Handle 'NOT IN' statement

* docs(readme): fix docker example to create valid save.json if missing

Prevent runtime errors by initializing save.json with '{}' if the file does not exist before running the container.

Fixes #11

* Update README.md

---------

Co-authored-by: Pijus Kamandulis <pikami@users.noreply.github.com>

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

@@ -12,10 +12,10 @@ jobs:
         uses: actions/checkout@v3
 
       - name: Cross-Compile with xgo
-        uses: crazy-max/ghaction-xgo@v3.1.0
+        uses: crazy-max/ghaction-xgo@e22d3c8b089adba750d5a74738b8e95d96f0c991 # v3.1.0
         with:
           xgo_version: latest
-          go_version: 1.24.0
+          go_version: 1.24.7
           dest: dist
           pkg: sharedlibrary
           prefix: cosmium

.github/workflows/release.yml

@@ -21,13 +21,13 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v5
         with:
-          go-version: 1.24.0
+          go-version: 1.24.7
 
       - name: Cross-Compile with xgo
-        uses: crazy-max/ghaction-xgo@v3.1.0
+        uses: crazy-max/ghaction-xgo@e22d3c8b089adba750d5a74738b8e95d96f0c991 # v3.1.0
         with:
           xgo_version: latest
-          go_version: 1.24.0
+          go_version: 1.24.7
           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=1.24.7
 
 DIST_DIR=dist
 

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/config/config.go

@@ -15,6 +15,11 @@ const (
 	ExplorerBaseUrlLocation = "/_explorer"
 )
 
+const (
+	DataStoreJson   = "json"
+	DataStoreBadger = "badger"
+)
+
 func ParseFlags() ServerConfig {
 	host := flag.String("Host", "localhost", "Hostname")
 	port := flag.Int("Port", 8081, "Listen port")
@@ -28,6 +33,8 @@ 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()))
 
 	flag.Parse()
 	setFlagsFromEnvironment()
@@ -44,6 +51,7 @@ func ParseFlags() ServerConfig {
 	config.DisableTls = *disableTls
 	config.AccountKey = *accountKey
 	config.LogLevel = logLevel.value
+	config.DataStore = dataStore.value
 
 	config.PopulateCalculatedFields()
 
@@ -68,6 +76,24 @@ 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

@@ -17,4 +17,6 @@ type ServerConfig struct {
 	DisableTls              bool   `json:"disableTls"`
 	LogLevel                string `json:"logLevel"`
 	ExplorerBaseUrlLocation string `json:"explorerBaseUrlLocation"`
+
+	DataStore string `json:"dataStore"`
 }

api/handlers/collections.go

@@ -5,6 +5,8 @@ import (
 	"net/http"
 
 	"github.com/gin-gonic/gin"
+	"github.com/pikami/cosmium/api/headers"
+	"github.com/pikami/cosmium/internal/constants"
 	"github.com/pikami/cosmium/internal/datastore"
 )
 
@@ -15,7 +17,7 @@ func (h *Handlers) GetAllCollections(c *gin.Context) {
 	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,
@@ -24,7 +26,7 @@ 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) {
@@ -38,11 +40,11 @@ func (h *Handlers) GetCollection(c *gin.Context) {
 	}
 
 	if status == datastore.StatusNotFound {
-		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
+		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) {
@@ -56,11 +58,11 @@ func (h *Handlers) DeleteCollection(c *gin.Context) {
 	}
 
 	if status == datastore.StatusNotFound {
-		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
+		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) {
@@ -73,13 +75,13 @@ 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.dataStore.CreateCollection(databaseId, newCollection)
 	if status == datastore.Conflict {
-		c.IndentedJSON(http.StatusConflict, gin.H{"message": "Conflict"})
+		c.IndentedJSON(http.StatusConflict, constants.ConflictResponse)
 		return
 	}
 
@@ -88,5 +90,5 @@ func (h *Handlers) CreateCollection(c *gin.Context) {
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }

api/handlers/databases.go

@@ -5,13 +5,15 @@ import (
 	"net/http"
 
 	"github.com/gin-gonic/gin"
+	"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.dataStore.GetAllDatabases()
 	if status == datastore.StatusOk {
-		c.Header("x-ms-item-count", fmt.Sprintf("%d", len(databases)))
+		c.Header(headers.ItemCount, fmt.Sprintf("%d", len(databases)))
 		c.IndentedJSON(http.StatusOK, gin.H{
 			"_rid":      "",
 			"Databases": databases,
@@ -20,7 +22,7 @@ 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) {
@@ -33,11 +35,11 @@ func (h *Handlers) GetDatabase(c *gin.Context) {
 	}
 
 	if status == datastore.StatusNotFound {
-		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
+		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) {
@@ -50,11 +52,11 @@ func (h *Handlers) DeleteDatabase(c *gin.Context) {
 	}
 
 	if status == datastore.StatusNotFound {
-		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
+		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) {
@@ -66,13 +68,13 @@ 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.dataStore.CreateDatabase(newDatabase)
 	if status == datastore.Conflict {
-		c.IndentedJSON(http.StatusConflict, gin.H{"message": "Conflict"})
+		c.IndentedJSON(http.StatusConflict, constants.ConflictResponse)
 		return
 	}
 
@@ -81,5 +83,5 @@ func (h *Handlers) CreateDatabase(c *gin.Context) {
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }

api/handlers/documents.go

@@ -9,6 +9,7 @@ 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"
 	"github.com/pikami/cosmium/internal/converters"
 	"github.com/pikami/cosmium/internal/datastore"
@@ -26,7 +27,7 @@ func (h *Handlers) GetAllDocuments(c *gin.Context) {
 	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,
@@ -35,7 +36,7 @@ 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) {
@@ -50,11 +51,11 @@ func (h *Handlers) GetDocument(c *gin.Context) {
 	}
 
 	if status == datastore.StatusNotFound {
-		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
+		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) {
@@ -69,11 +70,11 @@ func (h *Handlers) DeleteDocument(c *gin.Context) {
 	}
 
 	if status == datastore.StatusNotFound {
-		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
+		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 data store
@@ -90,13 +91,13 @@ func (h *Handlers) ReplaceDocument(c *gin.Context) {
 
 	status := h.dataStore.DeleteDocument(databaseId, collectionId, documentId)
 	if status == datastore.StatusNotFound {
-		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
+		c.IndentedJSON(http.StatusNotFound, constants.NotFoundResponse)
 		return
 	}
 
 	createdDocument, status := h.dataStore.CreateDocument(databaseId, collectionId, requestBody)
 	if status == datastore.Conflict {
-		c.IndentedJSON(http.StatusConflict, gin.H{"message": "Conflict"})
+		c.IndentedJSON(http.StatusConflict, constants.ConflictResponse)
 		return
 	}
 
@@ -105,7 +106,7 @@ func (h *Handlers) ReplaceDocument(c *gin.Context) {
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }
 
 func (h *Handlers) PatchDocument(c *gin.Context) {
@@ -115,7 +116,7 @@ func (h *Handlers) PatchDocument(c *gin.Context) {
 
 	document, status := h.dataStore.GetDocument(databaseId, collectionId, documentId)
 	if status == datastore.StatusNotFound {
-		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
+		c.IndentedJSON(http.StatusNotFound, constants.NotFoundResponse)
 		return
 	}
 
