 	"context"
 	"errors"
-	"fmt"
 	"net/http"
 	"testing"
 
 	"github.com/Azure/azure-sdk-for-go/sdk/azcore"
 	"github.com/Azure/azure-sdk-for-go/sdk/data/azcosmos"
-	"github.com/pikami/cosmium/api/config"
-	repositorymodels "github.com/pikami/cosmium/internal/repository_models"
+	"github.com/pikami/cosmium/internal/datastore"
 	"github.com/stretchr/testify/assert"
 )
 
 func Test_Databases(t *testing.T) {
-	ts := runTestServer()
-	defer ts.Server.Close()
+	presets := []testPreset{PresetJsonStore, PresetBadgerStore}
 
-	client, err := azcosmos.NewClientFromConnectionString(
-		fmt.Sprintf("AccountEndpoint=%s;AccountKey=%s", ts.URL, config.DefaultAccountKey),
-		&azcosmos.ClientOptions{},
-	)
-	assert.Nil(t, err)
-
-	t.Run("Database Create", func(t *testing.T) {
+	runTestsWithPresets(t, "Database Create", presets, func(t *testing.T, ts *TestServer, client *azcosmos.Client) {
 		t.Run("Should create database", func(t *testing.T) {
-			ts.Repository.DeleteDatabase(testDatabaseName)
+			ts.DataStore.DeleteDatabase(testDatabaseName)
 
 			createResponse, err := client.CreateDatabase(context.TODO(), azcosmos.DatabaseProperties{
 				ID: testDatabaseName,
@@ -37,7 +28,7 @@ func Test_Databases(t *testing.T) {
 		})
 
 		t.Run("Should return conflict when database exists", func(t *testing.T) {
-			ts.Repository.CreateDatabase(repositorymodels.Database{
+			ts.DataStore.CreateDatabase(datastore.Database{
 				ID: testDatabaseName,
 			})
 
@@ -55,9 +46,9 @@ func Test_Databases(t *testing.T) {
 		})
 	})
 
-	t.Run("Database Read", func(t *testing.T) {
+	runTestsWithPresets(t, "Database Read", presets, func(t *testing.T, ts *TestServer, client *azcosmos.Client) {
 		t.Run("Should read database", func(t *testing.T) {
-			ts.Repository.CreateDatabase(repositorymodels.Database{
+			ts.DataStore.CreateDatabase(datastore.Database{
 				ID: testDatabaseName,
 			})
 
@@ -71,7 +62,7 @@ func Test_Databases(t *testing.T) {
 		})
 
 		t.Run("Should return not found when database does not exist", func(t *testing.T) {
-			ts.Repository.DeleteDatabase(testDatabaseName)
+			ts.DataStore.DeleteDatabase(testDatabaseName)
 
 			databaseResponse, err := client.NewDatabase(testDatabaseName)
 			assert.Nil(t, err)
@@ -88,9 +79,9 @@ func Test_Databases(t *testing.T) {
 		})
 	})
 
-	t.Run("Database Delete", func(t *testing.T) {
+	runTestsWithPresets(t, "Database Delete", presets, func(t *testing.T, ts *TestServer, client *azcosmos.Client) {
 		t.Run("Should delete database", func(t *testing.T) {
-			ts.Repository.CreateDatabase(repositorymodels.Database{
+			ts.DataStore.CreateDatabase(datastore.Database{
 				ID: testDatabaseName,
 			})
 
@@ -103,7 +94,7 @@ func Test_Databases(t *testing.T) {
 		})
 
 		t.Run("Should return not found when database does not exist", func(t *testing.T) {
-			ts.Repository.DeleteDatabase(testDatabaseName)
+			ts.DataStore.DeleteDatabase(testDatabaseName)
 
 			databaseResponse, err := client.NewDatabase(testDatabaseName)
 			assert.Nil(t, err)
@@ -118,5 +109,26 @@ func Test_Databases(t *testing.T) {
 				panic(err)
 			}
 		})
+
+		t.Run("Should delete database with exactly matching name", func(t *testing.T) {
+			ts.DataStore.CreateDatabase(datastore.Database{
+				ID: testDatabaseName + "extra",
+			})
+			ts.DataStore.CreateDatabase(datastore.Database{
+				ID: testDatabaseName,
+			})
+
+			databaseResponse, err := client.NewDatabase(testDatabaseName)
+			assert.Nil(t, err)
+
+			readResponse, err := databaseResponse.Delete(context.TODO(), &azcosmos.DeleteDatabaseOptions{})
+			assert.Nil(t, err)
+			assert.Equal(t, readResponse.RawResponse.StatusCode, http.StatusNoContent)
+
+			dbs, status := ts.DataStore.GetAllDatabases()
+			assert.Equal(t, status, datastore.StatusOk)
+			assert.Len(t, dbs, 1)
+			assert.Equal(t, dbs[0].ID, testDatabaseName+"extra")
+		})
 	})
 }

api/tests/documents_array_functions_test.go

@@ -0,0 +1,47 @@
+package tests_test
+
+import (
+	"testing"
+
+	"github.com/Azure/azure-sdk-for-go/sdk/data/azcosmos"
+)
+
+func Test_Documents_ArrayContains(t *testing.T) {
+	presets := []testPreset{PresetJsonStore, PresetBadgerStore}
+
+	runTestsWithPresets(t, "Test_Documents_ArrayContains", presets, func(t *testing.T, ts *TestServer, client *azcosmos.Client) {
+		collectionClient := documents_InitializeDb(t, ts)
+
+		t.Run("Should execute ARRAY_CONTAINS() without partial match argument", func(t *testing.T) {
+			testCosmosQuery(t, collectionClient,
+				`SELECT VALUE ARRAY_CONTAINS(["apple", "banana", "cherry"], "banana") FROM c ORDER BY c.id`,
+				nil,
+				[]interface{}{true, true},
+			)
+		})
+
+		t.Run("Should execute ARRAY_CONTAINS() returning false for missing item", func(t *testing.T) {
+			testCosmosQuery(t, collectionClient,
+				`SELECT VALUE ARRAY_CONTAINS(["apple", "banana", "cherry"], "grape") FROM c ORDER BY c.id`,
+				nil,
+				[]interface{}{false, false},
+			)
+		})
+
+		t.Run("Should execute ARRAY_CONTAINS() with object full match", func(t *testing.T) {
+			testCosmosQuery(t, collectionClient,
+				`SELECT VALUE ARRAY_CONTAINS([{"name": "apple", "color": "red"}], {"name": "apple"}) FROM c ORDER BY c.id`,
+				nil,
+				[]interface{}{false, false},
+			)
+		})
+
+		t.Run("Should execute ARRAY_CONTAINS() with object partial match", func(t *testing.T) {
+			testCosmosQuery(t, collectionClient,
+				`SELECT VALUE ARRAY_CONTAINS([{"name": "apple", "color": "red"}], {"name": "apple"}, true) FROM c ORDER BY c.id`,
+				nil,
+				[]interface{}{true, true},
+			)
+		})
+	})
+}

api/tests/documents_string_functions_test.go

@@ -0,0 +1,73 @@
+package tests_test
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/Azure/azure-sdk-for-go/sdk/data/azcosmos"
+	"github.com/pikami/cosmium/api/config"
+	"github.com/pikami/cosmium/internal/datastore"
+	"github.com/stretchr/testify/assert"
+)
+
+func documents_InitializeSingleDocumentDb(t *testing.T, ts *TestServer) *azcosmos.ContainerClient {
+	ts.DataStore.CreateDatabase(datastore.Database{ID: testDatabaseName})
+	ts.DataStore.CreateCollection(testDatabaseName, datastore.Collection{
+		ID: testCollectionName,
+		PartitionKey: struct {
+			Paths   []string "json:\"paths\""
+			Kind    string   "json:\"kind\""
+			Version int      "json:\"Version\""
+		}{
+			Paths: []string{"/pk"},
+		},
+	})
+	ts.DataStore.CreateDocument(testDatabaseName, testCollectionName, map[string]interface{}{"id": "regexmatch-test", "pk": "regexmatch-test"})
+
+	client, err := azcosmos.NewClientFromConnectionString(
+		fmt.Sprintf("AccountEndpoint=%s;AccountKey=%s", ts.URL, config.DefaultAccountKey),
+		&azcosmos.ClientOptions{},
+	)
+	assert.Nil(t, err)
+
+	collectionClient, err := client.NewContainer(testDatabaseName, testCollectionName)
+	assert.Nil(t, err)
+
+	return collectionClient
+}
+
+func Test_Documents_RegexMatch(t *testing.T) {
+	presets := []testPreset{PresetJsonStore, PresetBadgerStore}
+
+	runTestsWithPresets(t, "Test_Documents_RegexMatch", presets, func(t *testing.T, ts *TestServer, client *azcosmos.Client) {
+		collectionClient := documents_InitializeSingleDocumentDb(t, ts)
+
+		t.Run("Should execute REGEXMATCH()", func(t *testing.T) {
+			testCosmosQuery(t, collectionClient,
+				`SELECT VALUE {
+					noModifiers: REGEXMATCH("abcd", "ABC"),
+					caseInsensitive: REGEXMATCH("abcd", "ABC", "i"),
+					wildcardCharacter: REGEXMATCH("abcd", "ab.", ""),
+					ignoreWhiteSpace: REGEXMATCH("abcd", "ab c", "x"),
+					caseInsensitiveAndIgnoreWhiteSpace: REGEXMATCH("abcd", "aB c", "ix"),
+					containNumberBetweenZeroAndNine: REGEXMATCH("03a", "[0-9]"),
+					containPrefix: REGEXMATCH("salt3824908", "salt{1}"),
+					containsFiveLetterWordStartingWithS: REGEXMATCH("shame", "s....", "i")
+				}`,
+				nil,
+				[]interface{}{
+					map[string]interface{}{
+						"noModifiers":                         false,
+						"caseInsensitive":                     true,
+						"wildcardCharacter":                   true,
+						"ignoreWhiteSpace":                    true,
+						"caseInsensitiveAndIgnoreWhiteSpace":  true,
+						"containNumberBetweenZeroAndNine":     true,
+						"containPrefix":                       true,
+						"containsFiveLetterWordStartingWithS": true,
+					},
+				},
+			)
+		})
+	})
+}

api/tests/documents_trailingslash_test.go

@@ -8,13 +8,15 @@ import (
 	"time"
 
 	"github.com/pikami/cosmium/api/config"
+	"github.com/pikami/cosmium/api/headers"
 	"github.com/pikami/cosmium/internal/authentication"
 	"github.com/stretchr/testify/assert"
 )
 
 // Request document with trailing slash like python cosmosdb client does.
 func Test_Documents_Read_Trailing_Slash(t *testing.T) {
-	ts, _ := documents_InitializeDb(t)
+	ts := runTestServer()
+	documents_InitializeDb(t, ts)
 	defer ts.Server.Close()
 
 	t.Run("Read doc with client that appends slash to path", func(t *testing.T) {
@@ -25,8 +27,8 @@ func Test_Documents_Read_Trailing_Slash(t *testing.T) {
 		signature := authentication.GenerateSignature("GET", "docs", path, date, config.DefaultAccountKey)
 		httpClient := &http.Client{}
 		req, _ := http.NewRequest("GET", testUrl, nil)
-		req.Header.Add("x-ms-date", date)
-		req.Header.Add("authorization", "sig="+url.QueryEscape(signature))
+		req.Header.Add(headers.XDate, date)
+		req.Header.Add(headers.Authorization, "sig="+url.QueryEscape(signature))
 		res, err := httpClient.Do(req)
 
 		assert.Nil(t, err)

cmd/rntbd_parser/rntbd_parser.go

@@ -0,0 +1,63 @@
+package main
+
+import (
+	"encoding/hex"
+	"encoding/json"
+	"flag"
+	"fmt"
+
+	"github.com/pikami/cosmium/internal/rntbd"
+)
+
+func main() {
+	input := flag.String("input", "", "Input hex string")
+	isResponse := flag.Bool("response", false, "Is response")
+	flag.Parse()
+
+	data, err := hex.DecodeString(*input)
+	if err != nil {
+		fmt.Printf("Error decoding hex string: %v\n", err)
+		return
+	}
+
+	frame, err := rntbd.ParseFrame(data, *isResponse)
+	if err != nil {
+		fmt.Printf("Error parsing frame: %v\n", err)
+		return
+	}
+
+	fmt.Printf("Activity ID: %s\n", hex.EncodeToString(frame.ActivityId))
+	fmt.Printf("Resource Type: %s\n", frame.ResourceType.String())
+	fmt.Printf("Operation Type: %s\n", frame.OperationType.String())
+
+	if len(frame.RequestHeaders) > 0 {
+		fmt.Printf("=== Request Headers ===\n")
+		for header, value := range frame.RequestHeaders {
+			fmt.Printf("%s: %v\n", header.String(), value)
+		}
+	}
+
+	if len(frame.ResponseHeaders) > 0 {
+		fmt.Printf("=== Response Headers ===\n")
+		for header, value := range frame.ResponseHeaders {
+			fmt.Printf("%s: %v\n", header.String(), value)
+		}
+	}
+
+	if len(frame.ContextHeaders) > 0 {
+		fmt.Printf("=== Context Headers ===\n")
+		for header, value := range frame.ContextHeaders {
+			fmt.Printf("%s: %v\n", header.String(), value)
+		}
+	}
+
+	if len(frame.Payload) > 0 {
+		var jsonObj any
+		err := json.Unmarshal(frame.Payload, &jsonObj)
+		if err != nil {
+			fmt.Printf("Payload: %s\n", hex.EncodeToString(frame.Payload))
+		} else {
+			fmt.Printf("Payload: %+v\n", jsonObj)
+		}
+	}
+}

cmd/server/server.go

@@ -7,27 +7,51 @@ import (
 
 	"github.com/pikami/cosmium/api"
 	"github.com/pikami/cosmium/api/config"
-	"github.com/pikami/cosmium/internal/repositories"
+	"github.com/pikami/cosmium/internal/datastore"
+	badgerdatastore "github.com/pikami/cosmium/internal/datastore/badger_datastore"
+	jsondatastore "github.com/pikami/cosmium/internal/datastore/json_datastore"
+	"github.com/pikami/cosmium/internal/logger"
+	"github.com/pikami/cosmium/internal/rntbd"
 )
 
 func main() {
 	configuration := config.ParseFlags()
 
-	repository := repositories.NewDataRepository(repositories.RepositoryOptions{
-		InitialDataFilePath: configuration.InitialDataFilePath,
-		PersistDataFilePath: configuration.PersistDataFilePath,
-	})
+	var dataStore datastore.DataStore
+	switch configuration.DataStore {
+	case config.DataStoreBadger:
+		dataStore = badgerdatastore.NewBadgerDataStore(badgerdatastore.BadgerDataStoreOptions{
+			InitialDataFilePath: configuration.InitialDataFilePath,
+			PersistDataFilePath: configuration.PersistDataFilePath,
+		})
+		logger.InfoLn("Using Badger data store")
+	default:
+		dataStore = jsondatastore.NewJsonDataStore(jsondatastore.JsonDataStoreOptions{
+			InitialDataFilePath: configuration.InitialDataFilePath,
+			PersistDataFilePath: configuration.PersistDataFilePath,
+		})
+		logger.InfoLn("Using in-memory data store")
+	}
 
-	server := api.NewApiServer(repository, configuration)
+	server := api.NewApiServer(dataStore, &configuration)
 	err := server.Start()
 	if err != nil {
 		panic(err)
 	}
 
-	waitForExit(server, repository, configuration)
+	if configuration.EnableRntbd {
+		rntbdServer := rntbd.NewRntbdServer(configuration.RntbdPort, server)
+		err = rntbdServer.Start()
+		if err != nil {
+			panic(err)
+		}
+		defer rntbdServer.Stop()
+	}
+
+	waitForExit(server, dataStore)
 }
 
-func waitForExit(server *api.ApiServer, repository *repositories.DataRepository, config config.ServerConfig) {
+func waitForExit(server *api.ApiServer, dataStore datastore.DataStore) {
 	sigs := make(chan os.Signal, 1)
 	signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
 
@@ -36,8 +60,5 @@ func waitForExit(server *api.ApiServer, repository *repositories.DataRepository,
 
 	// Stop the server
 	server.Stop()
-
-	if config.PersistDataFilePath != "" {
-		repository.SaveStateFS(config.PersistDataFilePath)
-	}
+	dataStore.Close()
 }

docs/COMPATIBILITY.md

@@ -79,7 +79,7 @@ Cosmium strives to support the core features of Cosmos DB, including:
 
 | Function | Implemented |
 | -------- | ----------- |
-| IIF      | No          |
+| IIF      | Yes         |
 
 ### Date and time Functions
 

go.mod

@@ -1,46 +1,64 @@
 module github.com/pikami/cosmium
 
-go 1.24.0
+go 1.26.3
 
 require (
-	github.com/Azure/azure-sdk-for-go/sdk/azcore v1.12.0
-	github.com/Azure/azure-sdk-for-go/sdk/data/azcosmos v0.3.6
-	github.com/cosmiumdev/json-patch/v5 v5.9.3
-	github.com/gin-gonic/gin v1.10.0
+	github.com/Azure/azure-sdk-for-go/sdk/azcore v1.22.0
+	github.com/Azure/azure-sdk-for-go/sdk/data/azcosmos v1.4.2
+	github.com/cosmiumdev/json-patch/v5 v5.9.11
+	github.com/dgraph-io/badger/v4 v4.9.2
+	github.com/gin-gonic/gin v1.12.0
 	github.com/google/uuid v1.6.0
-	github.com/stretchr/testify v1.10.0
-	golang.org/x/exp v0.0.0-20250218142911-aa4b98e5adaa
+	github.com/stretchr/testify v1.11.1
+	github.com/vmihailenco/msgpack/v5 v5.4.1
+	golang.org/x/exp v0.0.0-20260603202125-055de637280b
 )
 
 require (
 	github.com/Azure/azure-sdk-for-go v68.0.0+incompatible // indirect
-	github.com/Azure/azure-sdk-for-go/sdk/internal v1.10.0 // indirect
-	github.com/bytedance/sonic v1.12.8 // indirect
-	github.com/bytedance/sonic/loader v0.2.3 // indirect
-	github.com/cloudwego/base64x v0.1.5 // indirect
+	github.com/Azure/azure-sdk-for-go/sdk/internal v1.12.0 // indirect
+	github.com/bytedance/gopkg v0.1.4 // indirect
+	github.com/bytedance/sonic v1.15.2 // indirect
+	github.com/bytedance/sonic/loader v0.5.1 // indirect
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
+	github.com/cloudwego/base64x v0.1.7 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/gabriel-vasile/mimetype v1.4.8 // indirect
-	github.com/gin-contrib/sse v1.0.0 // indirect
+	github.com/dgraph-io/ristretto/v2 v2.4.0 // indirect
+	github.com/dustin/go-humanize v1.0.1 // indirect
+	github.com/gabriel-vasile/mimetype v1.4.13 // indirect
+	github.com/gin-contrib/sse v1.1.1 // indirect
+	github.com/go-logr/logr v1.4.3 // indirect
+	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/go-playground/locales v0.14.1 // indirect
 	github.com/go-playground/universal-translator v0.18.1 // indirect
-	github.com/go-playground/validator/v10 v10.25.0 // indirect
-	github.com/goccy/go-json v0.10.5 // indirect
+	github.com/go-playground/validator/v10 v10.30.3 // indirect
+	github.com/goccy/go-json v0.10.6 // indirect
+	github.com/goccy/go-yaml v1.19.2 // indirect
+	github.com/google/flatbuffers v25.12.19+incompatible // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
-	github.com/klauspost/cpuid/v2 v2.2.9 // indirect
+	github.com/klauspost/compress v1.18.6 // indirect
+	github.com/klauspost/cpuid/v2 v2.3.0 // indirect
 	github.com/leodido/go-urn v1.4.0 // indirect
-	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/mattn/go-isatty v0.0.22 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
-	github.com/pelletier/go-toml/v2 v2.2.3 // indirect
-	github.com/pkg/errors v0.9.1 // indirect
+	github.com/pelletier/go-toml/v2 v2.3.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/quic-go/qpack v0.6.0 // indirect
+	github.com/quic-go/quic-go v0.60.0 // indirect
 	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
-	github.com/ugorji/go/codec v1.2.12 // indirect
-	golang.org/x/arch v0.14.0 // indirect
-	golang.org/x/crypto v0.33.0 // indirect
-	golang.org/x/net v0.35.0 // indirect
-	golang.org/x/sys v0.30.0 // indirect
-	golang.org/x/text v0.22.0 // indirect
-	google.golang.org/protobuf v1.36.5 // indirect
+	github.com/ugorji/go/codec v1.3.1 // indirect
+	github.com/vmihailenco/tagparser/v2 v2.0.0 // indirect
+	go.mongodb.org/mongo-driver/v2 v2.6.0 // indirect
+	go.opentelemetry.io/auto/sdk v1.2.1 // indirect
+	go.opentelemetry.io/otel v1.44.0 // indirect
+	go.opentelemetry.io/otel/metric v1.44.0 // indirect
+	go.opentelemetry.io/otel/trace v1.44.0 // indirect
+	golang.org/x/arch v0.28.0 // indirect
+	golang.org/x/crypto v0.53.0 // indirect
+	golang.org/x/net v0.56.0 // indirect
+	golang.org/x/sys v0.46.0 // indirect
+	golang.org/x/text v0.38.0 // indirect
+	google.golang.org/protobuf v1.36.11 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -1,58 +1,76 @@
 github.com/Azure/azure-sdk-for-go v68.0.0+incompatible h1:fcYLmCpyNYRnvJbPerq7U0hS+6+I79yEDJBqVNcqUzU=
 github.com/Azure/azure-sdk-for-go v68.0.0+incompatible/go.mod h1:9XXNKU+eRnpl9moKnB4QOLf1HestfXbmab5FXxiDBjc=
-github.com/Azure/azure-sdk-for-go/sdk/azcore v1.12.0 h1:1nGuui+4POelzDwI7RG56yfQJHCnKvwfMoU7VsEp+Zg=
-github.com/Azure/azure-sdk-for-go/sdk/azcore v1.12.0/go.mod h1:99EvauvlcJ1U06amZiksfYz/3aFGyIhWGHVyiZXtBAI=
-github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.7.0 h1:tfLQ34V6F7tVSwoTf/4lH5sE0o6eCJuNDTmH09nDpbc=
-github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.7.0/go.mod h1:9kIvujWAA58nmPmWB1m23fyWic1kYZMxD9CxaWn4Qpg=
-github.com/Azure/azure-sdk-for-go/sdk/data/azcosmos v0.3.6 h1:oBqQLSI1pZwGOdXJAoJJSzmff9tlfD4KroVfjQQmd0g=
-github.com/Azure/azure-sdk-for-go/sdk/data/azcosmos v0.3.6/go.mod h1:Beh5cHIXJ0oWEDWk9lNFtuklCojLLQ5hl+LqSNTTs0I=
-github.com/Azure/azure-sdk-for-go/sdk/internal v1.10.0 h1:ywEEhmNahHBihViHepv3xPBn1663uRv2t2q/ESv9seY=
-github.com/Azure/azure-sdk-for-go/sdk/internal v1.10.0/go.mod h1:iZDifYGJTIgIIkYRNWPENUnqx6bJ2xnSDFI2tjwZNuY=
-github.com/AzureAD/microsoft-authentication-library-for-go v1.2.2 h1:XHOnouVk1mxXfQidrMEnLlPk9UMeRtyBTnEFtxkV0kU=
-github.com/AzureAD/microsoft-authentication-library-for-go v1.2.2/go.mod h1:wP83P5OoQ5p6ip3ScPr0BAq0BvuPAvacpEuSzyouqAI=
-github.com/bytedance/sonic v1.12.8 h1:4xYRVRlXIgvSZ4e8iVTlMF5szgpXd4AfvuWgA8I8lgs=
-github.com/bytedance/sonic v1.12.8/go.mod h1:uVvFidNmlt9+wa31S1urfwwthTWteBgG0hWuoKAXTx8=
-github.com/bytedance/sonic/loader v0.1.1/go.mod h1:ncP89zfokxS5LZrJxl5z0UJcsk4M4yY2JpfqGeCtNLU=
-github.com/bytedance/sonic/loader v0.2.3 h1:yctD0Q3v2NOGfSWPLPvG2ggA2kV6TS6s4wioyEqssH0=
-github.com/bytedance/sonic/loader v0.2.3/go.mod h1:N8A3vUdtUebEY2/VQC0MyhYeKUFosQU6FxH2JmUe6VI=
-github.com/cloudwego/base64x v0.1.5 h1:XPciSp1xaq2VCSt6lF0phncD4koWyULpl5bUxbfCyP4=
-github.com/cloudwego/base64x v0.1.5/go.mod h1:0zlkT4Wn5C6NdauXdJRhSKRlJvmclQ1hhJgA0rcu/8w=
-github.com/cloudwego/iasm v0.2.0/go.mod h1:8rXZaNYT2n95jn+zTI1sDr+IgcD2GVs0nlbbQPiEFhY=
-github.com/cosmiumdev/json-patch/v5 v5.9.3 h1:l+Og3+5edqV2NHDo58sz72eS733lbXVYP61seYK43Do=
-github.com/cosmiumdev/json-patch/v5 v5.9.3/go.mod h1:WzSTCdia0WrlZtjnL19P4RiwWtfdyArm/E7stgEeP5g=
+github.com/Azure/azure-sdk-for-go/sdk/azcore v1.22.0 h1:aokoqcHvaGjiM3VpjKDfMMnF/8epJ+Q1HLJ7CudztqE=
+github.com/Azure/azure-sdk-for-go/sdk/azcore v1.22.0/go.mod h1:/WYEx9pcM9Y+Dd/APJaNlSvVSvzl54rrMdZT5+Oi2LM=
+github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.13.1 h1:Hk5QBxZQC1jb2Fwj6mpzme37xbCDdNTxU7O9eb5+LB4=
+github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.13.1/go.mod h1:IYus9qsFobWIc2YVwe/WPjcnyCkPKtnHAqUYeebc8z0=
+github.com/Azure/azure-sdk-for-go/sdk/data/azcosmos v1.4.2 h1:zqxnp53f5Jn5PFU5Av4mvyWEbZ7whg72AoOCEzlXFKc=
+github.com/Azure/azure-sdk-for-go/sdk/data/azcosmos v1.4.2/go.mod h1:Krtog/7tz27z75TwM5cIS8bxEH4dcBUezcq+kGVeZEo=
+github.com/Azure/azure-sdk-for-go/sdk/internal v1.12.0 h1:fhqpLE3UEXi9lPaBRpQ6XuRW0nU7hgg4zlmZZa+a9q4=
+github.com/Azure/azure-sdk-for-go/sdk/internal v1.12.0/go.mod h1:7dCRMLwisfRH3dBupKeNCioWYUZ4SS09Z14H+7i8ZoY=
+github.com/AzureAD/microsoft-authentication-library-for-go v1.6.0 h1:XRzhVemXdgvJqCH0sFfrBUTnUJSBrBf7++ypk+twtRs=
+github.com/AzureAD/microsoft-authentication-library-for-go v1.6.0/go.mod h1:HKpQxkWaGLJ+D/5H8QRpyQXA1eKjxkFlOMwck5+33Jk=
+github.com/bytedance/gopkg v0.1.4 h1:oZnQwnX82KAIWb7033bEwtxvTqXcYMxDBaQxo5JJHWM=
+github.com/bytedance/gopkg v0.1.4/go.mod h1:v1zWfPm21Fb+OsyXN2VAHdL6TBb2L88anLQgdyje6R4=
+github.com/bytedance/sonic v1.15.2 h1:90H+rcF/FwLXwfB1cudOLq/je83n683Utf4Cbp0xHCo=
+github.com/bytedance/sonic v1.15.2/go.mod h1:mT2NbXunuaEbnZ+mRIX/vYqKISmgEuHFDI4UzmKx2SA=
+github.com/bytedance/sonic/loader v0.5.1 h1:Ygpfa9zwRCCKSlrp5bBP/b/Xzc3VxsAW+5NIYXrOOpI=
+github.com/bytedance/sonic/loader v0.5.1/go.mod h1:AR4NYCk5DdzZizZ5djGqQ92eEhCCcdf5x77udYiSJRo=
+github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
+github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/cloudwego/base64x v0.1.7 h1:NppS+Fgzg5ovhn4NkUXaDT3x9jldgH5ToMCqzBSi2zI=
+github.com/cloudwego/base64x v0.1.7/go.mod h1:Cu1PV9zfrSf7ET2tIbWbbEy7jO7HHJ13q4X2SQ8aWYg=
+github.com/cosmiumdev/json-patch/v5 v5.9.11 h1:WD2Wqaz/vO987z2FFdqgkj15HgYZ/Y5TpqE3I4T/iOQ=
+github.com/cosmiumdev/json-patch/v5 v5.9.11/go.mod h1:YPZmckmv4ZY+oxKIOjgq3sIudHVB6VEMcicCS9LtVLM=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/gabriel-vasile/mimetype v1.4.8 h1:FfZ3gj38NjllZIeJAmMhr+qKL8Wu+nOoI3GqacKw1NM=
-github.com/gabriel-vasile/mimetype v1.4.8/go.mod h1:ByKUIKGjh1ODkGM1asKUbQZOLGrPjydw3hYPU2YU9t8=
-github.com/gin-contrib/sse v1.0.0 h1:y3bT1mUWUxDpW4JLQg/HnTqV4rozuW4tC9eFKTxYI9E=
-github.com/gin-contrib/sse v1.0.0/go.mod h1:zNuFdwarAygJBht0NTKiSi3jRf6RbqeILZ9Sp6Slhe0=
-github.com/gin-gonic/gin v1.10.0 h1:nTuyha1TYqgedzytsKYqna+DfLos46nTv2ygFy86HFU=
-github.com/gin-gonic/gin v1.10.0/go.mod h1:4PMNQiOhvDRa013RKVbsiNwoyezlm2rm0uX/T7kzp5Y=
+github.com/dgraph-io/badger/v4 v4.9.2 h1:Wb5qw8gElqwV1a8msHTeQKova9b1V10heFKMIiPd80E=
+github.com/dgraph-io/badger/v4 v4.9.2/go.mod h1:nJjaJTUOSsQEBhsq209FmwCvMJzEA3e74RjZw6V2pQI=
+github.com/dgraph-io/ristretto/v2 v2.4.0 h1:I/w09yLjhdcVD2QV192UJcq8dPBaAJb9pOuMyNy0XlU=
+github.com/dgraph-io/ristretto/v2 v2.4.0/go.mod h1:0KsrXtXvnv0EqnzyowllbVJB8yBonswa2lTCK2gGo9E=
+github.com/dgryski/go-farm v0.0.0-20240924180020-3414d57e47da h1:aIftn67I1fkbMa512G+w+Pxci9hJPB8oMnkcP3iZF38=
+github.com/dgryski/go-farm v0.0.0-20240924180020-3414d57e47da/go.mod h1:SqUrOPUnsFjfmXRMNPybcSiG0BgUW2AuFH8PAnS2iTw=
+github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
+github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
+github.com/gabriel-vasile/mimetype v1.4.13 h1:46nXokslUBsAJE/wMsp5gtO500a4F3Nkz9Ufpk2AcUM=
+github.com/gabriel-vasile/mimetype v1.4.13/go.mod h1:d+9Oxyo1wTzWdyVUPMmXFvp4F9tea18J8ufA774AB3s=
+github.com/gin-contrib/sse v1.1.1 h1:uGYpNwTacv5R68bSGMapo62iLTRa9l5zxGCps4hK6ko=
+github.com/gin-contrib/sse v1.1.1/go.mod h1:QXzuVkA0YO7o/gun03UI1Q+FTI8ZV/n5t03kIQAI89s=
+github.com/gin-gonic/gin v1.12.0 h1:b3YAbrZtnf8N//yjKeU2+MQsh2mY5htkZidOM7O0wG8=
+github.com/gin-gonic/gin v1.12.0/go.mod h1:VxccKfsSllpKshkBWgVgRniFFAzFb9csfngsqANjnLc=
+github.com/go-logr/logr v1.2.2/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
+github.com/go-logr/logr v1.4.3 h1:CjnDlHq8ikf6E492q6eKboGOC0T8CDaOvkHCIg8idEI=
+github.com/go-logr/logr v1.4.3/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY=
+github.com/go-logr/stdr v1.2.2 h1:hSWxHoqTgW2S2qGc0LTAI563KZ5YKYRhT3MFKZMbjag=
+github.com/go-logr/stdr v1.2.2/go.mod h1:mMo/vtBO5dYbehREoey6XUKy/eSumjCCveDpRre4VKE=
 github.com/go-playground/assert/v2 v2.2.0 h1:JvknZsQTYeFEAhQwI4qEt9cyV5ONwRHC+lYKSsYSR8s=
 github.com/go-playground/assert/v2 v2.2.0/go.mod h1:VDjEfimB/XKnb+ZQfWdccd7VUvScMdVu0Titje2rxJ4=
 github.com/go-playground/locales v0.14.1 h1:EWaQ/wswjilfKLTECiXz7Rh+3BjFhfDFKv/oXslEjJA=
 github.com/go-playground/locales v0.14.1/go.mod h1:hxrqLVvrK65+Rwrd5Fc6F2O76J/NuW9t0sjnWqG1slY=
 github.com/go-playground/universal-translator v0.18.1 h1:Bcnm0ZwsGyWbCzImXv+pAJnYK9S473LQFuzCbDbfSFY=
 github.com/go-playground/universal-translator v0.18.1/go.mod h1:xekY+UJKNuX9WP91TpwSH2VMlDf28Uj24BCp08ZFTUY=
-github.com/go-playground/validator/v10 v10.25.0 h1:5Dh7cjvzR7BRZadnsVOzPhWsrwUr0nmsZJxEAnFLNO8=
-github.com/go-playground/validator/v10 v10.25.0/go.mod h1:GGzBIJMuE98Ic/kJsBXbz1x/7cByt++cQ+YOuDM5wus=
-github.com/goccy/go-json v0.10.5 h1:Fq85nIqj+gXn/S5ahsiTlK3TmC85qgirsdTP/+DeaC4=
-github.com/goccy/go-json v0.10.5/go.mod h1:oq7eo15ShAhp70Anwd5lgX2pLfOS3QCiwU/PULtXL6M=
-github.com/golang-jwt/jwt v3.2.1+incompatible h1:73Z+4BJcrTC+KczS6WvTPvRGOp1WmfEP4Q1lOd9Z/+c=
-github.com/golang-jwt/jwt/v5 v5.2.1 h1:OuVbFODueb089Lh128TAcimifWaLhJwVflnrgM17wHk=
-github.com/golang-jwt/jwt/v5 v5.2.1/go.mod h1:pqrtFR0X4osieyHYxtmOUWsAWrfe1Q5UVIyoH402zdk=
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@@ -61,58 +79,75 @@ github.com/kylelemons/godebug v1.1.0 h1:RPNrshWIDI6G2gRW9EHilWtl7Z6Sb1BR0xunSBf0
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internal/constants/responses.go

@@ -30,3 +30,12 @@ var QueryPlanResponse = gin.H{
 		},
 	},
 }
+
+var UnknownErrorResponse = gin.H{"message": "Unknown error"}
+var NotFoundResponse = gin.H{"message": "NotFound"}
+var ConflictResponse = gin.H{"message": "Conflict"}
+var BadRequestResponse = gin.H{"message": "BadRequest"}
+var PreconditionFailedResponse = gin.H{
+	"code":    "PreconditionFailed",
+	"message": "Operation cannot be performed because one of the specified precondition is not met.",
+}

internal/continuation_token/continuation_token.go

@@ -0,0 +1,145 @@
+package continuationtoken
+
+import (
+	"encoding/json"
+	"fmt"
+	"strconv"
+	"strings"
+
+	"github.com/pikami/cosmium/internal/logger"
+)
+
+type ContinuationTokenExternal struct {
+	Token string `json:"token"`
+	Range struct {
+		Min string `json:"min"`
+		Max string `json:"max"`
+	} `json:"range"`
+}
+
+type ContinuationToken struct {
+	Token struct {
+		ResourceId   string // RID
+		PageIndex    int    // RT
+		TotalResults int    // TRC
+		ISV          int    // ISV
+		IEO          int    // IEO
+		QCF          int    // QCF
+		LR           int    // LR
+	}
+	Range struct {
+		Min string
+		Max string
+	}
+}
+
+func Generate(resourceid string, pageIndex int, totalResults int) ContinuationToken {
+	ct := ContinuationToken{}
+	ct.Token.ResourceId = resourceid
+	ct.Token.PageIndex = pageIndex
+	ct.Token.TotalResults = totalResults
+	ct.Token.ISV = 2
+	ct.Token.IEO = 65567
+	ct.Token.QCF = 8
+	ct.Token.LR = 1
+	ct.Range.Min = ""
+	ct.Range.Max = "FF"
+
+	return ct
+}
+
+func GenerateDefault(resourceid string) ContinuationToken {
+	return Generate(resourceid, 0, 0)
+}
+
+func (ct *ContinuationToken) ToString() string {
+	token := fmt.Sprintf(
+		"-RID:~%s#RT:%d#TRC:%d#ISV:%d#IEO:%d#QCF:%d#LR:%d",
+		ct.Token.ResourceId,
+		ct.Token.PageIndex,
+		ct.Token.TotalResults,
+		ct.Token.ISV,
+		ct.Token.IEO,
+		ct.Token.QCF,
+		ct.Token.LR,
+	)
+
+	ect := ContinuationTokenExternal{}
+	ect.Token = token
+	ect.Range.Min = ct.Range.Min
+	ect.Range.Max = ct.Range.Max
+
+	json, err := json.Marshal(ect)
+	if err != nil {
+		logger.Error(err, "failed to marshal continuation token")
+		return ""
+	}
+
+	return string(json)
+}
+
+func FromString(token string) ContinuationToken {
+	ect := ContinuationTokenExternal{}
+	err := json.Unmarshal([]byte(token), &ect)
+	if err != nil {
+		logger.Error(err, "failed to unmarshal continuation token")
+		return ContinuationToken{}
+	}
+
+	ct, err := parseContinuationToken(ect.Token, ect.Range.Min, ect.Range.Max)
+	if err != nil {
+		logger.Error(err, "failed to parse continuation token")
+		return ContinuationToken{}
+	}
+
+	return *ct
+}
+
+func parseContinuationToken(token string, minRange string, maxRange string) (*ContinuationToken, error) {
+	const prefix = "-RID:~"
+	if !strings.HasPrefix(token, prefix) {
+		return nil, fmt.Errorf("invalid token prefix")
+	}
+
+	parts := strings.Split(token[len(prefix):], "#")
+	if len(parts) != 7 {
+		return nil, fmt.Errorf("invalid token format: expected 7 fields, got %d", len(parts))
+	}
+
+	ct := &ContinuationToken{}
+
+	ct.Token.ResourceId = parts[0]
+
+	parseIntField := func(part, key string) (int, error) {
+		if !strings.HasPrefix(part, key+":") {
+			return 0, fmt.Errorf("expected %s field", key)
+		}
+		return strconv.Atoi(strings.TrimPrefix(part, key+":"))
+	}
+
+	var err error
+
+	if ct.Token.PageIndex, err = parseIntField(parts[1], "RT"); err != nil {
+		return nil, err
+	}
+	if ct.Token.TotalResults, err = parseIntField(parts[2], "TRC"); err != nil {
+		return nil, err
+	}
+	if ct.Token.ISV, err = parseIntField(parts[3], "ISV"); err != nil {
+		return nil, err
+	}
+	if ct.Token.IEO, err = parseIntField(parts[4], "IEO"); err != nil {
+		return nil, err
+	}
+	if ct.Token.QCF, err = parseIntField(parts[5], "QCF"); err != nil {
+		return nil, err
+	}
+	if ct.Token.LR, err = parseIntField(parts[6], "LR"); err != nil {
+		return nil, err
+	}
+
+	ct.Range.Min = minRange
+	ct.Range.Max = maxRange
+
+	return ct, nil
+}

internal/continuation_token/continuation_token_test.go

@@ -0,0 +1,35 @@
+package continuationtoken
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func Test_Generate(t *testing.T) {
+	token := Generate("test-resource-id", 1, 100)
+
+	assert.Equal(t, "test-resource-id", token.Token.ResourceId)
+	assert.Equal(t, 1, token.Token.PageIndex)
+	assert.Equal(t, 100, token.Token.TotalResults)
+}
+
+func Test_FromString(t *testing.T) {
+	token := FromString("{\"token\":\"-RID:~test-resource-id#RT:1#TRC:100#ISV:2#IEO:65567#QCF:8#LR:1\",\"range\":{\"min\":\"\",\"max\":\"FF\"}}")
+
+	assert.Equal(t, "test-resource-id", token.Token.ResourceId)
+	assert.Equal(t, 1, token.Token.PageIndex)
+	assert.Equal(t, 100, token.Token.TotalResults)
+}
+
+func Test_ToString(t *testing.T) {
+	token := Generate("test-resource-id", 1, 100)
+	assert.Equal(t, "{\"token\":\"-RID:~test-resource-id#RT:1#TRC:100#ISV:2#IEO:65567#QCF:8#LR:1\",\"range\":{\"min\":\"\",\"max\":\"FF\"}}", token.ToString())
+}
+
+func Test_GenerateDefault(t *testing.T) {
+	token := GenerateDefault("test-resource-id")
+	assert.Equal(t, "test-resource-id", token.Token.ResourceId)
+	assert.Equal(t, 0, token.Token.PageIndex)
+	assert.Equal(t, 0, token.Token.TotalResults)
+}

internal/converters/document_to_rowtype.go

@@ -0,0 +1,20 @@
+package converters
+
+import (
+	"github.com/pikami/cosmium/internal/datastore"
+	memoryexecutor "github.com/pikami/cosmium/query_executors/memory_executor"
+)
+
+type DocumentToRowTypeIterator struct {
+	documents datastore.DocumentIterator
+}
+
+func NewDocumentToRowTypeIterator(documents datastore.DocumentIterator) *DocumentToRowTypeIterator {
+	return &DocumentToRowTypeIterator{
+		documents: documents,
+	}
+}
+
+func (di *DocumentToRowTypeIterator) Next() (memoryexecutor.RowType, datastore.DataStoreStatus) {
+	return di.documents.Next()
+}