@@ -166,13 +167,13 @@ func (h *Handlers) PatchDocument(c *gin.Context) {
 
 	status = h.dataStore.DeleteDocument(databaseId, collectionId, documentId)
 	if status == datastore.StatusNotFound {
-		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
+		c.IndentedJSON(http.StatusNotFound, constants.NotFoundResponse)
 		return
 	}
 
 	createdDocument, status := h.dataStore.CreateDocument(databaseId, collectionId, modifiedDocument)
 	if status == datastore.Conflict {
-		c.IndentedJSON(http.StatusConflict, gin.H{"message": "Conflict"})
+		c.IndentedJSON(http.StatusConflict, constants.ConflictResponse)
 		return
 	}
 
@@ -181,7 +182,7 @@ func (h *Handlers) PatchDocument(c *gin.Context) {
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }
 
 func (h *Handlers) DocumentsPost(c *gin.Context) {
@@ -189,7 +190,7 @@ 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
@@ -201,25 +202,34 @@ func (h *Handlers) DocumentsPost(c *gin.Context) {
 		return
 	}
 
-	query := requestBody["query"]
+	// Handle query plan requests
-	if query != nil {
+	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.dataStore.DeleteDocument(databaseId, collectionId, requestBody["id"].(string))
 	}
 
 	createdDocument, status := h.dataStore.CreateDocument(databaseId, collectionId, requestBody)
 	if status == datastore.Conflict {
-		c.IndentedJSON(http.StatusConflict, gin.H{"message": "Conflict"})
+		c.IndentedJSON(http.StatusConflict, constants.ConflictResponse)
 		return
 	}
 
@@ -228,7 +238,7 @@ func (h *Handlers) DocumentsPost(c *gin.Context) {
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }
 
 func parametersToMap(pairs []interface{}) map[string]interface{} {
@@ -247,11 +257,6 @@ 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)
@@ -266,7 +271,7 @@ func (h *Handlers) handleDocumentQuery(c *gin.Context, requestBody map[string]in
 	}
 
 	collection, _ := h.dataStore.GetCollection(databaseId, collectionId)
-	c.Header("x-ms-item-count", fmt.Sprintf("%d", len(docs)))
+	c.Header(headers.ItemCount, fmt.Sprintf("%d", len(docs)))
 	c.IndentedJSON(http.StatusOK, gin.H{
 		"_rid":      collection.ResourceID,
 		"Documents": docs,
@@ -383,6 +388,7 @@ func (h *Handlers) executeQueryDocuments(databaseId string, collectionId string,
 	if status != datastore.StatusOk {
 		return nil, status
 	}
+	defer allDocumentsIterator.Close()
 
 	rowsIterator := converters.NewDocumentToRowTypeIterator(allDocumentsIterator)
 

api/handlers/middleware/authentication.go

@@ -6,6 +6,7 @@ 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"
 )
@@ -22,8 +23,8 @@ func Authentication(config *config.ServerConfig) gin.HandlerFunc {
 		resourceType := urlToResourceType(requestUrl)
 		resourceId := requestToResourceId(c)
 
-		authHeader := c.Request.Header.Get("authorization")
+		authHeader := c.Request.Header.Get(headers.Authorization)
-		date := c.Request.Header.Get("x-ms-date")
+		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/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

@@ -5,6 +5,8 @@ import (
 	"net/http"
 
 	"github.com/gin-gonic/gin"
+	"github.com/pikami/cosmium/api/headers"
+	"github.com/pikami/cosmium/internal/constants"
 	"github.com/pikami/cosmium/internal/datastore"
 	"github.com/pikami/cosmium/internal/resourceid"
 )
@@ -13,18 +15,18 @@ 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.dataStore.GetPartitionKeyRanges(databaseId, collectionId)
 	if status == datastore.StatusOk {
-		c.Header("etag", "\"420\"")
+		c.Header(headers.ETag, "\"420\"")
-		c.Header("lsn", "420")
+		c.Header(headers.LSN, "420")
-		c.Header("x-ms-cosmos-llsn", "420")
+		c.Header(headers.CosmosLsn, "420")
-		c.Header("x-ms-global-committed-lsn", "420")
+		c.Header(headers.GlobalCommittedLsn, "420")
-		c.Header("x-ms-item-count", fmt.Sprintf("%d", len(partitionKeyRanges)))
+		c.Header(headers.ItemCount, fmt.Sprintf("%d", len(partitionKeyRanges)))
 
 		collectionRid := collectionId
 		collection, _ := h.dataStore.GetCollection(databaseId, collectionId)
@@ -42,9 +44,9 @@ func (h *Handlers) GetPartitionKeyRanges(c *gin.Context) {
 	}
 
 	if status == datastore.StatusNotFound {
-		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
+		c.IndentedJSON(http.StatusNotFound, constants.NotFoundResponse)
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }

api/handlers/stored_procedures.go

@@ -5,6 +5,8 @@ import (
 	"net/http"
 
 	"github.com/gin-gonic/gin"
+	"github.com/pikami/cosmium/api/headers"
+	"github.com/pikami/cosmium/internal/constants"
 	"github.com/pikami/cosmium/internal/datastore"
 )
 
@@ -15,12 +17,12 @@ func (h *Handlers) GetAllStoredProcedures(c *gin.Context) {
 	sps, status := h.dataStore.GetAllStoredProcedures(databaseId, collectionId)
 
 	if status == datastore.StatusOk {
-		c.Header("x-ms-item-count", fmt.Sprintf("%d", len(sps)))
+		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) {
@@ -36,11 +38,11 @@ func (h *Handlers) GetStoredProcedure(c *gin.Context) {
 	}
 
 	if status == datastore.StatusNotFound {
-		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
+		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) {
@@ -55,11 +57,11 @@ func (h *Handlers) DeleteStoredProcedure(c *gin.Context) {
 	}
 
 	if status == datastore.StatusNotFound {
-		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
+		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) {
@@ -69,19 +71,19 @@ func (h *Handlers) ReplaceStoredProcedure(c *gin.Context) {
 
 	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.dataStore.DeleteStoredProcedure(databaseId, collectionId, spId)
 	if status == datastore.StatusNotFound {
-		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
+		c.IndentedJSON(http.StatusNotFound, constants.NotFoundResponse)
 		return
 	}
 
 	createdSP, status := h.dataStore.CreateStoredProcedure(databaseId, collectionId, sp)
 	if status == datastore.Conflict {
-		c.IndentedJSON(http.StatusConflict, gin.H{"message": "Conflict"})
+		c.IndentedJSON(http.StatusConflict, constants.ConflictResponse)
 		return
 	}
 
@@ -90,7 +92,7 @@ func (h *Handlers) ReplaceStoredProcedure(c *gin.Context) {
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }
 
 func (h *Handlers) CreateStoredProcedure(c *gin.Context) {
@@ -99,13 +101,13 @@ func (h *Handlers) CreateStoredProcedure(c *gin.Context) {
 
 	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.dataStore.CreateStoredProcedure(databaseId, collectionId, sp)
 	if status == datastore.Conflict {
-		c.IndentedJSON(http.StatusConflict, gin.H{"message": "Conflict"})
+		c.IndentedJSON(http.StatusConflict, constants.ConflictResponse)
 		return
 	}
 
@@ -114,5 +116,5 @@ func (h *Handlers) CreateStoredProcedure(c *gin.Context) {
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }

api/handlers/triggers.go

@@ -5,6 +5,8 @@ import (
 	"net/http"
 
 	"github.com/gin-gonic/gin"
+	"github.com/pikami/cosmium/api/headers"
+	"github.com/pikami/cosmium/internal/constants"
 	"github.com/pikami/cosmium/internal/datastore"
 )
 
@@ -15,12 +17,12 @@ func (h *Handlers) GetAllTriggers(c *gin.Context) {
 	triggers, status := h.dataStore.GetAllTriggers(databaseId, collectionId)
 
 	if status == datastore.StatusOk {
-		c.Header("x-ms-item-count", fmt.Sprintf("%d", len(triggers)))
+		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) {
@@ -36,11 +38,11 @@ func (h *Handlers) GetTrigger(c *gin.Context) {
 	}
 
 	if status == datastore.StatusNotFound {
-		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
+		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) {
@@ -55,11 +57,11 @@ func (h *Handlers) DeleteTrigger(c *gin.Context) {
 	}
 
 	if status == datastore.StatusNotFound {
-		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
+		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) {
@@ -69,19 +71,19 @@ func (h *Handlers) ReplaceTrigger(c *gin.Context) {
 
 	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.dataStore.DeleteTrigger(databaseId, collectionId, triggerId)
 	if status == datastore.StatusNotFound {
-		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
+		c.IndentedJSON(http.StatusNotFound, constants.NotFoundResponse)
 		return
 	}
 
 	createdTrigger, status := h.dataStore.CreateTrigger(databaseId, collectionId, trigger)
 	if status == datastore.Conflict {
-		c.IndentedJSON(http.StatusConflict, gin.H{"message": "Conflict"})
+		c.IndentedJSON(http.StatusConflict, constants.ConflictResponse)
 		return
 	}
 
@@ -90,7 +92,7 @@ func (h *Handlers) ReplaceTrigger(c *gin.Context) {
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }
 
 func (h *Handlers) CreateTrigger(c *gin.Context) {
@@ -99,13 +101,13 @@ func (h *Handlers) CreateTrigger(c *gin.Context) {
 
 	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.dataStore.CreateTrigger(databaseId, collectionId, trigger)
 	if status == datastore.Conflict {
-		c.IndentedJSON(http.StatusConflict, gin.H{"message": "Conflict"})
+		c.IndentedJSON(http.StatusConflict, constants.ConflictResponse)
 		return
 	}
 
@@ -114,5 +116,5 @@ func (h *Handlers) CreateTrigger(c *gin.Context) {
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }

api/handlers/user_defined_functions.go

@@ -5,6 +5,8 @@ import (
 	"net/http"
 
 	"github.com/gin-gonic/gin"
+	"github.com/pikami/cosmium/api/headers"
+	"github.com/pikami/cosmium/internal/constants"
 	"github.com/pikami/cosmium/internal/datastore"
 )
 
@@ -15,12 +17,12 @@ func (h *Handlers) GetAllUserDefinedFunctions(c *gin.Context) {
 	udfs, status := h.dataStore.GetAllUserDefinedFunctions(databaseId, collectionId)
 
 	if status == datastore.StatusOk {
-		c.Header("x-ms-item-count", fmt.Sprintf("%d", len(udfs)))
+		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) {
@@ -36,11 +38,11 @@ func (h *Handlers) GetUserDefinedFunction(c *gin.Context) {
 	}
 
 	if status == datastore.StatusNotFound {
-		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
+		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) {
@@ -55,11 +57,11 @@ func (h *Handlers) DeleteUserDefinedFunction(c *gin.Context) {
 	}
 
 	if status == datastore.StatusNotFound {
-		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
+		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) {
@@ -69,19 +71,19 @@ func (h *Handlers) ReplaceUserDefinedFunction(c *gin.Context) {
 
 	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.dataStore.DeleteUserDefinedFunction(databaseId, collectionId, udfId)
 	if status == datastore.StatusNotFound {
-		c.IndentedJSON(http.StatusNotFound, gin.H{"message": "NotFound"})
+		c.IndentedJSON(http.StatusNotFound, constants.NotFoundResponse)
 		return
 	}
 
 	createdUdf, status := h.dataStore.CreateUserDefinedFunction(databaseId, collectionId, udf)
 	if status == datastore.Conflict {
-		c.IndentedJSON(http.StatusConflict, gin.H{"message": "Conflict"})
+		c.IndentedJSON(http.StatusConflict, constants.ConflictResponse)
 		return
 	}
 
@@ -90,7 +92,7 @@ func (h *Handlers) ReplaceUserDefinedFunction(c *gin.Context) {
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }
 
 func (h *Handlers) CreateUserDefinedFunction(c *gin.Context) {
@@ -99,13 +101,13 @@ func (h *Handlers) CreateUserDefinedFunction(c *gin.Context) {
 
 	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.dataStore.CreateUserDefinedFunction(databaseId, collectionId, udf)
 	if status == datastore.Conflict {
-		c.IndentedJSON(http.StatusConflict, gin.H{"message": "Conflict"})
+		c.IndentedJSON(http.StatusConflict, constants.ConflictResponse)
 		return
 	}
 
@@ -114,5 +116,5 @@ func (h *Handlers) CreateUserDefinedFunction(c *gin.Context) {
 		return
 	}
 
-	c.IndentedJSON(http.StatusInternalServerError, gin.H{"message": "Unknown error"})
+	c.IndentedJSON(http.StatusInternalServerError, constants.UnknownErrorResponse)
 }

api/headers/headers.go

@@ -0,0 +1,20 @@
+package headers
+
+const (
+	AIM                = "A-Im"
+	Authorization      = "authorization"
+	CosmosLsn          = "x-ms-cosmos-llsn"
+	ETag               = "etag"
+	GlobalCommittedLsn = "x-ms-global-committed-lsn"
+	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"
+
+	// 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
+)

api/tests/authentication_test.go

@@ -19,7 +19,7 @@ func Test_Authentication(t *testing.T) {
 	t.Run("Should get 200 when correct account key is used", func(t *testing.T) {
 		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)
@@ -35,7 +35,7 @@ func Test_Authentication(t *testing.T) {
 	t.Run("Should get 401 when wrong account key is used", func(t *testing.T) {
 		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)
@@ -72,7 +72,7 @@ func Test_Authentication_Disabled(t *testing.T) {
 	t.Run("Should get 200 when wrong account key is used, but authentication is dissabled", func(t *testing.T) {
 		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)
@@ -85,3 +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"
 	"github.com/pikami/cosmium/internal/datastore"
 	"github.com/stretchr/testify/assert"
 )
 
 func Test_Collections(t *testing.T) {
-	ts := runTestServer()
+	presets := []testPreset{PresetJsonStore, PresetBadgerStore}
-	defer ts.Server.Close()
-
-	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)
 