internal/datastore/badger_datastore/badger_datastore.go

@@ -0,0 +1,136 @@
+package badgerdatastore
+
+import (
+	"encoding/json"
+	"log"
+	"os"
+	"time"
+
+	"github.com/dgraph-io/badger/v4"
+	"github.com/pikami/cosmium/internal/datastore"
+	"github.com/pikami/cosmium/internal/logger"
+)
+
+type BadgerDataStore struct {
+	db        *badger.DB
+	gcTicker  *time.Ticker
+	gcDone    chan struct{}
+	gcStopped chan struct{}
+}
+
+type BadgerDataStoreOptions struct {
+	InitialDataFilePath string
+	PersistDataFilePath string
+}
+
+func NewBadgerDataStore(options BadgerDataStoreOptions) *BadgerDataStore {
+	badgerOpts := badger.DefaultOptions(options.PersistDataFilePath)
+	badgerOpts = badgerOpts.WithLogger(newBadgerLogger())
+	if options.PersistDataFilePath == "" {
+		badgerOpts = badgerOpts.WithInMemory(true)
+	}
+
+	db, err := badger.Open(badgerOpts)
+	if err != nil {
+		panic(err)
+	}
+
+	gcTicker := time.NewTicker(5 * time.Minute)
+
+	ds := &BadgerDataStore{
+		db:        db,
+		gcTicker:  gcTicker,
+		gcDone:    make(chan struct{}),
+		gcStopped: make(chan struct{}),
+	}
+
+	ds.initializeDataStore(options.InitialDataFilePath)
+
+	go ds.runGarbageCollector()
+
+	return ds
+}
+
+func (r *BadgerDataStore) Close() {
+	if r.gcTicker != nil {
+		r.gcTicker.Stop()
+		close(r.gcDone)
+		<-r.gcStopped
+	}
+
+	r.db.Close()
+	r.db = nil
+}
+
+func (r *BadgerDataStore) DumpToJson() (string, error) {
+	logger.ErrorLn("Badger datastore does not support state export currently.")
+	return "{}", nil
+}
+
+func (r *BadgerDataStore) runGarbageCollector() {
+	defer close(r.gcStopped)
+
+	for {
+		select {
+		case <-r.gcTicker.C:
+			for {
+				err := r.db.RunValueLogGC(0.7)
+				if err != nil {
+					break
+				}
+			}
+		case <-r.gcDone:
+			return
+		}
+	}
+}
+
+func (r *BadgerDataStore) initializeDataStore(initialDataFilePath string) {
+	if initialDataFilePath == "" {
+		return
+	}
+
+	stat, err := os.Stat(initialDataFilePath)
+	if err != nil {
+		panic(err)
+	}
+
+	if stat.IsDir() {
+		logger.ErrorLn("Argument '-Persist' must be a path to file, not a directory.")
+		os.Exit(1)
+	}
+
+	jsonData, err := os.ReadFile(initialDataFilePath)
+	if err != nil {
+		log.Fatalf("Error reading state JSON file: %v", err)
+		return
+	}
+
+	var state datastore.InitialDataModel
+	if err := json.Unmarshal([]byte(jsonData), &state); err != nil {
+		log.Fatalf("Error parsing state JSON file: %v", err)
+		return
+	}
+
+	for dbName, dbModel := range state.Databases {
+		r.CreateDatabase(dbModel)
+		for colName, colModel := range state.Collections[dbName] {
+			r.CreateCollection(dbName, colModel)
+			for _, docModel := range state.Documents[dbName][colName] {
+				r.CreateDocument(dbName, colName, docModel)
+			}
+
+			for _, triggerModel := range state.Triggers[dbName][colName] {
+				r.CreateTrigger(dbName, colName, triggerModel)
+			}
+
+			for _, spModel := range state.StoredProcedures[dbName][colName] {
+				r.CreateStoredProcedure(dbName, colName, spModel)
+			}
+
+			for _, udfModel := range state.UserDefinedFunctions[dbName][colName] {
+				r.CreateUserDefinedFunction(dbName, colName, udfModel)
+			}
+		}
+	}
+}

internal/datastore/badger_datastore/badger_logger.go

@@ -0,0 +1,28 @@
+package badgerdatastore
+
+import (
+	"github.com/dgraph-io/badger/v4"
+	"github.com/pikami/cosmium/internal/logger"
+)
+
+type badgerLogger struct{}
+
+func newBadgerLogger() badger.Logger {
+	return &badgerLogger{}
+}
+
+func (l *badgerLogger) Errorf(format string, v ...interface{}) {
+	logger.Errorf(format, v...)
+}
+
+func (l *badgerLogger) Warningf(format string, v ...interface{}) {
+	logger.Infof(format, v...)
+}
+
+func (l *badgerLogger) Infof(format string, v ...interface{}) {
+	logger.Infof(format, v...)
+}
+
+func (l *badgerLogger) Debugf(format string, v ...interface{}) {
+	logger.Debugf(format, v...)
+}

internal/datastore/badger_datastore/collections.go

@@ -0,0 +1,105 @@
+package badgerdatastore
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/google/uuid"
+	"github.com/pikami/cosmium/internal/datastore"
+	"github.com/pikami/cosmium/internal/logger"
+	"github.com/pikami/cosmium/internal/resourceid"
+	structhidrators "github.com/pikami/cosmium/internal/struct_hidrators"
+)
+
+func (r *BadgerDataStore) GetAllCollections(databaseId string) ([]datastore.Collection, datastore.DataStoreStatus) {
+	exists, err := keyExists(r.db.NewTransaction(false), generateDatabaseKey(databaseId))
+	if err != nil {
+		logger.ErrorLn("Error while checking if database exists:", err)
+		return nil, datastore.Unknown
+	}
+
+	if !exists {
+		return nil, datastore.StatusNotFound
+	}
+
+	prefix := generateKey(resourceid.ResourceTypeCollection, databaseId, "", "") + "/"
+	colls, status := listByPrefix[datastore.Collection](r.db, prefix)
+	if status == datastore.StatusOk {
+		return colls, datastore.StatusOk
+	}
+
+	return nil, status
+}
+
+func (r *BadgerDataStore) GetCollection(databaseId string, collectionId string) (datastore.Collection, datastore.DataStoreStatus) {
+	collectionKey := generateCollectionKey(databaseId, collectionId)
+
+	txn := r.db.NewTransaction(false)
+	defer txn.Discard()
+
+	var collection datastore.Collection
+	status := getKey(txn, collectionKey, &collection)
+
+	return collection, status
+}
+
+func (r *BadgerDataStore) DeleteCollection(databaseId string, collectionId string) datastore.DataStoreStatus {
+	collectionKey := generateCollectionKey(databaseId, collectionId)
+
+	txn := r.db.NewTransaction(true)
+	defer txn.Discard()
+
+	prefixes := []string{
+		generateKey(resourceid.ResourceTypeDocument, databaseId, collectionId, "") + "/",
+		generateKey(resourceid.ResourceTypeTrigger, databaseId, collectionId, "") + "/",
+		generateKey(resourceid.ResourceTypeStoredProcedure, databaseId, collectionId, "") + "/",
+		generateKey(resourceid.ResourceTypeUserDefinedFunction, databaseId, collectionId, "") + "/",
+	}
+	for _, prefix := range prefixes {
+		if err := deleteKeysByPrefix(txn, prefix); err != nil {
+			return datastore.Unknown
+		}
+	}
+
+	deleteKey(txn, collectionKey)
+
+	err := txn.Commit()
+	if err != nil {
+		logger.ErrorLn("Error while committing transaction:", err)
+		return datastore.Unknown
+	}
+
+	return datastore.StatusOk
+}
+
+func (r *BadgerDataStore) CreateCollection(databaseId string, newCollection datastore.Collection) (datastore.Collection, datastore.DataStoreStatus) {
+	collectionKey := generateCollectionKey(databaseId, newCollection.ID)
+
+	txn := r.db.NewTransaction(true)
+	defer txn.Discard()
+
+	collectionExists, err := keyExists(txn, collectionKey)
+	if err != nil || collectionExists {
+		return datastore.Collection{}, datastore.Conflict
+	}
+
+	var database datastore.Database
+	status := getKey(txn, generateDatabaseKey(databaseId), &database)
+	if status != datastore.StatusOk {
+		return datastore.Collection{}, status
+	}
+
+	newCollection = structhidrators.Hidrate(newCollection).(datastore.Collection)
+
+	newCollection.TimeStamp = time.Now().Unix()
+	newCollection.ResourceID = resourceid.NewCombined(database.ResourceID, resourceid.New(resourceid.ResourceTypeCollection))
+	newCollection.ETag = fmt.Sprintf("\"%s\"", uuid.New())
+	newCollection.Self = fmt.Sprintf("dbs/%s/colls/%s/", database.ResourceID, newCollection.ResourceID)
+
+	status = insertKey(txn, collectionKey, newCollection)
+	if status != datastore.StatusOk {
+		return datastore.Collection{}, status
+	}
+
+	return newCollection, datastore.StatusOk
+}

internal/datastore/badger_datastore/databases.go

@@ -0,0 +1,81 @@
+package badgerdatastore
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/google/uuid"
+	"github.com/pikami/cosmium/internal/datastore"
+	"github.com/pikami/cosmium/internal/logger"
+	"github.com/pikami/cosmium/internal/resourceid"
+)
+
+func (r *BadgerDataStore) GetAllDatabases() ([]datastore.Database, datastore.DataStoreStatus) {
+	dbs, status := listByPrefix[datastore.Database](r.db, DatabaseKeyPrefix)
+	if status == datastore.StatusOk {
+		return dbs, datastore.StatusOk
+	}
+
+	return nil, status
+}
+
+func (r *BadgerDataStore) GetDatabase(id string) (datastore.Database, datastore.DataStoreStatus) {
+	databaseKey := generateDatabaseKey(id)
+
+	txn := r.db.NewTransaction(false)
+	defer txn.Discard()
+
+	var database datastore.Database
+	status := getKey(txn, databaseKey, &database)
+
+	return database, status
+}
+
+func (r *BadgerDataStore) DeleteDatabase(id string) datastore.DataStoreStatus {
+	databaseKey := generateDatabaseKey(id)
+
+	txn := r.db.NewTransaction(true)
+	defer txn.Discard()
+
+	prefixes := []string{
+		generateKey(resourceid.ResourceTypeCollection, id, "", "") + "/",
+		generateKey(resourceid.ResourceTypeDocument, id, "", "") + "/",
+		generateKey(resourceid.ResourceTypeTrigger, id, "", "") + "/",
+		generateKey(resourceid.ResourceTypeStoredProcedure, id, "", "") + "/",
+		generateKey(resourceid.ResourceTypeUserDefinedFunction, id, "", "") + "/",
+	}
+	for _, prefix := range prefixes {
+		if err := deleteKeysByPrefix(txn, prefix); err != nil {
+			return datastore.Unknown
+		}
+	}
+
+	deleteKey(txn, databaseKey)
+
+	err := txn.Commit()
+	if err != nil {
+		logger.ErrorLn("Error while committing transaction:", err)
+		return datastore.Unknown
+	}
+
+	return datastore.StatusOk
+}
+
+func (r *BadgerDataStore) CreateDatabase(newDatabase datastore.Database) (datastore.Database, datastore.DataStoreStatus) {
+	databaseKey := generateDatabaseKey(newDatabase.ID)
+
+	txn := r.db.NewTransaction(true)
+	defer txn.Discard()
+
+	newDatabase.TimeStamp = time.Now().Unix()
+	newDatabase.ResourceID = resourceid.New(resourceid.ResourceTypeDatabase)
+	newDatabase.ETag = fmt.Sprintf("\"%s\"", uuid.New())
+	newDatabase.Self = fmt.Sprintf("dbs/%s/", newDatabase.ResourceID)
+
+	status := insertKey(txn, databaseKey, newDatabase)
+	if status != datastore.StatusOk {
+		return datastore.Database{}, status
+	}
+
+	return newDatabase, datastore.StatusOk
+}

internal/datastore/badger_datastore/db_abstractions.go

@@ -0,0 +1,223 @@
+package badgerdatastore
+
+import (
+	"github.com/dgraph-io/badger/v4"
+	"github.com/pikami/cosmium/internal/datastore"
+	"github.com/pikami/cosmium/internal/logger"
+	"github.com/pikami/cosmium/internal/resourceid"
+	"github.com/vmihailenco/msgpack/v5"
+)
+
+const (
+	DatabaseKeyPrefix            = "DB:"
+	CollectionKeyPrefix          = "COL:"
+	DocumentKeyPrefix            = "DOC:"
+	TriggerKeyPrefix             = "TRG:"
+	StoredProcedureKeyPrefix     = "SP:"
+	UserDefinedFunctionKeyPrefix = "UDF:"
+)
+
+func generateKey(
+	resourceType resourceid.ResourceType,
+	databaseId string,
+	collectionId string,
+	resourceId string,
+) string {
+	result := ""
+
+	switch resourceType {
+	case resourceid.ResourceTypeDatabase:
+		result += DatabaseKeyPrefix
+	case resourceid.ResourceTypeCollection:
+		result += CollectionKeyPrefix
+	case resourceid.ResourceTypeDocument:
+		result += DocumentKeyPrefix
+	case resourceid.ResourceTypeTrigger:
+		result += TriggerKeyPrefix
+	case resourceid.ResourceTypeStoredProcedure:
+		result += StoredProcedureKeyPrefix
+	case resourceid.ResourceTypeUserDefinedFunction:
+		result += UserDefinedFunctionKeyPrefix
+	}
+
+	if databaseId != "" {
+		result += databaseId
+	}
+
+	if collectionId != "" {
+		result += "/colls/" + collectionId
+	}
+
+	if resourceId != "" {
+		result += "/" + resourceId
+	}
+
+	return result
+}
+
+func generateDatabaseKey(databaseId string) string {
+	return generateKey(resourceid.ResourceTypeDatabase, databaseId, "", "")
+}
+
+func generateCollectionKey(databaseId string, collectionId string) string {
+	return generateKey(resourceid.ResourceTypeCollection, databaseId, collectionId, "")
+}
+
+func generateDocumentKey(databaseId string, collectionId string, documentId string) string {
+	return generateKey(resourceid.ResourceTypeDocument, databaseId, collectionId, documentId)
+}
+
+func generateTriggerKey(databaseId string, collectionId string, triggerId string) string {
+	return generateKey(resourceid.ResourceTypeTrigger, databaseId, collectionId, triggerId)
+}
+
+func generateStoredProcedureKey(databaseId string, collectionId string, storedProcedureId string) string {
+	return generateKey(resourceid.ResourceTypeStoredProcedure, databaseId, collectionId, storedProcedureId)
+}
+
+func generateUserDefinedFunctionKey(databaseId string, collectionId string, udfId string) string {
+	return generateKey(resourceid.ResourceTypeUserDefinedFunction, databaseId, collectionId, udfId)
+}
+
+func insertKey(txn *badger.Txn, key string, value interface{}) datastore.DataStoreStatus {
+	_, err := txn.Get([]byte(key))
+	if err == nil {
+		return datastore.Conflict
+	}
+
+	if err != badger.ErrKeyNotFound {
+		logger.ErrorLn("Error while checking if key exists:", err)
+		return datastore.Unknown
+	}
+
+	buf, err := msgpack.Marshal(value)
+	if err != nil {
+		logger.ErrorLn("Error while encoding value:", err)
+		return datastore.Unknown
+	}
+
+	err = txn.Set([]byte(key), buf)
+	if err != nil {
+		logger.ErrorLn("Error while setting key:", err)
+		return datastore.Unknown
+	}
+
+	err = txn.Commit()
+	if err != nil {
+		logger.ErrorLn("Error while committing transaction:", err)
+		return datastore.Unknown
+	}
+
+	return datastore.StatusOk
+}
+
+func getKey(txn *badger.Txn, key string, value interface{}) datastore.DataStoreStatus {
+	item, err := txn.Get([]byte(key))
+	if err != nil {
+		if err == badger.ErrKeyNotFound {
+			return datastore.StatusNotFound
+		}
+		logger.ErrorLn("Error while getting key:", err)
+		return datastore.Unknown
+	}
+
+	val, err := item.ValueCopy(nil)
+	if err != nil {
+		logger.ErrorLn("Error while copying value:", err)
+		return datastore.Unknown
+	}
+
+	if value == nil {
+		logger.ErrorLn("getKey called with nil value")
+		return datastore.Unknown
+	}
+
+	err = msgpack.Unmarshal(val, &value)
+	if err != nil {
+		logger.ErrorLn("Error while decoding value:", err)
+		return datastore.Unknown
+	}
+
+	return datastore.StatusOk
+}
+
+func keyExists(txn *badger.Txn, key string) (bool, error) {
+	_, err := txn.Get([]byte(key))
+	if err == nil {
+		return true, nil
+	}
+
+	if err == badger.ErrKeyNotFound {
+		return false, nil
+	}
+
+	return false, err
+}
+
+func listByPrefix[T any](db *badger.DB, prefix string) ([]T, datastore.DataStoreStatus) {
+	results := make([]T, 0)
+
+	err := db.View(func(txn *badger.Txn) error {
+		opts := badger.DefaultIteratorOptions
+		opts.Prefix = []byte(prefix)
+		it := txn.NewIterator(opts)
+		defer it.Close()
+
+		for it.Rewind(); it.Valid(); it.Next() {
+			item := it.Item()
+			var entry T
+
+			status := getKey(txn, string(item.Key()), &entry)
+			if status != datastore.StatusOk {
+				logger.ErrorLn("Failed to retrieve entry:", string(item.Key()))
+				continue
+			}
+
+			results = append(results, entry)
+		}
+		return nil
+	})
+
+	if err != nil {
+		logger.ErrorLn("Error while listing entries:", err)
+		return nil, datastore.Unknown
+	}
+
+	return results, datastore.StatusOk
+}
+
+func deleteKeysByPrefix(txn *badger.Txn, prefix string) error {
+	opts := badger.DefaultIteratorOptions
+	opts.Prefix = []byte(prefix)
+	it := txn.NewIterator(opts)
+	defer it.Close()
+
+	for it.Rewind(); it.Valid(); it.Next() {
+		key := it.Item().KeyCopy(nil)
+		if err := txn.Delete(key); err != nil {
+			logger.ErrorLn("Failed to delete key:", string(key), "Error:", err)
+			return err
+		}
+	}
+
+	return nil
+}
+
+func deleteKey(txn *badger.Txn, key string) error {
+	_, err := txn.Get([]byte(key))
+	if err == badger.ErrKeyNotFound {
+		return nil
+	}
+	if err != nil {
+		logger.ErrorLn("Error while checking if key exists:", err)
+		return err
+	}
+
+	err = txn.Delete([]byte(key))
+	if err != nil {
+		logger.ErrorLn("Error while deleting key:", err)
+		return err
+	}
+
+	return nil
+}

internal/datastore/badger_datastore/document_iterator.go

@@ -0,0 +1,58 @@
+package badgerdatastore
+
+import (
+	"github.com/dgraph-io/badger/v4"
+	"github.com/pikami/cosmium/internal/datastore"
+	"github.com/pikami/cosmium/internal/logger"
+	"github.com/vmihailenco/msgpack/v5"
+)
+
+type BadgerDocumentIterator struct {
+	txn    *badger.Txn
+	it     *badger.Iterator
+	prefix string
+}
+
+func NewBadgerDocumentIterator(txn *badger.Txn, prefix string) *BadgerDocumentIterator {
+	opts := badger.DefaultIteratorOptions
+	opts.Prefix = []byte(prefix)
+
+	it := txn.NewIterator(opts)
+	it.Rewind()
+
+	return &BadgerDocumentIterator{
+		txn:    txn,
+		it:     it,
+		prefix: prefix,
+	}
+}
+
+func (i *BadgerDocumentIterator) Next() (datastore.Document, datastore.DataStoreStatus) {
+	if !i.it.Valid() {
+		i.it.Close()
+		return datastore.Document{}, datastore.IterEOF
+	}
+
+	item := i.it.Item()
+	val, err := item.ValueCopy(nil)
+	if err != nil {
+		logger.ErrorLn("Error while copying value:", err)
+		return datastore.Document{}, datastore.Unknown
+	}
+
+	current := &datastore.Document{}
+	err = msgpack.Unmarshal(val, &current)
+	if err != nil {
+		logger.ErrorLn("Error while decoding value:", err)
+		return datastore.Document{}, datastore.Unknown
+	}
+
+	i.it.Next()
+
+	return *current, datastore.StatusOk
+}
+
+func (i *BadgerDocumentIterator) Close() {
+	i.it.Close()
+	i.txn.Discard()
+}

internal/datastore/badger_datastore/documents.go

@@ -0,0 +1,129 @@
+package badgerdatastore
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/google/uuid"
+	"github.com/pikami/cosmium/internal/datastore"
+	"github.com/pikami/cosmium/internal/logger"
+	"github.com/pikami/cosmium/internal/resourceid"
+)
+
+func (r *BadgerDataStore) GetAllDocuments(databaseId string, collectionId string) ([]datastore.Document, datastore.DataStoreStatus) {
+	txn := r.db.NewTransaction(false)
+	defer txn.Discard()
+
+	dbExists, err := keyExists(txn, generateDatabaseKey(databaseId))
+	if err != nil || !dbExists {
+		return nil, datastore.StatusNotFound
+	}
+
+	collExists, err := keyExists(txn, generateCollectionKey(databaseId, collectionId))
+	if err != nil || !collExists {
+		return nil, datastore.StatusNotFound
+	}
+
+	prefix := generateKey(resourceid.ResourceTypeDocument, databaseId, collectionId, "") + "/"
+	docs, status := listByPrefix[datastore.Document](r.db, prefix)
+	if status == datastore.StatusOk {
+		return docs, datastore.StatusOk
+	}
+
+	return nil, status
+}
+
+func (r *BadgerDataStore) GetDocumentIterator(databaseId string, collectionId string) (datastore.DocumentIterator, datastore.DataStoreStatus) {
+	txn := r.db.NewTransaction(false)
+
+	dbExists, err := keyExists(txn, generateDatabaseKey(databaseId))
+	if err != nil || !dbExists {
+		return nil, datastore.StatusNotFound
+	}
+
+	collExists, err := keyExists(txn, generateCollectionKey(databaseId, collectionId))
+	if err != nil || !collExists {
+		return nil, datastore.StatusNotFound
+	}
+
+	prefix := generateKey(resourceid.ResourceTypeDocument, databaseId, collectionId, "") + "/"
+	iter := NewBadgerDocumentIterator(txn, prefix)
+	return iter, datastore.StatusOk
+}
+
+func (r *BadgerDataStore) GetDocument(databaseId string, collectionId string, documentId string) (datastore.Document, datastore.DataStoreStatus) {
+	documentKey := generateDocumentKey(databaseId, collectionId, documentId)
+
+	txn := r.db.NewTransaction(false)
+	defer txn.Discard()
+
+	var document datastore.Document
+	status := getKey(txn, documentKey, &document)
+
+	return document, status
+}
+
+func (r *BadgerDataStore) DeleteDocument(databaseId string, collectionId string, documentId string) datastore.DataStoreStatus {
+	documentKey := generateDocumentKey(databaseId, collectionId, documentId)
+
+	txn := r.db.NewTransaction(true)
+	defer txn.Discard()
+
+	exists, err := keyExists(txn, documentKey)
+	if err != nil {
+		return datastore.Unknown
+	}
+	if !exists {
+		return datastore.StatusNotFound
+	}
+
+	err = txn.Delete([]byte(documentKey))
+	if err != nil {
+		logger.ErrorLn("Error while deleting document:", err)
+		return datastore.Unknown
+	}
+
+	err = txn.Commit()
+	if err != nil {
+		logger.ErrorLn("Error while committing transaction:", err)
+		return datastore.Unknown
+	}
+
+	return datastore.StatusOk
+}
+
+func (r *BadgerDataStore) CreateDocument(databaseId string, collectionId string, document map[string]interface{}) (datastore.Document, datastore.DataStoreStatus) {
+	txn := r.db.NewTransaction(true)
+	defer txn.Discard()
+
+	var database datastore.Database
+	status := getKey(txn, generateDatabaseKey(databaseId), &database)
+	if status != datastore.StatusOk {
+		return datastore.Document{}, status
+	}
+
+	var collection datastore.Collection
+	status = getKey(txn, generateCollectionKey(databaseId, collectionId), &collection)
+	if status != datastore.StatusOk {
+		return datastore.Document{}, status
+	}
+
+	var ok bool
+	var documentId string
+	if documentId, ok = document["id"].(string); !ok || documentId == "" {
+		documentId = fmt.Sprint(uuid.New())
+		document["id"] = documentId
+	}
+
+	document["_ts"] = time.Now().Unix()
+	document["_rid"] = resourceid.NewCombined(collection.ResourceID, resourceid.New(resourceid.ResourceTypeDocument))
+	document["_etag"] = fmt.Sprintf("\"%s\"", uuid.New())
+	document["_self"] = fmt.Sprintf("dbs/%s/colls/%s/docs/%s/", database.ResourceID, collection.ResourceID, document["_rid"])
+
+	status = insertKey(txn, generateDocumentKey(databaseId, collectionId, documentId), document)
+	if status != datastore.StatusOk {
+		return datastore.Document{}, status
+	}
+
+	return document, datastore.StatusOk
+}

internal/datastore/badger_datastore/partition_key_ranges.go

@@ -0,0 +1,53 @@
+package badgerdatastore
+
+import (
+	"fmt"
+
+	"github.com/google/uuid"
+	"github.com/pikami/cosmium/internal/datastore"
+	"github.com/pikami/cosmium/internal/resourceid"
+)
+
+// I have no idea what this is tbh
+func (r *BadgerDataStore) GetPartitionKeyRanges(databaseId string, collectionId string) ([]datastore.PartitionKeyRange, datastore.DataStoreStatus) {
+	databaseRid := databaseId
+	collectionRid := collectionId
+	var timestamp int64 = 0
+
+	txn := r.db.NewTransaction(false)
+	defer txn.Discard()
+
+	var database datastore.Database
+	status := getKey(txn, generateDatabaseKey(databaseId), &database)
+	if status != datastore.StatusOk {
+		databaseRid = database.ResourceID
+	}
+
+	var collection datastore.Collection
+	status = getKey(txn, generateCollectionKey(databaseId, collectionId), &collection)
+	if status != datastore.StatusOk {
+		collectionRid = collection.ResourceID
+		timestamp = collection.TimeStamp
+	}
+
+	pkrResourceId := resourceid.NewCombined(collectionRid, resourceid.New(resourceid.ResourceTypePartitionKeyRange))
+	pkrSelf := fmt.Sprintf("dbs/%s/colls/%s/pkranges/%s/", databaseRid, collectionRid, pkrResourceId)
+	etag := fmt.Sprintf("\"%s\"", uuid.New())
+
+	return []datastore.PartitionKeyRange{
+		{
+			ResourceID:         pkrResourceId,
+			ID:                 "0",
+			Etag:               etag,
+			MinInclusive:       "",
+			MaxExclusive:       "FF",
+			RidPrefix:          0,
+			Self:               pkrSelf,
+			ThroughputFraction: 1,
+			Status:             "online",
+			Parents:            []interface{}{},
+			TimeStamp:          timestamp,
+			Lsn:                17,
+		},
+	}, datastore.StatusOk
+}

internal/datastore/badger_datastore/stored_procedures.go

@@ -0,0 +1,108 @@
+package badgerdatastore
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/google/uuid"
+	"github.com/pikami/cosmium/internal/datastore"
+	"github.com/pikami/cosmium/internal/logger"
+	"github.com/pikami/cosmium/internal/resourceid"
+)
+
+func (r *BadgerDataStore) GetAllStoredProcedures(databaseId string, collectionId string) ([]datastore.StoredProcedure, datastore.DataStoreStatus) {
+	txn := r.db.NewTransaction(false)
+	defer txn.Discard()
+
+	dbExists, err := keyExists(txn, generateDatabaseKey(databaseId))
+	if err != nil || !dbExists {
+		return nil, datastore.StatusNotFound
+	}
+
+	collExists, err := keyExists(txn, generateCollectionKey(databaseId, collectionId))
+	if err != nil || !collExists {
+		return nil, datastore.StatusNotFound
+	}
+
+	prefix := generateKey(resourceid.ResourceTypeStoredProcedure, databaseId, collectionId, "") + "/"
+	storedProcedures, status := listByPrefix[datastore.StoredProcedure](r.db, prefix)
+	if status == datastore.StatusOk {
+		return storedProcedures, datastore.StatusOk
+	}
+
+	return nil, status
+}
+
+func (r *BadgerDataStore) GetStoredProcedure(databaseId string, collectionId string, storedProcedureId string) (datastore.StoredProcedure, datastore.DataStoreStatus) {
+	storedProcedureKey := generateStoredProcedureKey(databaseId, collectionId, storedProcedureId)
+
+	txn := r.db.NewTransaction(false)
+	defer txn.Discard()
+
+	var storedProcedure datastore.StoredProcedure
+	status := getKey(txn, storedProcedureKey, &storedProcedure)
+
+	return storedProcedure, status
+}
+
+func (r *BadgerDataStore) DeleteStoredProcedure(databaseId string, collectionId string, storedProcedureId string) datastore.DataStoreStatus {
+	storedProcedureKey := generateStoredProcedureKey(databaseId, collectionId, storedProcedureId)
+
+	txn := r.db.NewTransaction(true)
+	defer txn.Discard()
+
+	exists, err := keyExists(txn, storedProcedureKey)
+	if err != nil {
+		return datastore.Unknown
+	}
+	if !exists {
+		return datastore.StatusNotFound
+	}
+
+	err = txn.Delete([]byte(storedProcedureKey))
+	if err != nil {
+		logger.ErrorLn("Error while deleting stored procedure:", err)
+		return datastore.Unknown
+	}
+
+	err = txn.Commit()
+	if err != nil {
+		logger.ErrorLn("Error while committing transaction:", err)
+		return datastore.Unknown
+	}
+
+	return datastore.StatusOk
+}
+
+func (r *BadgerDataStore) CreateStoredProcedure(databaseId string, collectionId string, storedProcedure datastore.StoredProcedure) (datastore.StoredProcedure, datastore.DataStoreStatus) {
+	txn := r.db.NewTransaction(true)
+	defer txn.Discard()
+
+	if storedProcedure.ID == "" {
+		return datastore.StoredProcedure{}, datastore.BadRequest
+	}
+
+	var database datastore.Database
+	status := getKey(txn, generateDatabaseKey(databaseId), &database)
+	if status != datastore.StatusOk {
+		return datastore.StoredProcedure{}, status
+	}
+
+	var collection datastore.Collection
+	status = getKey(txn, generateCollectionKey(databaseId, collectionId), &collection)
+	if status != datastore.StatusOk {
+		return datastore.StoredProcedure{}, status
+	}
+
+	storedProcedure.TimeStamp = time.Now().Unix()
+	storedProcedure.ResourceID = resourceid.NewCombined(collection.ResourceID, resourceid.New(resourceid.ResourceTypeStoredProcedure))
+	storedProcedure.ETag = fmt.Sprintf("\"%s\"", uuid.New())
+	storedProcedure.Self = fmt.Sprintf("dbs/%s/colls/%s/sprocs/%s/", database.ResourceID, collection.ResourceID, storedProcedure.ResourceID)
+
+	status = insertKey(txn, generateStoredProcedureKey(databaseId, collectionId, storedProcedure.ID), storedProcedure)
+	if status != datastore.StatusOk {
+		return datastore.StoredProcedure{}, status
+	}
+
+	return storedProcedure, datastore.StatusOk
+}

internal/datastore/badger_datastore/triggers.go

@@ -0,0 +1,108 @@
+package badgerdatastore
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/google/uuid"
+	"github.com/pikami/cosmium/internal/datastore"
+	"github.com/pikami/cosmium/internal/logger"
+	"github.com/pikami/cosmium/internal/resourceid"
+)
+
+func (r *BadgerDataStore) GetAllTriggers(databaseId string, collectionId string) ([]datastore.Trigger, datastore.DataStoreStatus) {
+	txn := r.db.NewTransaction(false)
+	defer txn.Discard()
+
+	dbExists, err := keyExists(txn, generateDatabaseKey(databaseId))
+	if err != nil || !dbExists {
+		return nil, datastore.StatusNotFound
+	}
+
+	collExists, err := keyExists(txn, generateCollectionKey(databaseId, collectionId))
+	if err != nil || !collExists {
+		return nil, datastore.StatusNotFound
+	}
+
+	prefix := generateKey(resourceid.ResourceTypeTrigger, databaseId, collectionId, "") + "/"
+	triggers, status := listByPrefix[datastore.Trigger](r.db, prefix)
+	if status == datastore.StatusOk {
+		return triggers, datastore.StatusOk
+	}
+
+	return nil, status
+}
+
+func (r *BadgerDataStore) GetTrigger(databaseId string, collectionId string, triggerId string) (datastore.Trigger, datastore.DataStoreStatus) {
+	triggerKey := generateTriggerKey(databaseId, collectionId, triggerId)
+
+	txn := r.db.NewTransaction(false)
+	defer txn.Discard()
+
+	var trigger datastore.Trigger
+	status := getKey(txn, triggerKey, &trigger)
+
+	return trigger, status
+}
+
+func (r *BadgerDataStore) DeleteTrigger(databaseId string, collectionId string, triggerId string) datastore.DataStoreStatus {
+	triggerKey := generateTriggerKey(databaseId, collectionId, triggerId)
+
+	txn := r.db.NewTransaction(true)
+	defer txn.Discard()
+
+	exists, err := keyExists(txn, triggerKey)
+	if err != nil {
+		return datastore.Unknown
+	}
+	if !exists {
+		return datastore.StatusNotFound
+	}
+
+	err = txn.Delete([]byte(triggerKey))
+	if err != nil {
+		logger.ErrorLn("Error while deleting trigger:", err)
+		return datastore.Unknown
+	}
+
+	err = txn.Commit()
+	if err != nil {
+		logger.ErrorLn("Error while committing transaction:", err)
+		return datastore.Unknown
+	}
+
+	return datastore.StatusOk
+}
+
+func (r *BadgerDataStore) CreateTrigger(databaseId string, collectionId string, trigger datastore.Trigger) (datastore.Trigger, datastore.DataStoreStatus) {
+	txn := r.db.NewTransaction(true)
+	defer txn.Discard()
+
+	if trigger.ID == "" {
+		return datastore.Trigger{}, datastore.BadRequest
+	}
+
+	var database datastore.Database
+	status := getKey(txn, generateDatabaseKey(databaseId), &database)
+	if status != datastore.StatusOk {
+		return datastore.Trigger{}, status
+	}
+
+	var collection datastore.Collection
+	status = getKey(txn, generateCollectionKey(databaseId, collectionId), &collection)
+	if status != datastore.StatusOk {
+		return datastore.Trigger{}, status
+	}
+
+	trigger.TimeStamp = time.Now().Unix()
+	trigger.ResourceID = resourceid.NewCombined(collection.ResourceID, resourceid.New(resourceid.ResourceTypeTrigger))
+	trigger.ETag = fmt.Sprintf("\"%s\"", uuid.New())
+	trigger.Self = fmt.Sprintf("dbs/%s/colls/%s/triggers/%s/", database.ResourceID, collection.ResourceID, trigger.ResourceID)
+
+	status = insertKey(txn, generateTriggerKey(databaseId, collectionId, trigger.ID), trigger)
+	if status != datastore.StatusOk {
+		return datastore.Trigger{}, status
+	}
+
+	return trigger, datastore.StatusOk
+}

internal/datastore/badger_datastore/user_defined_functions.go

@@ -0,0 +1,108 @@
+package badgerdatastore
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/google/uuid"
+	"github.com/pikami/cosmium/internal/datastore"
+	"github.com/pikami/cosmium/internal/logger"
+	"github.com/pikami/cosmium/internal/resourceid"
+)
+
+func (r *BadgerDataStore) GetAllUserDefinedFunctions(databaseId string, collectionId string) ([]datastore.UserDefinedFunction, datastore.DataStoreStatus) {
+	txn := r.db.NewTransaction(false)
+	defer txn.Discard()
+
+	dbExists, err := keyExists(txn, generateDatabaseKey(databaseId))
+	if err != nil || !dbExists {
+		return nil, datastore.StatusNotFound
+	}
+
+	collExists, err := keyExists(txn, generateCollectionKey(databaseId, collectionId))
+	if err != nil || !collExists {
+		return nil, datastore.StatusNotFound
+	}
+
+	prefix := generateKey(resourceid.ResourceTypeUserDefinedFunction, databaseId, collectionId, "") + "/"
+	udfs, status := listByPrefix[datastore.UserDefinedFunction](r.db, prefix)
+	if status == datastore.StatusOk {
+		return udfs, datastore.StatusOk
+	}
+
+	return nil, status
+}
+
+func (r *BadgerDataStore) GetUserDefinedFunction(databaseId string, collectionId string, udfId string) (datastore.UserDefinedFunction, datastore.DataStoreStatus) {
+	udfKey := generateUserDefinedFunctionKey(databaseId, collectionId, udfId)
+
+	txn := r.db.NewTransaction(false)
+	defer txn.Discard()
+
+	var udf datastore.UserDefinedFunction
+	status := getKey(txn, udfKey, &udf)
+
+	return udf, status
+}
+
+func (r *BadgerDataStore) DeleteUserDefinedFunction(databaseId string, collectionId string, udfId string) datastore.DataStoreStatus {
+	udfKey := generateUserDefinedFunctionKey(databaseId, collectionId, udfId)
+
+	txn := r.db.NewTransaction(true)
+	defer txn.Discard()
+
+	exists, err := keyExists(txn, udfKey)
+	if err != nil {
+		return datastore.Unknown
+	}
+	if !exists {
+		return datastore.StatusNotFound
+	}
+
+	err = txn.Delete([]byte(udfKey))
+	if err != nil {
+		logger.ErrorLn("Error while deleting user defined function:", err)
+		return datastore.Unknown
+	}
+
+	err = txn.Commit()
+	if err != nil {
+		logger.ErrorLn("Error while committing transaction:", err)
+		return datastore.Unknown
+	}
+
+	return datastore.StatusOk
+}
+
+func (r *BadgerDataStore) CreateUserDefinedFunction(databaseId string, collectionId string, udf datastore.UserDefinedFunction) (datastore.UserDefinedFunction, datastore.DataStoreStatus) {
+	txn := r.db.NewTransaction(true)
+	defer txn.Discard()
+
+	if udf.ID == "" {
+		return datastore.UserDefinedFunction{}, datastore.BadRequest
+	}
+
+	var database datastore.Database
+	status := getKey(txn, generateDatabaseKey(databaseId), &database)
+	if status != datastore.StatusOk {
+		return datastore.UserDefinedFunction{}, status
+	}
+
+	var collection datastore.Collection
+	status = getKey(txn, generateCollectionKey(databaseId, collectionId), &collection)
+	if status != datastore.StatusOk {
+		return datastore.UserDefinedFunction{}, status
+	}
+
+	udf.TimeStamp = time.Now().Unix()
+	udf.ResourceID = resourceid.NewCombined(collection.ResourceID, resourceid.New(resourceid.ResourceTypeUserDefinedFunction))
+	udf.ETag = fmt.Sprintf("\"%s\"", uuid.New())
+	udf.Self = fmt.Sprintf("dbs/%s/colls/%s/udfs/%s/", database.ResourceID, collection.ResourceID, udf.ResourceID)
+
+	status = insertKey(txn, generateUserDefinedFunctionKey(databaseId, collectionId, udf.ID), udf)
+	if status != datastore.StatusOk {
+		return datastore.UserDefinedFunction{}, status
+	}
+
+	return udf, datastore.StatusOk
+}

internal/datastore/datastore.go

@@ -0,0 +1,44 @@
+package datastore
+
+type DataStore interface {
+	GetAllDatabases() ([]Database, DataStoreStatus)
+	GetDatabase(databaseId string) (Database, DataStoreStatus)
+	DeleteDatabase(databaseId string) DataStoreStatus
+	CreateDatabase(newDatabase Database) (Database, DataStoreStatus)
+
+	GetAllCollections(databaseId string) ([]Collection, DataStoreStatus)
+	GetCollection(databaseId string, collectionId string) (Collection, DataStoreStatus)
+	DeleteCollection(databaseId string, collectionId string) DataStoreStatus
+	CreateCollection(databaseId string, newCollection Collection) (Collection, DataStoreStatus)
+
+	GetAllDocuments(databaseId string, collectionId string) ([]Document, DataStoreStatus)
+	GetDocumentIterator(databaseId string, collectionId string) (DocumentIterator, DataStoreStatus)
+	GetDocument(databaseId string, collectionId string, documentId string) (Document, DataStoreStatus)
+	DeleteDocument(databaseId string, collectionId string, documentId string) DataStoreStatus
+	CreateDocument(databaseId string, collectionId string, document map[string]interface{}) (Document, DataStoreStatus)
+
+	GetAllTriggers(databaseId string, collectionId string) ([]Trigger, DataStoreStatus)
+	GetTrigger(databaseId string, collectionId string, triggerId string) (Trigger, DataStoreStatus)
+	DeleteTrigger(databaseId string, collectionId string, triggerId string) DataStoreStatus
+	CreateTrigger(databaseId string, collectionId string, trigger Trigger) (Trigger, DataStoreStatus)
+
+	GetAllStoredProcedures(databaseId string, collectionId string) ([]StoredProcedure, DataStoreStatus)
+	GetStoredProcedure(databaseId string, collectionId string, storedProcedureId string) (StoredProcedure, DataStoreStatus)
+	DeleteStoredProcedure(databaseId string, collectionId string, storedProcedureId string) DataStoreStatus
+	CreateStoredProcedure(databaseId string, collectionId string, storedProcedure StoredProcedure) (StoredProcedure, DataStoreStatus)
+
+	GetAllUserDefinedFunctions(databaseId string, collectionId string) ([]UserDefinedFunction, DataStoreStatus)
+	GetUserDefinedFunction(databaseId string, collectionId string, udfId string) (UserDefinedFunction, DataStoreStatus)
+	DeleteUserDefinedFunction(databaseId string, collectionId string, udfId string) DataStoreStatus
+	CreateUserDefinedFunction(databaseId string, collectionId string, udf UserDefinedFunction) (UserDefinedFunction, DataStoreStatus)
+
+	GetPartitionKeyRanges(databaseId string, collectionId string) ([]PartitionKeyRange, DataStoreStatus)
+
+	Close()
+	DumpToJson() (string, error)
+}
+
+type DocumentIterator interface {
+	Next() (Document, DataStoreStatus)
+	Close()
+}

internal/datastore/initial_data.go

@@ -0,0 +1,21 @@
+package datastore
+
+type InitialDataModel struct {
+	// Map databaseId -> Database
+	Databases map[string]Database `json:"databases"`
+
+	// Map databaseId -> collectionId -> Collection
+	Collections map[string]map[string]Collection `json:"collections"`
+
+	// Map databaseId -> collectionId -> documentId -> Documents
+	Documents map[string]map[string]map[string]Document `json:"documents"`
+
+	// Map databaseId -> collectionId -> triggerId -> Trigger
+	Triggers map[string]map[string]map[string]Trigger `json:"triggers"`
+
+	// Map databaseId -> collectionId -> spId -> StoredProcedure
+	StoredProcedures map[string]map[string]map[string]StoredProcedure `json:"sprocs"`
+
+	// Map databaseId -> collectionId -> udfId -> UserDefinedFunction
+	UserDefinedFunctions map[string]map[string]map[string]UserDefinedFunction `json:"udfs"`
+}

internal/datastore/json_datastore/array_document_iterator.go

@@ -0,0 +1,21 @@
+package jsondatastore
+
+import "github.com/pikami/cosmium/internal/datastore"
+
+type ArrayDocumentIterator struct {
+	documents []datastore.Document
+	index     int
+}
+
+func (i *ArrayDocumentIterator) Next() (datastore.Document, datastore.DataStoreStatus) {
+	i.index++
+	if i.index >= len(i.documents) {
+		return datastore.Document{}, datastore.StatusNotFound
+	}
+
+	return i.documents[i.index], datastore.StatusOk
+}
+
+func (i *ArrayDocumentIterator) Close() {
+	i.documents = []datastore.Document{}
+}

internal/datastore/json_datastore/collections.go

@@ -1,52 +1,52 @@
-package repositories
+package jsondatastore
 
 import (
 	"fmt"
 	"time"
 
 	"github.com/google/uuid"
-	repositorymodels "github.com/pikami/cosmium/internal/repository_models"
+	"github.com/pikami/cosmium/internal/datastore"
 	"github.com/pikami/cosmium/internal/resourceid"
 	structhidrators "github.com/pikami/cosmium/internal/struct_hidrators"
 	"golang.org/x/exp/maps"
 )
 