-	t.Run("Collection Create", func(t *testing.T) {
+		return databaseClient
+	}
+
+	runTestsWithPresets(t, "Collection Create", presets, func(t *testing.T, ts *TestServer, client *azcosmos.Client) {
+		databaseClient := setUp(ts, client)
+
 		t.Run("Should create collection", func(t *testing.T) {
 			createResponse, err := databaseClient.CreateContainer(context.TODO(), azcosmos.ContainerProperties{
 				ID: testCollectionName,
@@ -57,7 +54,9 @@ 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.DataStore.CreateCollection(testDatabaseName, datastore.Collection{
 				ID: testCollectionName,
@@ -90,7 +89,9 @@ 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.DataStore.CreateCollection(testDatabaseName, datastore.Collection{
 				ID: testCollectionName,
@@ -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

@@ -1,13 +1,18 @@
 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"
-	mapdatastore "github.com/pikami/cosmium/internal/datastore/map_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/stretchr/testify/assert"
 )
 
 type TestServer struct {
@@ -16,14 +21,29 @@ type TestServer struct {
 	URL       string
 }
 
-func runTestServerCustomConfig(config *config.ServerConfig) *TestServer {
+func getDefaultTestServerConfig() *config.ServerConfig {
-	dataStore := mapdatastore.NewMapDataStore(mapdatastore.MapDataStoreOptions{})
+	return &config.ServerConfig{
+		AccountKey:              config.DefaultAccountKey,
+		ExplorerPath:            "/tmp/nothing",
+		ExplorerBaseUrlLocation: config.ExplorerBaseUrlLocation,
+		DataStore:               "json",
+	}
+}
 
-	api := api.NewApiServer(dataStore, 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())
 
-	config.DatabaseEndpoint = server.URL
+	configuration.DatabaseEndpoint = server.URL
 
 	return &TestServer{
 		Server:    server,
@@ -33,11 +53,7 @@ func runTestServerCustomConfig(config *config.ServerConfig) *TestServer {
 }
 
 func runTestServer() *TestServer {
-	config := &config.ServerConfig{
+	config := getDefaultTestServerConfig()
-		AccountKey:              config.DefaultAccountKey,
-		ExplorerPath:            "/tmp/nothing",
-		ExplorerBaseUrlLocation: config.ExplorerBaseUrlLocation,
-	}
 
 	config.LogLevel = "debug"
 	logger.SetLogLevel(logger.LogLevelDebug)
@@ -50,3 +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

@@ -3,28 +3,19 @@ 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"
 	"github.com/pikami/cosmium/internal/datastore"
 	"github.com/stretchr/testify/assert"
 )
 
 func Test_Databases(t *testing.T) {
-	ts := runTestServer()
+	presets := []testPreset{PresetJsonStore, PresetBadgerStore}
-	defer ts.Server.Close()
 
-	client, err := azcosmos.NewClientFromConnectionString(
+	runTestsWithPresets(t, "Database Create", presets, func(t *testing.T, ts *TestServer, client *azcosmos.Client) {
-		fmt.Sprintf("AccountEndpoint=%s;AccountKey=%s", ts.URL, config.DefaultAccountKey),
-		&azcosmos.ClientOptions{},
-	)
-	assert.Nil(t, err)
-
-	t.Run("Database Create", func(t *testing.T) {
 		t.Run("Should create database", func(t *testing.T) {
 			ts.DataStore.DeleteDatabase(testDatabaseName)
 
@@ -55,7 +46,7 @@ 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.DataStore.CreateDatabase(datastore.Database{
 				ID: testDatabaseName,
@@ -88,7 +79,7 @@ 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.DataStore.CreateDatabase(datastore.Database{
 				ID: testDatabaseName,
@@ -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_test.go

@@ -53,9 +53,7 @@ func testCosmosQuery(t *testing.T,
 	}
 }
 
-func documents_InitializeDb(t *testing.T) (*TestServer, *azcosmos.ContainerClient) {
+func documents_InitializeDb(t *testing.T, ts *TestServer) *azcosmos.ContainerClient {
-	ts := runTestServer()
-
 	ts.DataStore.CreateDatabase(datastore.Database{ID: testDatabaseName})
 	ts.DataStore.CreateCollection(testDatabaseName, datastore.Collection{
 		ID: testCollectionName,
@@ -79,12 +77,14 @@ func documents_InitializeDb(t *testing.T) (*TestServer, *azcosmos.ContainerClien
 	collectionClient, err := client.NewContainer(testDatabaseName, testCollectionName)
 	assert.Nil(t, err)
 
-	return ts, collectionClient
+	return collectionClient
 }
 
 func Test_Documents(t *testing.T) {
-	ts, collectionClient := documents_InitializeDb(t)
+	presets := []testPreset{PresetJsonStore, PresetBadgerStore}
-	defer ts.Server.Close()
+
+	runTestsWithPresets(t, "Test_Documents", presets, func(t *testing.T, ts *TestServer, client *azcosmos.Client) {
+		collectionClient := documents_InitializeDb(t, ts)
 
 		t.Run("Should query document", func(t *testing.T) {
 			testCosmosQuery(t, collectionClient,
@@ -227,11 +227,10 @@ func Test_Documents(t *testing.T) {
 				}
 			}
 		})
-}
+	})
 
-func Test_Documents_Patch(t *testing.T) {
+	runTestsWithPresets(t, "Test_Documents_Patch", presets, func(t *testing.T, ts *TestServer, client *azcosmos.Client) {
-	ts, collectionClient := documents_InitializeDb(t)
+		collectionClient := documents_InitializeDb(t, ts)
-	defer ts.Server.Close()
 
 		t.Run("Should PATCH document", func(t *testing.T) {
 			context := context.TODO()
@@ -377,11 +376,10 @@ func Test_Documents_Patch(t *testing.T) {
 			assert.NotNil(t, r)
 			assert.Nil(t, err2)
 		})
-}
+	})
 
-func Test_Documents_TransactionalBatch(t *testing.T) {
+	runTestsWithPresets(t, "Test_Documents_TransactionalBatch", presets, func(t *testing.T, ts *TestServer, client *azcosmos.Client) {
-	ts, collectionClient := documents_InitializeDb(t)
+		collectionClient := documents_InitializeDb(t, ts)
-	defer ts.Server.Close()
 
 		t.Run("Should execute CREATE transactional batch", func(t *testing.T) {
 			context := context.TODO()
@@ -427,7 +425,7 @@ func Test_Documents_TransactionalBatch(t *testing.T) {
 			assert.Equal(t, int32(http.StatusNoContent), operationResponse.StatusCode)
 
 			_, status := ts.DataStore.GetDocument(testDatabaseName, testCollectionName, "12345")
-		assert.Equal(t, datastore.StatusNotFound, int(status))
+			assert.Equal(t, datastore.StatusNotFound, status)
 		})
 
 		t.Run("Should execute REPLACE transactional batch", func(t *testing.T) {
@@ -513,4 +511,5 @@ func Test_Documents_TransactionalBatch(t *testing.T) {
 			json.Unmarshal(operationResponse.ResourceBody, &itemResponseBody)
 			assert.Equal(t, "67890", itemResponseBody["id"])
 		})
+	})
 }

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(headers.XDate, date)
-		req.Header.Add("authorization", "sig="+url.QueryEscape(signature))
+		req.Header.Add(headers.Authorization, "sig="+url.QueryEscape(signature))
 		res, err := httpClient.Do(req)
 
 		assert.Nil(t, err)

cmd/server/server.go

@@ -8,16 +8,29 @@ import (
 	"github.com/pikami/cosmium/api"
 	"github.com/pikami/cosmium/api/config"
 	"github.com/pikami/cosmium/internal/datastore"
-	mapdatastore "github.com/pikami/cosmium/internal/datastore/map_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"
 )
 
 func main() {
 	configuration := config.ParseFlags()
 
-	var dataStore datastore.DataStore = mapdatastore.NewMapDataStore(mapdatastore.MapDataStoreOptions{
+	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(dataStore, &configuration)
 	err := server.Start()
@@ -25,10 +38,10 @@ func main() {
 		panic(err)
 	}
 
-	waitForExit(server, dataStore, configuration)
+	waitForExit(server, dataStore)
 }
 
-func waitForExit(server *api.ApiServer, dataStore datastore.DataStore, config config.ServerConfig) {
+func waitForExit(server *api.ApiServer, dataStore datastore.DataStore) {
 	sigs := make(chan os.Signal, 1)
 	signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
 

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 +1,67 @@
 module github.com/pikami/cosmium
 
-go 1.24.0
+go 1.24.7
 
 require (
-	github.com/Azure/azure-sdk-for-go/sdk/azcore v1.17.0
+	github.com/Azure/azure-sdk-for-go/sdk/azcore v1.19.1
-	github.com/Azure/azure-sdk-for-go/sdk/data/azcosmos v1.3.0
+	github.com/Azure/azure-sdk-for-go/sdk/data/azcosmos v1.4.1
-	github.com/cosmiumdev/json-patch/v5 v5.9.3
+	github.com/cosmiumdev/json-patch/v5 v5.9.11
-	github.com/gin-gonic/gin v1.10.0
+	github.com/dgraph-io/badger/v4 v4.8.0
+	github.com/gin-gonic/gin v1.11.0
 	github.com/google/uuid v1.6.0
-	github.com/stretchr/testify v1.10.0
+	github.com/stretchr/testify v1.11.1
-	golang.org/x/exp v0.0.0-20250218142911-aa4b98e5adaa
+	github.com/vmihailenco/msgpack/v5 v5.4.1
+	golang.org/x/exp v0.0.0-20251002181428-27f1f14c8bb9
 )
 