-func (r *DataRepository) GetAllCollections(databaseId string) ([]repositorymodels.Collection, repositorymodels.RepositoryStatus) {
+func (r *JsonDataStore) GetAllCollections(databaseId string) ([]datastore.Collection, datastore.DataStoreStatus) {
 	r.storeState.RLock()
 	defer r.storeState.RUnlock()
 
 	if _, ok := r.storeState.Databases[databaseId]; !ok {
-		return make([]repositorymodels.Collection, 0), repositorymodels.StatusNotFound
+		return make([]datastore.Collection, 0), datastore.StatusNotFound
 	}
 
-	return maps.Values(r.storeState.Collections[databaseId]), repositorymodels.StatusOk
+	return maps.Values(r.storeState.Collections[databaseId]), datastore.StatusOk
 }
 
-func (r *DataRepository) GetCollection(databaseId string, collectionId string) (repositorymodels.Collection, repositorymodels.RepositoryStatus) {
+func (r *JsonDataStore) GetCollection(databaseId string, collectionId string) (datastore.Collection, datastore.DataStoreStatus) {
 	r.storeState.RLock()
 	defer r.storeState.RUnlock()
 
 	if _, ok := r.storeState.Databases[databaseId]; !ok {
-		return repositorymodels.Collection{}, repositorymodels.StatusNotFound
+		return datastore.Collection{}, datastore.StatusNotFound
 	}
 
 	if _, ok := r.storeState.Collections[databaseId][collectionId]; !ok {
-		return repositorymodels.Collection{}, repositorymodels.StatusNotFound
+		return datastore.Collection{}, datastore.StatusNotFound
 	}
 
-	return r.storeState.Collections[databaseId][collectionId], repositorymodels.StatusOk
+	return r.storeState.Collections[databaseId][collectionId], datastore.StatusOk
 }
 
-func (r *DataRepository) DeleteCollection(databaseId string, collectionId string) repositorymodels.RepositoryStatus {
+func (r *JsonDataStore) DeleteCollection(databaseId string, collectionId string) datastore.DataStoreStatus {
 	r.storeState.Lock()
 	defer r.storeState.Unlock()
 
 	if _, ok := r.storeState.Databases[databaseId]; !ok {
-		return repositorymodels.StatusNotFound
+		return datastore.StatusNotFound
 	}
 
 	if _, ok := r.storeState.Collections[databaseId][collectionId]; !ok {
-		return repositorymodels.StatusNotFound
+		return datastore.StatusNotFound
 	}
 
 	delete(r.storeState.Collections[databaseId], collectionId)
@@ -55,24 +55,24 @@ func (r *DataRepository) DeleteCollection(databaseId string, collectionId string
 	delete(r.storeState.StoredProcedures[databaseId], collectionId)
 	delete(r.storeState.UserDefinedFunctions[databaseId], collectionId)
 
-	return repositorymodels.StatusOk
+	return datastore.StatusOk
 }
 
-func (r *DataRepository) CreateCollection(databaseId string, newCollection repositorymodels.Collection) (repositorymodels.Collection, repositorymodels.RepositoryStatus) {
+func (r *JsonDataStore) CreateCollection(databaseId string, newCollection datastore.Collection) (datastore.Collection, datastore.DataStoreStatus) {
 	r.storeState.Lock()
 	defer r.storeState.Unlock()
 
 	var ok bool
-	var database repositorymodels.Database
+	var database datastore.Database
 	if database, ok = r.storeState.Databases[databaseId]; !ok {
-		return repositorymodels.Collection{}, repositorymodels.StatusNotFound
+		return datastore.Collection{}, datastore.StatusNotFound
 	}
 
 	if _, ok = r.storeState.Collections[databaseId][newCollection.ID]; ok {
-		return repositorymodels.Collection{}, repositorymodels.Conflict
+		return datastore.Collection{}, datastore.Conflict
 	}
 
-	newCollection = structhidrators.Hidrate(newCollection).(repositorymodels.Collection)
+	newCollection = structhidrators.Hidrate(newCollection).(datastore.Collection)
 
 	newCollection.TimeStamp = time.Now().Unix()
 	newCollection.ResourceID = resourceid.NewCombined(database.ResourceID, resourceid.New(resourceid.ResourceTypeCollection))
@@ -80,10 +80,10 @@ func (r *DataRepository) CreateCollection(databaseId string, newCollection repos
 	newCollection.Self = fmt.Sprintf("dbs/%s/colls/%s/", database.ResourceID, newCollection.ResourceID)
 
 	r.storeState.Collections[databaseId][newCollection.ID] = newCollection
-	r.storeState.Documents[databaseId][newCollection.ID] = make(map[string]repositorymodels.Document)
-	r.storeState.Triggers[databaseId][newCollection.ID] = make(map[string]repositorymodels.Trigger)
-	r.storeState.StoredProcedures[databaseId][newCollection.ID] = make(map[string]repositorymodels.StoredProcedure)
-	r.storeState.UserDefinedFunctions[databaseId][newCollection.ID] = make(map[string]repositorymodels.UserDefinedFunction)
+	r.storeState.Documents[databaseId][newCollection.ID] = make(map[string]datastore.Document)
+	r.storeState.Triggers[databaseId][newCollection.ID] = make(map[string]datastore.Trigger)
+	r.storeState.StoredProcedures[databaseId][newCollection.ID] = make(map[string]datastore.StoredProcedure)
+	r.storeState.UserDefinedFunctions[databaseId][newCollection.ID] = make(map[string]datastore.UserDefinedFunction)
 
-	return newCollection, repositorymodels.StatusOk
+	return newCollection, datastore.StatusOk
 }

internal/datastore/json_datastore/databases.go

@@ -1,39 +1,39 @@
-package repositories
+package jsondatastore
 
 import (
 	"fmt"
 	"time"
 
 	"github.com/google/uuid"
-	repositorymodels "github.com/pikami/cosmium/internal/repository_models"
+	"github.com/pikami/cosmium/internal/datastore"
 	"github.com/pikami/cosmium/internal/resourceid"
 	"golang.org/x/exp/maps"
 )
 
-func (r *DataRepository) GetAllDatabases() ([]repositorymodels.Database, repositorymodels.RepositoryStatus) {
+func (r *JsonDataStore) GetAllDatabases() ([]datastore.Database, datastore.DataStoreStatus) {
 	r.storeState.RLock()
 	defer r.storeState.RUnlock()
 
-	return maps.Values(r.storeState.Databases), repositorymodels.StatusOk
+	return maps.Values(r.storeState.Databases), datastore.StatusOk
 }
 
-func (r *DataRepository) GetDatabase(id string) (repositorymodels.Database, repositorymodels.RepositoryStatus) {
+func (r *JsonDataStore) GetDatabase(id string) (datastore.Database, datastore.DataStoreStatus) {
 	r.storeState.RLock()
 	defer r.storeState.RUnlock()
 
 	if database, ok := r.storeState.Databases[id]; ok {
-		return database, repositorymodels.StatusOk
+		return database, datastore.StatusOk
 	}
 
-	return repositorymodels.Database{}, repositorymodels.StatusNotFound
+	return datastore.Database{}, datastore.StatusNotFound
 }
 
-func (r *DataRepository) DeleteDatabase(id string) repositorymodels.RepositoryStatus {
+func (r *JsonDataStore) DeleteDatabase(id string) datastore.DataStoreStatus {
 	r.storeState.Lock()
 	defer r.storeState.Unlock()
 
 	if _, ok := r.storeState.Databases[id]; !ok {
-		return repositorymodels.StatusNotFound
+		return datastore.StatusNotFound
 	}
 
 	delete(r.storeState.Databases, id)
@@ -43,15 +43,15 @@ func (r *DataRepository) DeleteDatabase(id string) repositorymodels.RepositorySt
 	delete(r.storeState.StoredProcedures, id)
 	delete(r.storeState.UserDefinedFunctions, id)
 
-	return repositorymodels.StatusOk
+	return datastore.StatusOk
 }
 
-func (r *DataRepository) CreateDatabase(newDatabase repositorymodels.Database) (repositorymodels.Database, repositorymodels.RepositoryStatus) {
+func (r *JsonDataStore) CreateDatabase(newDatabase datastore.Database) (datastore.Database, datastore.DataStoreStatus) {
 	r.storeState.Lock()
 	defer r.storeState.Unlock()
 
 	if _, ok := r.storeState.Databases[newDatabase.ID]; ok {
-		return repositorymodels.Database{}, repositorymodels.Conflict
+		return datastore.Database{}, datastore.Conflict
 	}
 
 	newDatabase.TimeStamp = time.Now().Unix()
@@ -60,11 +60,11 @@ func (r *DataRepository) CreateDatabase(newDatabase repositorymodels.Database) (
 	newDatabase.Self = fmt.Sprintf("dbs/%s/", newDatabase.ResourceID)
 
 	r.storeState.Databases[newDatabase.ID] = newDatabase
-	r.storeState.Collections[newDatabase.ID] = make(map[string]repositorymodels.Collection)
-	r.storeState.Documents[newDatabase.ID] = make(map[string]map[string]repositorymodels.Document)
-	r.storeState.Triggers[newDatabase.ID] = make(map[string]map[string]repositorymodels.Trigger)
-	r.storeState.StoredProcedures[newDatabase.ID] = make(map[string]map[string]repositorymodels.StoredProcedure)
-	r.storeState.UserDefinedFunctions[newDatabase.ID] = make(map[string]map[string]repositorymodels.UserDefinedFunction)
+	r.storeState.Collections[newDatabase.ID] = make(map[string]datastore.Collection)
+	r.storeState.Documents[newDatabase.ID] = make(map[string]map[string]datastore.Document)
+	r.storeState.Triggers[newDatabase.ID] = make(map[string]map[string]datastore.Trigger)
+	r.storeState.StoredProcedures[newDatabase.ID] = make(map[string]map[string]datastore.StoredProcedure)
+	r.storeState.UserDefinedFunctions[newDatabase.ID] = make(map[string]map[string]datastore.UserDefinedFunction)
 
-	return newDatabase, repositorymodels.StatusOk
+	return newDatabase, datastore.StatusOk
 }

internal/datastore/json_datastore/documents.go

@@ -0,0 +1,113 @@
+package jsondatastore
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/google/uuid"
+	"github.com/pikami/cosmium/internal/datastore"
+	"github.com/pikami/cosmium/internal/resourceid"
+	"golang.org/x/exp/maps"
+)
+
+func (r *JsonDataStore) GetAllDocuments(databaseId string, collectionId string) ([]datastore.Document, datastore.DataStoreStatus) {
+	r.storeState.RLock()
+	defer r.storeState.RUnlock()
+
+	if _, ok := r.storeState.Databases[databaseId]; !ok {
+		return make([]datastore.Document, 0), datastore.StatusNotFound
+	}
+
+	if _, ok := r.storeState.Collections[databaseId][collectionId]; !ok {
+		return make([]datastore.Document, 0), datastore.StatusNotFound
+	}
+
+	return maps.Values(r.storeState.Documents[databaseId][collectionId]), datastore.StatusOk
+}
+
+func (r *JsonDataStore) GetDocument(databaseId string, collectionId string, documentId string) (datastore.Document, datastore.DataStoreStatus) {
+	r.storeState.RLock()
+	defer r.storeState.RUnlock()
+
+	if _, ok := r.storeState.Databases[databaseId]; !ok {
+		return datastore.Document{}, datastore.StatusNotFound
+	}
+
+	if _, ok := r.storeState.Collections[databaseId][collectionId]; !ok {
+		return datastore.Document{}, datastore.StatusNotFound
+	}
+
+	if _, ok := r.storeState.Documents[databaseId][collectionId][documentId]; !ok {
+		return datastore.Document{}, datastore.StatusNotFound
+	}
+
+	return r.storeState.Documents[databaseId][collectionId][documentId], datastore.StatusOk
+}
+
+func (r *JsonDataStore) DeleteDocument(databaseId string, collectionId string, documentId string) datastore.DataStoreStatus {
+	r.storeState.Lock()
+	defer r.storeState.Unlock()
+
+	if _, ok := r.storeState.Databases[databaseId]; !ok {
+		return datastore.StatusNotFound
+	}
+
+	if _, ok := r.storeState.Collections[databaseId][collectionId]; !ok {
+		return datastore.StatusNotFound
+	}
+
+	if _, ok := r.storeState.Documents[databaseId][collectionId][documentId]; !ok {
+		return datastore.StatusNotFound
+	}
+
+	delete(r.storeState.Documents[databaseId][collectionId], documentId)
+
+	return datastore.StatusOk
+}
+
+func (r *JsonDataStore) CreateDocument(databaseId string, collectionId string, document map[string]interface{}) (datastore.Document, datastore.DataStoreStatus) {
+	r.storeState.Lock()
+	defer r.storeState.Unlock()
+
+	var ok bool
+	var documentId string
+	var database datastore.Database
+	var collection datastore.Collection
+	if documentId, ok = document["id"].(string); !ok || documentId == "" {
+		documentId = fmt.Sprint(uuid.New())
+		document["id"] = documentId
+	}
+
+	if database, ok = r.storeState.Databases[databaseId]; !ok {
+		return datastore.Document{}, datastore.StatusNotFound
+	}
+
+	if collection, ok = r.storeState.Collections[databaseId][collectionId]; !ok {
+		return datastore.Document{}, datastore.StatusNotFound
+	}
+
+	if _, ok := r.storeState.Documents[databaseId][collectionId][documentId]; ok {
+		return datastore.Document{}, datastore.Conflict
+	}
+
+	document["_ts"] = time.Now().Unix()
+	document["_rid"] = resourceid.NewCombined(collection.ResourceID, resourceid.New(resourceid.ResourceTypeDocument))
+	document["_etag"] = fmt.Sprintf("\"%s\"", uuid.New())
+	document["_self"] = fmt.Sprintf("dbs/%s/colls/%s/docs/%s/", database.ResourceID, collection.ResourceID, document["_rid"])
+
+	r.storeState.Documents[databaseId][collectionId][documentId] = document
+
+	return document, datastore.StatusOk
+}
+
+func (r *JsonDataStore) GetDocumentIterator(databaseId string, collectionId string) (datastore.DocumentIterator, datastore.DataStoreStatus) {
+	documents, status := r.GetAllDocuments(databaseId, collectionId)
+	if status != datastore.StatusOk {
+		return nil, status
+	}
+
+	return &ArrayDocumentIterator{
+		documents: documents,
+		index:     -1,
+	}, datastore.StatusOk
+}

internal/datastore/json_datastore/map_datastore.go

@@ -0,0 +1,34 @@
+package jsondatastore
+
+import "github.com/pikami/cosmium/internal/datastore"
+
+type JsonDataStore struct {
+	storeState State
+
+	initialDataFilePath string
+	persistDataFilePath string
+}
+
+type JsonDataStoreOptions struct {
+	InitialDataFilePath string
+	PersistDataFilePath string
+}
+
+func NewJsonDataStore(options JsonDataStoreOptions) *JsonDataStore {
+	dataStore := &JsonDataStore{
+		storeState: State{
+			Databases:            make(map[string]datastore.Database),
+			Collections:          make(map[string]map[string]datastore.Collection),
+			Documents:            make(map[string]map[string]map[string]datastore.Document),
+			Triggers:             make(map[string]map[string]map[string]datastore.Trigger),
+			StoredProcedures:     make(map[string]map[string]map[string]datastore.StoredProcedure),
+			UserDefinedFunctions: make(map[string]map[string]map[string]datastore.UserDefinedFunction),
+		},
+		initialDataFilePath: options.InitialDataFilePath,
+		persistDataFilePath: options.PersistDataFilePath,
+	}
+
+	dataStore.InitializeDataStore()
+
+	return dataStore
+}

internal/datastore/json_datastore/partition_key_ranges.go

@@ -1,15 +1,15 @@
-package repositories
+package jsondatastore
 
 import (
 	"fmt"
 
 	"github.com/google/uuid"
-	repositorymodels "github.com/pikami/cosmium/internal/repository_models"
+	"github.com/pikami/cosmium/internal/datastore"
 	"github.com/pikami/cosmium/internal/resourceid"
 )
 
 // I have no idea what this is tbh
-func (r *DataRepository) GetPartitionKeyRanges(databaseId string, collectionId string) ([]repositorymodels.PartitionKeyRange, repositorymodels.RepositoryStatus) {
+func (r *JsonDataStore) GetPartitionKeyRanges(databaseId string, collectionId string) ([]datastore.PartitionKeyRange, datastore.DataStoreStatus) {
 	r.storeState.RLock()
 	defer r.storeState.RUnlock()
 
@@ -30,7 +30,7 @@ func (r *DataRepository) GetPartitionKeyRanges(databaseId string, collectionId s
 	pkrSelf := fmt.Sprintf("dbs/%s/colls/%s/pkranges/%s/", databaseRid, collectionRid, pkrResourceId)
 	etag := fmt.Sprintf("\"%s\"", uuid.New())
 
-	return []repositorymodels.PartitionKeyRange{
+	return []datastore.PartitionKeyRange{
 		{
 			ResourceID:         pkrResourceId,
 			ID:                 "0",
@@ -45,5 +45,5 @@ func (r *DataRepository) GetPartitionKeyRanges(databaseId string, collectionId s
 			TimeStamp:          timestamp,
 			Lsn:                17,
 		},
-	}, repositorymodels.StatusOk
+	}, datastore.StatusOk
 }

internal/datastore/json_datastore/state.go

@@ -1,16 +1,39 @@
-package repositories
+package jsondatastore
 
 import (
 	"encoding/json"
 	"log"
 	"os"
 	"reflect"
+	"sync"
 
+	"github.com/pikami/cosmium/internal/datastore"
 	"github.com/pikami/cosmium/internal/logger"
-	repositorymodels "github.com/pikami/cosmium/internal/repository_models"
 )
 
-func (r *DataRepository) InitializeRepository() {
+type State struct {
+	sync.RWMutex
+
+	// Map databaseId -> Database
+	Databases map[string]datastore.Database `json:"databases"`
+
+	// Map databaseId -> collectionId -> Collection
+	Collections map[string]map[string]datastore.Collection `json:"collections"`
+
+	// Map databaseId -> collectionId -> documentId -> Documents
+	Documents map[string]map[string]map[string]datastore.Document `json:"documents"`
+
+	// Map databaseId -> collectionId -> triggerId -> Trigger
+	Triggers map[string]map[string]map[string]datastore.Trigger `json:"triggers"`
+
+	// Map databaseId -> collectionId -> spId -> StoredProcedure
+	StoredProcedures map[string]map[string]map[string]datastore.StoredProcedure `json:"sprocs"`
+
+	// Map databaseId -> collectionId -> udfId -> UserDefinedFunction
+	UserDefinedFunctions map[string]map[string]map[string]datastore.UserDefinedFunction `json:"udfs"`
+}
+
+func (r *JsonDataStore) InitializeDataStore() {
 	if r.initialDataFilePath != "" {
 		r.LoadStateFS(r.initialDataFilePath)
 		return
@@ -32,7 +55,7 @@ func (r *DataRepository) InitializeRepository() {
 	}
 }
 
-func (r *DataRepository) LoadStateFS(filePath string) {
+func (r *JsonDataStore) LoadStateFS(filePath string) {
 	data, err := os.ReadFile(filePath)
 	if err != nil {
 		log.Fatalf("Error reading state JSON file: %v", err)
@@ -45,11 +68,11 @@ func (r *DataRepository) LoadStateFS(filePath string) {
 	}
 }
 
-func (r *DataRepository) LoadStateJSON(jsonData string) error {
+func (r *JsonDataStore) LoadStateJSON(jsonData string) error {
 	r.storeState.Lock()
 	defer r.storeState.Unlock()
 
-	var state repositorymodels.State
+	var state State
 	if err := json.Unmarshal([]byte(jsonData), &state); err != nil {
 		return err
 	}
@@ -71,7 +94,7 @@ func (r *DataRepository) LoadStateJSON(jsonData string) error {
 	return nil
 }
 
-func (r *DataRepository) SaveStateFS(filePath string) {
+func (r *JsonDataStore) SaveStateFS(filePath string) {
 	r.storeState.RLock()
 	defer r.storeState.RUnlock()
 
@@ -92,7 +115,7 @@ func (r *DataRepository) SaveStateFS(filePath string) {
 	logger.Infof("User defined functions: %d\n", getLength(r.storeState.UserDefinedFunctions))
 }
 
-func (r *DataRepository) GetState() (string, error) {
+func (r *JsonDataStore) DumpToJson() (string, error) {
 	r.storeState.RLock()
 	defer r.storeState.RUnlock()
 
@@ -103,16 +126,23 @@ func (r *DataRepository) GetState() (string, error) {
 	}
 
 	return string(data), nil
+
+}
+
+func (r *JsonDataStore) Close() {
+	if r.persistDataFilePath != "" {
+		r.SaveStateFS(r.persistDataFilePath)
+	}
 }
 
 func getLength(v interface{}) int {
 	switch v.(type) {
-	case repositorymodels.Database,
-		repositorymodels.Collection,
-		repositorymodels.Document,
-		repositorymodels.Trigger,
-		repositorymodels.StoredProcedure,
-		repositorymodels.UserDefinedFunction:
+	case datastore.Database,
+		datastore.Collection,
+		datastore.Document,
+		datastore.Trigger,
+		datastore.StoredProcedure,
+		datastore.UserDefinedFunction:
 		return 1
 	}
 
@@ -133,55 +163,55 @@ func getLength(v interface{}) int {
 	return count
 }
 
-func (r *DataRepository) ensureStoreStateNoNullReferences() {
+func (r *JsonDataStore) ensureStoreStateNoNullReferences() {
 	if r.storeState.Databases == nil {
-		r.storeState.Databases = make(map[string]repositorymodels.Database)
+		r.storeState.Databases = make(map[string]datastore.Database)
 	}
 
 	if r.storeState.Collections == nil {
-		r.storeState.Collections = make(map[string]map[string]repositorymodels.Collection)
+		r.storeState.Collections = make(map[string]map[string]datastore.Collection)
 	}
 
 	if r.storeState.Documents == nil {
-		r.storeState.Documents = make(map[string]map[string]map[string]repositorymodels.Document)
+		r.storeState.Documents = make(map[string]map[string]map[string]datastore.Document)
 	}
 
 	if r.storeState.Triggers == nil {
-		r.storeState.Triggers = make(map[string]map[string]map[string]repositorymodels.Trigger)
+		r.storeState.Triggers = make(map[string]map[string]map[string]datastore.Trigger)
 	}
 
 	if r.storeState.StoredProcedures == nil {
-		r.storeState.StoredProcedures = make(map[string]map[string]map[string]repositorymodels.StoredProcedure)
+		r.storeState.StoredProcedures = make(map[string]map[string]map[string]datastore.StoredProcedure)
 	}
 
 	if r.storeState.UserDefinedFunctions == nil {
-		r.storeState.UserDefinedFunctions = make(map[string]map[string]map[string]repositorymodels.UserDefinedFunction)
+		r.storeState.UserDefinedFunctions = make(map[string]map[string]map[string]datastore.UserDefinedFunction)
 	}
 
 	for database := range r.storeState.Databases {
 		if r.storeState.Collections[database] == nil {
-			r.storeState.Collections[database] = make(map[string]repositorymodels.Collection)
+			r.storeState.Collections[database] = make(map[string]datastore.Collection)
 		}
 
 		if r.storeState.Documents[database] == nil {
-			r.storeState.Documents[database] = make(map[string]map[string]repositorymodels.Document)
+			r.storeState.Documents[database] = make(map[string]map[string]datastore.Document)
 		}
 
 		if r.storeState.Triggers[database] == nil {
-			r.storeState.Triggers[database] = make(map[string]map[string]repositorymodels.Trigger)
+			r.storeState.Triggers[database] = make(map[string]map[string]datastore.Trigger)
 		}
 
 		if r.storeState.StoredProcedures[database] == nil {
-			r.storeState.StoredProcedures[database] = make(map[string]map[string]repositorymodels.StoredProcedure)
+			r.storeState.StoredProcedures[database] = make(map[string]map[string]datastore.StoredProcedure)
 		}
 
 		if r.storeState.UserDefinedFunctions[database] == nil {
-			r.storeState.UserDefinedFunctions[database] = make(map[string]map[string]repositorymodels.UserDefinedFunction)
+			r.storeState.UserDefinedFunctions[database] = make(map[string]map[string]datastore.UserDefinedFunction)
 		}
 
 		for collection := range r.storeState.Collections[database] {
 			if r.storeState.Documents[database][collection] == nil {
-				r.storeState.Documents[database][collection] = make(map[string]repositorymodels.Document)
+				r.storeState.Documents[database][collection] = make(map[string]datastore.Document)
 			}
 
 			for document := range r.storeState.Documents[database][collection] {
@@ -191,15 +221,15 @@ func (r *DataRepository) ensureStoreStateNoNullReferences() {
 			}
 
 			if r.storeState.Triggers[database][collection] == nil {
-				r.storeState.Triggers[database][collection] = make(map[string]repositorymodels.Trigger)
+				r.storeState.Triggers[database][collection] = make(map[string]datastore.Trigger)
 			}
 
 			if r.storeState.StoredProcedures[database][collection] == nil {
-				r.storeState.StoredProcedures[database][collection] = make(map[string]repositorymodels.StoredProcedure)
+				r.storeState.StoredProcedures[database][collection] = make(map[string]datastore.StoredProcedure)
 			}
 
 			if r.storeState.UserDefinedFunctions[database][collection] == nil {
-				r.storeState.UserDefinedFunctions[database][collection] = make(map[string]repositorymodels.UserDefinedFunction)
+				r.storeState.UserDefinedFunctions[database][collection] = make(map[string]datastore.UserDefinedFunction)
 			}
 		}
 	}

internal/datastore/json_datastore/stored_procedures.go

@@ -0,0 +1,91 @@
+package jsondatastore
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/google/uuid"
+	"github.com/pikami/cosmium/internal/datastore"
+	"github.com/pikami/cosmium/internal/resourceid"
+	"golang.org/x/exp/maps"
+)
+
+func (r *JsonDataStore) GetAllStoredProcedures(databaseId string, collectionId string) ([]datastore.StoredProcedure, datastore.DataStoreStatus) {
+	r.storeState.RLock()
+	defer r.storeState.RUnlock()
+
+	return maps.Values(r.storeState.StoredProcedures[databaseId][collectionId]), datastore.StatusOk
+}
+
+func (r *JsonDataStore) GetStoredProcedure(databaseId string, collectionId string, spId string) (datastore.StoredProcedure, datastore.DataStoreStatus) {
+	r.storeState.RLock()
+	defer r.storeState.RUnlock()
+
+	if _, ok := r.storeState.Databases[databaseId]; !ok {
+		return datastore.StoredProcedure{}, datastore.StatusNotFound
+	}
+
+	if _, ok := r.storeState.Collections[databaseId][collectionId]; !ok {
+		return datastore.StoredProcedure{}, datastore.StatusNotFound
+	}
+
+	if sp, ok := r.storeState.StoredProcedures[databaseId][collectionId][spId]; ok {
+		return sp, datastore.StatusOk
+	}
+
+	return datastore.StoredProcedure{}, datastore.StatusNotFound
+}
+
+func (r *JsonDataStore) DeleteStoredProcedure(databaseId string, collectionId string, spId string) datastore.DataStoreStatus {
+	r.storeState.Lock()
+	defer r.storeState.Unlock()
+
+	if _, ok := r.storeState.Databases[databaseId]; !ok {
+		return datastore.StatusNotFound
+	}
+
+	if _, ok := r.storeState.Collections[databaseId][collectionId]; !ok {
+		return datastore.StatusNotFound
+	}
+
+	if _, ok := r.storeState.StoredProcedures[databaseId][collectionId][spId]; !ok {
+		return datastore.StatusNotFound
+	}
+
+	delete(r.storeState.StoredProcedures[databaseId][collectionId], spId)
+
+	return datastore.StatusOk
+}
+
+func (r *JsonDataStore) CreateStoredProcedure(databaseId string, collectionId string, sp datastore.StoredProcedure) (datastore.StoredProcedure, datastore.DataStoreStatus) {
+	r.storeState.Lock()
+	defer r.storeState.Unlock()
+
+	var ok bool
+	var database datastore.Database
+	var collection datastore.Collection
+	if sp.ID == "" {
+		return datastore.StoredProcedure{}, datastore.BadRequest
+	}
+
+	if database, ok = r.storeState.Databases[databaseId]; !ok {
+		return datastore.StoredProcedure{}, datastore.StatusNotFound
+	}
+
+	if collection, ok = r.storeState.Collections[databaseId][collectionId]; !ok {
+		return datastore.StoredProcedure{}, datastore.StatusNotFound
+	}
+
+	if _, ok = r.storeState.StoredProcedures[databaseId][collectionId][sp.ID]; ok {
+		return datastore.StoredProcedure{}, datastore.Conflict
+	}
+
+	sp.TimeStamp = time.Now().Unix()
+	sp.ResourceID = resourceid.NewCombined(collection.ResourceID, resourceid.New(resourceid.ResourceTypeStoredProcedure))
+	sp.ETag = fmt.Sprintf("\"%s\"", uuid.New())
+	sp.Self = fmt.Sprintf("dbs/%s/colls/%s/sprocs/%s/", database.ResourceID, collection.ResourceID, sp.ResourceID)
+
+	r.storeState.StoredProcedures[databaseId][collectionId][sp.ID] = sp
+
+	return sp, datastore.StatusOk
+}

internal/datastore/json_datastore/triggers.go

@@ -1,83 +1,83 @@
-package repositories
+package jsondatastore
 
 import (
 	"fmt"
 	"time"
 
 	"github.com/google/uuid"
-	repositorymodels "github.com/pikami/cosmium/internal/repository_models"
+	"github.com/pikami/cosmium/internal/datastore"
 	"github.com/pikami/cosmium/internal/resourceid"
 	"golang.org/x/exp/maps"
 )
 
-func (r *DataRepository) GetAllTriggers(databaseId string, collectionId string) ([]repositorymodels.Trigger, repositorymodels.RepositoryStatus) {
+func (r *JsonDataStore) GetAllTriggers(databaseId string, collectionId string) ([]datastore.Trigger, datastore.DataStoreStatus) {
 	r.storeState.RLock()
 	defer r.storeState.RUnlock()
 
-	return maps.Values(r.storeState.Triggers[databaseId][collectionId]), repositorymodels.StatusOk
+	return maps.Values(r.storeState.Triggers[databaseId][collectionId]), datastore.StatusOk
 }
 
-func (r *DataRepository) GetTrigger(databaseId string, collectionId string, triggerId string) (repositorymodels.Trigger, repositorymodels.RepositoryStatus) {
+func (r *JsonDataStore) GetTrigger(databaseId string, collectionId string, triggerId string) (datastore.Trigger, datastore.DataStoreStatus) {
 	r.storeState.RLock()
 	defer r.storeState.RUnlock()
 
 	if _, ok := r.storeState.Databases[databaseId]; !ok {
-		return repositorymodels.Trigger{}, repositorymodels.StatusNotFound
+		return datastore.Trigger{}, datastore.StatusNotFound
 	}
 
 	if _, ok := r.storeState.Collections[databaseId][collectionId]; !ok {
-		return repositorymodels.Trigger{}, repositorymodels.StatusNotFound
+		return datastore.Trigger{}, datastore.StatusNotFound
 	}
 
 	if trigger, ok := r.storeState.Triggers[databaseId][collectionId][triggerId]; ok {
-		return trigger, repositorymodels.StatusOk
+		return trigger, datastore.StatusOk
 	}
 
-	return repositorymodels.Trigger{}, repositorymodels.StatusNotFound
+	return datastore.Trigger{}, datastore.StatusNotFound
 }
 
-func (r *DataRepository) DeleteTrigger(databaseId string, collectionId string, triggerId string) repositorymodels.RepositoryStatus {
+func (r *JsonDataStore) DeleteTrigger(databaseId string, collectionId string, triggerId string) datastore.DataStoreStatus {
 	r.storeState.Lock()
 	defer r.storeState.Unlock()
 
 	if _, ok := r.storeState.Databases[databaseId]; !ok {
-		return repositorymodels.StatusNotFound
+		return datastore.StatusNotFound
 	}
 
 	if _, ok := r.storeState.Collections[databaseId][collectionId]; !ok {
-		return repositorymodels.StatusNotFound
+		return datastore.StatusNotFound
 	}
 
 	if _, ok := r.storeState.Triggers[databaseId][collectionId][triggerId]; !ok {
-		return repositorymodels.StatusNotFound
+		return datastore.StatusNotFound
 	}
 
 	delete(r.storeState.Triggers[databaseId][collectionId], triggerId)
 
-	return repositorymodels.StatusOk
+	return datastore.StatusOk
 }
 
-func (r *DataRepository) CreateTrigger(databaseId string, collectionId string, trigger repositorymodels.Trigger) (repositorymodels.Trigger, repositorymodels.RepositoryStatus) {
+func (r *JsonDataStore) CreateTrigger(databaseId string, collectionId string, trigger datastore.Trigger) (datastore.Trigger, datastore.DataStoreStatus) {
 	r.storeState.Lock()
 	defer r.storeState.Unlock()
 
 	var ok bool
-	var database repositorymodels.Database
-	var collection repositorymodels.Collection
+	var database datastore.Database
+	var collection datastore.Collection
 	if trigger.ID == "" {
-		return repositorymodels.Trigger{}, repositorymodels.BadRequest
+		return datastore.Trigger{}, datastore.BadRequest
 	}
 
 	if database, ok = r.storeState.Databases[databaseId]; !ok {
-		return repositorymodels.Trigger{}, repositorymodels.StatusNotFound
+		return datastore.Trigger{}, datastore.StatusNotFound
 	}
 
 	if collection, ok = r.storeState.Collections[databaseId][collectionId]; !ok {
-		return repositorymodels.Trigger{}, repositorymodels.StatusNotFound
+		return datastore.Trigger{}, datastore.StatusNotFound
 	}
 
 	if _, ok = r.storeState.Triggers[databaseId][collectionId][trigger.ID]; ok {
-		return repositorymodels.Trigger{}, repositorymodels.Conflict
+		return datastore.Trigger{}, datastore.Conflict
 	}
 
 	trigger.TimeStamp = time.Now().Unix()
@@ -87,5 +87,5 @@ func (r *DataRepository) CreateTrigger(databaseId string, collectionId string, t
 
 	r.storeState.Triggers[databaseId][collectionId][trigger.ID] = trigger
 
-	return trigger, repositorymodels.StatusOk
+	return trigger, datastore.StatusOk
 }

internal/datastore/json_datastore/user_defined_functions.go

@@ -0,0 +1,91 @@
+package jsondatastore
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/google/uuid"
+	"github.com/pikami/cosmium/internal/datastore"
+	"github.com/pikami/cosmium/internal/resourceid"
+	"golang.org/x/exp/maps"
+)
+
+func (r *JsonDataStore) GetAllUserDefinedFunctions(databaseId string, collectionId string) ([]datastore.UserDefinedFunction, datastore.DataStoreStatus) {
+	r.storeState.RLock()
+	defer r.storeState.RUnlock()
+
+	return maps.Values(r.storeState.UserDefinedFunctions[databaseId][collectionId]), datastore.StatusOk
+}
+
+func (r *JsonDataStore) GetUserDefinedFunction(databaseId string, collectionId string, udfId string) (datastore.UserDefinedFunction, datastore.DataStoreStatus) {
+	r.storeState.RLock()
+	defer r.storeState.RUnlock()
+
+	if _, ok := r.storeState.Databases[databaseId]; !ok {
+		return datastore.UserDefinedFunction{}, datastore.StatusNotFound
+	}
+
+	if _, ok := r.storeState.Collections[databaseId][collectionId]; !ok {
+		return datastore.UserDefinedFunction{}, datastore.StatusNotFound
+	}
+
+	if udf, ok := r.storeState.UserDefinedFunctions[databaseId][collectionId][udfId]; ok {
+		return udf, datastore.StatusOk
+	}
+
+	return datastore.UserDefinedFunction{}, datastore.StatusNotFound
+}
+
+func (r *JsonDataStore) DeleteUserDefinedFunction(databaseId string, collectionId string, udfId string) datastore.DataStoreStatus {
+	r.storeState.Lock()
+	defer r.storeState.Unlock()
+
+	if _, ok := r.storeState.Databases[databaseId]; !ok {
+		return datastore.StatusNotFound
+	}
+
+	if _, ok := r.storeState.Collections[databaseId][collectionId]; !ok {
+		return datastore.StatusNotFound
+	}
+
+	if _, ok := r.storeState.UserDefinedFunctions[databaseId][collectionId][udfId]; !ok {
+		return datastore.StatusNotFound
+	}
+
+	delete(r.storeState.UserDefinedFunctions[databaseId][collectionId], udfId)
+
+	return datastore.StatusOk
+}
+
+func (r *JsonDataStore) CreateUserDefinedFunction(databaseId string, collectionId string, udf datastore.UserDefinedFunction) (datastore.UserDefinedFunction, datastore.DataStoreStatus) {
+	r.storeState.Lock()
+	defer r.storeState.Unlock()
+
+	var ok bool
+	var database datastore.Database
+	var collection datastore.Collection
+	if udf.ID == "" {
+		return datastore.UserDefinedFunction{}, datastore.BadRequest
+	}
+
+	if database, ok = r.storeState.Databases[databaseId]; !ok {
+		return datastore.UserDefinedFunction{}, datastore.StatusNotFound
+	}
+
+	if collection, ok = r.storeState.Collections[databaseId][collectionId]; !ok {
+		return datastore.UserDefinedFunction{}, datastore.StatusNotFound
+	}
+
+	if _, ok := r.storeState.UserDefinedFunctions[databaseId][collectionId][udf.ID]; ok {
+		return datastore.UserDefinedFunction{}, datastore.Conflict
+	}
+
+	udf.TimeStamp = time.Now().Unix()
+	udf.ResourceID = resourceid.NewCombined(collection.ResourceID, resourceid.New(resourceid.ResourceTypeUserDefinedFunction))
+	udf.ETag = fmt.Sprintf("\"%s\"", uuid.New())
+	udf.Self = fmt.Sprintf("dbs/%s/colls/%s/udfs/%s/", database.ResourceID, collection.ResourceID, udf.ResourceID)
+
+	r.storeState.UserDefinedFunctions[databaseId][collectionId][udf.ID] = udf
+
+	return udf, datastore.StatusOk
+}

internal/datastore/models.go

@@ -1,6 +1,4 @@
-package repositorymodels
-
-import "sync"
+package datastore
 
 type Database struct {
 	ID         string `json:"id"`
@@ -10,13 +8,15 @@ type Database struct {
 	Self       string `json:"_self"`
 }
 