 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/Azure/azure-sdk-for-go/sdk/internal v1.11.2 // indirect
-	github.com/bytedance/sonic v1.12.9 // indirect
+	github.com/bytedance/gopkg v0.1.3 // indirect
-	github.com/bytedance/sonic/loader v0.2.3 // indirect
+	github.com/bytedance/sonic v1.14.1 // indirect
-	github.com/cloudwego/base64x v0.1.5 // indirect
+	github.com/bytedance/sonic/loader v0.3.0 // indirect
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
+	github.com/cloudwego/base64x v0.1.6 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/gabriel-vasile/mimetype v1.4.8 // indirect
+	github.com/dgraph-io/ristretto/v2 v2.3.0 // indirect
-	github.com/gin-contrib/sse v1.0.0 // indirect
+	github.com/dustin/go-humanize v1.0.1 // indirect
+	github.com/gabriel-vasile/mimetype v1.4.10 // indirect
+	github.com/gin-contrib/sse v1.1.0 // 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/go-playground/validator/v10 v10.28.0 // indirect
 	github.com/goccy/go-json v0.10.5 // indirect
+	github.com/goccy/go-yaml v1.18.0 // indirect
+	github.com/google/flatbuffers v25.9.23+incompatible // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
-	github.com/klauspost/cpuid/v2 v2.2.10 // indirect
+	github.com/klauspost/compress v1.18.0 // 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/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/pelletier/go-toml/v2 v2.2.4 // indirect
-	github.com/pkg/errors v0.9.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/quic-go/qpack v0.5.1 // indirect
+	github.com/quic-go/quic-go v0.55.0 // indirect
 	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
-	github.com/ugorji/go/codec v1.2.12 // indirect
+	github.com/ugorji/go/codec v1.3.0 // indirect
-	golang.org/x/arch v0.14.0 // indirect
+	github.com/vmihailenco/tagparser/v2 v2.0.0 // indirect
-	golang.org/x/crypto v0.35.0 // indirect
+	go.opentelemetry.io/auto/sdk v1.2.1 // indirect
-	golang.org/x/net v0.35.0 // indirect
+	go.opentelemetry.io/otel v1.38.0 // indirect
-	golang.org/x/sys v0.30.0 // indirect
+	go.opentelemetry.io/otel/metric v1.38.0 // indirect
-	golang.org/x/text v0.22.0 // indirect
+	go.opentelemetry.io/otel/trace v1.38.0 // indirect
-	google.golang.org/protobuf v1.36.5 // indirect
+	go.uber.org/mock v0.6.0 // indirect
+	golang.org/x/arch v0.22.0 // indirect
+	golang.org/x/crypto v0.43.0 // indirect
+	golang.org/x/mod v0.29.0 // indirect
+	golang.org/x/net v0.45.0 // indirect
+	golang.org/x/sync v0.17.0 // indirect
+	golang.org/x/sys v0.37.0 // indirect
+	golang.org/x/text v0.30.0 // indirect
+	golang.org/x/tools v0.37.0 // indirect
+	google.golang.org/protobuf v1.36.10 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -1,57 +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 v1.17.0 h1:g0EZJwz7xkXQiZAI5xi9f3WWFYBlX1CPTrR+NDToRkQ=
+github.com/Azure/azure-sdk-for-go/sdk/azcore v1.19.1 h1:5YTBM8QDVIBN3sxBil89WfdAAqDZbyJTgh688DSxX5w=
-github.com/Azure/azure-sdk-for-go/sdk/azcore v1.17.0/go.mod h1:XCW7KnZet0Opnr7HccfUw1PLc4CjHqpcaxW8DHklNkQ=
+github.com/Azure/azure-sdk-for-go/sdk/azcore v1.19.1/go.mod h1:YD5h/ldMsG0XiIw7PdyNhLxaM317eFh5yNLccNfGdyw=
-github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.8.0 h1:B/dfvscEQtew9dVuoxqxrUKKv8Ih2f55PydknDamU+g=
+github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.10.1 h1:B+blDbyVIG3WaikNxPnhPiJ1MThR03b3vKGtER95TP4=
-github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.8.0/go.mod h1:fiPSssYvltE08HJchL04dOy+RD4hgrjph0cwGGMntdI=
+github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.10.1/go.mod h1:JdM5psgjfBf5fo2uWOZhflPWyDBZ/O/CNAH9CtsuZE4=
-github.com/Azure/azure-sdk-for-go/sdk/data/azcosmos v1.3.0 h1:RGcdpSElvcXCwxydI0xzOBu1Gvp88OoiTGfbtO/z1m0=
+github.com/Azure/azure-sdk-for-go/sdk/data/azcosmos v1.4.1 h1:ToPLhnXvatKVN4ZkcxLOwcXOJhdu4iQl8w0efeuDz9Y=
-github.com/Azure/azure-sdk-for-go/sdk/data/azcosmos v1.3.0/go.mod h1:YwUyrNUtcZcibA99JcfCP6UUp95VVQKO2MJfBzgJDwA=
+github.com/Azure/azure-sdk-for-go/sdk/data/azcosmos v1.4.1/go.mod h1:Krtog/7tz27z75TwM5cIS8bxEH4dcBUezcq+kGVeZEo=
-github.com/Azure/azure-sdk-for-go/sdk/internal v1.10.0 h1:ywEEhmNahHBihViHepv3xPBn1663uRv2t2q/ESv9seY=
+github.com/Azure/azure-sdk-for-go/sdk/internal v1.11.2 h1:9iefClla7iYpfYWdzPCRDozdmndjTm8DXdpCzPajMgA=
-github.com/Azure/azure-sdk-for-go/sdk/internal v1.10.0/go.mod h1:iZDifYGJTIgIIkYRNWPENUnqx6bJ2xnSDFI2tjwZNuY=
+github.com/Azure/azure-sdk-for-go/sdk/internal v1.11.2/go.mod h1:XtLgD3ZD34DAaVIIAyG3objl5DynM3CQ/vMcbBNJZGI=
-github.com/AzureAD/microsoft-authentication-library-for-go v1.3.2 h1:kYRSnvJju5gYVyhkij+RTJ/VR6QIUaCfWeaFm2ycsjQ=
+github.com/AzureAD/microsoft-authentication-library-for-go v1.4.2 h1:oygO0locgZJe7PpYPXT5A29ZkwJaPqcva7BVeemZOZs=
-github.com/AzureAD/microsoft-authentication-library-for-go v1.3.2/go.mod h1:wP83P5OoQ5p6ip3ScPr0BAq0BvuPAvacpEuSzyouqAI=
+github.com/AzureAD/microsoft-authentication-library-for-go v1.4.2/go.mod h1:wP83P5OoQ5p6ip3ScPr0BAq0BvuPAvacpEuSzyouqAI=
-github.com/bytedance/sonic v1.12.9 h1:Od1BvK55NnewtGaJsTDeAOSnLVO2BTSLOe0+ooKokmQ=
+github.com/bytedance/gopkg v0.1.3 h1:TPBSwH8RsouGCBcMBktLt1AymVo2TVsBVCY4b6TnZ/M=
-github.com/bytedance/sonic v1.12.9/go.mod h1:uVvFidNmlt9+wa31S1urfwwthTWteBgG0hWuoKAXTx8=
+github.com/bytedance/gopkg v0.1.3/go.mod h1:576VvJ+eJgyCzdjS+c4+77QF3p7ubbtiKARP3TxducM=
-github.com/bytedance/sonic/loader v0.1.1/go.mod h1:ncP89zfokxS5LZrJxl5z0UJcsk4M4yY2JpfqGeCtNLU=
+github.com/bytedance/sonic v1.14.1 h1:FBMC0zVz5XUmE4z9wF4Jey0An5FueFvOsTKKKtwIl7w=
-github.com/bytedance/sonic/loader v0.2.3 h1:yctD0Q3v2NOGfSWPLPvG2ggA2kV6TS6s4wioyEqssH0=
+github.com/bytedance/sonic v1.14.1/go.mod h1:gi6uhQLMbTdeP0muCnrjHLeCUPyb70ujhnNlhOylAFc=
-github.com/bytedance/sonic/loader v0.2.3/go.mod h1:N8A3vUdtUebEY2/VQC0MyhYeKUFosQU6FxH2JmUe6VI=
+github.com/bytedance/sonic/loader v0.3.0 h1:dskwH8edlzNMctoruo8FPTJDF3vLtDT0sXZwvZJyqeA=
-github.com/cloudwego/base64x v0.1.5 h1:XPciSp1xaq2VCSt6lF0phncD4koWyULpl5bUxbfCyP4=
+github.com/bytedance/sonic/loader v0.3.0/go.mod h1:N8A3vUdtUebEY2/VQC0MyhYeKUFosQU6FxH2JmUe6VI=
-github.com/cloudwego/base64x v0.1.5/go.mod h1:0zlkT4Wn5C6NdauXdJRhSKRlJvmclQ1hhJgA0rcu/8w=
+github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
-github.com/cloudwego/iasm v0.2.0/go.mod h1:8rXZaNYT2n95jn+zTI1sDr+IgcD2GVs0nlbbQPiEFhY=
+github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
-github.com/cosmiumdev/json-patch/v5 v5.9.3 h1:l+Og3+5edqV2NHDo58sz72eS733lbXVYP61seYK43Do=
+github.com/cloudwego/base64x v0.1.6 h1:t11wG9AECkCDk5fMSoxmufanudBtJ+/HemLstXDLI2M=
-github.com/cosmiumdev/json-patch/v5 v5.9.3/go.mod h1:WzSTCdia0WrlZtjnL19P4RiwWtfdyArm/E7stgEeP5g=
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+golang.org/x/exp v0.0.0-20251002181428-27f1f14c8bb9 h1:TQwNpfvNkxAVlItJf6Cr5JTsVZoC/Sj7K3OZv2Pc14A=
+golang.org/x/exp v0.0.0-20251002181428-27f1f14c8bb9/go.mod h1:TwQYMMnGpvZyc+JpB/UAuTNIsVJifOlSkrZkhcvpVUk=
+golang.org/x/mod v0.29.0 h1:HV8lRxZC4l2cr3Zq1LvtOsi/ThTgWnUk/y64QSs8GwA=
+golang.org/x/mod v0.29.0/go.mod h1:NyhrlYXJ2H4eJiRy/WDBO6HMqZQ6q9nk4JzS3NuCK+w=
+golang.org/x/net v0.45.0 h1:RLBg5JKixCy82FtLJpeNlVM0nrSqpCRYzVU1n8kj0tM=
+golang.org/x/net v0.45.0/go.mod h1:ECOoLqd5U3Lhyeyo/QDCEVQ4sNgYsqvCZ722XogGieY=
+golang.org/x/sync v0.17.0 h1:l60nONMj9l5drqw6jlhIELNv9I0A4OFgRsG9k2oT9Ug=
+golang.org/x/sync v0.17.0/go.mod h1:9KTHXmSnoGruLpwFjVSX0lNNA75CykiMECbovNTZqGI=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.30.0 h1:QjkSwP/36a20jFYWkSue1YwXzLmsV5Gfq7Eiy72C1uc=
+golang.org/x/sys v0.37.0 h1:fdNQudmxPjkdUTPnLn5mdQv7Zwvbvpaxqs831goi9kQ=
-golang.org/x/sys v0.30.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.37.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
-golang.org/x/text v0.22.0 h1:bofq7m3/HAFvbF51jz3Q9wLg3jkvSPuiZu/pD1XwgtM=
+golang.org/x/text v0.30.0 h1:yznKA/E9zq54KzlzBEAWn1NXSQ8DIp/NYMy88xJjl4k=
-golang.org/x/text v0.22.0/go.mod h1:YRoo4H8PVmsu+E3Ou7cqLVH8oXWIHVoX0jqUWALQhfY=
+golang.org/x/text v0.30.0/go.mod h1:yDdHFIX9t+tORqspjENWgzaCVXgk0yYnYuSZ8UzzBVM=
-google.golang.org/protobuf v1.36.5 h1:tPhr+woSbjfYvY6/GPufUoYizxw1cF/yFoxJ2fmpwlM=
+golang.org/x/tools v0.37.0 h1:DVSRzp7FwePZW356yEAChSdNcQo6Nsp+fex1SUW09lE=
-google.golang.org/protobuf v1.36.5/go.mod h1:9fA7Ob0pmnwhb644+1+CVWFRbNajQ6iRojtC/QF5bRE=
+golang.org/x/tools v0.37.0/go.mod h1:MBN5QPQtLMHVdvsbtarmTNukZDdgwdwlO5qGacAzF0w=
+google.golang.org/protobuf v1.36.10 h1:AYd7cD/uASjIL6Q9LiTjz8JLcrh/88q5UObnmY3aOOE=
+google.golang.org/protobuf v1.36.10/go.mod h1:HTf+CrKn2C3g5S8VImy6tdcUvCska2kB7j23XfzDpco=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-nullprogram.com/x/optparse v1.0.0/go.mod h1:KdyPE+Igbe0jQUrVfMqDMeJQIJZEuyV7pjYmp6pbG50=