-type RepositoryStatus int
+type DataStoreStatus int
 
 const (
-	StatusOk       = 1
-	StatusNotFound = 2
-	Conflict       = 3
-	BadRequest     = 4
+	StatusOk       DataStoreStatus = 1
+	StatusNotFound DataStoreStatus = 2
+	Conflict       DataStoreStatus = 3
+	BadRequest     DataStoreStatus = 4
+	IterEOF        DataStoreStatus = 5
+	Unknown        DataStoreStatus = 6
 )
 
 type TriggerOperation string
@@ -117,25 +117,3 @@ type PartitionKeyRange struct {
 	TimeStamp          int64  `json:"_ts"`
 	Lsn                int    `json:"lsn"`
 }
-
-type State struct {
-	sync.RWMutex
-
-	// Map databaseId -> Database
-	Databases map[string]Database `json:"databases"`
-
-	// Map databaseId -> collectionId -> Collection
-	Collections map[string]map[string]Collection `json:"collections"`
-
-	// Map databaseId -> collectionId -> documentId -> Documents
-	Documents map[string]map[string]map[string]Document `json:"documents"`
-
-	// Map databaseId -> collectionId -> triggerId -> Trigger
-	Triggers map[string]map[string]map[string]Trigger `json:"triggers"`
-
-	// Map databaseId -> collectionId -> spId -> StoredProcedure
-	StoredProcedures map[string]map[string]map[string]StoredProcedure `json:"sprocs"`
-
-	// Map databaseId -> collectionId -> udfId -> UserDefinedFunction
-	UserDefinedFunctions map[string]map[string]map[string]UserDefinedFunction `json:"udfs"`
-}

internal/repositories/documents.go

@@ -1,130 +0,0 @@
-package repositories
-
-import (
-	"fmt"
-	"log"
-	"time"
-
-	"github.com/google/uuid"
-	repositorymodels "github.com/pikami/cosmium/internal/repository_models"
-	"github.com/pikami/cosmium/internal/resourceid"
-	"github.com/pikami/cosmium/parsers"
-	"github.com/pikami/cosmium/parsers/nosql"
-	memoryexecutor "github.com/pikami/cosmium/query_executors/memory_executor"
-	"golang.org/x/exp/maps"
-)
-
-func (r *DataRepository) GetAllDocuments(databaseId string, collectionId string) ([]repositorymodels.Document, repositorymodels.RepositoryStatus) {
-	r.storeState.RLock()
-	defer r.storeState.RUnlock()
-
-	if _, ok := r.storeState.Databases[databaseId]; !ok {
-		return make([]repositorymodels.Document, 0), repositorymodels.StatusNotFound
-	}
-
-	if _, ok := r.storeState.Collections[databaseId][collectionId]; !ok {
-		return make([]repositorymodels.Document, 0), repositorymodels.StatusNotFound
-	}
-
-	return maps.Values(r.storeState.Documents[databaseId][collectionId]), repositorymodels.StatusOk
-}
-
-func (r *DataRepository) GetDocument(databaseId string, collectionId string, documentId string) (repositorymodels.Document, repositorymodels.RepositoryStatus) {
-	r.storeState.RLock()
-	defer r.storeState.RUnlock()
-
-	if _, ok := r.storeState.Databases[databaseId]; !ok {
-		return repositorymodels.Document{}, repositorymodels.StatusNotFound
-	}
-
-	if _, ok := r.storeState.Collections[databaseId][collectionId]; !ok {
-		return repositorymodels.Document{}, repositorymodels.StatusNotFound
-	}
-
-	if _, ok := r.storeState.Documents[databaseId][collectionId][documentId]; !ok {
-		return repositorymodels.Document{}, repositorymodels.StatusNotFound
-	}
-
-	return r.storeState.Documents[databaseId][collectionId][documentId], repositorymodels.StatusOk
-}
-
-func (r *DataRepository) DeleteDocument(databaseId string, collectionId string, documentId string) repositorymodels.RepositoryStatus {
-	r.storeState.Lock()
-	defer r.storeState.Unlock()
-
-	if _, ok := r.storeState.Databases[databaseId]; !ok {
-		return repositorymodels.StatusNotFound
-	}
-
-	if _, ok := r.storeState.Collections[databaseId][collectionId]; !ok {
-		return repositorymodels.StatusNotFound
-	}
-
-	if _, ok := r.storeState.Documents[databaseId][collectionId][documentId]; !ok {
-		return repositorymodels.StatusNotFound
-	}
-
-	delete(r.storeState.Documents[databaseId][collectionId], documentId)
-
-	return repositorymodels.StatusOk
-}
-
-func (r *DataRepository) CreateDocument(databaseId string, collectionId string, document map[string]interface{}) (repositorymodels.Document, repositorymodels.RepositoryStatus) {
-	r.storeState.Lock()
-	defer r.storeState.Unlock()
-
-	var ok bool
-	var documentId string
-	var database repositorymodels.Database
-	var collection repositorymodels.Collection
-	if documentId, ok = document["id"].(string); !ok || documentId == "" {
-		documentId = fmt.Sprint(uuid.New())
-		document["id"] = documentId
-	}
-
-	if database, ok = r.storeState.Databases[databaseId]; !ok {
-		return repositorymodels.Document{}, repositorymodels.StatusNotFound
-	}
-
-	if collection, ok = r.storeState.Collections[databaseId][collectionId]; !ok {
-		return repositorymodels.Document{}, repositorymodels.StatusNotFound
-	}
-
-	if _, ok := r.storeState.Documents[databaseId][collectionId][documentId]; ok {
-		return repositorymodels.Document{}, repositorymodels.Conflict
-	}
-
-	document["_ts"] = time.Now().Unix()
-	document["_rid"] = resourceid.NewCombined(collection.ResourceID, resourceid.New(resourceid.ResourceTypeDocument))
-	document["_etag"] = fmt.Sprintf("\"%s\"", uuid.New())
-	document["_self"] = fmt.Sprintf("dbs/%s/colls/%s/docs/%s/", database.ResourceID, collection.ResourceID, document["_rid"])
-
-	r.storeState.Documents[databaseId][collectionId][documentId] = document
-
-	return document, repositorymodels.StatusOk
-}
-
-func (r *DataRepository) ExecuteQueryDocuments(databaseId string, collectionId string, query string, queryParameters map[string]interface{}) ([]memoryexecutor.RowType, repositorymodels.RepositoryStatus) {
-	parsedQuery, err := nosql.Parse("", []byte(query))
-	if err != nil {
-		log.Printf("Failed to parse query: %s\nerr: %v", query, err)
-		return nil, repositorymodels.BadRequest
-	}
-
-	collectionDocuments, status := r.GetAllDocuments(databaseId, collectionId)
-	if status != repositorymodels.StatusOk {
-		return nil, status
-	}
-
-	covDocs := make([]memoryexecutor.RowType, 0)
-	for _, doc := range collectionDocuments {
-		covDocs = append(covDocs, map[string]interface{}(doc))
-	}
-
-	if typedQuery, ok := parsedQuery.(parsers.SelectStmt); ok {
-		typedQuery.Parameters = queryParameters
-		return memoryexecutor.ExecuteQuery(typedQuery, covDocs), repositorymodels.StatusOk
-	}
-
-	return nil, repositorymodels.BadRequest
-}

internal/repositories/repositories.go

@@ -1,34 +0,0 @@
-package repositories
-
-import repositorymodels "github.com/pikami/cosmium/internal/repository_models"
-
-type DataRepository struct {
-	storeState repositorymodels.State
-
-	initialDataFilePath string
-	persistDataFilePath string
-}
-
-type RepositoryOptions struct {
-	InitialDataFilePath string
-	PersistDataFilePath string
-}
-
-func NewDataRepository(options RepositoryOptions) *DataRepository {
-	repository := &DataRepository{
-		storeState: repositorymodels.State{
-			Databases:            make(map[string]repositorymodels.Database),
-			Collections:          make(map[string]map[string]repositorymodels.Collection),
-			Documents:            make(map[string]map[string]map[string]repositorymodels.Document),
-			Triggers:             make(map[string]map[string]map[string]repositorymodels.Trigger),
-			StoredProcedures:     make(map[string]map[string]map[string]repositorymodels.StoredProcedure),
-			UserDefinedFunctions: make(map[string]map[string]map[string]repositorymodels.UserDefinedFunction),
-		},
-		initialDataFilePath: options.InitialDataFilePath,
-		persistDataFilePath: options.PersistDataFilePath,
-	}
-
-	repository.InitializeRepository()
-
-	return repository
-}

internal/repositories/stored_procedures.go

@@ -1,91 +0,0 @@
-package repositories
-
-import (
-	"fmt"
-	"time"
-
-	"github.com/google/uuid"
-	repositorymodels "github.com/pikami/cosmium/internal/repository_models"
-	"github.com/pikami/cosmium/internal/resourceid"
-	"golang.org/x/exp/maps"
-)
-
-func (r *DataRepository) GetAllStoredProcedures(databaseId string, collectionId string) ([]repositorymodels.StoredProcedure, repositorymodels.RepositoryStatus) {
-	r.storeState.RLock()
-	defer r.storeState.RUnlock()
-
-	return maps.Values(r.storeState.StoredProcedures[databaseId][collectionId]), repositorymodels.StatusOk
-}
-
-func (r *DataRepository) GetStoredProcedure(databaseId string, collectionId string, spId string) (repositorymodels.StoredProcedure, repositorymodels.RepositoryStatus) {
-	r.storeState.RLock()
-	defer r.storeState.RUnlock()
-
-	if _, ok := r.storeState.Databases[databaseId]; !ok {
-		return repositorymodels.StoredProcedure{}, repositorymodels.StatusNotFound
-	}
-
-	if _, ok := r.storeState.Collections[databaseId][collectionId]; !ok {
-		return repositorymodels.StoredProcedure{}, repositorymodels.StatusNotFound
-	}
-
-	if sp, ok := r.storeState.StoredProcedures[databaseId][collectionId][spId]; ok {
-		return sp, repositorymodels.StatusOk
-	}
-
-	return repositorymodels.StoredProcedure{}, repositorymodels.StatusNotFound
-}
-
-func (r *DataRepository) DeleteStoredProcedure(databaseId string, collectionId string, spId string) repositorymodels.RepositoryStatus {
-	r.storeState.Lock()
-	defer r.storeState.Unlock()
-
-	if _, ok := r.storeState.Databases[databaseId]; !ok {
-		return repositorymodels.StatusNotFound
-	}
-
-	if _, ok := r.storeState.Collections[databaseId][collectionId]; !ok {
-		return repositorymodels.StatusNotFound
-	}
-
-	if _, ok := r.storeState.StoredProcedures[databaseId][collectionId][spId]; !ok {
-		return repositorymodels.StatusNotFound
-	}
-
-	delete(r.storeState.StoredProcedures[databaseId][collectionId], spId)
-
-	return repositorymodels.StatusOk
-}
-
-func (r *DataRepository) CreateStoredProcedure(databaseId string, collectionId string, sp repositorymodels.StoredProcedure) (repositorymodels.StoredProcedure, repositorymodels.RepositoryStatus) {
-	r.storeState.Lock()
-	defer r.storeState.Unlock()
-
-	var ok bool
-	var database repositorymodels.Database
-	var collection repositorymodels.Collection
-	if sp.ID == "" {
-		return repositorymodels.StoredProcedure{}, repositorymodels.BadRequest
-	}
-
-	if database, ok = r.storeState.Databases[databaseId]; !ok {
-		return repositorymodels.StoredProcedure{}, repositorymodels.StatusNotFound
-	}
-
-	if collection, ok = r.storeState.Collections[databaseId][collectionId]; !ok {
-		return repositorymodels.StoredProcedure{}, repositorymodels.StatusNotFound
-	}
-
-	if _, ok = r.storeState.StoredProcedures[databaseId][collectionId][sp.ID]; ok {
-		return repositorymodels.StoredProcedure{}, repositorymodels.Conflict
-	}
-
-	sp.TimeStamp = time.Now().Unix()
-	sp.ResourceID = resourceid.NewCombined(collection.ResourceID, resourceid.New(resourceid.ResourceTypeStoredProcedure))
-	sp.ETag = fmt.Sprintf("\"%s\"", uuid.New())
-	sp.Self = fmt.Sprintf("dbs/%s/colls/%s/sprocs/%s/", database.ResourceID, collection.ResourceID, sp.ResourceID)
-
-	r.storeState.StoredProcedures[databaseId][collectionId][sp.ID] = sp
-
-	return sp, repositorymodels.StatusOk
-}

internal/repositories/user_defined_functions.go

@@ -1,91 +0,0 @@
-package repositories
-
-import (
-	"fmt"
-	"time"
-
-	"github.com/google/uuid"
-	repositorymodels "github.com/pikami/cosmium/internal/repository_models"
-	"github.com/pikami/cosmium/internal/resourceid"
-	"golang.org/x/exp/maps"
-)
-
-func (r *DataRepository) GetAllUserDefinedFunctions(databaseId string, collectionId string) ([]repositorymodels.UserDefinedFunction, repositorymodels.RepositoryStatus) {
-	r.storeState.RLock()
-	defer r.storeState.RUnlock()
-
-	return maps.Values(r.storeState.UserDefinedFunctions[databaseId][collectionId]), repositorymodels.StatusOk
-}
-
-func (r *DataRepository) GetUserDefinedFunction(databaseId string, collectionId string, udfId string) (repositorymodels.UserDefinedFunction, repositorymodels.RepositoryStatus) {
-	r.storeState.RLock()
-	defer r.storeState.RUnlock()
-
-	if _, ok := r.storeState.Databases[databaseId]; !ok {
-		return repositorymodels.UserDefinedFunction{}, repositorymodels.StatusNotFound
-	}
-
-	if _, ok := r.storeState.Collections[databaseId][collectionId]; !ok {
-		return repositorymodels.UserDefinedFunction{}, repositorymodels.StatusNotFound
-	}
-
-	if udf, ok := r.storeState.UserDefinedFunctions[databaseId][collectionId][udfId]; ok {
-		return udf, repositorymodels.StatusOk
-	}
-
-	return repositorymodels.UserDefinedFunction{}, repositorymodels.StatusNotFound
-}
-
-func (r *DataRepository) DeleteUserDefinedFunction(databaseId string, collectionId string, udfId string) repositorymodels.RepositoryStatus {
-	r.storeState.Lock()
-	defer r.storeState.Unlock()
-
-	if _, ok := r.storeState.Databases[databaseId]; !ok {
-		return repositorymodels.StatusNotFound
-	}
-
-	if _, ok := r.storeState.Collections[databaseId][collectionId]; !ok {
-		return repositorymodels.StatusNotFound
-	}
-
-	if _, ok := r.storeState.UserDefinedFunctions[databaseId][collectionId][udfId]; !ok {
-		return repositorymodels.StatusNotFound
-	}
-
-	delete(r.storeState.UserDefinedFunctions[databaseId][collectionId], udfId)
-
-	return repositorymodels.StatusOk
-}
-
-func (r *DataRepository) CreateUserDefinedFunction(databaseId string, collectionId string, udf repositorymodels.UserDefinedFunction) (repositorymodels.UserDefinedFunction, repositorymodels.RepositoryStatus) {
-	r.storeState.Lock()
-	defer r.storeState.Unlock()
-
-	var ok bool
-	var database repositorymodels.Database
-	var collection repositorymodels.Collection
-	if udf.ID == "" {
-		return repositorymodels.UserDefinedFunction{}, repositorymodels.BadRequest
-	}
-
-	if database, ok = r.storeState.Databases[databaseId]; !ok {
-		return repositorymodels.UserDefinedFunction{}, repositorymodels.StatusNotFound
-	}
-
-	if collection, ok = r.storeState.Collections[databaseId][collectionId]; !ok {
-		return repositorymodels.UserDefinedFunction{}, repositorymodels.StatusNotFound
-	}
-
-	if _, ok := r.storeState.UserDefinedFunctions[databaseId][collectionId][udf.ID]; ok {
-		return repositorymodels.UserDefinedFunction{}, repositorymodels.Conflict
-	}
-
-	udf.TimeStamp = time.Now().Unix()
-	udf.ResourceID = resourceid.NewCombined(collection.ResourceID, resourceid.New(resourceid.ResourceTypeUserDefinedFunction))
-	udf.ETag = fmt.Sprintf("\"%s\"", uuid.New())
-	udf.Self = fmt.Sprintf("dbs/%s/colls/%s/udfs/%s/", database.ResourceID, collection.ResourceID, udf.ResourceID)
-
-	r.storeState.UserDefinedFunctions[databaseId][collectionId][udf.ID] = udf
-
-	return udf, repositorymodels.StatusOk
-}

internal/rntbd/builder.go

@@ -0,0 +1,138 @@
+package rntbd
+
+import (
+	"bytes"
+	"encoding/binary"
+)
+
+type RntbdResponseFrame struct {
+	StatusCode      uint16
+	ResourceType    RntbdResourceType
+	ActivityId      []byte
+	ResponseHeaders []RntbdResponseHeader
+	Payload         []byte
+}
+
+type RntbdResponseHeader struct {
+	HeaderId   uint16
+	TokenType  RntbdTokenType
+	TokenValue any
+}
+
+type RntbdResponseFrameBuilder struct {
+	frame RntbdResponseFrame
+}
+
+func (b *RntbdResponseFrameBuilder) AddHeader(headerId uint16, tokenType RntbdTokenType, tokenValue any) {
+	b.frame.ResponseHeaders = append(b.frame.ResponseHeaders, RntbdResponseHeader{
+		HeaderId:   headerId,
+		TokenType:  tokenType,
+		TokenValue: tokenValue,
+	})
+}
+
+func (b *RntbdResponseFrameBuilder) AddPayload(payload []byte) {
+	b.frame.Payload = payload
+}
+
+func (b *RntbdResponseFrameBuilder) SetStatusCode(statusCode uint16) {
+	b.frame.StatusCode = statusCode
+}
+
+func (b *RntbdResponseFrameBuilder) SetResourceType(resourceType RntbdResourceType) {
+	b.frame.ResourceType = resourceType
+}
+
+func (b *RntbdResponseFrameBuilder) SetActivityId(activityId []byte) {
+	b.frame.ActivityId = activityId
+}
+
+func (b *RntbdResponseFrameBuilder) Build() *RntbdResponseFrame {
+	return &b.frame
+}
+
+func (f *RntbdResponseFrame) ToBytes() []byte {
+	var buffer bytes.Buffer
+
+	binary.Write(&buffer, binary.LittleEndian, f.StatusCode)
+	binary.Write(&buffer, binary.LittleEndian, uint16(f.ResourceType))
+	binary.Write(&buffer, binary.LittleEndian, f.ActivityId)
+
+	for _, header := range f.ResponseHeaders {
+		binary.Write(&buffer, binary.LittleEndian, header.HeaderId)
+		binary.Write(&buffer, binary.LittleEndian, uint8(header.TokenType))
+
+		switch header.TokenType {
+		case RntbdTokenTypeByte:
+			buffer.Write(header.TokenValue.([]byte))
+		case RntbdTokenTypeUShort:
+			binary.Write(&buffer, binary.LittleEndian, header.TokenValue.(uint16))
+		case RntbdTokenTypeULong:
+			binary.Write(&buffer, binary.LittleEndian, header.TokenValue.(uint32))
+		case RntbdTokenTypeLong:
+			binary.Write(&buffer, binary.LittleEndian, header.TokenValue.(int32))
+		case RntbdTokenTypeULongLong:
+			binary.Write(&buffer, binary.LittleEndian, header.TokenValue.(uint64))
+		case RntbdTokenTypeLongLong:
+			binary.Write(&buffer, binary.LittleEndian, header.TokenValue.(int64))
+		case RntbdTokenTypeGuid:
+			buffer.Write(header.TokenValue.([]byte))
+
+		case RntbdTokenTypeSmallString:
+			binary.Write(&buffer, binary.LittleEndian, uint8(len(header.TokenValue.(string))))
+			buffer.WriteString(header.TokenValue.(string))
+		case RntbdTokenTypeString:
+			binary.Write(&buffer, binary.LittleEndian, uint16(len(header.TokenValue.(string))))
+			buffer.WriteString(header.TokenValue.(string))
+		case RntbdTokenTypeULongString:
+			binary.Write(&buffer, binary.LittleEndian, uint32(len(header.TokenValue.(string))))
+			buffer.WriteString(header.TokenValue.(string))
+		case RntbdTokenTypeSmallBytes:
+			binary.Write(&buffer, binary.LittleEndian, uint8(len(header.TokenValue.([]byte))))
+			buffer.Write(header.TokenValue.([]byte))
+		case RntbdTokenTypeBytes:
+			binary.Write(&buffer, binary.LittleEndian, uint16(len(header.TokenValue.([]byte))))
+			buffer.Write(header.TokenValue.([]byte))
+		case RntbdTokenTypeULongBytes:
+			binary.Write(&buffer, binary.LittleEndian, uint32(len(header.TokenValue.([]byte))))
+			buffer.Write(header.TokenValue.([]byte))
+		case RntbdTokenTypeFloat:
+			binary.Write(&buffer, binary.LittleEndian, header.TokenValue.(float32))
+		case RntbdTokenTypeDouble:
+			binary.Write(&buffer, binary.LittleEndian, header.TokenValue.(float64))
+		case RntbdTokenTypeInvalid:
+			panic("invalid token type")
+		default:
+			panic("invalid token type")
+		}
+	}
+
+	payloadSize := uint32(0)
+	if len(f.Payload) > 0 {
+		payloadSize = uint32(len(f.Payload)) + 4
+	}
+
+	frameSize := uint32(buffer.Len()) + 4
+	result := make([]byte, frameSize+payloadSize)
+	binary.LittleEndian.PutUint32(result, frameSize)
+	copy(result[4:], buffer.Bytes())
+
+	if len(f.Payload) > 0 {
+		binary.LittleEndian.PutUint32(result[frameSize:], payloadSize-4)
+		copy(result[frameSize+4:], f.Payload)
+	}
+
+	return result
+}
+
+func buildContextFrame(requestFrame *RntbdFrame) []byte {
+	builder := RntbdResponseFrameBuilder{}
+	builder.SetStatusCode(200)
+	builder.SetResourceType(RntbdResourceTypeConnection)
+	builder.SetActivityId(requestFrame.ActivityId)
+	builder.AddHeader(uint16(RntbdContextHeaderServerAgent), RntbdTokenTypeSmallString, "DocumentDB Server")
+	builder.AddHeader(uint16(RntbdContextHeaderServerVersion), RntbdTokenTypeSmallString, " version=2.14.0.0")
+	builder.AddHeader(uint16(RntbdContextHeaderIdleTimeoutInSeconds), RntbdTokenTypeULong, uint32(120))
+	builder.AddHeader(uint16(RntbdContextHeaderUnauthenticatedTimeoutInSeconds), RntbdTokenTypeULong, uint32(25))
+	return builder.Build().ToBytes()
+}

internal/rntbd/constants.go

@@ -0,0 +1,746 @@
+package rntbd
+
+import (
+	"fmt"
+
+	"github.com/pikami/cosmium/api/headers"
+)
+
+type RntbdOperationType uint16
+
+const (
+	RntbdOperationTypeConnection                       RntbdOperationType = 0x0000
+	RntbdOperationTypeCreate                           RntbdOperationType = 0x0001
+	RntbdOperationTypeUpdate                           RntbdOperationType = 0x0002
+	RntbdOperationTypeRead                             RntbdOperationType = 0x0003
+	RntbdOperationTypeReadFeed                         RntbdOperationType = 0x0004
+	RntbdOperationTypeDelete                           RntbdOperationType = 0x0005
+	RntbdOperationTypeReplace                          RntbdOperationType = 0x0006
+	RntbdOperationTypeExecuteJavaScript                RntbdOperationType = 0x0008
+	RntbdOperationTypeSQLQuery                         RntbdOperationType = 0x0009
+	RntbdOperationTypePause                            RntbdOperationType = 0x000A
+	RntbdOperationTypeResume                           RntbdOperationType = 0x000B
+	RntbdOperationTypeStop                             RntbdOperationType = 0x000C
+	RntbdOperationTypeRecycle                          RntbdOperationType = 0x000D
+	RntbdOperationTypeCrash                            RntbdOperationType = 0x000E
+	RntbdOperationTypeQuery                            RntbdOperationType = 0x000F
+	RntbdOperationTypeForceConfigRefresh               RntbdOperationType = 0x0010
+	RntbdOperationTypeHead                             RntbdOperationType = 0x0011
+	RntbdOperationTypeHeadFeed                         RntbdOperationType = 0x0012
+	RntbdOperationTypeUpsert                           RntbdOperationType = 0x0013
+	RntbdOperationTypeRecreate                         RntbdOperationType = 0x0014
+	RntbdOperationTypeThrottle                         RntbdOperationType = 0x0015
+	RntbdOperationTypeGetSplitPoint                    RntbdOperationType = 0x0016
+	RntbdOperationTypePreCreateValidation              RntbdOperationType = 0x0017
+	RntbdOperationTypeBatchApply                       RntbdOperationType = 0x0018
+	RntbdOperationTypeAbortSplit                       RntbdOperationType = 0x0019
+	RntbdOperationTypeCompleteSplit                    RntbdOperationType = 0x001A
+	RntbdOperationTypeOfferUpdateOperation             RntbdOperationType = 0x001B
+	RntbdOperationTypeOfferPreGrowValidation           RntbdOperationType = 0x001C
+	RntbdOperationTypeBatchReportThroughputUtilization RntbdOperationType = 0x001D
+	RntbdOperationTypeCompletePartitionMigration       RntbdOperationType = 0x001E
+	RntbdOperationTypeAbortPartitionMigration          RntbdOperationType = 0x001F
+	RntbdOperationTypePreReplaceValidation             RntbdOperationType = 0x0020
+	RntbdOperationTypeAddComputeGatewayRequestCharges  RntbdOperationType = 0x0021
+	RntbdOperationTypeMigratePartition                 RntbdOperationType = 0x0022
+)
+
+type RntbdResourceType uint16
+
+const (
+	RntbdResourceTypeConnection              RntbdResourceType = 0x0000
+	RntbdResourceTypeDatabase                RntbdResourceType = 0x0001
+	RntbdResourceTypeCollection              RntbdResourceType = 0x0002
+	RntbdResourceTypeDocument                RntbdResourceType = 0x0003
+	RntbdResourceTypeAttachment              RntbdResourceType = 0x0004
+	RntbdResourceTypeUser                    RntbdResourceType = 0x0005
+	RntbdResourceTypePermission              RntbdResourceType = 0x0006
+	RntbdResourceTypeStoredProcedure         RntbdResourceType = 0x0007
+	RntbdResourceTypeConflict                RntbdResourceType = 0x0008
+	RntbdResourceTypeTrigger                 RntbdResourceType = 0x0009
+	RntbdResourceTypeUserDefinedFunction     RntbdResourceType = 0x000A
+	RntbdResourceTypeModule                  RntbdResourceType = 0x000B
+	RntbdResourceTypeReplica                 RntbdResourceType = 0x000C
+	RntbdResourceTypeModuleCommand           RntbdResourceType = 0x000D
+	RntbdResourceTypeRecord                  RntbdResourceType = 0x000E
+	RntbdResourceTypeOffer                   RntbdResourceType = 0x000F
+	RntbdResourceTypePartitionSetInformation RntbdResourceType = 0x0010
+	RntbdResourceTypeXPReplicatorAddress     RntbdResourceType = 0x0011
+	RntbdResourceTypeMasterPartition         RntbdResourceType = 0x0012
+	RntbdResourceTypeServerPartition         RntbdResourceType = 0x0013
+	RntbdResourceTypeDatabaseAccount         RntbdResourceType = 0x0014
+	RntbdResourceTypeTopology                RntbdResourceType = 0x0015
+	RntbdResourceTypePartitionKeyRange       RntbdResourceType = 0x0016
+	RntbdResourceTypeSchema                  RntbdResourceType = 0x0018
+	RntbdResourceTypeBatchApply              RntbdResourceType = 0x0019
+	RntbdResourceTypeRestoreMetadata         RntbdResourceType = 0x001A
+	RntbdResourceTypeComputeGatewayCharges   RntbdResourceType = 0x001B
+	RntbdResourceTypeRidRange                RntbdResourceType = 0x001C
+	RntbdResourceTypeUserDefinedType         RntbdResourceType = 0x001D
+)
+
+type RntbdRequestHeader uint16
+
+const (
+	RntbdRequestHeaderResourceId                                RntbdRequestHeader = 0x0000 // RntbdTokenType.Bytes, required = false
+	RntbdRequestHeaderAuthorizationToken                        RntbdRequestHeader = 0x0001 // RntbdTokenType.String, required = false
+	RntbdRequestHeaderPayloadPresent                            RntbdRequestHeader = 0x0002 // RntbdTokenType.Byte, required = true
+	RntbdRequestHeaderDate                                      RntbdRequestHeader = 0x0003 // RntbdTokenType.SmallString, required = false
+	RntbdRequestHeaderPageSize                                  RntbdRequestHeader = 0x0004 // RntbdTokenType.ULong, required = false
+	RntbdRequestHeaderSessionToken                              RntbdRequestHeader = 0x0005 // RntbdTokenType.String, required = false
+	RntbdRequestHeaderContinuationToken                         RntbdRequestHeader = 0x0006 // RntbdTokenType.String, required = false
+	RntbdRequestHeaderIndexingDirective                         RntbdRequestHeader = 0x0007 // RntbdTokenType.Byte, required = false
+	RntbdRequestHeaderMatch                                     RntbdRequestHeader = 0x0008 // RntbdTokenType.String, required = false
+	RntbdRequestHeaderPreTriggerInclude                         RntbdRequestHeader = 0x0009 // RntbdTokenType.String, required = false
+	RntbdRequestHeaderPostTriggerInclude                        RntbdRequestHeader = 0x000A // RntbdTokenType.String, required = false
+	RntbdRequestHeaderIsFanout                                  RntbdRequestHeader = 0x000B // RntbdTokenType.Byte, required = false
+	RntbdRequestHeaderCollectionPartitionIndex                  RntbdRequestHeader = 0x000C // RntbdTokenType.ULong, required = false
+	RntbdRequestHeaderCollectionServiceIndex                    RntbdRequestHeader = 0x000D // RntbdTokenType.ULong, required = false
+	RntbdRequestHeaderPreTriggerExclude                         RntbdRequestHeader = 0x000E // RntbdTokenType.String, required = false
+	RntbdRequestHeaderPostTriggerExclude                        RntbdRequestHeader = 0x000F // RntbdTokenType.String, required = false
+	RntbdRequestHeaderConsistencyLevel                          RntbdRequestHeader = 0x0010 // RntbdTokenType.Byte, required = false
+	RntbdRequestHeaderEntityId                                  RntbdRequestHeader = 0x0011 // RntbdTokenType.String, required = false
+	RntbdRequestHeaderResourceSchemaName                        RntbdRequestHeader = 0x0012 // RntbdTokenType.SmallString, required = false
+	RntbdRequestHeaderReplicaPath                               RntbdRequestHeader = 0x0013 // RntbdTokenType.String, required = true
+	RntbdRequestHeaderResourceTokenExpiry                       RntbdRequestHeader = 0x0014 // RntbdTokenType.ULong, required = false
+	RntbdRequestHeaderDatabaseName                              RntbdRequestHeader = 0x0015 // RntbdTokenType.String, required = false
+	RntbdRequestHeaderCollectionName                            RntbdRequestHeader = 0x0016 // RntbdTokenType.String, required = false
+	RntbdRequestHeaderDocumentName                              RntbdRequestHeader = 0x0017 // RntbdTokenType.String, required = false
+	RntbdRequestHeaderAttachmentName                            RntbdRequestHeader = 0x0018 // RntbdTokenType.String, required = false
+	RntbdRequestHeaderUserName                                  RntbdRequestHeader = 0x0019 // RntbdTokenType.String, required = false
+	RntbdRequestHeaderPermissionName                            RntbdRequestHeader = 0x001A // RntbdTokenType.String, required = false
+	RntbdRequestHeaderStoredProcedureName                       RntbdRequestHeader = 0x001B // RntbdTokenType.String, required = false
+	RntbdRequestHeaderUserDefinedFunctionName                   RntbdRequestHeader = 0x001C // RntbdTokenType.String, required = false
+	RntbdRequestHeaderTriggerName                               RntbdRequestHeader = 0x001D // RntbdTokenType.String, required = false
+	RntbdRequestHeaderEnableScanInQuery                         RntbdRequestHeader = 0x001E // RntbdTokenType.Byte, required = false
+	RntbdRequestHeaderEmitVerboseTracesInQuery                  RntbdRequestHeader = 0x001F // RntbdTokenType.Byte, required = false
+	RntbdRequestHeaderConflictName                              RntbdRequestHeader = 0x0020 // RntbdTokenType.String, required = false
+	RntbdRequestHeaderBindReplicaDirective                      RntbdRequestHeader = 0x0021 // RntbdTokenType.String, required = false
+	RntbdRequestHeaderPrimaryMasterKey                          RntbdRequestHeader = 0x0022 // RntbdTokenType.String, required = false
+	RntbdRequestHeaderSecondaryMasterKey                        RntbdRequestHeader = 0x0023 // RntbdTokenType.String, required = false
+	RntbdRequestHeaderPrimaryReadonlyKey                        RntbdRequestHeader = 0x0024 // RntbdTokenType.String, required = false
+	RntbdRequestHeaderSecondaryReadonlyKey                      RntbdRequestHeader = 0x0025 // RntbdTokenType.String, required = false
+	RntbdRequestHeaderProfileRequest                            RntbdRequestHeader = 0x0026 // RntbdTokenType.Byte, required = false
+	RntbdRequestHeaderEnableLowPrecisionOrderBy                 RntbdRequestHeader = 0x0027 // RntbdTokenType.Byte, required = false
+	RntbdRequestHeaderClientVersion                             RntbdRequestHeader = 0x0028 // RntbdTokenType.SmallString, required = false
+	RntbdRequestHeaderCanCharge                                 RntbdRequestHeader = 0x0029 // RntbdTokenType.Byte, required = false
+	RntbdRequestHeaderCanThrottle                               RntbdRequestHeader = 0x002A // RntbdTokenType.Byte, required = false
+	RntbdRequestHeaderPartitionKey                              RntbdRequestHeader = 0x002B // RntbdTokenType.String, required = false
+	RntbdRequestHeaderPartitionKeyRangeId                       RntbdRequestHeader = 0x002C // RntbdTokenType.String, required = false
+	RntbdRequestHeaderNotUsed2D                                 RntbdRequestHeader = 0x002D // RntbdTokenType.Invalid, required = false
+	RntbdRequestHeaderNotUsed2E                                 RntbdRequestHeader = 0x002E // RntbdTokenType.Invalid, required = false
+	RntbdRequestHeaderNotUsed2F                                 RntbdRequestHeader = 0x002F // RntbdTokenType.Invalid, required = false
+	RntbdRequestHeaderMigrateCollectionDirective                RntbdRequestHeader = 0x0031 // RntbdTokenType.Byte, required = false
+	RntbdRequestHeaderNotUsed32                                 RntbdRequestHeader = 0x0032 // RntbdTokenType.Invalid, required = false
+	RntbdRequestHeaderSupportSpatialLegacyCoordinates           RntbdRequestHeader = 0x0033 // RntbdTokenType.Byte, required = false
+	RntbdRequestHeaderPartitionCount                            RntbdRequestHeader = 0x0034 // RntbdTokenType.ULong, required = false
+	RntbdRequestHeaderCollectionRid                             RntbdRequestHeader = 0x0035 // RntbdTokenType.String, required = false
+	RntbdRequestHeaderPartitionKeyRangeName                     RntbdRequestHeader = 0x0036 // RntbdTokenType.String, required = false
+	RntbdRequestHeaderSchemaName                                RntbdRequestHeader = 0x003A // RntbdTokenType.String, required = false
+	RntbdRequestHeaderFilterBySchemaRid                         RntbdRequestHeader = 0x003B // RntbdTokenType.String, required = false
+	RntbdRequestHeaderUsePolygonsSmallerThanAHemisphere         RntbdRequestHeader = 0x003C // RntbdTokenType.Byte, required = false
+	RntbdRequestHeaderGatewaySignature                          RntbdRequestHeader = 0x003D // RntbdTokenType.String, required = false
+	RntbdRequestHeaderEnableLogging                             RntbdRequestHeader = 0x003E // RntbdTokenType.Byte, required = false
+	RntbdRequestHeaderAIM                                       RntbdRequestHeader = 0x003F // RntbdTokenType.String, required = false
+	RntbdRequestHeaderPopulateQuotaInfo                         RntbdRequestHeader = 0x0040 // RntbdTokenType.Byte, required = false
+	RntbdRequestHeaderDisableRUPerMinuteUsage                   RntbdRequestHeader = 0x0041 // RntbdTokenType.Byte, required = false
+	RntbdRequestHeaderPopulateQueryMetrics                      RntbdRequestHeader = 0x0042 // RntbdTokenType.Byte, required = false
+	RntbdRequestHeaderResponseContinuationTokenLimitInKb        RntbdRequestHeader = 0x0043 // RntbdTokenType.ULong, required = false
+	RntbdRequestHeaderPopulatePartitionStatistics               RntbdRequestHeader = 0x0044 // RntbdTokenType.Byte, required = false
+	RntbdRequestHeaderRemoteStorageType                         RntbdRequestHeader = 0x0045 // RntbdTokenType.Byte, required = false
+	RntbdRequestHeaderCollectionRemoteStorageSecurityIdentifier RntbdRequestHeader = 0x0046 // RntbdTokenType.String, required = false
+	RntbdRequestHeaderIfModifiedSince                           RntbdRequestHeader = 0x0047 // RntbdTokenType.String, required = false
+	RntbdRequestHeaderPopulateCollectionThroughputInfo          RntbdRequestHeader = 0x0048 // RntbdTokenType.Byte, required = false
+	RntbdRequestHeaderRemainingTimeInMsOnClientRequest          RntbdRequestHeader = 0x0049 // RntbdTokenType.ULong, required = false
+	RntbdRequestHeaderClientRetryAttemptCount                   RntbdRequestHeader = 0x004A // RntbdTokenType.ULong, required = false
+	RntbdRequestHeaderTargetLsn                                 RntbdRequestHeader = 0x004B // RntbdTokenType.LongLong, required = false
+	RntbdRequestHeaderTargetGlobalCommittedLsn                  RntbdRequestHeader = 0x004C // RntbdTokenType.LongLong, required = false
+	RntbdRequestHeaderTransportRequestID                        RntbdRequestHeader = 0x004D // RntbdTokenType.ULong, required = false
+	RntbdRequestHeaderRestoreMetadaFilter                       RntbdRequestHeader = 0x004E // RntbdTokenType.String, required = false
+	RntbdRequestHeaderRestoreParams                             RntbdRequestHeader = 0x004F // RntbdTokenType.String, required = false
+	RntbdRequestHeaderShareThroughput                           RntbdRequestHeader = 0x0050 // RntbdTokenType.Byte, required = false
+	RntbdRequestHeaderPartitionResourceFilter                   RntbdRequestHeader = 0x0051 // RntbdTokenType.String, required = false
+	RntbdRequestHeaderIsReadOnlyScript                          RntbdRequestHeader = 0x0052 // RntbdTokenType.Byte, required = false
+	RntbdRequestHeaderIsAutoScaleRequest                        RntbdRequestHeader = 0x0053 // RntbdTokenType.Byte, required = false
+	RntbdRequestHeaderForceQueryScan                            RntbdRequestHeader = 0x0054 // RntbdTokenType.Byte, required = false
+	RntbdRequestHeaderCanOfferReplaceComplete                   RntbdRequestHeader = 0x0056 // RntbdTokenType.Byte, required = false
+	RntbdRequestHeaderExcludeSystemProperties                   RntbdRequestHeader = 0x0057 // RntbdTokenType.Byte, required = false
+	RntbdRequestHeaderBinaryId                                  RntbdRequestHeader = 0x0058 // RntbdTokenType.Bytes, required = false
+	RntbdRequestHeaderTimeToLiveInSeconds                       RntbdRequestHeader = 0x0059 // RntbdTokenType.Long, required = false
+	RntbdRequestHeaderEffectivePartitionKey                     RntbdRequestHeader = 0x005A // RntbdTokenType.Bytes, required = false
+	RntbdRequestHeaderBinaryPassthroughRequest                  RntbdRequestHeader = 0x005B // RntbdTokenType.Byte, required = false
+	RntbdRequestHeaderUserDefinedTypeName                       RntbdRequestHeader = 0x005C // RntbdTokenType.String, required = false
+	RntbdRequestHeaderEnableDynamicRidRangeAllocation           RntbdRequestHeader = 0x005D // RntbdTokenType.Byte, required = false
+	RntbdRequestHeaderEnumerationDirection                      RntbdRequestHeader = 0x005E // RntbdTokenType.Byte, required = false
+	RntbdRequestHeaderStartId                                   RntbdRequestHeader = 0x005F // RntbdTokenType.Bytes, required = false
+	RntbdRequestHeaderEndId                                     RntbdRequestHeader = 0x0060 // RntbdTokenType.Bytes, required = false
+	RntbdRequestHeaderFanoutOperationState                      RntbdRequestHeader = 0x0061 // RntbdTokenType.Byte, required = false
+	RntbdRequestHeaderStartEpk                                  RntbdRequestHeader = 0x0062 // RntbdTokenType.Bytes, required = false
+	RntbdRequestHeaderEndEpk                                    RntbdRequestHeader = 0x0063 // RntbdTokenType.Bytes, required = false
+	RntbdRequestHeaderReadFeedKeyType                           RntbdRequestHeader = 0x0064 // RntbdTokenType.Byte, required = false
+	RntbdRequestHeaderContentSerializationFormat                RntbdRequestHeader = 0x0065 // RntbdTokenType.Byte, required = false
+	RntbdRequestHeaderAllowTentativeWrites                      RntbdRequestHeader = 0x0066 // RntbdTokenType.Byte, required = false
+	RntbdRequestHeaderIsUserRequest                             RntbdRequestHeader = 0x0067 // RntbdTokenType.Byte, required = false
+	RntbdRequestHeaderSharedOfferThroughput                     RntbdRequestHeader = 0x0068 // RntbdTokenType.ULong, required = false
+
+	RntbdRequestHeaderSDKSupportedCapabilities RntbdRequestHeader = 0x00A2 // RntbdTokenType.ULong, required = ?
+)
+
+type RntbdResponseHeaderType uint16
+
+const (
+	RntbdResponseHeaderPayloadPresent               RntbdResponseHeaderType = 0x0000 // RntbdTokenType.Byte, required = true
+	RntbdResponseHeaderLastStateChangeDateTime      RntbdResponseHeaderType = 0x0002 // RntbdTokenType.SmallString, required = false
+	RntbdResponseHeaderContinuationToken            RntbdResponseHeaderType = 0x0003 // RntbdTokenType.String, required = false
+	RntbdResponseHeaderETag                         RntbdResponseHeaderType = 0x0004 // RntbdTokenType.String, required = false
+	RntbdResponseHeaderReadsPerformed               RntbdResponseHeaderType = 0x0007 // RntbdTokenType.ULong, required = false
+	RntbdResponseHeaderWritesPerformed              RntbdResponseHeaderType = 0x0008 // RntbdTokenType.ULong, required = false
+	RntbdResponseHeaderQueriesPerformed             RntbdResponseHeaderType = 0x0009 // RntbdTokenType.ULong, required = false
+	RntbdResponseHeaderIndexTermsGenerated          RntbdResponseHeaderType = 0x000A // RntbdTokenType.ULong, required = false
+	RntbdResponseHeaderScriptsExecuted              RntbdResponseHeaderType = 0x000B // RntbdTokenType.ULong, required = false
+	RntbdResponseHeaderRetryAfterMilliseconds       RntbdResponseHeaderType = 0x000C // RntbdTokenType.ULong, required = false
+	RntbdResponseHeaderIndexingDirective            RntbdResponseHeaderType = 0x000D // RntbdTokenType.Byte, required = false
+	RntbdResponseHeaderStorageMaxResoureQuota       RntbdResponseHeaderType = 0x000E // RntbdTokenType.String, required = false
+	RntbdResponseHeaderStorageResourceQuotaUsage    RntbdResponseHeaderType = 0x000F // RntbdTokenType.String, required = false
+	RntbdResponseHeaderSchemaVersion                RntbdResponseHeaderType = 0x0010 // RntbdTokenType.SmallString, required = false
+	RntbdResponseHeaderCollectionPartitionIndex     RntbdResponseHeaderType = 0x0011 // RntbdTokenType.ULong, required = false
+	RntbdResponseHeaderCollectionServiceIndex       RntbdResponseHeaderType = 0x0012 // RntbdTokenType.ULong, required = false
+	RntbdResponseHeaderLSN                          RntbdResponseHeaderType = 0x0013 // RntbdTokenType.LongLong, required = false
+	RntbdResponseHeaderItemCount                    RntbdResponseHeaderType = 0x0014 // RntbdTokenType.ULong, required = false
+	RntbdResponseHeaderRequestCharge                RntbdResponseHeaderType = 0x0015 // RntbdTokenType.Double, required = false
+	RntbdResponseHeaderOwnerFullName                RntbdResponseHeaderType = 0x0017 // RntbdTokenType.String, required = false
+	RntbdResponseHeaderOwnerId                      RntbdResponseHeaderType = 0x0018 // RntbdTokenType.String, required = false
+	RntbdResponseHeaderDatabaseAccountId            RntbdResponseHeaderType = 0x0019 // RntbdTokenType.String, required = false
+	RntbdResponseHeaderQuorumAckedLSN               RntbdResponseHeaderType = 0x001A // RntbdTokenType.LongLong, required = false
+	RntbdResponseHeaderRequestValidationFailure     RntbdResponseHeaderType = 0x001B // RntbdTokenType.Byte, required = false
+	RntbdResponseHeaderSubStatus                    RntbdResponseHeaderType = 0x001C // RntbdTokenType.ULong, required = false
+	RntbdResponseHeaderCollectionUpdateProgress     RntbdResponseHeaderType = 0x001D // RntbdTokenType.ULong, required = false
+	RntbdResponseHeaderCurrentWriteQuorum           RntbdResponseHeaderType = 0x001E // RntbdTokenType.ULong, required = false
+	RntbdResponseHeaderCurrentReplicaSetSize        RntbdResponseHeaderType = 0x001F // RntbdTokenType.ULong, required = false
+	RntbdResponseHeaderCollectionLazyIndexProgress  RntbdResponseHeaderType = 0x0020 // RntbdTokenType.ULong, required = false
+	RntbdResponseHeaderPartitionKeyRangeId          RntbdResponseHeaderType = 0x0021 // RntbdTokenType.String, required = false
+	RntbdResponseHeaderLogResults                   RntbdResponseHeaderType = 0x0025 // RntbdTokenType.String, required = false
+	RntbdResponseHeaderXPRole                       RntbdResponseHeaderType = 0x0026 // RntbdTokenType.ULong, required = false
+	RntbdResponseHeaderIsRUPerMinuteUsed            RntbdResponseHeaderType = 0x0027 // RntbdTokenType.Byte, required = false
+	RntbdResponseHeaderQueryMetrics                 RntbdResponseHeaderType = 0x0028 // RntbdTokenType.String, required = false
+	RntbdResponseHeaderGlobalCommittedLSN           RntbdResponseHeaderType = 0x0029 // RntbdTokenType.LongLong, required = false
+	RntbdResponseHeaderNumberOfReadRegions          RntbdResponseHeaderType = 0x0030 // RntbdTokenType.ULong, required = false
+	RntbdResponseHeaderOfferReplacePending          RntbdResponseHeaderType = 0x0031 // RntbdTokenType.Byte, required = false
+	RntbdResponseHeaderItemLSN                      RntbdResponseHeaderType = 0x0032 // RntbdTokenType.LongLong, required = false
+	RntbdResponseHeaderRestoreState                 RntbdResponseHeaderType = 0x0033 // RntbdTokenType.String, required = false
+	RntbdResponseHeaderCollectionSecurityIdentifier RntbdResponseHeaderType = 0x0034 // RntbdTokenType.String, required = false
+	RntbdResponseHeaderTransportRequestID           RntbdResponseHeaderType = 0x0035 // RntbdTokenType.ULong, required = false
+	RntbdResponseHeaderShareThroughput              RntbdResponseHeaderType = 0x0036 // RntbdTokenType.Byte, required = false
+	RntbdResponseHeaderDisableRntbdChannel          RntbdResponseHeaderType = 0x0038 // RntbdTokenType.Byte, required = false
+	RntbdResponseHeaderServerDateTimeUtc            RntbdResponseHeaderType = 0x0039 // RntbdTokenType.SmallString, required = false
+	RntbdResponseHeaderLocalLSN                     RntbdResponseHeaderType = 0x003A // RntbdTokenType.LongLong, required = false
+	RntbdResponseHeaderQuorumAckedLocalLSN          RntbdResponseHeaderType = 0x003B // RntbdTokenType.LongLong, required = false
+	RntbdResponseHeaderItemLocalLSN                 RntbdResponseHeaderType = 0x003C // RntbdTokenType.LongLong, required = false
+	RntbdResponseHeaderHasTentativeWrites           RntbdResponseHeaderType = 0x003D // RntbdTokenType.Byte, required = false
+	RntbdResponseHeaderSessionToken                 RntbdResponseHeaderType = 0x003E // RntbdTokenType.String, required = false
+)
+
+type RntbdContextHeader uint16
+
+const (
+	RntbdContextHeaderProtocolVersion                 RntbdContextHeader = 0x0000 // RntbdTokenType.ULong, required = false
+	RntbdContextHeaderClientVersion                   RntbdContextHeader = 0x0001 // RntbdTokenType.SmallString, required = false
+	RntbdContextHeaderServerAgent                     RntbdContextHeader = 0x0002 // RntbdTokenType.SmallString, required = true
+	RntbdContextHeaderServerVersion                   RntbdContextHeader = 0x0003 // RntbdTokenType.SmallString, required = true
+	RntbdContextHeaderIdleTimeoutInSeconds            RntbdContextHeader = 0x0004 // RntbdTokenType.ULong, required = false
+	RntbdContextHeaderUnauthenticatedTimeoutInSeconds RntbdContextHeader = 0x0005 // RntbdTokenType.ULong, required = false
+)
+
+type RntbdTokenType uint8
+
+const (
+	RntbdTokenTypeByte        RntbdTokenType = 0x00 // 8bit boolean
+	RntbdTokenTypeUShort      RntbdTokenType = 0x01 // 16bit unsigned integer
+	RntbdTokenTypeULong       RntbdTokenType = 0x02 // 32bit unsigned integer
+	RntbdTokenTypeLong        RntbdTokenType = 0x03 // 32bit signed integer
+	RntbdTokenTypeULongLong   RntbdTokenType = 0x04 // 64bit unsigned integer
+	RntbdTokenTypeLongLong    RntbdTokenType = 0x05 // 64bit signed integer
+	RntbdTokenTypeGuid        RntbdTokenType = 0x06 // 128bit GUID
+	RntbdTokenTypeSmallString RntbdTokenType = 0x07 // 8bit len + string
+	RntbdTokenTypeString      RntbdTokenType = 0x08 // 16bit len + string
+	RntbdTokenTypeULongString RntbdTokenType = 0x09 // 32bit len + string
+	RntbdTokenTypeSmallBytes  RntbdTokenType = 0x0A // 8bit len + bytes
+	RntbdTokenTypeBytes       RntbdTokenType = 0x0B // 16bit len + bytes
+	RntbdTokenTypeULongBytes  RntbdTokenType = 0x0C // 32bit len + bytes
+	RntbdTokenTypeFloat       RntbdTokenType = 0x0D // 32bit float
+	RntbdTokenTypeDouble      RntbdTokenType = 0x0E // 64bit double
+	RntbdTokenTypeInvalid     RntbdTokenType = 0x0F // Invalid token type
+)
+
+func (h RntbdRequestHeader) String() string {
+	switch h {
+	case RntbdRequestHeaderResourceId:
+		return "RntbdRequestHeaderResourceId"
+	case RntbdRequestHeaderAuthorizationToken:
+		return headers.Authorization
+	case RntbdRequestHeaderPayloadPresent:
+		return "RntbdRequestHeaderPayloadPresent"
+	case RntbdRequestHeaderDate:
+		return headers.XDate
+	case RntbdRequestHeaderPageSize:
+		return "RntbdRequestHeaderPageSize"
+	case RntbdRequestHeaderSessionToken:
+		return "RntbdRequestHeaderSessionToken"
+	case RntbdRequestHeaderContinuationToken:
+		return "RntbdRequestHeaderContinuationToken"
+	case RntbdRequestHeaderIndexingDirective:
+		return "RntbdRequestHeaderIndexingDirective"
+	case RntbdRequestHeaderMatch:
+		return "RntbdRequestHeaderMatch"
+	case RntbdRequestHeaderPreTriggerInclude:
+		return "RntbdRequestHeaderPreTriggerInclude"
+	case RntbdRequestHeaderPostTriggerInclude:
+		return "RntbdRequestHeaderPostTriggerInclude"
+	case RntbdRequestHeaderIsFanout:
+		return "RntbdRequestHeaderIsFanout"
+	case RntbdRequestHeaderCollectionPartitionIndex:
+		return "RntbdRequestHeaderCollectionPartitionIndex"
+	case RntbdRequestHeaderCollectionServiceIndex:
+		return "RntbdRequestHeaderCollectionServiceIndex"
+	case RntbdRequestHeaderPreTriggerExclude:
+		return "RntbdRequestHeaderPreTriggerExclude"
+	case RntbdRequestHeaderPostTriggerExclude:
+		return "RntbdRequestHeaderPostTriggerExclude"
+	case RntbdRequestHeaderConsistencyLevel:
+		return headers.ConsistencyLevel
+	case RntbdRequestHeaderEntityId:
+		return "RntbdRequestHeaderEntityId"
+	case RntbdRequestHeaderResourceSchemaName:
+		return "RntbdRequestHeaderResourceSchemaName"
+	case RntbdRequestHeaderReplicaPath:
+		return "RntbdRequestHeaderReplicaPath"
+	case RntbdRequestHeaderResourceTokenExpiry:
+		return "RntbdRequestHeaderResourceTokenExpiry"
+	case RntbdRequestHeaderDatabaseName:
+		return "RntbdRequestHeaderDatabaseName"
+	case RntbdRequestHeaderCollectionName:
+		return "RntbdRequestHeaderCollectionName"
+	case RntbdRequestHeaderDocumentName:
+		return "RntbdRequestHeaderDocumentName"
+	case RntbdRequestHeaderAttachmentName:
+		return "RntbdRequestHeaderAttachmentName"
+	case RntbdRequestHeaderUserName:
+		return "RntbdRequestHeaderUserName"
+	case RntbdRequestHeaderPermissionName:
+		return "RntbdRequestHeaderPermissionName"
+	case RntbdRequestHeaderStoredProcedureName:
+		return "RntbdRequestHeaderStoredProcedureName"
+	case RntbdRequestHeaderUserDefinedFunctionName:
+		return "RntbdRequestHeaderUserDefinedFunctionName"
+	case RntbdRequestHeaderTriggerName:
+		return "RntbdRequestHeaderTriggerName"
+	case RntbdRequestHeaderEnableScanInQuery:
+		return "RntbdRequestHeaderEnableScanInQuery"
+	case RntbdRequestHeaderEmitVerboseTracesInQuery:
+		return "RntbdRequestHeaderEmitVerboseTracesInQuery"
+	case RntbdRequestHeaderConflictName:
+		return "RntbdRequestHeaderConflictName"
+	case RntbdRequestHeaderBindReplicaDirective:
+		return "RntbdRequestHeaderBindReplicaDirective"
+	case RntbdRequestHeaderPrimaryMasterKey:
+		return "RntbdRequestHeaderPrimaryMasterKey"
+	case RntbdRequestHeaderSecondaryMasterKey:
+		return "RntbdRequestHeaderSecondaryMasterKey"
+	case RntbdRequestHeaderPrimaryReadonlyKey:
+		return "RntbdRequestHeaderPrimaryReadonlyKey"
+	case RntbdRequestHeaderSecondaryReadonlyKey:
+		return "RntbdRequestHeaderSecondaryReadonlyKey"
+	case RntbdRequestHeaderProfileRequest:
+		return "RntbdRequestHeaderProfileRequest"
+	case RntbdRequestHeaderEnableLowPrecisionOrderBy:
+		return "RntbdRequestHeaderEnableLowPrecisionOrderBy"
+	case RntbdRequestHeaderClientVersion:
+		return "RntbdRequestHeaderClientVersion"
+	case RntbdRequestHeaderCanCharge:
+		return "RntbdRequestHeaderCanCharge"
+	case RntbdRequestHeaderCanThrottle:
+		return "RntbdRequestHeaderCanThrottle"
+	case RntbdRequestHeaderPartitionKey:
+		return "RntbdRequestHeaderPartitionKey"
+	case RntbdRequestHeaderPartitionKeyRangeId:
+		return "RntbdRequestHeaderPartitionKeyRangeId"
+	case RntbdRequestHeaderNotUsed2D:
+		return "RntbdRequestHeaderNotUsed2D"
+	case RntbdRequestHeaderNotUsed2E:
+		return "RntbdRequestHeaderNotUsed2E"
+	case RntbdRequestHeaderNotUsed2F:
+		return "RntbdRequestHeaderNotUsed2F"
+	case RntbdRequestHeaderMigrateCollectionDirective:
+		return "RntbdRequestHeaderMigrateCollectionDirective"
+	case RntbdRequestHeaderNotUsed32:
+		return "RntbdRequestHeaderNotUsed32"
+	case RntbdRequestHeaderSupportSpatialLegacyCoordinates:
+		return "RntbdRequestHeaderSupportSpatialLegacyCoordinates"
+	case RntbdRequestHeaderPartitionCount:
+		return "RntbdRequestHeaderPartitionCount"
+	case RntbdRequestHeaderCollectionRid:
+		return "RntbdRequestHeaderCollectionRid"
+	case RntbdRequestHeaderPartitionKeyRangeName:
+		return "RntbdRequestHeaderPartitionKeyRangeName"
+	case RntbdRequestHeaderSchemaName:
+		return "RntbdRequestHeaderSchemaName"
+	case RntbdRequestHeaderFilterBySchemaRid:
+		return "RntbdRequestHeaderFilterBySchemaRid"
+	case RntbdRequestHeaderUsePolygonsSmallerThanAHemisphere:
+		return "RntbdRequestHeaderUsePolygonsSmallerThanAHemisphere"
+	case RntbdRequestHeaderGatewaySignature:
+		return "RntbdRequestHeaderGatewaySignature"
+	case RntbdRequestHeaderEnableLogging:
+		return "RntbdRequestHeaderEnableLogging"
+	case RntbdRequestHeaderAIM:
+		return headers.AIM
+	case RntbdRequestHeaderPopulateQuotaInfo:
+		return "RntbdRequestHeaderPopulateQuotaInfo"
+	case RntbdRequestHeaderDisableRUPerMinuteUsage:
+		return "RntbdRequestHeaderDisableRUPerMinuteUsage"
+	case RntbdRequestHeaderPopulateQueryMetrics:
+		return "RntbdRequestHeaderPopulateQueryMetrics"
+	case RntbdRequestHeaderResponseContinuationTokenLimitInKb:
+		return "RntbdRequestHeaderResponseContinuationTokenLimitInKb"
+	case RntbdRequestHeaderPopulatePartitionStatistics:
+		return "RntbdRequestHeaderPopulatePartitionStatistics"
+	case RntbdRequestHeaderRemoteStorageType:
+		return "RntbdRequestHeaderRemoteStorageType"
+	case RntbdRequestHeaderCollectionRemoteStorageSecurityIdentifier:
+		return "RntbdRequestHeaderCollectionRemoteStorageSecurityIdentifier"
+	case RntbdRequestHeaderIfModifiedSince:
+		return "RntbdRequestHeaderIfModifiedSince"
+	case RntbdRequestHeaderPopulateCollectionThroughputInfo:
+		return "RntbdRequestHeaderPopulateCollectionThroughputInfo"
+	case RntbdRequestHeaderRemainingTimeInMsOnClientRequest:
+		return headers.RemainingTimeInMsOnClient
+	case RntbdRequestHeaderClientRetryAttemptCount:
+		return headers.ClientRetryAttemptCount
+	case RntbdRequestHeaderTargetLsn:
+		return "RntbdRequestHeaderTargetLsn"
+	case RntbdRequestHeaderTargetGlobalCommittedLsn:
+		return "RntbdRequestHeaderTargetGlobalCommittedLsn"
+	case RntbdRequestHeaderTransportRequestID:
+		return "RntbdRequestHeaderTransportRequestID"
+	case RntbdRequestHeaderRestoreMetadaFilter:
+		return "RntbdRequestHeaderRestoreMetadaFilter"
+	case RntbdRequestHeaderRestoreParams:
+		return "RntbdRequestHeaderRestoreParams"
+	case RntbdRequestHeaderShareThroughput:
+		return "RntbdRequestHeaderShareThroughput"
+	case RntbdRequestHeaderPartitionResourceFilter:
+		return "RntbdRequestHeaderPartitionResourceFilter"
+	case RntbdRequestHeaderIsReadOnlyScript:
+		return "RntbdRequestHeaderIsReadOnlyScript"
+	case RntbdRequestHeaderIsAutoScaleRequest:
+		return "RntbdRequestHeaderIsAutoScaleRequest"
+	case RntbdRequestHeaderForceQueryScan:
+		return "RntbdRequestHeaderForceQueryScan"
+	case RntbdRequestHeaderCanOfferReplaceComplete:
+		return "RntbdRequestHeaderCanOfferReplaceComplete"
+	case RntbdRequestHeaderExcludeSystemProperties:
+		return "RntbdRequestHeaderExcludeSystemProperties"
+	case RntbdRequestHeaderBinaryId:
+		return "RntbdRequestHeaderBinaryId"
+	case RntbdRequestHeaderTimeToLiveInSeconds:
+		return "RntbdRequestHeaderTimeToLiveInSeconds"
+	case RntbdRequestHeaderEffectivePartitionKey:
+		return "RntbdRequestHeaderEffectivePartitionKey"
+	case RntbdRequestHeaderBinaryPassthroughRequest:
+		return "RntbdRequestHeaderBinaryPassthroughRequest"
+	case RntbdRequestHeaderUserDefinedTypeName:
+		return "RntbdRequestHeaderUserDefinedTypeName"
+	case RntbdRequestHeaderEnableDynamicRidRangeAllocation:
+		return "RntbdRequestHeaderEnableDynamicRidRangeAllocation"
+	case RntbdRequestHeaderEnumerationDirection:
+		return "RntbdRequestHeaderEnumerationDirection"
+	case RntbdRequestHeaderStartId:
+		return "RntbdRequestHeaderStartId"
+	case RntbdRequestHeaderEndId:
+		return "RntbdRequestHeaderEndId"
+	case RntbdRequestHeaderFanoutOperationState:
+		return "RntbdRequestHeaderFanoutOperationState"
+	case RntbdRequestHeaderStartEpk:
+		return "RntbdRequestHeaderStartEpk"
+	case RntbdRequestHeaderEndEpk:
+		return "RntbdRequestHeaderEndEpk"
+	case RntbdRequestHeaderReadFeedKeyType:
+		return "RntbdRequestHeaderReadFeedKeyType"
+	case RntbdRequestHeaderContentSerializationFormat:
+		return "RntbdRequestHeaderContentSerializationFormat"
+	case RntbdRequestHeaderAllowTentativeWrites:
+		return "RntbdRequestHeaderAllowTentativeWrites"
+	case RntbdRequestHeaderIsUserRequest:
+		return "RntbdRequestHeaderIsUserRequest"
+	case RntbdRequestHeaderSharedOfferThroughput:
+		return "RntbdRequestHeaderSharedOfferThroughput"
+	case RntbdRequestHeaderSDKSupportedCapabilities:
+		return headers.SupportedCapabilities
+	}
+
+	return fmt.Sprintf("RntbdRequestHeader(%d)", h)
+}
+
+func (h RntbdContextHeader) String() string {
+	switch h {
+	case RntbdContextHeaderProtocolVersion:
+		return "RntbdContextHeaderProtocolVersion"
+	case RntbdContextHeaderClientVersion:
+		return "RntbdContextHeaderClientVersion"
+	case RntbdContextHeaderServerAgent:
+		return "RntbdContextHeaderServerAgent"
+	case RntbdContextHeaderServerVersion:
+		return "RntbdContextHeaderServerVersion"
+	case RntbdContextHeaderIdleTimeoutInSeconds:
+		return "RntbdContextHeaderIdleTimeoutInSeconds"
+	case RntbdContextHeaderUnauthenticatedTimeoutInSeconds:
+		return "RntbdContextHeaderUnauthenticatedTimeoutInSeconds"
+	}
+
+	return fmt.Sprintf("RntbdContextHeader(%d)", h)
+}
+
+func (h RntbdResponseHeaderType) String() string {
+	switch h {
+	case RntbdResponseHeaderPayloadPresent:
+		return "PayloadPresent"
+	case RntbdResponseHeaderLastStateChangeDateTime:
+		return "LastStateChangeDateTime"
+	case RntbdResponseHeaderContinuationToken:
+		return "ContinuationToken"
+	case RntbdResponseHeaderETag:
+		return "ETag"
+	case RntbdResponseHeaderReadsPerformed:
+		return "ReadsPerformed"
+	case RntbdResponseHeaderWritesPerformed:
+		return "WritesPerformed"
+	case RntbdResponseHeaderQueriesPerformed:
+		return "QueriesPerformed"
+	case RntbdResponseHeaderIndexTermsGenerated:
+		return "IndexTermsGenerated"
+	case RntbdResponseHeaderScriptsExecuted:
+		return "ScriptsExecuted"
+	case RntbdResponseHeaderRetryAfterMilliseconds:
+		return "RetryAfterMilliseconds"
+	case RntbdResponseHeaderIndexingDirective:
+		return "IndexingDirective"
+	case RntbdResponseHeaderStorageMaxResoureQuota:
+		return "StorageMaxResoureQuota"
+	case RntbdResponseHeaderStorageResourceQuotaUsage:
+		return "StorageResourceQuotaUsage"
+	case RntbdResponseHeaderSchemaVersion:
+		return "SchemaVersion"
+	case RntbdResponseHeaderCollectionPartitionIndex:
+		return "CollectionPartitionIndex"
+	case RntbdResponseHeaderCollectionServiceIndex:
+		return "CollectionServiceIndex"
+	case RntbdResponseHeaderLSN:
+		return "LSN"
+	case RntbdResponseHeaderItemCount:
+		return "ItemCount"
+	case RntbdResponseHeaderRequestCharge:
+		return "RequestCharge"
+	case RntbdResponseHeaderOwnerFullName:
+		return "OwnerFullName"
+	case RntbdResponseHeaderOwnerId:
+		return "OwnerId"
+	case RntbdResponseHeaderDatabaseAccountId:
+		return "DatabaseAccountId"
+	case RntbdResponseHeaderQuorumAckedLSN:
+		return "QuorumAckedLSN"
+	case RntbdResponseHeaderRequestValidationFailure:
+		return "RequestValidationFailure"
+	case RntbdResponseHeaderSubStatus:
+		return "SubStatus"
+	case RntbdResponseHeaderCollectionUpdateProgress:
+		return "CollectionUpdateProgress"
+	case RntbdResponseHeaderCurrentWriteQuorum:
+		return "CurrentWriteQuorum"
+	case RntbdResponseHeaderCurrentReplicaSetSize:
+		return "CurrentReplicaSetSize"
+	case RntbdResponseHeaderCollectionLazyIndexProgress:
+		return "CollectionLazyIndexProgress"
+	case RntbdResponseHeaderPartitionKeyRangeId:
+		return "PartitionKeyRangeId"
+	case RntbdResponseHeaderLogResults:
+		return "LogResults"
+	case RntbdResponseHeaderXPRole:
+		return "XPRole"
+	case RntbdResponseHeaderIsRUPerMinuteUsed:
+		return "IsRUPerMinuteUsed"
+	case RntbdResponseHeaderQueryMetrics:
+		return "QueryMetrics"
+	case RntbdResponseHeaderGlobalCommittedLSN:
+		return "GlobalCommittedLSN"
+	case RntbdResponseHeaderNumberOfReadRegions:
+		return "NumberOfReadRegions"
+	case RntbdResponseHeaderOfferReplacePending:
+		return "OfferReplacePending"
+	case RntbdResponseHeaderItemLSN:
+		return "ItemLSN"
+	case RntbdResponseHeaderRestoreState:
+		return "RestoreState"
+	case RntbdResponseHeaderCollectionSecurityIdentifier:
+		return "CollectionSecurityIdentifier"
+	case RntbdResponseHeaderTransportRequestID:
+		return "TransportRequestID"
+	case RntbdResponseHeaderShareThroughput:
+		return "ShareThroughput"
+	case RntbdResponseHeaderDisableRntbdChannel:
+		return "DisableRntbdChannel"
+	case RntbdResponseHeaderServerDateTimeUtc:
+		return "ServerDateTimeUtc"
+	case RntbdResponseHeaderLocalLSN:
+		return "LocalLSN"
+	case RntbdResponseHeaderQuorumAckedLocalLSN:
+		return "QuorumAckedLocalLSN"
+	case RntbdResponseHeaderItemLocalLSN:
+		return "ItemLocalLSN"
+	case RntbdResponseHeaderHasTentativeWrites:
+		return "HasTentativeWrites"
+	case RntbdResponseHeaderSessionToken:
+		return "SessionToken"
+	}
+
+	return fmt.Sprintf("RntbdResponseHeaderType(%d)", h)
+}
+
+func (r RntbdResourceType) String() string {
+	switch r {
+	case RntbdResourceTypeConnection:
+		return "Connection"
+	case RntbdResourceTypeDatabase:
+		return "Database"
+	case RntbdResourceTypeCollection:
+		return "Collection"
+	case RntbdResourceTypeDocument:
+		return "Document"
+	case RntbdResourceTypeAttachment:
+		return "Attachment"
+	case RntbdResourceTypeUser:
+		return "User"
+	case RntbdResourceTypePermission:
+		return "Permission"
+	case RntbdResourceTypeStoredProcedure:
+		return "StoredProcedure"
+	case RntbdResourceTypeConflict:
+		return "Conflict"
+	case RntbdResourceTypeTrigger:
+		return "Trigger"
+	case RntbdResourceTypeUserDefinedFunction:
+		return "UserDefinedFunction"
+	case RntbdResourceTypeModule:
+		return "Module"
+	case RntbdResourceTypeReplica:
+		return "Replica"
+	case RntbdResourceTypeModuleCommand:
+		return "ModuleCommand"
+	case RntbdResourceTypeRecord:
+		return "Record"
+	case RntbdResourceTypeOffer:
+		return "Offer"
+	case RntbdResourceTypePartitionSetInformation:
+		return "PartitionSetInformation"
+	case RntbdResourceTypeXPReplicatorAddress:
+		return "XPReplicatorAddress"
+	case RntbdResourceTypeMasterPartition:
+		return "MasterPartition"
+	case RntbdResourceTypeServerPartition:
+		return "ServerPartition"
+	case RntbdResourceTypeDatabaseAccount:
+		return "DatabaseAccount"
+	case RntbdResourceTypeTopology:
+		return "Topology"
+	case RntbdResourceTypePartitionKeyRange:
+		return "PartitionKeyRange"
+	case RntbdResourceTypeSchema:
+		return "Schema"
+	case RntbdResourceTypeBatchApply:
+		return "BatchApply"
+	case RntbdResourceTypeRestoreMetadata:
+		return "RestoreMetadata"
+	case RntbdResourceTypeComputeGatewayCharges:
+		return "ComputeGatewayCharges"
+	case RntbdResourceTypeRidRange:
+		return "RidRange"
+	case RntbdResourceTypeUserDefinedType:
+		return "UserDefinedType"
+	}
+
+	return fmt.Sprintf("RntbdResourceType(%d)", r)
+}
+
+func (o RntbdOperationType) String() string {
+	switch o {
+	case RntbdOperationTypeConnection:
+		return "Connection"
+	case RntbdOperationTypeCreate:
+		return "Create"
+	case RntbdOperationTypeUpdate:
+		return "Update"
+	case RntbdOperationTypeRead:
+		return "Read"
+	case RntbdOperationTypeReadFeed:
+		return "ReadFeed"
+	case RntbdOperationTypeDelete:
+		return "Delete"
+	case RntbdOperationTypeReplace:
+		return "Replace"
+	case RntbdOperationTypeExecuteJavaScript:
+		return "ExecuteJavaScript"
+	case RntbdOperationTypeSQLQuery:
+		return "SQLQuery"
+	case RntbdOperationTypePause:
+		return "Pause"
+	case RntbdOperationTypeResume:
+		return "Resume"
+	case RntbdOperationTypeStop:
+		return "Stop"
+	case RntbdOperationTypeRecycle:
+		return "Recycle"
+	case RntbdOperationTypeCrash:
+		return "Crash"
+	case RntbdOperationTypeQuery:
+		return "Query"
+	case RntbdOperationTypeForceConfigRefresh:
+		return "ForceConfigRefresh"
+	case RntbdOperationTypeHead:
+		return "Head"
+	case RntbdOperationTypeHeadFeed:
+		return "HeadFeed"
+	case RntbdOperationTypeUpsert:
+		return "Upsert"
+	case RntbdOperationTypeRecreate:
+		return "Recreate"
+	case RntbdOperationTypeThrottle:
+		return "Throttle"
+	case RntbdOperationTypeGetSplitPoint:
+		return "GetSplitPoint"
+	case RntbdOperationTypePreCreateValidation:
+		return "PreCreateValidation"
+	case RntbdOperationTypeBatchApply:
+		return "BatchApply"
+	case RntbdOperationTypeAbortSplit:
+		return "AbortSplit"
+	case RntbdOperationTypeCompleteSplit:
+		return "CompleteSplit"
+	case RntbdOperationTypeOfferUpdateOperation:
+		return "OfferUpdateOperation"
+	case RntbdOperationTypeOfferPreGrowValidation:
+		return "OfferPreGrowValidation"
+	case RntbdOperationTypeBatchReportThroughputUtilization:
+		return "BatchReportThroughputUtilization"
+	case RntbdOperationTypeCompletePartitionMigration:
+		return "CompletePartitionMigration"
+	case RntbdOperationTypeAbortPartitionMigration:
+		return "AbortPartitionMigration"
+	case RntbdOperationTypePreReplaceValidation:
+		return "PreReplaceValidation"
+	case RntbdOperationTypeAddComputeGatewayRequestCharges:
+		return "AddComputeGatewayRequestCharges"
+	case RntbdOperationTypeMigratePartition:
+		return "MigratePartition"
+	}
+
+	return fmt.Sprintf("RntbdOperationType(%d)", o)
+}

internal/rntbd/converter.go

@@ -0,0 +1,128 @@
+package rntbd
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"strconv"
+
+	"github.com/pikami/cosmium/api/headers"
+)
+
+func (f *RntbdFrame) ToHttpRequest() *http.Request {
+	req := &http.Request{
+		Method: operationTypeToHttpMethod(f.OperationType),
+		URL:    &url.URL{Path: frameToPath(f)},
+		Body:   io.NopCloser(bytes.NewReader(f.Payload)),
+		Header: http.Header{},
+	}
+
+	switch f.OperationType {
+	case RntbdOperationTypeQuery, RntbdOperationTypeSQLQuery:
+		req.Header.Set(headers.Query, "true")
+	case RntbdOperationTypeUpsert:
+		req.Header.Set(headers.IsUpsert, "true")
+	}
+
+	if ifMatch, ok := f.RequestHeaders[RntbdRequestHeaderMatch]; ok {
+		if ifMatchString, ok := ifMatch.(string); ok {
+			req.Header.Set(headers.IfMatch, ifMatchString)
+		}
+	}
+
+	if continuationToken, ok := f.RequestHeaders[RntbdRequestHeaderContinuationToken]; ok {
+		if continuationTokenString, ok := continuationToken.(string); ok {
+			req.Header.Set(headers.ContinuationToken, continuationTokenString)
+		}
+	}
+
+	if maxItemCount, ok := f.RequestHeaders[RntbdRequestHeaderPageSize]; ok {
+		if maxItemCountString, ok := maxItemCount.(uint64); ok {
+			req.Header.Set(headers.MaxItemCount, fmt.Sprintf("%d", maxItemCountString))
+		}
+	}
+
+	return req
+}
+
+func ToRntbdResponseFrame(responseWriter *httptest.ResponseRecorder) *RntbdResponseFrameBuilder {
+	builder := &RntbdResponseFrameBuilder{}
+	builder.SetStatusCode(uint16(responseWriter.Code))
+
+	if responseWriter.Header().Get(headers.ETag) != "" {
+		builder.AddHeader(uint16(RntbdResponseHeaderETag), RntbdTokenTypeString, responseWriter.Header().Get(headers.ETag))
+	}
+
+	if responseWriter.Header().Get(headers.ContinuationToken) != "" {
+		builder.AddHeader(uint16(RntbdResponseHeaderContinuationToken), RntbdTokenTypeString, responseWriter.Header().Get(headers.ContinuationToken))
+	}
+
+	if responseWriter.Header().Get(headers.ItemCount) != "" {
+		itemCount, err := strconv.ParseUint(responseWriter.Header().Get(headers.ItemCount), 10, 32)
+		if err != nil {
+			panic(err)
+		}
+
+		builder.AddHeader(uint16(RntbdResponseHeaderItemCount), RntbdTokenTypeULong, uint32(itemCount))
+	}
+
+	if responseWriter.Body.Len() > 0 {
+		builder.AddHeader(uint16(RntbdResponseHeaderPayloadPresent), RntbdTokenTypeByte, []byte{1})
+		builder.AddPayload(responseWriter.Body.Bytes())
+	} else {
+		builder.AddHeader(uint16(RntbdResponseHeaderPayloadPresent), RntbdTokenTypeByte, []byte{0})
+	}
+
+	return builder
+}
+
+func operationTypeToHttpMethod(operationType RntbdOperationType) string {
+	switch operationType {
+	case RntbdOperationTypeRead,
+		RntbdOperationTypeReadFeed:
+		return http.MethodGet
+	case RntbdOperationTypeCreate,
+		RntbdOperationTypeUpsert,
+		RntbdOperationTypeQuery,
+		RntbdOperationTypeSQLQuery:
+		return http.MethodPost
+	case RntbdOperationTypeUpdate,
+		RntbdOperationTypeReplace:
+		return http.MethodPut
+	case RntbdOperationTypeDelete:
+		return http.MethodDelete
+	}
+
+	panic(fmt.Sprintf("Unknown operation type: %d", operationType))
+}
+
+func frameToPath(frame *RntbdFrame) string {
+	databaseName, databaseOk := frame.RequestHeaders[RntbdRequestHeaderDatabaseName]
+	collectionName, collectionOk := frame.RequestHeaders[RntbdRequestHeaderCollectionName]
+	documentName, documentOk := frame.RequestHeaders[RntbdRequestHeaderDocumentName]
+
+	urlPath := ""
+
+	if databaseOk {
+		urlPath += fmt.Sprintf("/dbs/%s", databaseName)
+	} else if frame.ResourceType == RntbdResourceTypeDatabase {
+		urlPath += "/dbs"
+	}
+
+	if collectionOk {
+		urlPath += fmt.Sprintf("/colls/%s", collectionName)
+	} else if frame.ResourceType == RntbdResourceTypeCollection {
+		urlPath += "/colls"
+	}
+
+	if documentOk {
+		urlPath += fmt.Sprintf("/docs/%s", documentName)
+	} else if frame.ResourceType == RntbdResourceTypeDocument {
+		urlPath += "/docs"
+	}
+
+	return urlPath
+}

internal/rntbd/parser.go

@@ -0,0 +1,212 @@
+package rntbd
+
+import (
+	"bufio"
+	"bytes"
+	"encoding/binary"
+	"encoding/hex"
+	"fmt"
+	"io"
+	"os"
+
+	"github.com/pikami/cosmium/internal/logger"
+)
+
+type RntbdFrame struct {
+	ResourceType    RntbdResourceType
+	OperationType   RntbdOperationType
+	ActivityId      []byte
+	RequestHeaders  map[RntbdRequestHeader]any
+	ResponseHeaders map[RntbdResponseHeaderType]any
+	ContextHeaders  map[RntbdContextHeader]any
+	Payload         []byte
+}
+
+func ReadFrame(reader *bufio.Reader) (*RntbdFrame, error) {
+	sizeBytes := readBytes(reader, 4)
+	size := binary.LittleEndian.Uint32(sizeBytes)
+
+	payload := readBytes(reader, int(size)-4)
+
+	frame, err := parseFrame_Int(payload, false)
+	if err != nil {
+		return nil, err
+	}
+
+	if payloadPresent, ok := frame.RequestHeaders[RntbdRequestHeaderPayloadPresent]; ok && payloadPresent.([]byte)[0] == 1 {
+		payloadSize := binary.LittleEndian.Uint32(readBytes(reader, 4))
+		payload := readBytes(reader, int(payloadSize))
+		frame.Payload = payload
+	}
+
+	if payloadPresent, ok := frame.ResponseHeaders[RntbdResponseHeaderPayloadPresent]; ok && payloadPresent.([]byte)[0] == 1 {
+		payloadSize := binary.LittleEndian.Uint32(readBytes(reader, 4))
+		payload := readBytes(reader, int(payloadSize))
+		frame.Payload = payload
+	}
+
+	return frame, nil
+}
+
+func ParseFrame(data []byte, isResponse bool) (*RntbdFrame, error) {
+	if len(data) < 4 {
+		return nil, fmt.Errorf("data too short")
+	}
+
+	reader := bufio.NewReader(bytes.NewReader(data))
+	sizeBytes := readBytes(reader, 4)
+	size := binary.LittleEndian.Uint32(sizeBytes)
+
+	payload := readBytes(reader, int(size)-4)
+	frame, err := parseFrame_Int(payload, isResponse)
+	if err != nil {
+		return nil, err
+	}
+
+	if payloadPresent, ok := frame.RequestHeaders[RntbdRequestHeaderPayloadPresent]; ok && payloadPresent.([]byte)[0] == 1 {
+		payloadSize := binary.LittleEndian.Uint32(readBytes(reader, 4))
+		payload := readBytes(reader, int(payloadSize))
+		frame.Payload = payload
+	}
+
+	if payloadPresent, ok := frame.ResponseHeaders[RntbdResponseHeaderPayloadPresent]; ok && payloadPresent.([]byte)[0] == 1 {
+		payloadSize := binary.LittleEndian.Uint32(readBytes(reader, 4))
+		payload := readBytes(reader, int(payloadSize))
+		frame.Payload = payload
+	}
+
+	leftOverBytes, err := io.ReadAll(reader)
+	if err != nil {
+		logger.ErrorLn("Error reading leftOverBytes:", err)
+	}
+
+	if len(leftOverBytes) > 0 {
+		logger.ErrorLn("Left over bytes:", hex.EncodeToString(leftOverBytes))
+	}
+
+	return frame, nil
+}
+
+func parseFrame_Int(data []byte, isResponse bool) (*RntbdFrame, error) {
+	payloadReader := bufio.NewReader(bytes.NewReader(data))
+
+	resourceTypeBytes := readBytes(payloadReader, 2)
+	resourceType := binary.LittleEndian.Uint16(resourceTypeBytes)
+
+	operationTypeBytes := readBytes(payloadReader, 2)
+	operationType := RntbdOperationType(binary.LittleEndian.Uint16(operationTypeBytes))
+
+	activityIdBytes := readBytes(payloadReader, 16)
+
+	requestHeaders := make(map[RntbdRequestHeader]any)
+	responseHeaders := make(map[RntbdResponseHeaderType]any)
+	contextHeaders := make(map[RntbdContextHeader]any)
+	for {
+		if _, err := payloadReader.Peek(1); err != nil {
+			break
+		}
+
+		headerIdBytes := readBytes(payloadReader, 2)
+		headerId := binary.LittleEndian.Uint16(headerIdBytes)
+
+		token, err := parseRntbdToken(payloadReader)
+		if err != nil {
+			return nil, err
+		}
+
+		if resourceType == uint16(RntbdResourceTypeConnection) {
+			contextHeaders[RntbdContextHeader(headerId)] = token
+		} else if isResponse {
+			responseHeaders[RntbdResponseHeaderType(headerId)] = token
+		} else {
+			requestHeaders[RntbdRequestHeader(headerId)] = token
+		}
+	}
+
+	return &RntbdFrame{
+		ResourceType:    RntbdResourceType(resourceType),
+		OperationType:   RntbdOperationType(operationType),
+		ActivityId:      activityIdBytes,
+		RequestHeaders:  requestHeaders,
+		ResponseHeaders: responseHeaders,
+		ContextHeaders:  contextHeaders,
+	}, nil
+}
+
+func parseRntbdToken(reader *bufio.Reader) (any, error) {
+	tokenTypeBytes := readBytes(reader, 1)
+	tokenType := RntbdTokenType(tokenTypeBytes[0])
+
+	switch tokenType {
+	case RntbdTokenTypeByte:
+		token := readBytes(reader, 1)
+		return token, nil
+	case RntbdTokenTypeUShort:
+		token := binary.LittleEndian.Uint16(readBytes(reader, 2))
+		return token, nil
+	case RntbdTokenTypeULong:
+		token := binary.LittleEndian.Uint32(readBytes(reader, 4))
+		return token, nil
+	case RntbdTokenTypeLong:
+		token := int32(binary.LittleEndian.Uint32(readBytes(reader, 4)))
+		return token, nil
+	case RntbdTokenTypeULongLong:
+		token := binary.LittleEndian.Uint64(readBytes(reader, 8))
+		return token, nil
+	case RntbdTokenTypeLongLong:
+		token := int64(binary.LittleEndian.Uint64(readBytes(reader, 8)))
+		return token, nil
+	case RntbdTokenTypeGuid:
+		token := readBytes(reader, 16)
+		return token, nil
+	case RntbdTokenTypeSmallString:
+		lengthBytes := readBytes(reader, 1)
+		length := uint8(lengthBytes[0])
+		token := readBytes(reader, int(length))
+		return string(token), nil
+	case RntbdTokenTypeString:
+		length := binary.LittleEndian.Uint16(readBytes(reader, 2))
+		token := readBytes(reader, int(length))
+		return string(token), nil
+	case RntbdTokenTypeULongString:
+		length := binary.LittleEndian.Uint32(readBytes(reader, 4))
+		token := readBytes(reader, int(length))
+		return string(token), nil
+	case RntbdTokenTypeSmallBytes:
+		lengthBytes := readBytes(reader, 1)
+		length := uint8(lengthBytes[0])
+		token := readBytes(reader, int(length))
+		return token, nil
+	case RntbdTokenTypeBytes:
+		length := binary.LittleEndian.Uint16(readBytes(reader, 2))
+		token := readBytes(reader, int(length))
+		return token, nil
+	case RntbdTokenTypeULongBytes:
+		length := binary.LittleEndian.Uint32(readBytes(reader, 4))
+		token := readBytes(reader, int(length))
+		return token, nil
+	case RntbdTokenTypeFloat:
+		// I can't be bothered to implement this, let's just return a byte array
+		token := readBytes(reader, 4)
+		return token, nil
+	case RntbdTokenTypeDouble:
+		// I can't be bothered to implement this, let's just return a byte array
+		token := readBytes(reader, 8)
+		return token, nil
+	case RntbdTokenTypeInvalid:
+		return nil, fmt.Errorf("invalid token type")
+	}
+
+	return nil, fmt.Errorf("invalid token type")
+}
+
+func readBytes(reader *bufio.Reader, n int) []byte {
+	bytes := make([]byte, n)
+	_, err := io.ReadFull(reader, bytes)
+	if err != nil {
+		logger.ErrorLn("Error reading bytes:", err)
+		os.Exit(0)
+	}
+
+	return bytes
+}

internal/rntbd/server.go

@@ -0,0 +1,120 @@
+package rntbd
+
+import (
+	"bufio"
+	"crypto/tls"
+	"fmt"
+	"net"
+	"net/http/httptest"
+
+	"github.com/pikami/cosmium/api"
+	"github.com/pikami/cosmium/internal/logger"
+	tlsprovider "github.com/pikami/cosmium/internal/tls_provider"
+)
+
+type RntbdServer struct {
+	port      int
+	listener  net.Listener
+	apiServer *api.ApiServer
+}
+
+func NewRntbdServer(port int, apiServer *api.ApiServer) *RntbdServer {
+	return &RntbdServer{port: port, apiServer: apiServer}
+}
+
+func (s *RntbdServer) Start() error {
+	tlsConfig := tlsprovider.GetDefaultTlsConfig()
+	listener, err := tls.Listen("tcp", fmt.Sprintf(":%d", s.port), tlsConfig)
+	if err != nil {
+		return fmt.Errorf("failed to listen on port %d: %w", s.port, err)
+	}
+	s.listener = listener
+
+	go func() {
+		for {
+			conn, err := s.listener.Accept()
+			if err != nil {
+				logger.ErrorLn("Failed to accept connection:", err)
+				continue
+			}
+
+			go s.handleConnection(conn)
+		}
+	}()
+
+	return nil
+}
+
+func (s *RntbdServer) Stop() error {
+	return s.listener.Close()
+}
+
+func (s *RntbdServer) handleConnection(conn net.Conn) {
+	defer conn.Close()
+
+	reader := bufio.NewReader(conn)
+	writer := bufio.NewWriter(conn)
+
+	for {
+		_, err := reader.Peek(4)
+		if err != nil {
+			return
+		}
+
+		frame, err := ReadFrame(reader)
+		if err != nil {
+			logger.ErrorLn("Failed to read frame:", err)
+			continue
+		}
+
+		if frame.ResourceType == RntbdResourceTypeConnection {
+			responseFrame := buildContextFrame(frame)
+			_, err := writer.Write(responseFrame)
+			writer.Flush()
+			if err != nil {
+				logger.ErrorLn("Failed to write response frame:", err)
+				continue
+			}
+			continue
+		} else if frame.ResourceType == RntbdResourceTypeDatabase ||
+			frame.ResourceType == RntbdResourceTypeCollection ||
+			frame.ResourceType == RntbdResourceTypeDocument {
+			responseFrameBytes := s.passToApiServer(frame)
+			_, err := writer.Write(responseFrameBytes)
+			writer.Flush()
+			if err != nil {
+				logger.ErrorLn("Failed to write response frame:", err)
+				continue
+			}
+			continue
+		} else {
+			logger.Errorf("Received Unhandled RNTBD request from: %s with resource type: %s\n", conn.RemoteAddr(), frame.ResourceType.String())
+		}
+	}
+}
+
+func (s *RntbdServer) passToApiServer(frame *RntbdFrame) []byte {
+	req := frame.ToHttpRequest()
+	responseWriter := httptest.NewRecorder()
+	s.apiServer.GetRouter().ServeHTTP(responseWriter, req)
+
+	responseFrameBuilder := ToRntbdResponseFrame(responseWriter)
+	responseFrameBuilder.SetActivityId(frame.ActivityId)
+	if transportRequestId, ok := frame.RequestHeaders[RntbdRequestHeaderTransportRequestID]; ok {
+		responseFrameBuilder.AddHeader(uint16(RntbdResponseHeaderTransportRequestID), RntbdTokenTypeULong, transportRequestId)
+	}
+
+	responseFrameBuilder.AddHeader(uint16(RntbdResponseHeaderItemLSN), RntbdTokenTypeLongLong, int64(420))
+	responseFrameBuilder.AddHeader(uint16(RntbdResponseHeaderLocalLSN), RntbdTokenTypeLongLong, int64(420))
+	responseFrameBuilder.AddHeader(uint16(RntbdResponseHeaderGlobalCommittedLSN), RntbdTokenTypeLongLong, int64(420))
+	responseFrameBuilder.AddHeader(uint16(RntbdResponseHeaderItemLocalLSN), RntbdTokenTypeLongLong, int64(420))
+	responseFrameBuilder.AddHeader(uint16(RntbdResponseHeaderLSN), RntbdTokenTypeLongLong, int64(420))
+	responseFrameBuilder.AddHeader(uint16(RntbdResponseHeaderQuorumAckedLSN), RntbdTokenTypeLongLong, int64(420))
+	responseFrameBuilder.AddHeader(uint16(RntbdResponseHeaderQuorumAckedLocalLSN), RntbdTokenTypeLongLong, int64(420))
+	responseFrameBuilder.AddHeader(uint16(RntbdResponseHeaderCurrentReplicaSetSize), RntbdTokenTypeULong, uint32(1))
+
+	responseFrame := responseFrameBuilder.Build()
+	responseFrameBytes := responseFrame.ToBytes()
+
+	return responseFrameBytes
+}

internal/struct_hidrators/collection_defaults.go

@@ -1,21 +1,19 @@
 package structhidrators
 
-import (
-	repositorymodels "github.com/pikami/cosmium/internal/repository_models"
-)
+import "github.com/pikami/cosmium/internal/datastore"
 