internal/constants/responses.go

@@ -30,3 +30,8 @@ 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"}

internal/datastore/badger_datastore/badger_datastore.go

@@ -0,0 +1,123 @@
+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
+}
+
+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,
+	}
+
+	ds.initializeDataStore(options.InitialDataFilePath)
+
+	go ds.runGarbageCollector()
+
+	return ds
+}
+
+func (r *BadgerDataStore) Close() {
+	if r.gcTicker != nil {
+		r.gcTicker.Stop()
+		r.gcTicker = nil
+	}
+
+	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() {
+	for range r.gcTicker.C {
+	again:
+		err := r.db.RunValueLogGC(0.7)
+		if err == nil {
+			goto again
+		}
+	}
+}
+
+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

@@ -40,4 +40,5 @@ type DataStore interface {
 
 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

@@ -1,4 +1,4 @@
-package mapdatastore
+package jsondatastore
 
 import "github.com/pikami/cosmium/internal/datastore"
 
@@ -15,3 +15,7 @@ func (i *ArrayDocumentIterator) Next() (datastore.Document, datastore.DataStoreS
 
 	return i.documents[i.index], datastore.StatusOk
 }
+
+func (i *ArrayDocumentIterator) Close() {
+	i.documents = []datastore.Document{}
+}

internal/datastore/json_datastore/collections.go

@@ -1,4 +1,4 @@
-package mapdatastore
+package jsondatastore
 
 import (
 	"fmt"
@@ -11,7 +11,7 @@ import (
 	"golang.org/x/exp/maps"
 )
 
-func (r *MapDataStore) GetAllCollections(databaseId string) ([]datastore.Collection, datastore.DataStoreStatus) {
+func (r *JsonDataStore) GetAllCollections(databaseId string) ([]datastore.Collection, datastore.DataStoreStatus) {
 	r.storeState.RLock()
 	defer r.storeState.RUnlock()
 
@@ -22,7 +22,7 @@ func (r *MapDataStore) GetAllCollections(databaseId string) ([]datastore.Collect
 	return maps.Values(r.storeState.Collections[databaseId]), datastore.StatusOk
 }
 
-func (r *MapDataStore) GetCollection(databaseId string, collectionId string) (datastore.Collection, datastore.DataStoreStatus) {
+func (r *JsonDataStore) GetCollection(databaseId string, collectionId string) (datastore.Collection, datastore.DataStoreStatus) {
 	r.storeState.RLock()
 	defer r.storeState.RUnlock()
 
@@ -37,7 +37,7 @@ func (r *MapDataStore) GetCollection(databaseId string, collectionId string) (da
 	return r.storeState.Collections[databaseId][collectionId], datastore.StatusOk
 }
 
-func (r *MapDataStore) DeleteCollection(databaseId string, collectionId string) datastore.DataStoreStatus {
+func (r *JsonDataStore) DeleteCollection(databaseId string, collectionId string) datastore.DataStoreStatus {
 	r.storeState.Lock()
 	defer r.storeState.Unlock()
 
@@ -58,7 +58,7 @@ func (r *MapDataStore) DeleteCollection(databaseId string, collectionId string)
 	return datastore.StatusOk
 }
 
-func (r *MapDataStore) CreateCollection(databaseId string, newCollection datastore.Collection) (datastore.Collection, datastore.DataStoreStatus) {
+func (r *JsonDataStore) CreateCollection(databaseId string, newCollection datastore.Collection) (datastore.Collection, datastore.DataStoreStatus) {
 	r.storeState.Lock()
 	defer r.storeState.Unlock()
 

internal/datastore/json_datastore/databases.go

@@ -1,4 +1,4 @@
-package mapdatastore
+package jsondatastore
 
 import (
 	"fmt"
@@ -10,14 +10,14 @@ import (
 	"golang.org/x/exp/maps"
 )
 
-func (r *MapDataStore) GetAllDatabases() ([]datastore.Database, datastore.DataStoreStatus) {
+func (r *JsonDataStore) GetAllDatabases() ([]datastore.Database, datastore.DataStoreStatus) {
 	r.storeState.RLock()
 	defer r.storeState.RUnlock()
 
 	return maps.Values(r.storeState.Databases), datastore.StatusOk
 }
 
-func (r *MapDataStore) GetDatabase(id string) (datastore.Database, datastore.DataStoreStatus) {
+func (r *JsonDataStore) GetDatabase(id string) (datastore.Database, datastore.DataStoreStatus) {
 	r.storeState.RLock()
 	defer r.storeState.RUnlock()
 
@@ -28,7 +28,7 @@ func (r *MapDataStore) GetDatabase(id string) (datastore.Database, datastore.Dat
 	return datastore.Database{}, datastore.StatusNotFound
 }
 
-func (r *MapDataStore) DeleteDatabase(id string) datastore.DataStoreStatus {
+func (r *JsonDataStore) DeleteDatabase(id string) datastore.DataStoreStatus {
 	r.storeState.Lock()
 	defer r.storeState.Unlock()
 
@@ -46,7 +46,7 @@ func (r *MapDataStore) DeleteDatabase(id string) datastore.DataStoreStatus {
 	return datastore.StatusOk
 }
 
-func (r *MapDataStore) CreateDatabase(newDatabase datastore.Database) (datastore.Database, datastore.DataStoreStatus) {
+func (r *JsonDataStore) CreateDatabase(newDatabase datastore.Database) (datastore.Database, datastore.DataStoreStatus) {
 	r.storeState.Lock()
 	defer r.storeState.Unlock()
 

internal/datastore/json_datastore/documents.go

@@ -1,4 +1,4 @@
-package mapdatastore
+package jsondatastore
 
 import (
 	"fmt"
@@ -10,7 +10,7 @@ import (
 	"golang.org/x/exp/maps"
 )
 
-func (r *MapDataStore) GetAllDocuments(databaseId string, collectionId string) ([]datastore.Document, datastore.DataStoreStatus) {
+func (r *JsonDataStore) GetAllDocuments(databaseId string, collectionId string) ([]datastore.Document, datastore.DataStoreStatus) {
 	r.storeState.RLock()
 	defer r.storeState.RUnlock()
 