-var defaultCollection repositorymodels.Collection = repositorymodels.Collection{
-	IndexingPolicy: repositorymodels.CollectionIndexingPolicy{
+var defaultCollection datastore.Collection = datastore.Collection{
+	IndexingPolicy: datastore.CollectionIndexingPolicy{
 		IndexingMode: "consistent",
 		Automatic:    true,
-		IncludedPaths: []repositorymodels.CollectionIndexingPolicyPath{
+		IncludedPaths: []datastore.CollectionIndexingPolicyPath{
 			{Path: "/*"},
 		},
-		ExcludedPaths: []repositorymodels.CollectionIndexingPolicyPath{
+		ExcludedPaths: []datastore.CollectionIndexingPolicyPath{
 			{Path: "/\"_etag\"/?"},
 		},
 	},
-	PartitionKey: repositorymodels.CollectionPartitionKey{
+	PartitionKey: datastore.CollectionPartitionKey{
 		Paths:   []string{"/_partitionKey"},
 		Kind:    "Hash",
 		Version: 2,

internal/struct_hidrators/hidrate.go

@@ -3,11 +3,11 @@ package structhidrators
 import (
 	"reflect"
 
-	repositorymodels "github.com/pikami/cosmium/internal/repository_models"
+	"github.com/pikami/cosmium/internal/datastore"
 )
 
 func Hidrate(input interface{}) interface{} {
-	if reflect.TypeOf(input) == reflect.TypeOf(repositorymodels.Collection{}) {
+	if reflect.TypeOf(input) == reflect.TypeOf(datastore.Collection{}) {
 		return hidrate(input, defaultCollection)
 	}
 	return input

parsers/models.go

@@ -34,6 +34,8 @@ const (
 	SelectItemTypeConstant
 	SelectItemTypeFunctionCall
 	SelectItemTypeSubQuery
+	SelectItemTypeExpression
+	SelectItemTypeBinaryExpression
 )
 
 type SelectItem struct {
@@ -42,6 +44,7 @@ type SelectItem struct {
 	SelectItems []SelectItem
 	Type        SelectItemType
 	Value       interface{}
+	Invert      bool
 	IsTopLevel  bool
 }
 
@@ -63,6 +66,12 @@ type ComparisonExpression struct {
 	Operation string
 }
 
+type BinaryExpression struct {
+	Left      interface{}
+	Right     interface{}
+	Operation string
+}
+
 type ConstantType int
 
 const (
@@ -98,6 +107,7 @@ const (
 	FunctionCallContains     FunctionCallType = "Contains"
 	FunctionCallEndsWith     FunctionCallType = "EndsWith"
 	FunctionCallStartsWith   FunctionCallType = "StartsWith"
+	FunctionCallRegexMatch   FunctionCallType = "RegexMatch"
 	FunctionCallIndexOf      FunctionCallType = "IndexOf"
 	FunctionCallToString     FunctionCallType = "ToString"
 	FunctionCallUpper        FunctionCallType = "Upper"
@@ -133,6 +143,8 @@ const (
 	FunctionCallSetIntersect     FunctionCallType = "SetIntersect"
 	FunctionCallSetUnion         FunctionCallType = "SetUnion"
 
+	FunctionCallIif FunctionCallType = "Iif"
+
 	FunctionCallMathAbs              FunctionCallType = "MathAbs"
 	FunctionCallMathAcos             FunctionCallType = "MathAcos"
 	FunctionCallMathAsin             FunctionCallType = "MathAsin"

parsers/nosql/arithmetics_test.go

@@ -0,0 +1,366 @@
+package nosql_test
+
+import (
+	"testing"
+
+	"github.com/pikami/cosmium/parsers"
+	testutils "github.com/pikami/cosmium/test_utils"
+)
+
+func Test_Parse_Arithmetics(t *testing.T) {
+	t.Run("Should parse multiplication before addition", func(t *testing.T) {
+		testQueryParse(
+			t,
+			`SELECT c.a + c.b * c.c FROM c`,
+			parsers.SelectStmt{
+				SelectItems: []parsers.SelectItem{
+					{
+						Type: parsers.SelectItemTypeBinaryExpression,
+						Value: parsers.BinaryExpression{
+							Operation: "+",
+							Left:      testutils.SelectItem_Path("c", "a"),
+							Right: parsers.SelectItem{
+								Type: parsers.SelectItemTypeBinaryExpression,
+								Value: parsers.BinaryExpression{
+									Operation: "*",
+									Left:      testutils.SelectItem_Path("c", "b"),
+									Right:     testutils.SelectItem_Path("c", "c"),
+								},
+							},
+						},
+					},
+				},
+				Table: parsers.Table{SelectItem: testutils.SelectItem_Path("c")},
+			},
+		)
+	})
+
+	t.Run("Should parse division before subtraction", func(t *testing.T) {
+		testQueryParse(
+			t,
+			`SELECT c.x - c.y / c.z FROM c`,
+			parsers.SelectStmt{
+				SelectItems: []parsers.SelectItem{
+					{
+						Type: parsers.SelectItemTypeBinaryExpression,
+						Value: parsers.BinaryExpression{
+							Operation: "-",
+							Left:      testutils.SelectItem_Path("c", "x"),
+							Right: parsers.SelectItem{
+								Type: parsers.SelectItemTypeBinaryExpression,
+								Value: parsers.BinaryExpression{
+									Operation: "/",
+									Left:      testutils.SelectItem_Path("c", "y"),
+									Right:     testutils.SelectItem_Path("c", "z"),
+								},
+							},
+						},
+					},
+				},
+				Table: parsers.Table{SelectItem: testutils.SelectItem_Path("c")},
+			},
+		)
+	})
+
+	t.Run("Should handle complex mixed operations", func(t *testing.T) {
+		testQueryParse(
+			t,
+			`SELECT c.a + c.b * c.c - c.d / c.e FROM c`,
+			parsers.SelectStmt{
+				SelectItems: []parsers.SelectItem{
+					{
+						Type: parsers.SelectItemTypeBinaryExpression,
+						Value: parsers.BinaryExpression{
+							Operation: "-",
+							Left: parsers.SelectItem{
+								Type: parsers.SelectItemTypeBinaryExpression,
+								Value: parsers.BinaryExpression{
+									Operation: "+",
+									Left:      testutils.SelectItem_Path("c", "a"),
+									Right: parsers.SelectItem{
+										Type: parsers.SelectItemTypeBinaryExpression,
+										Value: parsers.BinaryExpression{
+											Operation: "*",
+											Left:      testutils.SelectItem_Path("c", "b"),
+											Right:     testutils.SelectItem_Path("c", "c"),
+										},
+									},
+								},
+							},
+							Right: parsers.SelectItem{
+								Type: parsers.SelectItemTypeBinaryExpression,
+								Value: parsers.BinaryExpression{
+									Operation: "/",
+									Left:      testutils.SelectItem_Path("c", "d"),
+									Right:     testutils.SelectItem_Path("c", "e"),
+								},
+							},
+						},
+					},
+				},
+				Table: parsers.Table{SelectItem: testutils.SelectItem_Path("c")},
+			},
+		)
+	})
+
+	t.Run("Should respect parentheses overriding precedence", func(t *testing.T) {
+		testQueryParse(
+			t,
+			`SELECT (c.a + c.b) * c.c FROM c`,
+			parsers.SelectStmt{
+				SelectItems: []parsers.SelectItem{
+					{
+						Type: parsers.SelectItemTypeBinaryExpression,
+						Value: parsers.BinaryExpression{
+							Operation: "*",
+							Left: parsers.SelectItem{
+								Type: parsers.SelectItemTypeBinaryExpression,
+								Value: parsers.BinaryExpression{
+									Operation: "+",
+									Left:      testutils.SelectItem_Path("c", "a"),
+									Right:     testutils.SelectItem_Path("c", "b"),
+								},
+							},
+							Right: testutils.SelectItem_Path("c", "c"),
+						},
+					},
+				},
+				Table: parsers.Table{SelectItem: testutils.SelectItem_Path("c")},
+			},
+		)
+	})
+
+	t.Run("Should handle nested parentheses", func(t *testing.T) {
+		testQueryParse(
+			t,
+			`SELECT ((c.a + c.b) * c.c) - c.d FROM c`,
+			parsers.SelectStmt{
+				SelectItems: []parsers.SelectItem{
+					{
+						Type: parsers.SelectItemTypeBinaryExpression,
+						Value: parsers.BinaryExpression{
+							Operation: "-",
+							Left: parsers.SelectItem{
+								Type: parsers.SelectItemTypeBinaryExpression,
+								Value: parsers.BinaryExpression{
+									Operation: "*",
+									Left: parsers.SelectItem{
+										Type: parsers.SelectItemTypeBinaryExpression,
+										Value: parsers.BinaryExpression{
+											Operation: "+",
+											Left:      testutils.SelectItem_Path("c", "a"),
+											Right:     testutils.SelectItem_Path("c", "b"),
+										},
+									},
+									Right: testutils.SelectItem_Path("c", "c"),
+								},
+							},
+							Right: testutils.SelectItem_Path("c", "d"),
+						},
+					},
+				},
+				Table: parsers.Table{SelectItem: testutils.SelectItem_Path("c")},
+			},
+		)
+	})
+
+	t.Run("Should be left associative for same precedence operators", func(t *testing.T) {
+		testQueryParse(
+			t,
+			`SELECT c.a - c.b - c.c FROM c`,
+			parsers.SelectStmt{
+				SelectItems: []parsers.SelectItem{
+					{
+						Type: parsers.SelectItemTypeBinaryExpression,
+						Value: parsers.BinaryExpression{
+							Operation: "-",
+							Left: parsers.SelectItem{
+								Type: parsers.SelectItemTypeBinaryExpression,
+								Value: parsers.BinaryExpression{
+									Operation: "-",
+									Left:      testutils.SelectItem_Path("c", "a"),
+									Right:     testutils.SelectItem_Path("c", "b"),
+								},
+							},
+							Right: testutils.SelectItem_Path("c", "c"),
+						},
+					},
+				},
+				Table: parsers.Table{SelectItem: testutils.SelectItem_Path("c")},
+			},
+		)
+	})
+
+	t.Run("Should be left associative with multiplication and division", func(t *testing.T) {
+		testQueryParse(
+			t,
+			`SELECT c.a * c.b / c.c FROM c`,
+			parsers.SelectStmt{
+				SelectItems: []parsers.SelectItem{
+					{
+						Type: parsers.SelectItemTypeBinaryExpression,
+						Value: parsers.BinaryExpression{
+							Operation: "/",
+							Left: parsers.SelectItem{
+								Type: parsers.SelectItemTypeBinaryExpression,
+								Value: parsers.BinaryExpression{
+									Operation: "*",
+									Left:      testutils.SelectItem_Path("c", "a"),
+									Right:     testutils.SelectItem_Path("c", "b"),
+								},
+							},
+							Right: testutils.SelectItem_Path("c", "c"),
+						},
+					},
+				},
+				Table: parsers.Table{SelectItem: testutils.SelectItem_Path("c")},
+			},
+		)
+	})
+
+	t.Run("Should handle math with constants", func(t *testing.T) {
+		testQueryParse(
+			t,
+			`SELECT 10 + 20 * 5 FROM c`,
+			parsers.SelectStmt{
+				SelectItems: []parsers.SelectItem{
+					{
+						Type: parsers.SelectItemTypeBinaryExpression,
+						Value: parsers.BinaryExpression{
+							Operation: "+",
+							Left:      testutils.SelectItem_Constant_Int(10),
+							Right: parsers.SelectItem{
+								Type: parsers.SelectItemTypeBinaryExpression,
+								Value: parsers.BinaryExpression{
+									Operation: "*",
+									Left:      testutils.SelectItem_Constant_Int(20),
+									Right:     testutils.SelectItem_Constant_Int(5),
+								},
+							},
+						},
+					},
+				},
+				Table: parsers.Table{SelectItem: testutils.SelectItem_Path("c")},
+			},
+		)
+	})
+
+	t.Run("Should handle math with floating point numbers", func(t *testing.T) {
+		testQueryParse(
+			t,
+			`SELECT c.price * 1.08 FROM c`,
+			parsers.SelectStmt{
+				SelectItems: []parsers.SelectItem{
+					{
+						Type: parsers.SelectItemTypeBinaryExpression,
+						Value: parsers.BinaryExpression{
+							Operation: "*",
+							Left:      testutils.SelectItem_Path("c", "price"),
+							Right:     testutils.SelectItem_Constant_Float(1.08),
+						},
+					},
+				},
+				Table: parsers.Table{SelectItem: testutils.SelectItem_Path("c")},
+			},
+		)
+	})
+
+	t.Run("Should handle parentheses around single value", func(t *testing.T) {
+		testQueryParse(
+			t,
+			`SELECT (c.value) FROM c`,
+			parsers.SelectStmt{
+				SelectItems: []parsers.SelectItem{
+					testutils.SelectItem_Path("c", "value"),
+				},
+				Table: parsers.Table{SelectItem: testutils.SelectItem_Path("c")},
+			},
+		)
+	})
+
+	t.Run("Should handle function calls in math expressions", func(t *testing.T) {
+		testQueryParse(
+			t,
+			`SELECT LENGTH(c.name) * 2 + 10 FROM c`,
+			parsers.SelectStmt{
+				SelectItems: []parsers.SelectItem{
+					{
+						Type: parsers.SelectItemTypeBinaryExpression,
+						Value: parsers.BinaryExpression{
+							Operation: "+",
+							Left: parsers.SelectItem{
+								Type: parsers.SelectItemTypeBinaryExpression,
+								Value: parsers.BinaryExpression{
+									Operation: "*",
+									Left: parsers.SelectItem{
+										Type: parsers.SelectItemTypeFunctionCall,
+										Value: parsers.FunctionCall{
+											Type:      parsers.FunctionCallLength,
+											Arguments: []interface{}{testutils.SelectItem_Path("c", "name")},
+										},
+									},
+									Right: testutils.SelectItem_Constant_Int(2),
+								},
+							},
+							Right: testutils.SelectItem_Constant_Int(10),
+						},
+					},
+				},
+				Table: parsers.Table{SelectItem: testutils.SelectItem_Path("c")},
+			},
+		)
+	})
+
+	t.Run("Should handle multiple select items with math", func(t *testing.T) {
+		testQueryParse(
+			t,
+			`SELECT c.a + c.b, c.x * c.y FROM c`,
+			parsers.SelectStmt{
+				SelectItems: []parsers.SelectItem{
+					{
+						Type: parsers.SelectItemTypeBinaryExpression,
+						Value: parsers.BinaryExpression{
+							Operation: "+",
+							Left:      testutils.SelectItem_Path("c", "a"),
+							Right:     testutils.SelectItem_Path("c", "b"),
+						},
+					},
+					{
+						Type: parsers.SelectItemTypeBinaryExpression,
+						Value: parsers.BinaryExpression{
+							Operation: "*",
+							Left:      testutils.SelectItem_Path("c", "x"),
+							Right:     testutils.SelectItem_Path("c", "y"),
+						},
+					},
+				},
+				Table: parsers.Table{SelectItem: testutils.SelectItem_Path("c")},
+			},
+		)
+	})
+
+	t.Run("Should handle math in WHERE clause", func(t *testing.T) {
+		testQueryParse(
+			t,
+			`SELECT c.id FROM c WHERE c.price * 1.08 > 100`,
+			parsers.SelectStmt{
+				SelectItems: []parsers.SelectItem{
+					testutils.SelectItem_Path("c", "id"),
+				},
+				Table: parsers.Table{SelectItem: testutils.SelectItem_Path("c")},
+				Filters: parsers.ComparisonExpression{
+					Operation: ">",
+					Left: parsers.SelectItem{
+						Type: parsers.SelectItemTypeBinaryExpression,
+						Value: parsers.BinaryExpression{
+							Operation: "*",
+							Left:      testutils.SelectItem_Path("c", "price"),
+							Right:     testutils.SelectItem_Constant_Float(1.08),
+						},
+					},
+					Right: testutils.SelectItem_Constant_Int(100),
+				},
+			},
+		)
+	})
+}

parsers/nosql/misc_test.go

@@ -112,6 +112,97 @@ func Test_Parse(t *testing.T) {
 		)
 	})
 
+	t.Run("Should parse NOT IN function", func(t *testing.T) {
+		testQueryParse(
+			t,
+			`SELECT c.id FROM c WHERE c.id NOT IN ("123", "456")`,
+			parsers.SelectStmt{
+				SelectItems: []parsers.SelectItem{
+					{
+						Path: []string{"c", "id"},
+						Type: parsers.SelectItemTypeField,
+					},
+				},
+				Table: parsers.Table{SelectItem: testutils.SelectItem_Path("c")},
+				Filters: parsers.SelectItem{
+					Type:   parsers.SelectItemTypeFunctionCall,
+					Invert: true,
+					Value: parsers.FunctionCall{
+						Type: parsers.FunctionCallIn,
+						Arguments: []interface{}{
+							parsers.SelectItem{
+								Path: []string{"c", "id"},
+								Type: parsers.SelectItemTypeField,
+							},
+							testutils.SelectItem_Constant_String("123"),
+							testutils.SelectItem_Constant_String("456"),
+						},
+					},
+				},
+			},
+		)
+	})
+
+	t.Run("Should parse NOT with parentheses", func(t *testing.T) {
+		testQueryParse(
+			t,
+			`SELECT c.id FROM c WHERE NOT (c.id IN ("123", "456"))`,
+			parsers.SelectStmt{
+				SelectItems: []parsers.SelectItem{
+					{Path: []string{"c", "id"}, Type: parsers.SelectItemTypeField},
+				},
+				Table: parsers.Table{SelectItem: testutils.SelectItem_Path("c")},
+				Filters: parsers.SelectItem{
+					Type:   parsers.SelectItemTypeFunctionCall,
+					Invert: true,
+					Value: parsers.FunctionCall{
+						Type: parsers.FunctionCallIn,
+						Arguments: []interface{}{
+							parsers.SelectItem{
+								Path: []string{"c", "id"},
+								Type: parsers.SelectItemTypeField,
+							},
+							testutils.SelectItem_Constant_String("123"),
+							testutils.SelectItem_Constant_String("456"),
+						},
+					},
+				},
+			},
+		)
+	})
+
+	t.Run("Should parse IN function with function call", func(t *testing.T) {
+		testQueryParse(
+			t,
+			`Select c.id FROM c WHERE (ToString(c.id) IN ("123", "456"))`,
+			parsers.SelectStmt{
+				SelectItems: []parsers.SelectItem{
+					testutils.SelectItem_Path("c", "id"),
+				},
+				Table: parsers.Table{SelectItem: testutils.SelectItem_Path("c")},
+				Filters: parsers.SelectItem{
+					Type: parsers.SelectItemTypeFunctionCall,
+					Value: parsers.FunctionCall{
+						Type: parsers.FunctionCallIn,
+						Arguments: []interface{}{
+							parsers.SelectItem{
+								Type: parsers.SelectItemTypeFunctionCall,
+								Value: parsers.FunctionCall{
+									Type: parsers.FunctionCallToString,
+									Arguments: []interface{}{
+										testutils.SelectItem_Path("c", "id"),
+									},
+								},
+							},
+							testutils.SelectItem_Constant_String("123"),
+							testutils.SelectItem_Constant_String("456"),
+						},
+					},
+				},
+			},
+		)
+	})
+
 	t.Run("Should parse IN selector", func(t *testing.T) {
 		testQueryParse(
 			t,
@@ -131,4 +222,27 @@ func Test_Parse(t *testing.T) {
 			},
 		)
 	})
+
+	t.Run("Should parse IIF function", func(t *testing.T) {
+		testQueryParse(
+			t,
+			`SELECT IIF(true, c.pk, c.id) FROM c`,
+			parsers.SelectStmt{
+				SelectItems: []parsers.SelectItem{
+					{
+						Type: parsers.SelectItemTypeFunctionCall,
+						Value: parsers.FunctionCall{
+							Type: parsers.FunctionCallIif,
+							Arguments: []interface{}{
+								testutils.SelectItem_Constant_Bool(true),
+								testutils.SelectItem_Path("c", "pk"),
+								testutils.SelectItem_Path("c", "id"),
+							},
+						},
+					},
+				},
+				Table: parsers.Table{SelectItem: testutils.SelectItem_Path("c")},
+			},
+		)
+	})
 }

parsers/nosql/nosql.peg

@@ -4,137 +4,137 @@ package nosql
 import "github.com/pikami/cosmium/parsers"
 
 func makeSelectStmt(
-	columns, fromClause, joinItems,
-	whereClause interface{}, distinctClause interface{},
-	count interface{}, groupByClause interface{}, orderList interface{},
-	offsetClause interface{},
+    columns, fromClause, joinItems,
+    whereClause interface{}, distinctClause interface{},
+    count interface{}, groupByClause interface{}, orderList interface{},
+    offsetClause interface{},
 ) (parsers.SelectStmt, error) {
-	selectStmt := parsers.SelectStmt{
-		SelectItems: columns.([]parsers.SelectItem),
-	}
+    selectStmt := parsers.SelectStmt{
+        SelectItems: columns.([]parsers.SelectItem),
+    }
 
     if fromTable, ok := fromClause.(parsers.Table); ok {
         selectStmt.Table = fromTable
     }
 
     if joinItemsArray, ok := joinItems.([]interface{}); ok && len(joinItemsArray) > 0 {
-		selectStmt.JoinItems = make([]parsers.JoinItem, len(joinItemsArray))
-		for i, joinItem := range joinItemsArray {
-			selectStmt.JoinItems[i] = joinItem.(parsers.JoinItem)
-		}
-	}
+        selectStmt.JoinItems = make([]parsers.JoinItem, len(joinItemsArray))
+        for i, joinItem := range joinItemsArray {
+            selectStmt.JoinItems[i] = joinItem.(parsers.JoinItem)
+        }
+    }
 
-	switch v := whereClause.(type) {
-	case parsers.ComparisonExpression, parsers.LogicalExpression, parsers.Constant, parsers.SelectItem:
-		selectStmt.Filters = v
-	}
+    switch v := whereClause.(type) {
+    case parsers.ComparisonExpression, parsers.LogicalExpression, parsers.Constant, parsers.SelectItem:
+        selectStmt.Filters = v
+    }
 
-	if distinctClause != nil {
-		selectStmt.Distinct = true
-	}
+    if distinctClause != nil {
+        selectStmt.Distinct = true
+    }
 
-	if n, ok := count.(int); ok {
-		selectStmt.Count = n
-	}
+    if n, ok := count.(int); ok {
+        selectStmt.Count = n
+    }
 
-	if offsetArr, ok := offsetClause.([]interface{}); ok && len(offsetArr) == 2 {
-		if n, ok := offsetArr[0].(int); ok {
-			selectStmt.Offset = n
-		}
+    if offsetArr, ok := offsetClause.([]interface{}); ok && len(offsetArr) == 2 {
+        if n, ok := offsetArr[0].(int); ok {
+            selectStmt.Offset = n
+        }
 
-		if n, ok := offsetArr[1].(int); ok {
-			selectStmt.Count = n
-		}
-	}
+        if n, ok := offsetArr[1].(int); ok {
+            selectStmt.Count = n
+        }
+    }
 
-	if orderExpressions, ok := orderList.([]parsers.OrderExpression); ok {
-		selectStmt.OrderExpressions = orderExpressions
-	}
+    if orderExpressions, ok := orderList.([]parsers.OrderExpression); ok {
+        selectStmt.OrderExpressions = orderExpressions
+    }
 
-	if groupByClause != nil {
-		selectStmt.GroupBy = groupByClause.([]parsers.SelectItem)
-	}
+    if groupByClause != nil {
+        selectStmt.GroupBy = groupByClause.([]parsers.SelectItem)
+    }
 
-	return selectStmt, nil
+    return selectStmt, nil
 }
 
 func makeJoin(table interface{}, column interface{}) (parsers.JoinItem, error) {
-	joinItem := parsers.JoinItem{}
+    joinItem := parsers.JoinItem{}
 
-	if selectItem, isSelectItem := column.(parsers.SelectItem); isSelectItem {
-		joinItem.SelectItem = selectItem
-		joinItem.Table.Value = selectItem.Alias
-	}
+    if selectItem, isSelectItem := column.(parsers.SelectItem); isSelectItem {
+        joinItem.SelectItem = selectItem
+        joinItem.Table.Value = selectItem.Alias
+    }
 
-	if tableTyped, isTable := table.(parsers.Table); isTable {
-		joinItem.Table = tableTyped
-	}
+    if tableTyped, isTable := table.(parsers.Table); isTable {
+        joinItem.Table = tableTyped
+    }
 
-	return joinItem, nil
+    return joinItem, nil
 }
 
 func makeSelectItem(name interface{}, path interface{}, selectItemType parsers.SelectItemType) (parsers.SelectItem, error) {
-	ps := path.([]interface{})
+    ps := path.([]interface{})
 
-	paths := make([]string, 1)
+    paths := make([]string, 1)
     paths[0] = name.(string)
-	for _, p := range ps {
+    for _, p := range ps {
         paths = append(paths, p.(string))
-	}
+    }
 
-	return parsers.SelectItem{Path: paths, Type: selectItemType}, nil
+    return parsers.SelectItem{Path: paths, Type: selectItemType}, nil
 }
 
 func makeColumnList(column interface{}, other_columns interface{}) ([]parsers.SelectItem, error) {
     collsAsArray := other_columns.([]interface{})
-	columnList := make([]parsers.SelectItem, len(collsAsArray) + 1)
-	columnList[0] = column.(parsers.SelectItem)
+    columnList := make([]parsers.SelectItem, len(collsAsArray) + 1)
+    columnList[0] = column.(parsers.SelectItem)
 
-	for i, v := range collsAsArray {
+    for i, v := range collsAsArray {
         if col, ok := v.(parsers.SelectItem); ok {
-			columnList[i+1] = col
+            columnList[i+1] = col
         }
     }
 
-	return columnList, nil
+    return columnList, nil
 }
 
 func makeSelectArray(columns interface{}) (parsers.SelectItem, error) {
-	return parsers.SelectItem{
-		SelectItems: columns.([]parsers.SelectItem),
-		Type:        parsers.SelectItemTypeArray,
-	}, nil
+    return parsers.SelectItem{
+        SelectItems: columns.([]parsers.SelectItem),
+        Type:        parsers.SelectItemTypeArray,
+    }, nil
 }
 
 func makeSelectObject(field interface{}, other_fields interface{}) (parsers.SelectItem, error) {
     fieldsAsArray := other_fields.([]interface{})
-	fieldsList := make([]parsers.SelectItem, len(fieldsAsArray)+1)
-	fieldsList[0] = field.(parsers.SelectItem)
+    fieldsList := make([]parsers.SelectItem, len(fieldsAsArray)+1)
+    fieldsList[0] = field.(parsers.SelectItem)
 
-	for i, v := range fieldsAsArray {
-		if col, ok := v.(parsers.SelectItem); ok {
-			fieldsList[i+1] = col
-		}
-	}
+    for i, v := range fieldsAsArray {
+        if col, ok := v.(parsers.SelectItem); ok {
+            fieldsList[i+1] = col
+        }
+    }
 
-	return parsers.SelectItem{
-		SelectItems: fieldsList,
-		Type:        parsers.SelectItemTypeObject,
-	}, nil
+    return parsers.SelectItem{
+        SelectItems: fieldsList,
+        Type:        parsers.SelectItemTypeObject,
+    }, nil
 }
 
 func makeOrderByClause(ex1 interface{}, others interface{}) ([]parsers.OrderExpression, error) {
     othersArray := others.([]interface{})
-	orderList := make([]parsers.OrderExpression, len(othersArray)+1)
-	orderList[0] = ex1.(parsers.OrderExpression)
+    orderList := make([]parsers.OrderExpression, len(othersArray)+1)
+    orderList[0] = ex1.(parsers.OrderExpression)
 
-	for i, v := range othersArray {
-		if col, ok := v.(parsers.OrderExpression); ok {
-			orderList[i+1] = col
-		}
-	}
+    for i, v := range othersArray {
+        if col, ok := v.(parsers.OrderExpression); ok {
+            orderList[i+1] = col
+        }
+    }
 
-	return orderList, nil
+    return orderList, nil
 }
 
 func makeOrderExpression(field interface{}, order interface{}) (parsers.OrderExpression, error) {
@@ -144,8 +144,8 @@ func makeOrderExpression(field interface{}, order interface{}) (parsers.OrderExp
     }
 
     if orderValue, ok := order.(parsers.OrderDirection); ok {
-		value.Direction = orderValue
-	}
+        value.Direction = orderValue
+    }
 
     return value, nil
 }
@@ -169,13 +169,39 @@ func joinStrings(array []interface{}) string {
 
 func combineExpressions(ex1 interface{}, exs interface{}, operation parsers.LogicalExpressionType) (interface{}, error) {
     if exs == nil || len(exs.([]interface{})) < 1 {
-		return ex1, nil
-	}
+        return ex1, nil
+    }
 
-	return parsers.LogicalExpression{
-		Expressions: append([]interface{}{ex1}, exs.([]interface{})...),
-		Operation:   operation,
-	}, nil
+    return parsers.LogicalExpression{
+        Expressions: append([]interface{}{ex1}, exs.([]interface{})...),
+        Operation:   operation,
+    }, nil
+}
+
+func makeMathExpression(left interface{}, operations interface{}) (interface{}, error) {
+    if operations == nil || len(operations.([]interface{})) == 0 {
+        return left, nil
+    }
+
+    result := left.(parsers.SelectItem)
+    ops := operations.([]interface{})
+    
+    for _, op := range ops {
+        opData := op.([]interface{})
+        operation := opData[0].(string)
+        right := opData[1].(parsers.SelectItem)
+
+        result = parsers.SelectItem{
+			Type: parsers.SelectItemTypeBinaryExpression,
+			Value: parsers.BinaryExpression{
+				Left: result,
+				Right: right,
+				Operation: operation,
+			},
+		}
+    }
+    
+    return result, nil
 }
 
 }
@@ -204,16 +230,16 @@ TopClause <- Top ws count:Integer {
     return count, nil
 }
 
-FromClause <- From ws table:TableName selectItem:(ws In ws column:SelectItem { return column, nil }) {
+FromClause <- From ws table:TableName selectItem:(ws In ws column:SelectItemWithAlias { return column, nil }) {
     tableTyped := table.(parsers.Table)
 
     if selectItem != nil {
-	    tableTyped.SelectItem = selectItem.(parsers.SelectItem)
+        tableTyped.SelectItem = selectItem.(parsers.SelectItem)
         tableTyped.IsInSelect = true
-	}
+    }
 
-	return tableTyped, nil
-} / From ws column:SelectItem {
+    return tableTyped, nil
+} / From ws column:SelectItemWithAlias {
     tableSelectItem := column.(parsers.SelectItem)
     table := parsers.Table{
         Value: tableSelectItem.Alias,
@@ -222,11 +248,11 @@ FromClause <- From ws table:TableName selectItem:(ws In ws column:SelectItem { r
     return table, nil
 } / From ws subQuery:SubQuerySelectItem {
     subQueryTyped := subQuery.(parsers.SelectItem)
-	table := parsers.Table{
-		Value: subQueryTyped.Alias,
-		SelectItem: subQueryTyped,
-	}
-	return table, nil
+    table := parsers.Table{
+        Value: subQueryTyped.Alias,
+        SelectItem: subQueryTyped,
+    }
+    return table, nil
 }
 
 SubQuery <- exists:(exists:Exists ws { return exists, nil })? "(" ws selectStmt:SelectStmt ws ")" {
@@ -251,7 +277,7 @@ SubQuerySelectItem <- subQuery:SubQuery asClause:(ws alias:AsClause { return ali
     return selectItem, nil
 }
 
-JoinClause <- Join ws table:TableName ws In ws column:SelectItem {
+JoinClause <- Join ws table:TableName ws In ws column:SelectItemWithAlias {
     return makeJoin(table, column)
 } / Join ws subQuery:SubQuerySelectItem {
     return makeJoin(nil, subQuery)
@@ -265,17 +291,40 @@ Selection <- SelectValueSpec / ColumnList / SelectAsterisk
 
 SelectAsterisk <- "*" {
     selectItem, _ := makeSelectItem("c", make([]interface{}, 0), parsers.SelectItemTypeField)
-	selectItem.IsTopLevel = true
+    selectItem.IsTopLevel = true
     return makeColumnList(selectItem, make([]interface{}, 0))
 }
 
-ColumnList <- column:SelectItem other_columns:(ws "," ws coll:SelectItem {return coll, nil })* {
+ColumnList <- column:ExpressionOrSelectItem other_columns:(ws "," ws coll:ExpressionOrSelectItem {return coll, nil })* {
     return makeColumnList(column, other_columns)
 }
 
-SelectValueSpec <- "VALUE"i ws column:SelectItem {
+ExpressionOrSelectItem <- expression:OrExpression asClause:AsClause? {
+    switch typedValue := expression.(type) {
+    case parsers.ComparisonExpression, parsers.LogicalExpression:
+        selectItem := parsers.SelectItem{
+            Type: parsers.SelectItemTypeExpression,
+            Value: typedValue,
+        }
+
+        if aliasValue, ok := asClause.(string); ok {
+            selectItem.Alias = aliasValue
+        }
+
+        return selectItem, nil
+    case parsers.SelectItem:
+        if aliasValue, ok := asClause.(string); ok {
+            typedValue.Alias = aliasValue
+        }
+        return typedValue, nil
+    default:
+        return typedValue, nil
+    }
+} / item:SelectItemWithAlias { return item, nil }
+
+SelectValueSpec <- "VALUE"i ws column:SelectItemWithAlias {
     selectItem := column.(parsers.SelectItem)
-	selectItem.IsTopLevel = true
+    selectItem.IsTopLevel = true
     return makeColumnList(selectItem, make([]interface{}, 0))
 }
 
@@ -289,19 +338,32 @@ SelectArray <- "[" ws columns:ColumnList ws "]" {
 
 SelectObject <- "{" ws field:SelectObjectField ws other_fields:(ws "," ws coll:SelectObjectField {return coll, nil })* ws "}" {
     return makeSelectObject(field, other_fields)
+} / "{" ws "}" {
+    return parsers.SelectItem{
+        SelectItems: []parsers.SelectItem{},
+        Type:        parsers.SelectItemTypeObject,
+    }, nil
 }
 
 SelectObjectField <- name:(Identifier / "\"" key:Identifier "\"" { return key, nil }) ws ":" ws selectItem:SelectItem {
     item := selectItem.(parsers.SelectItem)
-	item.Alias = name.(string)
-	return item, nil
+    item.Alias = name.(string)
+    return item, nil
 }
 
 SelectProperty <- name:Identifier path:(DotFieldAccess / ArrayFieldAccess)* {
     return makeSelectItem(name, path, parsers.SelectItemTypeField)
 }
 
-SelectItem <- selectItem:(SubQuerySelectItem / Literal / FunctionCall / SelectArray / SelectObject / SelectProperty) asClause:AsClause? {
+SelectItemWithAlias <- selectItem:SelectItem asClause:AsClause? {
+    item := selectItem.(parsers.SelectItem)
+    if aliasValue, ok := asClause.(string); ok {
+        item.Alias = aliasValue
+    }
+    return item, nil
+}
+
+SelectItem <- selectItem:(SubQuerySelectItem / Literal / FunctionCall / SelectArray / SelectObject / SelectProperty) {
     var itemResult parsers.SelectItem
     switch typedValue := selectItem.(type) {
     case parsers.SelectItem:
@@ -318,18 +380,14 @@ SelectItem <- selectItem:(SubQuerySelectItem / Literal / FunctionCall / SelectAr
         }
     }
 
-	if aliasValue, ok := asClause.(string); ok {
-		itemResult.Alias = aliasValue
-	}
-
-	return itemResult, nil
+    return itemResult, nil
 }
 
 AsClause <- (ws As)? ws !ExcludedKeywords alias:Identifier {
     return alias, nil
 }
 
-ExcludedKeywords <- Select / Top / As / From / In / Join / Exists / Where / And / Or / GroupBy / OrderBy / Offset
+ExcludedKeywords <- Select / Top / As / From / In / Join / Exists / Where / And / Or / Not / GroupBy / OrderBy / Offset
 
 DotFieldAccess <- "." id:Identifier {
     return id, nil
@@ -355,11 +413,35 @@ AndExpression <- ex1:ComparisonExpression ex2:(ws And ws ex:ComparisonExpression
     return combineExpressions(ex1, ex2, parsers.LogicalExpressionTypeAnd)
 }
 
-ComparisonExpression <- "(" ws ex:OrExpression ws ")" { return ex, nil }
-    / left:SelectItem ws op:ComparisonOperator ws right:SelectItem {
+ComparisonExpression <- left:AddSubExpression ws op:ComparisonOperator ws right:AddSubExpression {
     return parsers.ComparisonExpression{Left:left,Right:right,Operation:op.(string)}, nil
+} / ex:AddSubExpression { return ex, nil }
+
+AddSubExpression <- left:MulDivExpression operations:(ws op:AddOrSubtractOperation ws right:MulDivExpression { return []interface{}{op, right}, nil })* {
+    return makeMathExpression(left, operations)
+}
+
+MulDivExpression <- left:SelectItemWithParentheses operations:(ws op:MultiplyOrDivideOperation ws right:SelectItemWithParentheses { return []interface{}{op, right}, nil })* {
+    return makeMathExpression(left, operations)
+}
+
+SelectItemWithParentheses <- inv:(Not ws)? "(" ws ex:OrExpression ws ")" {
+    if inv != nil {
+        if ex1, ok := ex.(parsers.SelectItem); ok {
+            ex1.Invert = true
+            return ex1, nil
+        }
+    }
+    return ex, nil
+}
+    / inv:(Not ws)? ex:SelectItem {
+    if inv != nil {
+        ex1 := ex.(parsers.SelectItem)
+        ex1.Invert = true
+        return ex1, nil
+    }
+    return ex, nil
 } / ex:BooleanLiteral { return ex, nil }
-  / ex:SelectItem { return ex, nil }
 
 OrderByClause <- OrderBy ws ex1:OrderExpression others:(ws "," ws ex:OrderExpression { return ex, nil })* {
     return makeOrderByClause(ex1, others)
@@ -371,10 +453,10 @@ OrderExpression <- field:SelectProperty ws order:OrderDirection? {
 
 OrderDirection <- ("ASC"i / "DESC"i) {
     if strings.EqualFold(string(c.text), "DESC") {
-		return parsers.OrderDirectionDesc, nil
+        return parsers.OrderDirectionDesc, nil
     }
 
-	return parsers.OrderDirectionAsc, nil
+    return parsers.OrderDirectionAsc, nil
 }
 
 Select <- "SELECT"i
@@ -397,6 +479,8 @@ And <- "AND"i
 
 Or <- "OR"i wss
 
+Not <- "NOT"i
+
 GroupBy <- "GROUP"i ws "BY"i
 
 OrderBy <- "ORDER"i ws "BY"i
@@ -407,6 +491,10 @@ ComparisonOperator <- ("<=" / ">=" / "=" / "!=" / "<" / ">") {
     return string(c.text), nil
 }
 
+AddOrSubtractOperation <- ("+" / "-") { return string(c.text), nil }
+
+MultiplyOrDivideOperation <- ("*" / "/") { return string(c.text), nil }
+
 Literal <- FloatLiteral / IntegerLiteral / StringLiteral / BooleanLiteral / ParameterConstant / NullConstant
 
 ParameterConstant <- "@" Identifier {
@@ -434,6 +522,7 @@ BooleanLiteral <- ("true"i / "false"i) {
 FunctionCall <- StringFunctions
     / TypeCheckingFunctions
     / ArrayFunctions
+    / ConditionalFunctions
     / InFunction
     / AggregateFunctions
     / MathFunctions
@@ -481,6 +570,8 @@ ArrayFunctions <- ArrayConcatExpression
     / SetIntersectExpression
     / SetUnionExpression
 
+ConditionalFunctions <- IifExpression
+
 MathFunctions <- MathAbsExpression
     / MathAcosExpression
     / MathAsinExpression
@@ -590,6 +681,8 @@ ThreeArgumentStringFunctionExpression <- function:ThreeArgumentStringFunction ws
         functionType = parsers.FunctionCallEndsWith
     case "STARTSWITH":
         functionType = parsers.FunctionCallStartsWith
+    case "REGEXMATCH":
+        functionType = parsers.FunctionCallRegexMatch
     case "INDEX_OF":
         functionType = parsers.FunctionCallIndexOf
     }
@@ -597,7 +690,7 @@ ThreeArgumentStringFunctionExpression <- function:ThreeArgumentStringFunction ws
     return createFunctionCall(functionType, []interface{}{ex1, ex2, ignoreCase})
 }
 
-ThreeArgumentStringFunction <- ("CONTAINS"i / "ENDSWITH"i / "STARTSWITH"i / "INDEX_OF"i) {
+ThreeArgumentStringFunction <- ("CONTAINS"i / "ENDSWITH"i / "STARTSWITH"i / "REGEXMATCH"i / "INDEX_OF"i) {
     return string(c.text), nil
 }
 
@@ -673,6 +766,10 @@ SetUnionExpression <- "SetUnion"i ws "(" ws set1:SelectItem ws "," ws set2:Selec
     return createFunctionCall(parsers.FunctionCallSetUnion, []interface{}{set1, set2})
 }
 
+IifExpression <- "IIF"i ws "(" ws condition:SelectItem ws "," ws trueValue:SelectItem ws "," ws falseValue:SelectItem ws ")" {
+    return createFunctionCall(parsers.FunctionCallIif, []interface{}{condition, trueValue, falseValue})
+}
+
 MathAbsExpression <- "ABS"i ws "(" ws ex:SelectItem ws ")" { return createFunctionCall(parsers.FunctionCallMathAbs, []interface{}{ex}) }
 MathAcosExpression <- "ACOS"i ws "(" ws ex:SelectItem ws ")" { return createFunctionCall(parsers.FunctionCallMathAcos, []interface{}{ex}) }
 MathAsinExpression <- "ASIN"i ws "(" ws ex:SelectItem ws ")" { return createFunctionCall(parsers.FunctionCallMathAsin, []interface{}{ex}) }
@@ -716,8 +813,33 @@ MathNumberBinExpression <- "NumberBin"i ws "(" ws ex1:SelectItem others:(ws ","
 MathPiExpression <- "PI"i ws "(" ws ")" { return createFunctionCall(parsers.FunctionCallMathPi, []interface{}{}) }
 MathRandExpression <- "RAND"i ws "(" ws ")" { return createFunctionCall(parsers.FunctionCallMathRand, []interface{}{}) }
 
-InFunction <- ex1:SelectProperty ws In ws "(" ws ex2:SelectItem others:(ws "," ws ex:SelectItem { return ex, nil })* ws ")" {
-    return createFunctionCall(parsers.FunctionCallIn, append([]interface{}{ex1, ex2}, others.([]interface{})...))
+InFunction <- ex1:SelectProperty ws notIn:("NOT"i ws)? In ws "(" ws ex2:SelectItem others:(ws "," ws ex:SelectItem { return ex, nil })* ws ")" {
+    arguments := append([]interface{}{ex1, ex2}, others.([]interface{})...)
+    functionCall, _ := createFunctionCall(parsers.FunctionCallIn, arguments)
+    
+    if notIn != nil {
+        return parsers.SelectItem{
+            Type: parsers.SelectItemTypeFunctionCall,
+            Value: functionCall,
+            Invert: true,
+        }, nil
+    }
+    
+    return functionCall, nil
+}
+/ "(" ws ex1:SelectItem ws notIn:("NOT"i ws)? In ws "(" ws ex2:SelectItem others:(ws "," ws ex:SelectItem { return ex, nil })* ws ")" ws ")" {
+    arguments := append([]interface{}{ex1, ex2}, others.([]interface{})...)
+    functionCall, _ := createFunctionCall(parsers.FunctionCallIn, arguments)
+
+    if notIn != nil {
+        return parsers.SelectItem{
+            Type: parsers.SelectItemTypeFunctionCall,
+            Value: functionCall,
+            Invert: true,
+        }, nil
+    }
+    
+    return functionCall, nil
 }
 
 AvgAggregateExpression   <- "AVG"i "(" ws ex:SelectItem  ws ")" {

parsers/nosql/select_test.go

@@ -178,4 +178,90 @@ func Test_Parse_Select(t *testing.T) {
 			},
 		)
 	})
+
+	t.Run("Should parse SELECT empty object", func(t *testing.T) {
+		testQueryParse(
+			t,
+			`SELECT {} AS obj FROM c`,
+			parsers.SelectStmt{
+				SelectItems: []parsers.SelectItem{
+					{
+						Alias:       "obj",
+						Type:        parsers.SelectItemTypeObject,
+						SelectItems: []parsers.SelectItem{},
+					},
+				},
+				Table: parsers.Table{SelectItem: testutils.SelectItem_Path("c")},
+			},
+		)
+	})
+
+	t.Run("Should parse comparison expressions in SELECT", func(t *testing.T) {
+		testQueryParse(
+			t,
+			`SELECT c["id"] = "123", c["pk"] > 456 FROM c`,
+			parsers.SelectStmt{
+				SelectItems: []parsers.SelectItem{
+					{
+						Type: parsers.SelectItemTypeExpression,
+						Value: parsers.ComparisonExpression{
+							Operation: "=",
+							Left:      testutils.SelectItem_Path("c", "id"),
+							Right:     testutils.SelectItem_Constant_String("123"),
+						},
+					},
+					{
+						Type: parsers.SelectItemTypeExpression,
+						Value: parsers.ComparisonExpression{
+							Operation: ">",
+							Left:      testutils.SelectItem_Path("c", "pk"),
+							Right:     testutils.SelectItem_Constant_Int(456),
+						},
+					},
+				},
+				Table: parsers.Table{SelectItem: testutils.SelectItem_Path("c")},
+			},
+		)
+	})
+
+	t.Run("Should parse logical expressions in SELECT", func(t *testing.T) {
+		testQueryParse(
+			t,
+			`SELECT c["id"] = "123" OR c["pk"] > 456, c["isCool"] AND c["hasRizz"] AS isRizzler FROM c`,
+			parsers.SelectStmt{
+				SelectItems: []parsers.SelectItem{
+					{
+						Type: parsers.SelectItemTypeExpression,
+						Value: parsers.LogicalExpression{
+							Operation: parsers.LogicalExpressionTypeOr,
+							Expressions: []interface{}{
+								parsers.ComparisonExpression{
+									Operation: "=",
+									Left:      testutils.SelectItem_Path("c", "id"),
+									Right:     testutils.SelectItem_Constant_String("123"),
+								},
+								parsers.ComparisonExpression{
+									Operation: ">",
+									Left:      testutils.SelectItem_Path("c", "pk"),
+									Right:     testutils.SelectItem_Constant_Int(456),
+								},
+							},
+						},
+					},
+					{
+						Type:  parsers.SelectItemTypeExpression,
+						Alias: "isRizzler",
+						Value: parsers.LogicalExpression{
+							Operation: parsers.LogicalExpressionTypeAnd,
+							Expressions: []interface{}{
+								testutils.SelectItem_Path("c", "isCool"),
+								testutils.SelectItem_Path("c", "hasRizz"),
+							},
+						},
+					},
+				},
+				Table: parsers.Table{SelectItem: testutils.SelectItem_Path("c")},
+			},
+		)
+	})
 }

parsers/nosql/string_functions_test.go

@@ -168,6 +168,32 @@ func Test_Execute_StringFunctions(t *testing.T) {
 		)
 	})
 
+	t.Run("Should parse function REGEXMATCH()", func(t *testing.T) {
+		testQueryParse(
+			t,
+			`SELECT REGEXMATCH(c.id, "aB c", "ix") FROM c`,
+			parsers.SelectStmt{
+				SelectItems: []parsers.SelectItem{
+					{
+						Type: parsers.SelectItemTypeFunctionCall,
+						Value: parsers.FunctionCall{
+							Type: parsers.FunctionCallRegexMatch,
+							Arguments: []interface{}{
+								parsers.SelectItem{
+									Path: []string{"c", "id"},
+									Type: parsers.SelectItemTypeField,
+								},
+								testutils.SelectItem_Constant_String("aB c"),
+								testutils.SelectItem_Constant_String("ix"),
+							},
+						},
+					},
+				},
+				Table: parsers.Table{SelectItem: testutils.SelectItem_Path("c")},
+			},
+		)
+	})
+
 	t.Run("Should parse function INDEX_OF()", func(t *testing.T) {
 		testQueryParse(
 			t,

parsers/nosql/were_test.go

@@ -148,4 +148,21 @@ func Test_Parse_Were(t *testing.T) {
 			},
 		)
 	})
+
+	t.Run("Should correctly parse NOT conditions", func(t *testing.T) {
+		testQueryParse(
+			t,
+			`select c.id
+		FROM c
+		WHERE NOT c.boolean`,
+			parsers.SelectStmt{
+				SelectItems: []parsers.SelectItem{{Path: []string{"c", "id"}, Alias: ""}},
+				Table:       parsers.Table{SelectItem: testutils.SelectItem_Path("c")},
+				Filters: parsers.SelectItem{
+					Path:   []string{"c", "boolean"},
+					Invert: true,
+				},
+			},
+		)
+	})
 }

query_executors/memory_executor/arithmetics_test.go

@@ -0,0 +1,91 @@
+package memoryexecutor_test
+
+import (
+	"testing"
+
+	"github.com/pikami/cosmium/parsers"
+	memoryexecutor "github.com/pikami/cosmium/query_executors/memory_executor"
+	testutils "github.com/pikami/cosmium/test_utils"
+)
+
+func Test_Execute_Arithmetics(t *testing.T) {
+	mockData := []memoryexecutor.RowType{
+		map[string]interface{}{"id": 1, "a": 420},
+		map[string]interface{}{"id": 2, "a": 6.9},
+		map[string]interface{}{"id": 3},
+	}
+
+	t.Run("Should execute simple arithmetics", func(t *testing.T) {
+		testQueryExecute(
+			t,
+			parsers.SelectStmt{
+				SelectItems: []parsers.SelectItem{
+					{
+						Path: []string{"c", "id"},
+						Type: parsers.SelectItemTypeField,
+					},
+					{
+						Type:  parsers.SelectItemTypeBinaryExpression,
+						Alias: "result",
+						Value: parsers.BinaryExpression{
+							Operation: "+",
+							Left:      testutils.SelectItem_Path("c", "a"),
+							Right: parsers.SelectItem{
+								Type: parsers.SelectItemTypeBinaryExpression,
+								Value: parsers.BinaryExpression{
+									Operation: "*",
+									Left:      testutils.SelectItem_Constant_Float(2.0),
+									Right:     testutils.SelectItem_Constant_Int(3),
+								},
+							},
+						},
+					},
+				},
+				Table: parsers.Table{SelectItem: testutils.SelectItem_Path("c")},
+			},
+			mockData,
+			[]memoryexecutor.RowType{
+				map[string]interface{}{"id": 1, "result": 426.0},
+				map[string]interface{}{"id": 2, "result": 12.9},
+				map[string]interface{}{"id": 3, "result": nil},
+			},
+		)
+	})
+
+	t.Run("Should execute arithmetics in WHERE clause", func(t *testing.T) {
+		testQueryExecute(
+			t,
+			parsers.SelectStmt{
+				SelectItems: []parsers.SelectItem{
+					testutils.SelectItem_Path("c", "id"),
+					{
+						Alias: "result",
+						Type:  parsers.SelectItemTypeBinaryExpression,
+						Value: parsers.BinaryExpression{
+							Operation: "*",
+							Left:      testutils.SelectItem_Path("c", "a"),
+							Right:     testutils.SelectItem_Constant_Int(2),
+						},
+					},
+				},
+				Table: parsers.Table{SelectItem: testutils.SelectItem_Path("c")},
+				Filters: parsers.ComparisonExpression{
+					Operation: ">",
+					Left: parsers.SelectItem{
+						Type: parsers.SelectItemTypeBinaryExpression,
+						Value: parsers.BinaryExpression{
+							Operation: "*",
+							Left:      testutils.SelectItem_Path("c", "a"),
+							Right:     testutils.SelectItem_Constant_Int(2),
+						},
+					},
+					Right: testutils.SelectItem_Constant_Int(500),
+				},
+			},
+			mockData,
+			[]memoryexecutor.RowType{
+				map[string]interface{}{"id": 1, "result": 840.0},
+			},
+		)
+	})
+}

query_executors/memory_executor/array_functions.go

@@ -25,7 +25,7 @@ func (r rowContext) array_Contains(arguments []interface{}) bool {
 	exprToSearch := r.resolveSelectItem(arguments[1].(parsers.SelectItem))
 
 	partialSearch := false
-	if len(arguments) > 2 {
+	if len(arguments) > 2 && arguments[2] != nil {
 		boolExpr := r.resolveSelectItem(arguments[2].(parsers.SelectItem))
 		if boolValue, ok := boolExpr.(bool); ok {
 			partialSearch = boolValue
@@ -196,6 +196,10 @@ func (r rowContext) parseArray(argument interface{}) []interface{} {
 	ex := r.resolveSelectItem(exItem)
 
 	arrValue := reflect.ValueOf(ex)
+	if arrValue.Kind() == reflect.Invalid {
+		return nil
+	}
+
 	if arrValue.Kind() != reflect.Slice {
 		logger.ErrorLn("parseArray got parameters of wrong type")
 		return nil

query_executors/memory_executor/array_iterator.go

@@ -0,0 +1,27 @@
+package memoryexecutor
+
+import "github.com/pikami/cosmium/internal/datastore"
+
+type rowArrayIterator struct {
+	documents []rowContext
+	index     int
+}
+
+func NewRowArrayIterator(documents []rowContext) *rowArrayIterator {
+	return &rowArrayIterator{
+		documents: documents,
+		index:     -1,
+	}
+}
+
+func (i *rowArrayIterator) Next() (rowContext, datastore.DataStoreStatus) {
+	i.index++
+	if i.index >= len(i.documents) {
+		return rowContext{}, datastore.IterEOF
+	}
+
+	row := i.documents[i.index]
+	i.documents[i.index] = rowContext{} // Help GC reclaim memory
+
+	return row, datastore.StatusOk
+}

query_executors/memory_executor/common.go

@@ -0,0 +1,461 @@
+package memoryexecutor
+
+import (
+	"fmt"
+	"reflect"
+	"strconv"
+	"strings"
+
+	"github.com/pikami/cosmium/internal/datastore"
+	"github.com/pikami/cosmium/internal/logger"
+	"github.com/pikami/cosmium/parsers"
+)
+
+type RowType interface{}
+type rowContext struct {
+	tables       map[string]RowType
+	parameters   map[string]interface{}
+	grouppedRows []rowContext
+}
+
+type rowIterator interface {
+	Next() (rowContext, datastore.DataStoreStatus)
+}
+
+type rowTypeIterator interface {
+	Next() (RowType, datastore.DataStoreStatus)
+}
+
+func resolveDestinationColumnName(selectItem parsers.SelectItem, itemIndex int, queryParameters map[string]interface{}) string {
+	if selectItem.Alias != "" {
+		return selectItem.Alias
+	}
+
+	destinationName := fmt.Sprintf("$%d", itemIndex+1)
+	if len(selectItem.Path) > 0 {
+		destinationName = selectItem.Path[len(selectItem.Path)-1]
+	}
+
+	if destinationName[0] == '@' {
+		destinationName = queryParameters[destinationName].(string)
+	}
+
+	return destinationName
+}
+
+func (r rowContext) resolveSelectItem(selectItem parsers.SelectItem) interface{} {
+	if selectItem.Type == parsers.SelectItemTypeArray {
+		return r.selectItem_SelectItemTypeArray(selectItem)
+	}
+
+	if selectItem.Type == parsers.SelectItemTypeObject {
+		return r.selectItem_SelectItemTypeObject(selectItem)
+	}
+
+	if selectItem.Type == parsers.SelectItemTypeConstant {
+		return r.selectItem_SelectItemTypeConstant(selectItem)
+	}
+
+	if selectItem.Type == parsers.SelectItemTypeSubQuery {
+		return r.selectItem_SelectItemTypeSubQuery(selectItem)
+	}
+
+	if selectItem.Type == parsers.SelectItemTypeFunctionCall {
+		if typedFunctionCall, ok := selectItem.Value.(parsers.FunctionCall); ok {
+			return r.selectItem_SelectItemTypeFunctionCall(typedFunctionCall)
+		}
+
+		logger.ErrorLn("parsers.SelectItem has incorrect Value type (expected parsers.FunctionCall)")
+		return nil
+	}
+
+	if selectItem.Type == parsers.SelectItemTypeExpression {
+		if typedExpression, ok := selectItem.Value.(parsers.ComparisonExpression); ok {
+			return r.filters_ComparisonExpression(typedExpression)
+		}
+
+		if typedExpression, ok := selectItem.Value.(parsers.LogicalExpression); ok {
+			return r.filters_LogicalExpression(typedExpression)
+		}
+
+		logger.ErrorLn("parsers.SelectItem has incorrect Value type (expected parsers.ComparisonExpression)")
+		return nil
+	}
+
+	if selectItem.Type == parsers.SelectItemTypeBinaryExpression {
+		if typedSelectItem, ok := selectItem.Value.(parsers.BinaryExpression); ok {
+			return r.selectItem_SelectItemTypeBinaryExpression(typedSelectItem)
+		}
+
+		logger.ErrorLn("parsers.SelectItem has incorrect Value type (expected parsers.BinaryExpression)")
+		return nil
+	}
+
+	return r.selectItem_SelectItemTypeField(selectItem)
+}
+
+func (r rowContext) selectItem_SelectItemTypeArray(selectItem parsers.SelectItem) interface{} {
+	arrayValue := make([]interface{}, 0)
+	for _, subSelectItem := range selectItem.SelectItems {
+		arrayValue = append(arrayValue, r.resolveSelectItem(subSelectItem))
+	}
+	return arrayValue
+}
+
+func (r rowContext) selectItem_SelectItemTypeObject(selectItem parsers.SelectItem) interface{} {
+	objectValue := make(map[string]interface{})
+	for _, subSelectItem := range selectItem.SelectItems {
+		objectValue[subSelectItem.Alias] = r.resolveSelectItem(subSelectItem)
+	}
+	return objectValue
+}
+
+func (r rowContext) selectItem_SelectItemTypeConstant(selectItem parsers.SelectItem) interface{} {
+	var typedValue parsers.Constant
+	var ok bool
+	if typedValue, ok = selectItem.Value.(parsers.Constant); !ok {
+		// TODO: Handle error
+		logger.ErrorLn("parsers.Constant has incorrect Value type")
+	}
+
+	if typedValue.Type == parsers.ConstantTypeParameterConstant &&
+		r.parameters != nil {
+		if key, ok := typedValue.Value.(string); ok {
+			return r.parameters[key]
+		}
+	}
+
+	return typedValue.Value
+}
+
+func (r rowContext) selectItem_SelectItemTypeSubQuery(selectItem parsers.SelectItem) interface{} {
+	subQuery := selectItem.Value.(parsers.SelectStmt)
+	subQueryResult := executeQuery(
+		subQuery,
+		NewRowArrayIterator([]rowContext{r}),
+	)
+
+	if subQuery.Exists {
+		_, status := subQueryResult.Next()
+		return status == datastore.StatusOk
+	}
+
+	allDocuments := make([]RowType, 0)
+	for {
+		row, status := subQueryResult.Next()
+		if status != datastore.StatusOk {
+			break
+		}
+		allDocuments = append(allDocuments, row)
+	}
+
+	return allDocuments
+}
+
+func (r rowContext) selectItem_SelectItemTypeFunctionCall(functionCall parsers.FunctionCall) interface{} {
+	switch functionCall.Type {
+	case parsers.FunctionCallStringEquals:
+		return r.strings_StringEquals(functionCall.Arguments)
+	case parsers.FunctionCallContains:
+		return r.strings_Contains(functionCall.Arguments)
+	case parsers.FunctionCallEndsWith:
+		return r.strings_EndsWith(functionCall.Arguments)
+	case parsers.FunctionCallStartsWith:
+		return r.strings_StartsWith(functionCall.Arguments)
+	case parsers.FunctionCallRegexMatch:
+		return r.strings_RegexMatch(functionCall.Arguments)
+	case parsers.FunctionCallConcat:
+		return r.strings_Concat(functionCall.Arguments)
+	case parsers.FunctionCallIndexOf:
+		return r.strings_IndexOf(functionCall.Arguments)
+	case parsers.FunctionCallToString:
+		return r.strings_ToString(functionCall.Arguments)
+	case parsers.FunctionCallUpper:
+		return r.strings_Upper(functionCall.Arguments)
+	case parsers.FunctionCallLower:
+		return r.strings_Lower(functionCall.Arguments)
+	case parsers.FunctionCallLeft:
+		return r.strings_Left(functionCall.Arguments)
+	case parsers.FunctionCallLength:
+		return r.strings_Length(functionCall.Arguments)
+	case parsers.FunctionCallLTrim:
+		return r.strings_LTrim(functionCall.Arguments)
+	case parsers.FunctionCallReplace:
+		return r.strings_Replace(functionCall.Arguments)
+	case parsers.FunctionCallReplicate:
+		return r.strings_Replicate(functionCall.Arguments)
+	case parsers.FunctionCallReverse:
+		return r.strings_Reverse(functionCall.Arguments)
+	case parsers.FunctionCallRight:
+		return r.strings_Right(functionCall.Arguments)
+	case parsers.FunctionCallRTrim:
+		return r.strings_RTrim(functionCall.Arguments)
+	case parsers.FunctionCallSubstring:
+		return r.strings_Substring(functionCall.Arguments)
+	case parsers.FunctionCallTrim:
+		return r.strings_Trim(functionCall.Arguments)
+
+	case parsers.FunctionCallIsDefined:
+		return r.typeChecking_IsDefined(functionCall.Arguments)
+	case parsers.FunctionCallIsArray:
+		return r.typeChecking_IsArray(functionCall.Arguments)
+	case parsers.FunctionCallIsBool:
+		return r.typeChecking_IsBool(functionCall.Arguments)
+	case parsers.FunctionCallIsFiniteNumber:
+		return r.typeChecking_IsFiniteNumber(functionCall.Arguments)
+	case parsers.FunctionCallIsInteger:
+		return r.typeChecking_IsInteger(functionCall.Arguments)
+	case parsers.FunctionCallIsNull:
+		return r.typeChecking_IsNull(functionCall.Arguments)
+	case parsers.FunctionCallIsNumber:
+		return r.typeChecking_IsNumber(functionCall.Arguments)
+	case parsers.FunctionCallIsObject:
+		return r.typeChecking_IsObject(functionCall.Arguments)
+	case parsers.FunctionCallIsPrimitive:
+		return r.typeChecking_IsPrimitive(functionCall.Arguments)
+	case parsers.FunctionCallIsString:
+		return r.typeChecking_IsString(functionCall.Arguments)
+
+	case parsers.FunctionCallArrayConcat:
+		return r.array_Concat(functionCall.Arguments)
+	case parsers.FunctionCallArrayContains:
+		return r.array_Contains(functionCall.Arguments)
+	case parsers.FunctionCallArrayContainsAny:
+		return r.array_Contains_Any(functionCall.Arguments)
+	case parsers.FunctionCallArrayContainsAll:
+		return r.array_Contains_All(functionCall.Arguments)
+	case parsers.FunctionCallArrayLength:
+		return r.array_Length(functionCall.Arguments)
+	case parsers.FunctionCallArraySlice:
+		return r.array_Slice(functionCall.Arguments)
+	case parsers.FunctionCallSetIntersect:
+		return r.set_Intersect(functionCall.Arguments)
+	case parsers.FunctionCallSetUnion:
+		return r.set_Union(functionCall.Arguments)
+
+	case parsers.FunctionCallIif:
+		return r.misc_Iif(functionCall.Arguments)
+
+	case parsers.FunctionCallMathAbs:
+		return r.math_Abs(functionCall.Arguments)
+	case parsers.FunctionCallMathAcos:
+		return r.math_Acos(functionCall.Arguments)
+	case parsers.FunctionCallMathAsin:
+		return r.math_Asin(functionCall.Arguments)
+	case parsers.FunctionCallMathAtan:
+		return r.math_Atan(functionCall.Arguments)
+	case parsers.FunctionCallMathCeiling:
+		return r.math_Ceiling(functionCall.Arguments)
+	case parsers.FunctionCallMathCos:
+		return r.math_Cos(functionCall.Arguments)
+	case parsers.FunctionCallMathCot:
+		return r.math_Cot(functionCall.Arguments)
+	case parsers.FunctionCallMathDegrees:
+		return r.math_Degrees(functionCall.Arguments)
+	case parsers.FunctionCallMathExp:
+		return r.math_Exp(functionCall.Arguments)
+	case parsers.FunctionCallMathFloor:
+		return r.math_Floor(functionCall.Arguments)
+	case parsers.FunctionCallMathIntBitNot:
+		return r.math_IntBitNot(functionCall.Arguments)
+	case parsers.FunctionCallMathLog10:
+		return r.math_Log10(functionCall.Arguments)
+	case parsers.FunctionCallMathRadians:
+		return r.math_Radians(functionCall.Arguments)
+	case parsers.FunctionCallMathRound:
+		return r.math_Round(functionCall.Arguments)
+	case parsers.FunctionCallMathSign:
+		return r.math_Sign(functionCall.Arguments)
+	case parsers.FunctionCallMathSin:
+		return r.math_Sin(functionCall.Arguments)
+	case parsers.FunctionCallMathSqrt:
+		return r.math_Sqrt(functionCall.Arguments)
+	case parsers.FunctionCallMathSquare:
+		return r.math_Square(functionCall.Arguments)
+	case parsers.FunctionCallMathTan:
+		return r.math_Tan(functionCall.Arguments)
+	case parsers.FunctionCallMathTrunc:
+		return r.math_Trunc(functionCall.Arguments)
+	case parsers.FunctionCallMathAtn2:
+		return r.math_Atn2(functionCall.Arguments)
+	case parsers.FunctionCallMathIntAdd:
+		return r.math_IntAdd(functionCall.Arguments)
+	case parsers.FunctionCallMathIntBitAnd:
+		return r.math_IntBitAnd(functionCall.Arguments)
+	case parsers.FunctionCallMathIntBitLeftShift:
+		return r.math_IntBitLeftShift(functionCall.Arguments)
+	case parsers.FunctionCallMathIntBitOr:
+		return r.math_IntBitOr(functionCall.Arguments)
+	case parsers.FunctionCallMathIntBitRightShift:
+		return r.math_IntBitRightShift(functionCall.Arguments)
+	case parsers.FunctionCallMathIntBitXor:
+		return r.math_IntBitXor(functionCall.Arguments)
+	case parsers.FunctionCallMathIntDiv:
+		return r.math_IntDiv(functionCall.Arguments)
+	case parsers.FunctionCallMathIntMod:
+		return r.math_IntMod(functionCall.Arguments)
+	case parsers.FunctionCallMathIntMul:
+		return r.math_IntMul(functionCall.Arguments)
+	case parsers.FunctionCallMathIntSub:
+		return r.math_IntSub(functionCall.Arguments)
+	case parsers.FunctionCallMathPower:
+		return r.math_Power(functionCall.Arguments)
+	case parsers.FunctionCallMathLog:
+		return r.math_Log(functionCall.Arguments)
+	case parsers.FunctionCallMathNumberBin:
+		return r.math_NumberBin(functionCall.Arguments)
+	case parsers.FunctionCallMathPi:
+		return r.math_Pi()
+	case parsers.FunctionCallMathRand:
+		return r.math_Rand()
+
+	case parsers.FunctionCallAggregateAvg:
+		return r.aggregate_Avg(functionCall.Arguments)
+	case parsers.FunctionCallAggregateCount:
+		return r.aggregate_Count(functionCall.Arguments)
+	case parsers.FunctionCallAggregateMax:
+		return r.aggregate_Max(functionCall.Arguments)
+	case parsers.FunctionCallAggregateMin:
+		return r.aggregate_Min(functionCall.Arguments)
+	case parsers.FunctionCallAggregateSum:
+		return r.aggregate_Sum(functionCall.Arguments)
+
+	case parsers.FunctionCallIn:
+		return r.misc_In(functionCall.Arguments)
+	}
+
+	logger.Errorf("Unknown function call type: %v", functionCall.Type)
+	return nil
+}
+
+func (r rowContext) selectItem_SelectItemTypeBinaryExpression(binaryExpression parsers.BinaryExpression) interface{} {
+	if binaryExpression.Left == nil || binaryExpression.Right == nil {
+		logger.Debug("parsers.BinaryExpression has nil Left or Right value")
+		return nil
+	}
+
+	leftValue := r.resolveSelectItem(binaryExpression.Left.(parsers.SelectItem))
+	rightValue := r.resolveSelectItem(binaryExpression.Right.(parsers.SelectItem))
+
+	if leftValue == nil || rightValue == nil {
+		return nil
+	}
+
+	leftNumber, leftIsNumber := numToFloat64(leftValue)
+	rightNumber, rightIsNumber := numToFloat64(rightValue)
+
+	if !leftIsNumber || !rightIsNumber {
+		logger.Debug("Binary expression operands are not numbers, returning nil")
+		return nil
+	}
+
+	switch binaryExpression.Operation {
+	case "+":
+		return leftNumber + rightNumber
+	case "-":
+		return leftNumber - rightNumber
+	case "*":
+		return leftNumber * rightNumber
+	case "/":
+		if rightNumber == 0 {
+			logger.Debug("Division by zero in binary expression")
+			return nil
+		}
+		return leftNumber / rightNumber
+	default:
+		return nil
+	}
+}
+
+func (r rowContext) selectItem_SelectItemTypeField(selectItem parsers.SelectItem) interface{} {
+	value := r.tables[selectItem.Path[0]]
+
+	if len(selectItem.Path) > 1 {
+		for _, pathSegment := range selectItem.Path[1:] {
+			if pathSegment[0] == '@' {
+				pathSegment = r.parameters[pathSegment].(string)
+			}
+
+			switch nestedValue := value.(type) {
+			case map[string]interface{}:
+				value = nestedValue[pathSegment]
+			case map[string]RowType:
+				value = nestedValue[pathSegment]
+			case datastore.Document:
+				value = nestedValue[pathSegment]
+			case map[string]datastore.Document:
+				value = nestedValue[pathSegment]
+			case []int, []string, []interface{}:
+				slice := reflect.ValueOf(nestedValue)
+				if arrayIndex, err := strconv.Atoi(pathSegment); err == nil && slice.Len() > arrayIndex {
+					value = slice.Index(arrayIndex).Interface()
+				} else {
+					return nil
+				}
+			default:
+				return nil
+			}
+		}
+	}
+
+	return value
+}
+
+func compareValues(val1, val2 interface{}) int {
+	// Handle nil values
+	if val1 == nil && val2 == nil {
+		return 0
+	} else if val1 == nil {
+		return -1
+	} else if val2 == nil {
+		return 1
+	}
+
+	// Handle number values
+	val1Number, val1IsNumber := numToFloat64(val1)
+	val2Number, val2IsNumber := numToFloat64(val2)
+	if val1IsNumber && val2IsNumber {
+		if val1Number < val2Number {
+			return -1
+		} else if val1Number > val2Number {
+			return 1
+		}
+		return 0
+	}
+
+	// Handle different types
+	if reflect.TypeOf(val1) != reflect.TypeOf(val2) {
+		return 1
+	}
+
+	switch val1 := val1.(type) {
+	case string:
+		val2 := val2.(string)
+		return strings.Compare(val1, val2)
+	case bool:
+		val2 := val2.(bool)
+		if val1 == val2 {
+			return 0
+		} else if val1 {
+			return 1
+		} else {
+			return -1
+		}
+	// TODO: Add more types
+	default:
+		if reflect.DeepEqual(val1, val2) {
+			return 0
+		}
+		return 1
+	}
+}
+
+func copyMap[T RowType | []RowType](originalMap map[string]T) map[string]T {
+	targetMap := make(map[string]T)
+
+	for k, v := range originalMap {
+		targetMap[k] = v
+	}
+
+	return targetMap
+}

query_executors/memory_executor/comparison_expression_test.go

@@ -0,0 +1,92 @@
+package memoryexecutor_test
+
+import (
+	"testing"
+
+	"github.com/pikami/cosmium/parsers"
+	memoryexecutor "github.com/pikami/cosmium/query_executors/memory_executor"
+	testutils "github.com/pikami/cosmium/test_utils"
+)
+
+func Test_Execute_Expressions(t *testing.T) {
+	mockData := []memoryexecutor.RowType{
+		map[string]interface{}{"id": "123", "age": 10, "isCool": true},
+		map[string]interface{}{"id": "456", "age": 20, "isCool": false},
+		map[string]interface{}{"id": "789", "age": 30, "isCool": true},
+	}
+
+	t.Run("Should execute comparison expressions in SELECT", func(t *testing.T) {
+		testQueryExecute(
+			t,
+			parsers.SelectStmt{
+				SelectItems: []parsers.SelectItem{
+					{
+						Path: []string{"c", "id"},
+						Type: parsers.SelectItemTypeField,
+					},
+					{
+						Alias: "isAdult",
+						Type:  parsers.SelectItemTypeExpression,
+						Value: parsers.ComparisonExpression{
+							Operation: ">=",
+							Left:      testutils.SelectItem_Path("c", "age"),
+							Right:     testutils.SelectItem_Constant_Int(18),
+						},
+					},
+					{
+						Alias: "isNotCool",
+						Type:  parsers.SelectItemTypeExpression,
+						Value: parsers.ComparisonExpression{
+							Operation: "!=",
+							Left:      testutils.SelectItem_Path("c", "isCool"),
+							Right:     testutils.SelectItem_Constant_Bool(true),
+						},
+					},
+				},
+				Table: parsers.Table{SelectItem: testutils.SelectItem_Path("c")},
+			},
+			mockData,
+			[]memoryexecutor.RowType{
+				map[string]interface{}{"id": "123", "isAdult": false, "isNotCool": false},
+				map[string]interface{}{"id": "456", "isAdult": true, "isNotCool": true},
+				map[string]interface{}{"id": "789", "isAdult": true, "isNotCool": false},
+			},
+		)
+	})
+
+	t.Run("Should execute logical expressions in SELECT", func(t *testing.T) {
+		testQueryExecute(
+			t,
+			parsers.SelectStmt{
+				SelectItems: []parsers.SelectItem{
+					{
+						Path: []string{"c", "id"},
+						Type: parsers.SelectItemTypeField,
+					},
+					{
+						Alias: "isCoolAndAdult",
+						Type:  parsers.SelectItemTypeExpression,
+						Value: parsers.LogicalExpression{
+							Operation: parsers.LogicalExpressionTypeAnd,
+							Expressions: []interface{}{
+								testutils.SelectItem_Path("c", "isCool"),
+								parsers.ComparisonExpression{
+									Operation: ">=",
+									Left:      testutils.SelectItem_Path("c", "age"),
+									Right:     testutils.SelectItem_Constant_Int(18),
+								},
+							},
+						},
+					},
+				},
+				Table: parsers.Table{SelectItem: testutils.SelectItem_Path("c")},
+			},
+			mockData,
+			[]memoryexecutor.RowType{
+				map[string]interface{}{"id": "123", "isCoolAndAdult": false},
+				map[string]interface{}{"id": "456", "isCoolAndAdult": false},
+				map[string]interface{}{"id": "789", "isCoolAndAdult": true},
+			},
+		)
+	})
+}

query_executors/memory_executor/distinct_iterator.go

@@ -0,0 +1,36 @@
+package memoryexecutor
+
+import "github.com/pikami/cosmium/internal/datastore"
+
+type distinctIterator struct {
+	documents rowTypeIterator
+	seenDocs  []RowType
+}
+
+func (di *distinctIterator) Next() (RowType, datastore.DataStoreStatus) {
+	if di.documents == nil {
+		return rowContext{}, datastore.IterEOF
+	}
+
+	for {
+		row, status := di.documents.Next()
+		if status != datastore.StatusOk {
+			di.documents = nil
+			return rowContext{}, status
+		}
+
+		if !di.seen(row) {
+			di.seenDocs = append(di.seenDocs, row)
+			return row, status
+		}
+	}
+}
+
+func (di *distinctIterator) seen(row RowType) bool {
+	for _, seenRow := range di.seenDocs {
+		if compareValues(seenRow, row) == 0 {
+			return true
+		}
+	}
+	return false
+}

query_executors/memory_executor/filter_iterator.go

@@ -0,0 +1,143 @@
+package memoryexecutor
+
+import (
+	"github.com/pikami/cosmium/internal/datastore"
+	"github.com/pikami/cosmium/internal/logger"
+	"github.com/pikami/cosmium/parsers"
+)
+
+type filterIterator struct {
+	documents rowIterator
+	filters   interface{}
+}
+
+func (fi *filterIterator) Next() (rowContext, datastore.DataStoreStatus) {
+	if fi.documents == nil {
+		return rowContext{}, datastore.IterEOF
+	}
+
+	for {
+		row, status := fi.documents.Next()
+		if status != datastore.StatusOk {
+			fi.documents = nil
+			return rowContext{}, status
+		}
+
+		if fi.evaluateFilters(row) {
+			return row, status
+		}
+	}
+}
+
+func (fi *filterIterator) evaluateFilters(row rowContext) bool {
+	if fi.filters == nil {
+		return true
+	}
+
+	switch typedFilters := fi.filters.(type) {
+	case parsers.ComparisonExpression:
+		return row.filters_ComparisonExpression(typedFilters)
+	case parsers.LogicalExpression:
+		return row.filters_LogicalExpression(typedFilters)
+	case parsers.Constant:
+		if value, ok := typedFilters.Value.(bool); ok {
+			return value
+		}
+		return false
+	case parsers.SelectItem:
+		resolvedValue := row.resolveSelectItem(typedFilters)
+		if value, ok := resolvedValue.(bool); ok {
+			if typedFilters.Invert {
+				return !value
+			}
+
+			return value
+		}
+	}
+
+	return false
+}
+
+func (r rowContext) applyFilters(filters interface{}) bool {
+	if filters == nil {
+		return true
+	}
+
+	switch typedFilters := filters.(type) {
+	case parsers.ComparisonExpression:
+		return r.filters_ComparisonExpression(typedFilters)
+	case parsers.LogicalExpression:
+		return r.filters_LogicalExpression(typedFilters)
+	case parsers.Constant:
+		if value, ok := typedFilters.Value.(bool); ok {
+			return value
+		}
+		return false
+	case parsers.SelectItem:
+		resolvedValue := r.resolveSelectItem(typedFilters)
+		if value, ok := resolvedValue.(bool); ok {
+			if typedFilters.Invert {
+				return !value
+			}
+
+			return value
+		}
+	}
+
+	return false
+}
+
+func (r rowContext) filters_ComparisonExpression(expression parsers.ComparisonExpression) bool {
+	leftExpression, leftExpressionOk := expression.Left.(parsers.SelectItem)
+	rightExpression, rightExpressionOk := expression.Right.(parsers.SelectItem)
+
+	if !leftExpressionOk || !rightExpressionOk {
+		logger.ErrorLn("ComparisonExpression has incorrect Left or Right type")
+		return false
+	}
+
+	leftValue := r.resolveSelectItem(leftExpression)
+	rightValue := r.resolveSelectItem(rightExpression)
+
+	cmp := compareValues(leftValue, rightValue)
+	switch expression.Operation {
+	case "=":
+		return cmp == 0
+	case "!=":
+		return cmp != 0
+	case "<":
+		return cmp < 0
+	case ">":
+		return cmp > 0
+	case "<=":
+		return cmp <= 0
+	case ">=":
+		return cmp >= 0
+	}
+
+	return false
+}
+
+func (r rowContext) filters_LogicalExpression(expression parsers.LogicalExpression) bool {
+	var result bool
+	for i, subExpression := range expression.Expressions {
+		expressionResult := r.applyFilters(subExpression)
+		if i == 0 {
+			result = expressionResult
+		}
+
+		switch expression.Operation {
+		case parsers.LogicalExpressionTypeAnd:
+			result = result && expressionResult
+			if !result {
+				return false
+			}
+		case parsers.LogicalExpressionTypeOr:
+			result = result || expressionResult
+			if result {
+				return true
+			}
+		}
+	}
+	return result
+}

query_executors/memory_executor/from_iterator.go

@@ -0,0 +1,73 @@
+package memoryexecutor
+
+import (
+	"github.com/pikami/cosmium/internal/datastore"
+	"github.com/pikami/cosmium/parsers"
+)
+
+type fromIterator struct {
+	documents   rowIterator
+	table       parsers.Table
+	buffer      []rowContext
+	bufferIndex int
+}
+
+func (fi *fromIterator) Next() (rowContext, datastore.DataStoreStatus) {
+	if fi.documents == nil {
+		return rowContext{}, datastore.IterEOF
+	}
+
+	// Return from buffer if available
+	if fi.bufferIndex < len(fi.buffer) {
+		result := fi.buffer[fi.bufferIndex]
+		fi.buffer[fi.bufferIndex] = rowContext{}
+		fi.bufferIndex++
+		return result, datastore.StatusOk
+	}
+
+	// Resolve next row from documents
+	row, status := fi.documents.Next()
+	if status != datastore.StatusOk {
+		fi.documents = nil
+		return row, status
+	}
+
+	if fi.table.SelectItem.Path != nil || fi.table.SelectItem.Type == parsers.SelectItemTypeSubQuery {
+		destinationTableName := fi.table.SelectItem.Alias
+		if destinationTableName == "" {
+			destinationTableName = fi.table.Value
+		}
+		if destinationTableName == "" {
+			destinationTableName = resolveDestinationColumnName(fi.table.SelectItem, 0, row.parameters)
+		}
+
+		if fi.table.IsInSelect || fi.table.SelectItem.Type == parsers.SelectItemTypeSubQuery {
+			selectValue := row.parseArray(fi.table.SelectItem)
+			rowContexts := make([]rowContext, len(selectValue))
+			for i, newRowData := range selectValue {
+				rowContexts[i].parameters = row.parameters
+				rowContexts[i].tables = copyMap(row.tables)
+				rowContexts[i].tables[destinationTableName] = newRowData
+			}
+
+			fi.buffer = rowContexts
+			fi.bufferIndex = 0
+			return fi.Next()
+		}
+
+		if len(fi.table.SelectItem.Path) > 0 {
+			sourceTableName := fi.table.SelectItem.Path[0]
+			sourceTableData := row.tables[sourceTableName]
+			if sourceTableData == nil {
+				// When source table is not found, assume it's root document
+				row.tables[sourceTableName] = row.tables["$root"]
+			}
+		}
+
+		newRowData := row.resolveSelectItem(fi.table.SelectItem)
+		row.tables[destinationTableName] = newRowData
+		return row, status
+	}
+
+	return row, status
+}

query_executors/memory_executor/groupBy_iterator.go

@@ -0,0 +1,69 @@
+package memoryexecutor
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/pikami/cosmium/internal/datastore"
+	"github.com/pikami/cosmium/parsers"
+)
+
+type groupByIterator struct {
+	documents   rowIterator
+	groupBy     []parsers.SelectItem
+	groupedRows []rowContext
+}
+
+func (gi *groupByIterator) Next() (rowContext, datastore.DataStoreStatus) {
+	if gi.groupedRows != nil {
+		if len(gi.groupedRows) == 0 {
+			return rowContext{}, datastore.IterEOF
+		}
+		row := gi.groupedRows[0]
+		gi.groupedRows = gi.groupedRows[1:]
+		return row, datastore.StatusOk
+	}
+
+	documents := make([]rowContext, 0)
+	for {
+		row, status := gi.documents.Next()
+		if status != datastore.StatusOk {
+			break
+		}
+
+		documents = append(documents, row)
+	}
+	gi.documents = nil
+
+	groupedRows := make(map[string][]rowContext)
+	groupedKeys := make([]string, 0)
+
+	for _, row := range documents {
+		key := row.generateGroupByKey(gi.groupBy)
+		if _, ok := groupedRows[key]; !ok {
+			groupedKeys = append(groupedKeys, key)
+		}
+		groupedRows[key] = append(groupedRows[key], row)
+	}
+
+	gi.groupedRows = make([]rowContext, 0)
+	for _, key := range groupedKeys {
+		gi.groupedRows = append(gi.groupedRows, rowContext{
+			tables:       groupedRows[key][0].tables,
+			parameters:   groupedRows[key][0].parameters,
+			grouppedRows: groupedRows[key],
+		})
+	}
+
+	return gi.Next()
+}
+
+func (r rowContext) generateGroupByKey(groupBy []parsers.SelectItem) string {
+	var keyBuilder strings.Builder
+	for _, selectItem := range groupBy {
+		value := r.resolveSelectItem(selectItem)
+		keyBuilder.WriteString(fmt.Sprintf("%v", value))
+		keyBuilder.WriteString(":")
+	}
+	return keyBuilder.String()
+}

query_executors/memory_executor/join_iterator.go

@@ -0,0 +1,62 @@
+package memoryexecutor
+
+import (
+	"github.com/pikami/cosmium/internal/datastore"
+	"github.com/pikami/cosmium/parsers"
+)
+
+type joinIterator struct {
+	documents rowIterator
+	query     parsers.SelectStmt
+	buffer    []rowContext
+}
+
+func (ji *joinIterator) Next() (rowContext, datastore.DataStoreStatus) {
+	if ji.documents == nil {
+		return rowContext{}, datastore.IterEOF
+	}
+
+	if len(ji.buffer) > 0 {
+		row := ji.buffer[0]
+		ji.buffer = ji.buffer[1:]
+		return row, datastore.StatusOk
+	}
+
+	doc, status := ji.documents.Next()
+	if status != datastore.StatusOk {
+		ji.documents = nil
+		return rowContext{}, status
+	}
+
+	ji.buffer = []rowContext{doc}
+	for _, joinItem := range ji.query.JoinItems {
+		nextDocuments := make([]rowContext, 0)
+		for _, row := range ji.buffer {
+			joinedItems := row.resolveJoinItemSelect(joinItem.SelectItem)
+			for _, joinedItem := range joinedItems {
+				tablesCopy := copyMap(row.tables)
+				tablesCopy[joinItem.Table.Value] = joinedItem
+				nextDocuments = append(nextDocuments, rowContext{
+					parameters: row.parameters,
+					tables:     tablesCopy,
+				})
+			}
+		}
+		ji.buffer = nextDocuments
+	}
+
+	return ji.Next()
+}
+
+func (r rowContext) resolveJoinItemSelect(selectItem parsers.SelectItem) []RowType {
+	if selectItem.Path != nil || selectItem.Type == parsers.SelectItemTypeSubQuery {
+		selectValue := r.parseArray(selectItem)
+		documents := make([]RowType, len(selectValue))
+		for i, newRowData := range selectValue {
+			documents[i] = newRowData
+		}
+		return documents
+	}
+
+	return []RowType{}
+}

query_executors/memory_executor/limit_iterator.go

@@ -0,0 +1,19 @@
+package memoryexecutor
+
+import "github.com/pikami/cosmium/internal/datastore"
+
+type limitIterator struct {
+	documents rowTypeIterator
+	limit     int
+	count     int
+}
+
+func (li *limitIterator) Next() (RowType, datastore.DataStoreStatus) {
+	if li.count >= li.limit {
+		li.documents = nil
+		return rowContext{}, datastore.IterEOF
+	}
+
+	li.count++
+	return li.documents.Next()
+}

query_executors/memory_executor/math_functions.go

@@ -605,10 +605,30 @@ func numToInt(ex interface{}) (int, bool) {
 
 func numToFloat64(num interface{}) (float64, bool) {
 	switch val := num.(type) {
-	case float64:
-		return val, true
 	case int:
 		return float64(val), true
+	case int8:
+		return float64(val), true
+	case int16:
+		return float64(val), true
+	case int32:
+		return float64(val), true
+	case int64:
+		return float64(val), true
+	case uint:
+		return float64(val), true
+	case uint8:
+		return float64(val), true
+	case uint16:
+		return float64(val), true
+	case uint32:
+		return float64(val), true
+	case uint64:
+		return float64(val), true
+	case float32:
+		return float64(val), true
+	case float64:
+		return val, true
 	default:
 		return 0, false
 	}

query_executors/memory_executor/memory_executor.go

@@ -1,740 +1,120 @@
 package memoryexecutor
 
 import (
-	"fmt"
-	"reflect"
-	"sort"
-	"strconv"
-	"strings"
-
-	"github.com/pikami/cosmium/internal/logger"
+	"github.com/pikami/cosmium/internal/datastore"
 	"github.com/pikami/cosmium/parsers"
-	"golang.org/x/exp/slices"
 )
 
-type RowType interface{}
-type rowContext struct {
-	tables       map[string]RowType
-	parameters   map[string]interface{}
-	grouppedRows []rowContext
+type ExecuteQueryResult struct {
+	Rows         []RowType
+	HasMorePages bool
 }
 
-func ExecuteQuery(query parsers.SelectStmt, documents []RowType) []RowType {
-	currentDocuments := make([]rowContext, 0)
-	for _, doc := range documents {
-		currentDocuments = append(currentDocuments, resolveFrom(query, doc)...)
+func ExecuteQuery(
+	query parsers.SelectStmt,
+	documents rowTypeIterator,
+	offset int,
+	limit int,
+) ExecuteQueryResult {
+	resultIter := executeQuery(query, &rowTypeToRowContextIterator{documents: documents, query: query})
+
+	result := &ExecuteQueryResult{
+		Rows:         make([]RowType, 0),
+		HasMorePages: false,
 	}
 
-	// Handle JOINS
-	nextDocuments := make([]rowContext, 0)
-	for _, currentDocument := range currentDocuments {
-		rowContexts := currentDocument.handleJoin(query)
-		nextDocuments = append(nextDocuments, rowContexts...)
-	}
-	currentDocuments = nextDocuments
-
-	// Apply filters
-	nextDocuments = make([]rowContext, 0)
-	for _, currentDocument := range currentDocuments {
-		if currentDocument.applyFilters(query.Filters) {
-			nextDocuments = append(nextDocuments, currentDocument)
+	for i := 0; i < offset; i++ {
+		_, status := resultIter.Next()
+		if status != datastore.StatusOk {
+			break
 		}
 	}
-	currentDocuments = nextDocuments
 
-	// Apply order
+	for i := 0; i < limit; i++ {
+		row, status := resultIter.Next()
+		if status != datastore.StatusOk {
+			break
+		}
+
+		result.Rows = append(result.Rows, row)
+	}
+
+	_, status := resultIter.Next()
+	if status == datastore.StatusOk {
+		result.HasMorePages = true
+	}
+
+	return *result
+}
+
+func executeQuery(query parsers.SelectStmt, documents rowIterator) rowTypeIterator {
+	// Resolve FROM
+	var iter rowIterator = &fromIterator{
+		documents: documents,
+		table:     query.Table,
+	}
+
+	// Apply JOIN
+	if len(query.JoinItems) > 0 {
+		iter = &joinIterator{
+			documents: iter,
+			query:     query,
+		}
+	}
+
+	// Apply WHERE
+	if query.Filters != nil {
+		iter = &filterIterator{
+			documents: iter,
+			filters:   query.Filters,
+		}
+	}
+
+	// Apply ORDER BY
 	if len(query.OrderExpressions) > 0 {
-		applyOrder(currentDocuments, query.OrderExpressions)
+		iter = &orderIterator{
+			documents:        iter,
+			orderExpressions: query.OrderExpressions,
+		}
 	}
 
-	// Apply group by
+	// Apply GROUP BY
 	if len(query.GroupBy) > 0 {
-		currentDocuments = applyGroupBy(currentDocuments, query.GroupBy)
+		iter = &groupByIterator{
+			documents: iter,
+			groupBy:   query.GroupBy,
+		}
 	}
 
-	// Apply select
-	projectedDocuments := applyProjection(currentDocuments, query.SelectItems, query.GroupBy)
+	// Apply SELECT
+	var projectedIterator rowTypeIterator = &projectIterator{
+		documents:   iter,
+		selectItems: query.SelectItems,
+		groupBy:     query.GroupBy,
+	}
 
-	// Apply distinct
+	// Apply DISTINCT
 	if query.Distinct {
-		projectedDocuments = deduplicate(projectedDocuments)
+		projectedIterator = &distinctIterator{
+			documents: projectedIterator,
+		}
 	}
 
-	// Apply offset
+	// Apply OFFSET
 	if query.Offset > 0 {
-		if query.Offset < len(projectedDocuments) {
-			projectedDocuments = projectedDocuments[query.Offset:]
-		} else {
-			projectedDocuments = []RowType{}
+		projectedIterator = &offsetIterator{
+			documents: projectedIterator,
+			offset:    query.Offset,
 		}
 	}
 
-	// Apply result limit
-	if query.Count > 0 && len(projectedDocuments) > query.Count {
-		projectedDocuments = projectedDocuments[:query.Count]
+	// Apply LIMIT
+	if query.Count > 0 {
+		projectedIterator = &limitIterator{
+			documents: projectedIterator,
+			limit:     query.Count,
+		}
 	}
 
-	return projectedDocuments
-}
-
-func resolveFrom(query parsers.SelectStmt, doc RowType) []rowContext {
-	initialRow, gotParentContext := doc.(rowContext)
-	if !gotParentContext {
-		var initialTableName string
-		if query.Table.SelectItem.Type == parsers.SelectItemTypeSubQuery {
-			initialTableName = query.Table.SelectItem.Value.(parsers.SelectStmt).Table.Value
-		}
-
-		if initialTableName == "" {
-			initialTableName = query.Table.Value
-		}
-
-		if initialTableName == "" {
-			initialTableName = resolveDestinationColumnName(query.Table.SelectItem, 0, query.Parameters)
-		}
-
-		initialRow = rowContext{
-			parameters: query.Parameters,
-			tables: map[string]RowType{
-				initialTableName: doc,
-				"$root":          doc,
-			},
-		}
-	}
-
-	if query.Table.SelectItem.Path != nil || query.Table.SelectItem.Type == parsers.SelectItemTypeSubQuery {
-		destinationTableName := query.Table.SelectItem.Alias
-		if destinationTableName == "" {
-			destinationTableName = query.Table.Value
-		}
-		if destinationTableName == "" {
-			destinationTableName = resolveDestinationColumnName(query.Table.SelectItem, 0, initialRow.parameters)
-		}
-
-		if query.Table.IsInSelect || query.Table.SelectItem.Type == parsers.SelectItemTypeSubQuery {
-			selectValue := initialRow.parseArray(query.Table.SelectItem)
-			rowContexts := make([]rowContext, len(selectValue))
-			for i, newRowData := range selectValue {
-				rowContexts[i].parameters = initialRow.parameters
-				rowContexts[i].tables = copyMap(initialRow.tables)
-				rowContexts[i].tables[destinationTableName] = newRowData
-			}
-			return rowContexts
-		}
-
-		if len(query.Table.SelectItem.Path) > 0 {
-			sourceTableName := query.Table.SelectItem.Path[0]
-			sourceTableData := initialRow.tables[sourceTableName]
-			if sourceTableData == nil {
-				// When source table is not found, assume it's root document
-				initialRow.tables[sourceTableName] = initialRow.tables["$root"]
-			}
-		}
-
-		newRowData := initialRow.resolveSelectItem(query.Table.SelectItem)
-		initialRow.tables[destinationTableName] = newRowData
-		return []rowContext{initialRow}
-	}
-
-	return []rowContext{initialRow}
-}
-
-func (r rowContext) handleJoin(query parsers.SelectStmt) []rowContext {
-	currentDocuments := []rowContext{r}
-
-	for _, joinItem := range query.JoinItems {
-		nextDocuments := make([]rowContext, 0)
-		for _, currentDocument := range currentDocuments {
-			joinedItems := currentDocument.resolveJoinItemSelect(joinItem.SelectItem)
-			for _, joinedItem := range joinedItems {
-				tablesCopy := copyMap(currentDocument.tables)
-				tablesCopy[joinItem.Table.Value] = joinedItem
-				nextDocuments = append(nextDocuments, rowContext{
-					parameters: currentDocument.parameters,
-					tables:     tablesCopy,
-				})
-			}
-		}
-		currentDocuments = nextDocuments
-	}
-
-	return currentDocuments
-}
-
-func (r rowContext) resolveJoinItemSelect(selectItem parsers.SelectItem) []RowType {
-	if selectItem.Path != nil || selectItem.Type == parsers.SelectItemTypeSubQuery {
-		selectValue := r.parseArray(selectItem)
-		documents := make([]RowType, len(selectValue))
-		for i, newRowData := range selectValue {
-			documents[i] = newRowData
-		}
-		return documents
-	}
-
-	return []RowType{}
-}
-
-func (r rowContext) applyFilters(filters interface{}) bool {
-	if filters == nil {
-		return true
-	}
-
-	switch typedFilters := filters.(type) {
-	case parsers.ComparisonExpression:
-		return r.filters_ComparisonExpression(typedFilters)
-	case parsers.LogicalExpression:
-		return r.filters_LogicalExpression(typedFilters)
-	case parsers.Constant:
-		if value, ok := typedFilters.Value.(bool); ok {
-			return value
-		}
-		return false
-	case parsers.SelectItem:
-		resolvedValue := r.resolveSelectItem(typedFilters)
-		if value, ok := resolvedValue.(bool); ok {
-			return value
-		}
-	}
-
-	return false
-}
-
-func (r rowContext) filters_ComparisonExpression(expression parsers.ComparisonExpression) bool {
-	leftExpression, leftExpressionOk := expression.Left.(parsers.SelectItem)
-	rightExpression, rightExpressionOk := expression.Right.(parsers.SelectItem)
-
-	if !leftExpressionOk || !rightExpressionOk {
-		logger.ErrorLn("ComparisonExpression has incorrect Left or Right type")
-		return false
-	}
-
-	leftValue := r.resolveSelectItem(leftExpression)
-	rightValue := r.resolveSelectItem(rightExpression)
-
-	cmp := compareValues(leftValue, rightValue)
-	switch expression.Operation {
-	case "=":
-		return cmp == 0
-	case "!=":
-		return cmp != 0
-	case "<":
-		return cmp < 0
-	case ">":
-		return cmp > 0
-	case "<=":
-		return cmp <= 0
-	case ">=":
-		return cmp >= 0
-	}
-
-	return false
-}
-
-func (r rowContext) filters_LogicalExpression(expression parsers.LogicalExpression) bool {
-	var result bool
-	for i, subExpression := range expression.Expressions {
-		expressionResult := r.applyFilters(subExpression)
-		if i == 0 {
-			result = expressionResult
-		}
-
-		switch expression.Operation {
-		case parsers.LogicalExpressionTypeAnd:
-			result = result && expressionResult
-			if !result {
-				return false
-			}
-		case parsers.LogicalExpressionTypeOr:
-			result = result || expressionResult
-			if result {
-				return true
-			}
-		}
-	}
-	return result
-}
-
-func applyOrder(documents []rowContext, orderExpressions []parsers.OrderExpression) {
-	less := func(i, j int) bool {
-		for _, order := range orderExpressions {
-			val1 := documents[i].resolveSelectItem(order.SelectItem)
-			val2 := documents[j].resolveSelectItem(order.SelectItem)
-
-			cmp := compareValues(val1, val2)
-			if cmp != 0 {
-				if order.Direction == parsers.OrderDirectionDesc {
-					return cmp > 0
-				}
-				return cmp < 0
-			}
-		}
-		return i < j
-	}
-
-	sort.SliceStable(documents, less)
-}
-
-func applyGroupBy(documents []rowContext, groupBy []parsers.SelectItem) []rowContext {
-	groupedRows := make(map[string][]rowContext)
-	groupedKeys := make([]string, 0)
-
-	for _, row := range documents {
-		key := row.generateGroupByKey(groupBy)
-		if _, ok := groupedRows[key]; !ok {
-			groupedKeys = append(groupedKeys, key)
-		}
-		groupedRows[key] = append(groupedRows[key], row)
-	}
-
-	grouppedRows := make([]rowContext, 0)
-	for _, key := range groupedKeys {
-		grouppedRowContext := rowContext{
-			tables:       groupedRows[key][0].tables,
-			parameters:   groupedRows[key][0].parameters,
-			grouppedRows: groupedRows[key],
-		}
-		grouppedRows = append(grouppedRows, grouppedRowContext)
-	}
-
-	return grouppedRows
-}
-
-func (r rowContext) generateGroupByKey(groupBy []parsers.SelectItem) string {
-	var keyBuilder strings.Builder
-	for _, selectItem := range groupBy {
-		value := r.resolveSelectItem(selectItem)
-		keyBuilder.WriteString(fmt.Sprintf("%v", value))
-		keyBuilder.WriteString(":")
-	}
-	return keyBuilder.String()
-}
-
-func applyProjection(documents []rowContext, selectItems []parsers.SelectItem, groupBy []parsers.SelectItem) []RowType {
-	if len(documents) == 0 {
-		return []RowType{}
-	}
-
-	if hasAggregateFunctions(selectItems) && len(groupBy) == 0 {
-		// When can have aggregate functions without GROUP BY clause,
-		// we should aggregate all rows in that case
-		rowContext := rowContext{
-			tables:       documents[0].tables,
-			parameters:   documents[0].parameters,
-			grouppedRows: documents,
-		}
-		return []RowType{rowContext.applyProjection(selectItems)}
-	}
-
-	projectedDocuments := make([]RowType, len(documents))
-	for index, row := range documents {
-		projectedDocuments[index] = row.applyProjection(selectItems)
-	}
-
-	return projectedDocuments
-}
-
-func (r rowContext) applyProjection(selectItems []parsers.SelectItem) RowType {
-	// When the first value is top level, select it instead
-	if len(selectItems) > 0 && selectItems[0].IsTopLevel {
-		return r.resolveSelectItem(selectItems[0])
-	}
-
-	// Construct a new row based on the selected columns
-	row := make(map[string]interface{})
-	for index, selectItem := range selectItems {
-		destinationName := resolveDestinationColumnName(selectItem, index, r.parameters)
-
-		row[destinationName] = r.resolveSelectItem(selectItem)
-	}
-
-	return row
-}
-
-func resolveDestinationColumnName(selectItem parsers.SelectItem, itemIndex int, queryParameters map[string]interface{}) string {
-	if selectItem.Alias != "" {
-		return selectItem.Alias
-	}
-
-	destinationName := fmt.Sprintf("$%d", itemIndex+1)
-	if len(selectItem.Path) > 0 {
-		destinationName = selectItem.Path[len(selectItem.Path)-1]
-	}
-
-	if destinationName[0] == '@' {
-		destinationName = queryParameters[destinationName].(string)
-	}
-
-	return destinationName
-}
-
-func (r rowContext) resolveSelectItem(selectItem parsers.SelectItem) interface{} {
-	if selectItem.Type == parsers.SelectItemTypeArray {
-		return r.selectItem_SelectItemTypeArray(selectItem)
-	}
-
-	if selectItem.Type == parsers.SelectItemTypeObject {
-		return r.selectItem_SelectItemTypeObject(selectItem)
-	}
-
-	if selectItem.Type == parsers.SelectItemTypeConstant {
-		return r.selectItem_SelectItemTypeConstant(selectItem)
-	}
-
-	if selectItem.Type == parsers.SelectItemTypeSubQuery {
-		return r.selectItem_SelectItemTypeSubQuery(selectItem)
-	}
-
-	if selectItem.Type == parsers.SelectItemTypeFunctionCall {
-		if typedFunctionCall, ok := selectItem.Value.(parsers.FunctionCall); ok {
-			return r.selectItem_SelectItemTypeFunctionCall(typedFunctionCall)
-		}
-
-		logger.ErrorLn("parsers.SelectItem has incorrect Value type (expected parsers.FunctionCall)")
-		return nil
-	}
-
-	return r.selectItem_SelectItemTypeField(selectItem)
-}
-
-func (r rowContext) selectItem_SelectItemTypeArray(selectItem parsers.SelectItem) interface{} {
-	arrayValue := make([]interface{}, 0)
-	for _, subSelectItem := range selectItem.SelectItems {
-		arrayValue = append(arrayValue, r.resolveSelectItem(subSelectItem))
-	}
-	return arrayValue
-}
-
-func (r rowContext) selectItem_SelectItemTypeObject(selectItem parsers.SelectItem) interface{} {
-	objectValue := make(map[string]interface{})
-	for _, subSelectItem := range selectItem.SelectItems {
-		objectValue[subSelectItem.Alias] = r.resolveSelectItem(subSelectItem)
-	}
-	return objectValue
-}
-
-func (r rowContext) selectItem_SelectItemTypeConstant(selectItem parsers.SelectItem) interface{} {
-	var typedValue parsers.Constant
-	var ok bool
-	if typedValue, ok = selectItem.Value.(parsers.Constant); !ok {
-		// TODO: Handle error
-		logger.ErrorLn("parsers.Constant has incorrect Value type")
-	}
-
-	if typedValue.Type == parsers.ConstantTypeParameterConstant &&
-		r.parameters != nil {
-		if key, ok := typedValue.Value.(string); ok {
-			return r.parameters[key]
-		}
-	}
-
-	return typedValue.Value
-}
-
-func (r rowContext) selectItem_SelectItemTypeSubQuery(selectItem parsers.SelectItem) interface{} {
-	subQuery := selectItem.Value.(parsers.SelectStmt)
-	subQueryResult := ExecuteQuery(
-		subQuery,
-		[]RowType{r},
-	)
-
-	if subQuery.Exists {
-		return len(subQueryResult) > 0
-	}
-
-	return subQueryResult
-}
-
-func (r rowContext) selectItem_SelectItemTypeFunctionCall(functionCall parsers.FunctionCall) interface{} {
-	switch functionCall.Type {
-	case parsers.FunctionCallStringEquals:
-		return r.strings_StringEquals(functionCall.Arguments)
-	case parsers.FunctionCallContains:
-		return r.strings_Contains(functionCall.Arguments)
-	case parsers.FunctionCallEndsWith:
-		return r.strings_EndsWith(functionCall.Arguments)
-	case parsers.FunctionCallStartsWith:
-		return r.strings_StartsWith(functionCall.Arguments)
-	case parsers.FunctionCallConcat:
-		return r.strings_Concat(functionCall.Arguments)
-	case parsers.FunctionCallIndexOf:
-		return r.strings_IndexOf(functionCall.Arguments)
-	case parsers.FunctionCallToString:
-		return r.strings_ToString(functionCall.Arguments)
-	case parsers.FunctionCallUpper:
-		return r.strings_Upper(functionCall.Arguments)
-	case parsers.FunctionCallLower:
-		return r.strings_Lower(functionCall.Arguments)
-	case parsers.FunctionCallLeft:
-		return r.strings_Left(functionCall.Arguments)
-	case parsers.FunctionCallLength:
-		return r.strings_Length(functionCall.Arguments)
-	case parsers.FunctionCallLTrim:
-		return r.strings_LTrim(functionCall.Arguments)
-	case parsers.FunctionCallReplace:
-		return r.strings_Replace(functionCall.Arguments)
-	case parsers.FunctionCallReplicate:
-		return r.strings_Replicate(functionCall.Arguments)
-	case parsers.FunctionCallReverse:
-		return r.strings_Reverse(functionCall.Arguments)
-	case parsers.FunctionCallRight:
-		return r.strings_Right(functionCall.Arguments)
-	case parsers.FunctionCallRTrim:
-		return r.strings_RTrim(functionCall.Arguments)
-	case parsers.FunctionCallSubstring:
-		return r.strings_Substring(functionCall.Arguments)
-	case parsers.FunctionCallTrim:
-		return r.strings_Trim(functionCall.Arguments)
-
-	case parsers.FunctionCallIsDefined:
-		return r.typeChecking_IsDefined(functionCall.Arguments)
-	case parsers.FunctionCallIsArray:
-		return r.typeChecking_IsArray(functionCall.Arguments)
-	case parsers.FunctionCallIsBool:
-		return r.typeChecking_IsBool(functionCall.Arguments)
-	case parsers.FunctionCallIsFiniteNumber:
-		return r.typeChecking_IsFiniteNumber(functionCall.Arguments)
-	case parsers.FunctionCallIsInteger:
-		return r.typeChecking_IsInteger(functionCall.Arguments)
-	case parsers.FunctionCallIsNull:
-		return r.typeChecking_IsNull(functionCall.Arguments)
-	case parsers.FunctionCallIsNumber:
-		return r.typeChecking_IsNumber(functionCall.Arguments)
-	case parsers.FunctionCallIsObject:
-		return r.typeChecking_IsObject(functionCall.Arguments)
-	case parsers.FunctionCallIsPrimitive:
-		return r.typeChecking_IsPrimitive(functionCall.Arguments)
-	case parsers.FunctionCallIsString:
-		return r.typeChecking_IsString(functionCall.Arguments)
-
-	case parsers.FunctionCallArrayConcat:
-		return r.array_Concat(functionCall.Arguments)
-	case parsers.FunctionCallArrayContains:
-		return r.array_Contains(functionCall.Arguments)
-	case parsers.FunctionCallArrayContainsAny:
-		return r.array_Contains_Any(functionCall.Arguments)
-	case parsers.FunctionCallArrayContainsAll:
-		return r.array_Contains_All(functionCall.Arguments)
-	case parsers.FunctionCallArrayLength:
-		return r.array_Length(functionCall.Arguments)
-	case parsers.FunctionCallArraySlice:
-		return r.array_Slice(functionCall.Arguments)
-	case parsers.FunctionCallSetIntersect:
-		return r.set_Intersect(functionCall.Arguments)
-	case parsers.FunctionCallSetUnion:
-		return r.set_Union(functionCall.Arguments)
-
-	case parsers.FunctionCallMathAbs:
-		return r.math_Abs(functionCall.Arguments)
-	case parsers.FunctionCallMathAcos:
-		return r.math_Acos(functionCall.Arguments)
-	case parsers.FunctionCallMathAsin:
-		return r.math_Asin(functionCall.Arguments)
-	case parsers.FunctionCallMathAtan:
-		return r.math_Atan(functionCall.Arguments)
-	case parsers.FunctionCallMathCeiling:
-		return r.math_Ceiling(functionCall.Arguments)
-	case parsers.FunctionCallMathCos:
-		return r.math_Cos(functionCall.Arguments)
-	case parsers.FunctionCallMathCot:
-		return r.math_Cot(functionCall.Arguments)
-	case parsers.FunctionCallMathDegrees:
-		return r.math_Degrees(functionCall.Arguments)
-	case parsers.FunctionCallMathExp:
-		return r.math_Exp(functionCall.Arguments)
-	case parsers.FunctionCallMathFloor:
-		return r.math_Floor(functionCall.Arguments)
-	case parsers.FunctionCallMathIntBitNot:
-		return r.math_IntBitNot(functionCall.Arguments)
-	case parsers.FunctionCallMathLog10:
-		return r.math_Log10(functionCall.Arguments)
-	case parsers.FunctionCallMathRadians:
-		return r.math_Radians(functionCall.Arguments)
-	case parsers.FunctionCallMathRound:
-		return r.math_Round(functionCall.Arguments)
-	case parsers.FunctionCallMathSign:
-		return r.math_Sign(functionCall.Arguments)
-	case parsers.FunctionCallMathSin:
-		return r.math_Sin(functionCall.Arguments)
-	case parsers.FunctionCallMathSqrt:
-		return r.math_Sqrt(functionCall.Arguments)
-	case parsers.FunctionCallMathSquare:
-		return r.math_Square(functionCall.Arguments)
-	case parsers.FunctionCallMathTan:
-		return r.math_Tan(functionCall.Arguments)
-	case parsers.FunctionCallMathTrunc:
-		return r.math_Trunc(functionCall.Arguments)
-	case parsers.FunctionCallMathAtn2:
-		return r.math_Atn2(functionCall.Arguments)
-	case parsers.FunctionCallMathIntAdd:
-		return r.math_IntAdd(functionCall.Arguments)
-	case parsers.FunctionCallMathIntBitAnd:
-		return r.math_IntBitAnd(functionCall.Arguments)
-	case parsers.FunctionCallMathIntBitLeftShift:
-		return r.math_IntBitLeftShift(functionCall.Arguments)
-	case parsers.FunctionCallMathIntBitOr:
-		return r.math_IntBitOr(functionCall.Arguments)
-	case parsers.FunctionCallMathIntBitRightShift:
-		return r.math_IntBitRightShift(functionCall.Arguments)
-	case parsers.FunctionCallMathIntBitXor:
-		return r.math_IntBitXor(functionCall.Arguments)
-	case parsers.FunctionCallMathIntDiv:
-		return r.math_IntDiv(functionCall.Arguments)
-	case parsers.FunctionCallMathIntMod:
-		return r.math_IntMod(functionCall.Arguments)
-	case parsers.FunctionCallMathIntMul:
-		return r.math_IntMul(functionCall.Arguments)
-	case parsers.FunctionCallMathIntSub:
-		return r.math_IntSub(functionCall.Arguments)
-	case parsers.FunctionCallMathPower:
-		return r.math_Power(functionCall.Arguments)
-	case parsers.FunctionCallMathLog:
-		return r.math_Log(functionCall.Arguments)
-	case parsers.FunctionCallMathNumberBin:
-		return r.math_NumberBin(functionCall.Arguments)
-	case parsers.FunctionCallMathPi:
-		return r.math_Pi()
-	case parsers.FunctionCallMathRand:
-		return r.math_Rand()
-
-	case parsers.FunctionCallAggregateAvg:
-		return r.aggregate_Avg(functionCall.Arguments)
-	case parsers.FunctionCallAggregateCount:
-		return r.aggregate_Count(functionCall.Arguments)
-	case parsers.FunctionCallAggregateMax:
-		return r.aggregate_Max(functionCall.Arguments)
-	case parsers.FunctionCallAggregateMin:
-		return r.aggregate_Min(functionCall.Arguments)
-	case parsers.FunctionCallAggregateSum:
-		return r.aggregate_Sum(functionCall.Arguments)
-
-	case parsers.FunctionCallIn:
-		return r.misc_In(functionCall.Arguments)
-	}
-
-	logger.Errorf("Unknown function call type: %v", functionCall.Type)
-	return nil
-}
-
-func (r rowContext) selectItem_SelectItemTypeField(selectItem parsers.SelectItem) interface{} {
-	value := r.tables[selectItem.Path[0]]
-
-	if len(selectItem.Path) > 1 {
-		for _, pathSegment := range selectItem.Path[1:] {
-			if pathSegment[0] == '@' {
-				pathSegment = r.parameters[pathSegment].(string)
-			}
-
-			switch nestedValue := value.(type) {
-			case map[string]interface{}:
-				value = nestedValue[pathSegment]
-			case map[string]RowType:
-				value = nestedValue[pathSegment]
-			case []int, []string, []interface{}:
-				slice := reflect.ValueOf(nestedValue)
-				if arrayIndex, err := strconv.Atoi(pathSegment); err == nil && slice.Len() > arrayIndex {
-					value = slice.Index(arrayIndex).Interface()
-				} else {
-					return nil
-				}
-			default:
-				return nil
-			}
-		}
-	}
-
-	return value
-}
-
-func hasAggregateFunctions(selectItems []parsers.SelectItem) bool {
-	if selectItems == nil {
-		return false
-	}
-
-	for _, selectItem := range selectItems {
-		if selectItem.Type == parsers.SelectItemTypeFunctionCall {
-			if typedValue, ok := selectItem.Value.(parsers.FunctionCall); ok && slices.Contains[[]parsers.FunctionCallType](parsers.AggregateFunctions, typedValue.Type) {
-				return true
-			}
-		}
-
-		if hasAggregateFunctions(selectItem.SelectItems) {
-			return true
-		}
-	}
-
-	return false
-}
-
-func compareValues(val1, val2 interface{}) int {
-	if reflect.TypeOf(val1) != reflect.TypeOf(val2) {
-		return 1
-	}
-
-	switch val1 := val1.(type) {
-	case int:
-		val2 := val2.(int)
-		if val1 < val2 {
-			return -1
-		} else if val1 > val2 {
-			return 1
-		}
-		return 0
-	case float64:
-		val2 := val2.(float64)
-		if val1 < val2 {
-			return -1
-		} else if val1 > val2 {
-			return 1
-		}
-		return 0
-	case string:
-		val2 := val2.(string)
-		return strings.Compare(val1, val2)
-	case bool:
-		val2 := val2.(bool)
-		if val1 == val2 {
-			return 0
-		} else if val1 {
-			return 1
-		} else {
-			return -1
-		}
-	// TODO: Add more types
-	default:
-		if reflect.DeepEqual(val1, val2) {
-			return 0
-		}
-		return 1
-	}
-}
-
-func deduplicate[T RowType | interface{}](slice []T) []T {
-	var result []T
-	result = make([]T, 0)
-
-	for i := 0; i < len(slice); i++ {
-		unique := true
-		for j := 0; j < len(result); j++ {
-			if compareValues(slice[i], result[j]) == 0 {
-				unique = false
-				break
-			}
-		}
-
-		if unique {
-			result = append(result, slice[i])
-		}
-	}
-
-	return result
-}
-
-func copyMap[T RowType | []RowType](originalMap map[string]T) map[string]T {
-	targetMap := make(map[string]T)
-
-	for k, v := range originalMap {
-		targetMap[k] = v
-	}
-
-	return targetMap
+	return projectedIterator
 }

query_executors/memory_executor/misc_functions.go

@@ -16,3 +16,16 @@ func (r rowContext) misc_In(arguments []interface{}) bool {
 
 	return false
 }
+
+func (r rowContext) misc_Iif(arguments []interface{}) interface{} {
+	if len(arguments) != 3 {
+		return nil
+	}
+
+	condition := r.resolveSelectItem(arguments[0].(parsers.SelectItem))
+	if condition != nil && condition == true {
+		return r.resolveSelectItem(arguments[1].(parsers.SelectItem))
+	}
+
+	return r.resolveSelectItem(arguments[2].(parsers.SelectItem))
+}

query_executors/memory_executor/misc_test.go

@@ -4,21 +4,44 @@ import (
 	"reflect"
 	"testing"
 
+	"github.com/pikami/cosmium/internal/datastore"
 	"github.com/pikami/cosmium/parsers"
 	memoryexecutor "github.com/pikami/cosmium/query_executors/memory_executor"
 	testutils "github.com/pikami/cosmium/test_utils"
 )
 
+type TestDocumentIterator struct {
+	documents []memoryexecutor.RowType
+	index     int
+}
+
+func NewTestDocumentIterator(documents []memoryexecutor.RowType) *TestDocumentIterator {
+	return &TestDocumentIterator{
+		documents: documents,
+		index:     -1,
+	}
+}
+
+func (i *TestDocumentIterator) Next() (memoryexecutor.RowType, datastore.DataStoreStatus) {
+	i.index++
+	if i.index >= len(i.documents) {
+		return nil, datastore.IterEOF
+	}
+
+	return i.documents[i.index], datastore.StatusOk
+}
+
 func testQueryExecute(
 	t *testing.T,
 	query parsers.SelectStmt,
 	data []memoryexecutor.RowType,
 	expectedData []memoryexecutor.RowType,
 ) {
-	result := memoryexecutor.ExecuteQuery(query, data)
+	iter := NewTestDocumentIterator(data)
+	result := memoryexecutor.ExecuteQuery(query, iter, 0, 1000)
 
-	if !reflect.DeepEqual(result, expectedData) {
-		t.Errorf("execution result does not match expected data.\nExpected: %+v\nGot: %+v", expectedData, result)
+	if !reflect.DeepEqual(result.Rows, expectedData) {
+		t.Errorf("execution result does not match expected data.\nExpected: %+v\nGot: %+v", expectedData, result.Rows)
 	}
 }
 
@@ -126,6 +149,77 @@ func Test_Execute(t *testing.T) {
 		)
 	})
 
+	t.Run("Should execute NOT IN function", func(t *testing.T) {
+		testQueryExecute(
+			t,
+			parsers.SelectStmt{
+				SelectItems: []parsers.SelectItem{
+					{
+						Path: []string{"c", "id"},
+						Type: parsers.SelectItemTypeField,
+					},
+				},
+				Table: parsers.Table{SelectItem: testutils.SelectItem_Path("c")},
+				Filters: parsers.SelectItem{
+					Type:   parsers.SelectItemTypeFunctionCall,
+					Invert: true,
+					Value: parsers.FunctionCall{
+						Type: parsers.FunctionCallIn,
+						Arguments: []interface{}{
+							parsers.SelectItem{
+								Path: []string{"c", "id"},
+								Type: parsers.SelectItemTypeField,
+							},
+							testutils.SelectItem_Constant_String("123"),
+							testutils.SelectItem_Constant_String("456"),
+						},
+					},
+				},
+			},
+			mockData,
+			[]memoryexecutor.RowType{
+				map[string]interface{}{"id": "12345"},
+				map[string]interface{}{"id": "67890"},
+			},
+		)
+	})
+
+	t.Run("Should execute IN function with function call", func(t *testing.T) {
+		testQueryExecute(
+			t,
+			parsers.SelectStmt{
+				SelectItems: []parsers.SelectItem{
+					testutils.SelectItem_Path("c", "id"),
+				},
+				Table: parsers.Table{SelectItem: testutils.SelectItem_Path("c")},
+				Filters: parsers.SelectItem{
+					Type: parsers.SelectItemTypeFunctionCall,
+					Value: parsers.FunctionCall{
+						Type: parsers.FunctionCallIn,
+						Arguments: []interface{}{
+							parsers.SelectItem{
+								Type: parsers.SelectItemTypeFunctionCall,
+								Value: parsers.FunctionCall{
+									Type: parsers.FunctionCallToString,
+									Arguments: []interface{}{
+										testutils.SelectItem_Path("c", "id"),
+									},
+								},
+							},
+							testutils.SelectItem_Constant_String("123"),
+							testutils.SelectItem_Constant_String("456"),
+						},
+					},
+				},
+			},
+			mockData,
+			[]memoryexecutor.RowType{
+				map[string]interface{}{"id": "456"},
+				map[string]interface{}{"id": "123"},
+			},
+		)
+	})
+
 	t.Run("Should execute IN selector", func(t *testing.T) {
 		testQueryExecute(
 			t,
@@ -151,4 +245,35 @@ func Test_Execute(t *testing.T) {
 			},
 		)
 	})
+
+	t.Run("Should execute function IIF()", func(t *testing.T) {
+		testQueryExecute(
+			t,
+			parsers.SelectStmt{
+				SelectItems: []parsers.SelectItem{
+					testutils.SelectItem_Path("c", "id"),
+					{
+						Alias: "coolness",
+						Type:  parsers.SelectItemTypeFunctionCall,
+						Value: parsers.FunctionCall{
+							Type: parsers.FunctionCallIif,
+							Arguments: []interface{}{
+								testutils.SelectItem_Path("c", "isCool"),
+								testutils.SelectItem_Constant_String("real cool"),
+								testutils.SelectItem_Constant_String("not cool"),
+							},
+						},
+					},
+				},
+				Table: parsers.Table{SelectItem: testutils.SelectItem_Path("c")},
+			},
+			mockData,
+			[]memoryexecutor.RowType{
+				map[string]interface{}{"id": "12345", "coolness": "not cool"},
+				map[string]interface{}{"id": "67890", "coolness": "real cool"},
+				map[string]interface{}{"id": "456", "coolness": "real cool"},
+				map[string]interface{}{"id": "123", "coolness": "real cool"},
+			},
+		)
+	})
 }

query_executors/memory_executor/offset_iterator.go

@@ -0,0 +1,22 @@
+package memoryexecutor
+
+import "github.com/pikami/cosmium/internal/datastore"
+
+type offsetIterator struct {
+	documents rowTypeIterator
+	offset    int
+	skipped   bool
+}
+
+func (oi *offsetIterator) Next() (RowType, datastore.DataStoreStatus) {
+	if oi.skipped {
+		return oi.documents.Next()
+	}
+
+	for i := 0; i < oi.offset; i++ {
+		oi.documents.Next()
+	}
+
+	oi.skipped = true
+	return oi.Next()
+}

query_executors/memory_executor/order_iterator.go

@@ -0,0 +1,63 @@
+package memoryexecutor
+
+import (
+	"sort"
+
+	"github.com/pikami/cosmium/internal/datastore"
+	"github.com/pikami/cosmium/parsers"
+)
+
+type orderIterator struct {
+	documents        rowIterator
+	orderExpressions []parsers.OrderExpression
+	orderedDocs      []rowContext
+	docsIndex        int
+}
+
+func (oi *orderIterator) Next() (rowContext, datastore.DataStoreStatus) {
+	if oi.orderedDocs != nil {
+		if oi.docsIndex >= len(oi.orderedDocs) {
+			return rowContext{}, datastore.IterEOF
+		}
+		row := oi.orderedDocs[oi.docsIndex]
+		oi.orderedDocs[oi.docsIndex] = rowContext{}
+		oi.docsIndex++
+		return row, datastore.StatusOk
+	}
+
+	oi.orderedDocs = make([]rowContext, 0)
+	for {
+		row, status := oi.documents.Next()
+		if status != datastore.StatusOk {
+			break
+		}
+
+		oi.orderedDocs = append(oi.orderedDocs, row)
+	}
+	oi.documents = nil
+
+	less := func(i, j int) bool {
+		for _, order := range oi.orderExpressions {
+			val1 := oi.orderedDocs[i].resolveSelectItem(order.SelectItem)
+			val2 := oi.orderedDocs[j].resolveSelectItem(order.SelectItem)
+
+			cmp := compareValues(val1, val2)
+			if cmp != 0 {
+				if order.Direction == parsers.OrderDirectionDesc {
+					return cmp > 0
+				}
+				return cmp < 0
+			}
+		}
+		return i < j
+	}
+
+	sort.SliceStable(oi.orderedDocs, less)
+
+	if len(oi.orderedDocs) == 0 {
+		return rowContext{}, datastore.IterEOF
+	}
+
+	oi.docsIndex = 1
+	return oi.orderedDocs[0], datastore.StatusOk
+}

query_executors/memory_executor/project_iterator.go

@@ -0,0 +1,90 @@
+package memoryexecutor
+
+import (
+	"github.com/pikami/cosmium/internal/datastore"
+	"github.com/pikami/cosmium/parsers"
+	"golang.org/x/exp/slices"
+)
+
+type projectIterator struct {
+	documents   rowIterator
+	selectItems []parsers.SelectItem
+	groupBy     []parsers.SelectItem
+}
+
+func (pi *projectIterator) Next() (RowType, datastore.DataStoreStatus) {
+	if pi.documents == nil {
+		return rowContext{}, datastore.IterEOF
+	}
+
+	row, status := pi.documents.Next()
+	if status != datastore.StatusOk {
+		pi.documents = nil
+		return rowContext{}, status
+	}
+
+	if hasAggregateFunctions(pi.selectItems) && len(pi.groupBy) == 0 {
+		// When can have aggregate functions without GROUP BY clause,
+		// we should aggregate all rows in that case.
+		allDocuments := []rowContext{row}
+		for {
+			row, status := pi.documents.Next()
+			if status != datastore.StatusOk {
+				break
+			}
+
+			allDocuments = append(allDocuments, row)
+		}
+
+		if len(allDocuments) == 0 {
+			return rowContext{}, datastore.IterEOF
+		}
+
+		aggRow := rowContext{
+			tables:       row.tables,
+			parameters:   row.parameters,
+			grouppedRows: allDocuments,
+		}
+
+		return aggRow.applyProjection(pi.selectItems), datastore.StatusOk
+	}
+
+	return row.applyProjection(pi.selectItems), datastore.StatusOk
+}
+
+func (r rowContext) applyProjection(selectItems []parsers.SelectItem) RowType {
+	// When the first value is top level, select it instead
+	if len(selectItems) > 0 && selectItems[0].IsTopLevel {
+		return r.resolveSelectItem(selectItems[0])
+	}
+
+	// Construct a new row based on the selected columns
+	row := make(map[string]interface{})
+	for index, selectItem := range selectItems {
+		destinationName := resolveDestinationColumnName(selectItem, index, r.parameters)
+
+		row[destinationName] = r.resolveSelectItem(selectItem)
+	}
+
+	return row
+}
+
+func hasAggregateFunctions(selectItems []parsers.SelectItem) bool {
+	if selectItems == nil {
+		return false
+	}
+
+	for _, selectItem := range selectItems {
+		if selectItem.Type == parsers.SelectItemTypeFunctionCall {
+			if typedValue, ok := selectItem.Value.(parsers.FunctionCall); ok && slices.Contains[[]parsers.FunctionCallType](parsers.AggregateFunctions, typedValue.Type) {
+				return true
+			}
+		}
+
+		if hasAggregateFunctions(selectItem.SelectItems) {
+			return true
+		}
+	}
+
+	return false
+}