@@ -25,7 +25,7 @@ func (r *MapDataStore) GetAllDocuments(databaseId string, collectionId string) (
 	return maps.Values(r.storeState.Documents[databaseId][collectionId]), datastore.StatusOk
 }
 
-func (r *MapDataStore) GetDocument(databaseId string, collectionId string, documentId string) (datastore.Document, datastore.DataStoreStatus) {
+func (r *JsonDataStore) GetDocument(databaseId string, collectionId string, documentId string) (datastore.Document, datastore.DataStoreStatus) {
 	r.storeState.RLock()
 	defer r.storeState.RUnlock()
 
@@ -44,7 +44,7 @@ func (r *MapDataStore) GetDocument(databaseId string, collectionId string, docum
 	return r.storeState.Documents[databaseId][collectionId][documentId], datastore.StatusOk
 }
 
-func (r *MapDataStore) DeleteDocument(databaseId string, collectionId string, documentId string) datastore.DataStoreStatus {
+func (r *JsonDataStore) DeleteDocument(databaseId string, collectionId string, documentId string) datastore.DataStoreStatus {
 	r.storeState.Lock()
 	defer r.storeState.Unlock()
 
@@ -65,7 +65,7 @@ func (r *MapDataStore) DeleteDocument(databaseId string, collectionId string, do
 	return datastore.StatusOk
 }
 
-func (r *MapDataStore) CreateDocument(databaseId string, collectionId string, document map[string]interface{}) (datastore.Document, datastore.DataStoreStatus) {
+func (r *JsonDataStore) CreateDocument(databaseId string, collectionId string, document map[string]interface{}) (datastore.Document, datastore.DataStoreStatus) {
 	r.storeState.Lock()
 	defer r.storeState.Unlock()
 
@@ -100,7 +100,7 @@ func (r *MapDataStore) CreateDocument(databaseId string, collectionId string, do
 	return document, datastore.StatusOk
 }
 
-func (r *MapDataStore) GetDocumentIterator(databaseId string, collectionId string) (datastore.DocumentIterator, datastore.DataStoreStatus) {
+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

internal/datastore/json_datastore/map_datastore.go

@@ -1,21 +1,21 @@
-package mapdatastore
+package jsondatastore
 
 import "github.com/pikami/cosmium/internal/datastore"
 
-type MapDataStore struct {
+type JsonDataStore struct {
 	storeState State
 
 	initialDataFilePath string
 	persistDataFilePath string
 }
 
-type MapDataStoreOptions struct {
+type JsonDataStoreOptions struct {
 	InitialDataFilePath string
 	PersistDataFilePath string
 }
 
-func NewMapDataStore(options MapDataStoreOptions) *MapDataStore {
+func NewJsonDataStore(options JsonDataStoreOptions) *JsonDataStore {
-	dataStore := &MapDataStore{
+	dataStore := &JsonDataStore{
 		storeState: State{
 			Databases:            make(map[string]datastore.Database),
 			Collections:          make(map[string]map[string]datastore.Collection),

internal/datastore/json_datastore/partition_key_ranges.go

@@ -1,4 +1,4 @@
-package mapdatastore
+package jsondatastore
 
 import (
 	"fmt"
@@ -9,7 +9,7 @@ import (
 )
 
 // I have no idea what this is tbh
-func (r *MapDataStore) GetPartitionKeyRanges(databaseId string, collectionId string) ([]datastore.PartitionKeyRange, datastore.DataStoreStatus) {
+func (r *JsonDataStore) GetPartitionKeyRanges(databaseId string, collectionId string) ([]datastore.PartitionKeyRange, datastore.DataStoreStatus) {
 	r.storeState.RLock()
 	defer r.storeState.RUnlock()
 

internal/datastore/json_datastore/state.go

@@ -1,4 +1,4 @@
-package mapdatastore
+package jsondatastore
 
 import (
 	"encoding/json"
@@ -33,7 +33,7 @@ type State struct {
 	UserDefinedFunctions map[string]map[string]map[string]datastore.UserDefinedFunction `json:"udfs"`
 }
 
-func (r *MapDataStore) InitializeDataStore() {
+func (r *JsonDataStore) InitializeDataStore() {
 	if r.initialDataFilePath != "" {
 		r.LoadStateFS(r.initialDataFilePath)
 		return
@@ -55,7 +55,7 @@ func (r *MapDataStore) InitializeDataStore() {
 	}
 }
 
-func (r *MapDataStore) 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)
@@ -68,7 +68,7 @@ func (r *MapDataStore) LoadStateFS(filePath string) {
 	}
 }
 
-func (r *MapDataStore) LoadStateJSON(jsonData string) error {
+func (r *JsonDataStore) LoadStateJSON(jsonData string) error {
 	r.storeState.Lock()
 	defer r.storeState.Unlock()
 
@@ -94,7 +94,7 @@ func (r *MapDataStore) LoadStateJSON(jsonData string) error {
 	return nil
 }
 
-func (r *MapDataStore) SaveStateFS(filePath string) {
+func (r *JsonDataStore) SaveStateFS(filePath string) {
 	r.storeState.RLock()
 	defer r.storeState.RUnlock()
 
@@ -115,7 +115,7 @@ func (r *MapDataStore) SaveStateFS(filePath string) {
 	logger.Infof("User defined functions: %d\n", getLength(r.storeState.UserDefinedFunctions))
 }
 
-func (r *MapDataStore) DumpToJson() (string, error) {
+func (r *JsonDataStore) DumpToJson() (string, error) {
 	r.storeState.RLock()
 	defer r.storeState.RUnlock()
 
@@ -129,7 +129,7 @@ func (r *MapDataStore) DumpToJson() (string, error) {
 
 }
 
-func (r *MapDataStore) Close() {
+func (r *JsonDataStore) Close() {
 	if r.persistDataFilePath != "" {
 		r.SaveStateFS(r.persistDataFilePath)
 	}
@@ -163,7 +163,7 @@ func getLength(v interface{}) int {
 	return count
 }
 
-func (r *MapDataStore) ensureStoreStateNoNullReferences() {
+func (r *JsonDataStore) ensureStoreStateNoNullReferences() {
 	if r.storeState.Databases == nil {
 		r.storeState.Databases = make(map[string]datastore.Database)
 	}

internal/datastore/json_datastore/stored_procedures.go

@@ -1,4 +1,4 @@
-package mapdatastore
+package jsondatastore
 
 import (
 	"fmt"
@@ -10,14 +10,14 @@ import (
 	"golang.org/x/exp/maps"
 )
 
-func (r *MapDataStore) GetAllStoredProcedures(databaseId string, collectionId string) ([]datastore.StoredProcedure, datastore.DataStoreStatus) {
+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 *MapDataStore) GetStoredProcedure(databaseId string, collectionId string, spId string) (datastore.StoredProcedure, datastore.DataStoreStatus) {
+func (r *JsonDataStore) GetStoredProcedure(databaseId string, collectionId string, spId string) (datastore.StoredProcedure, datastore.DataStoreStatus) {
 	r.storeState.RLock()
 	defer r.storeState.RUnlock()
 
@@ -36,7 +36,7 @@ func (r *MapDataStore) GetStoredProcedure(databaseId string, collectionId string
 	return datastore.StoredProcedure{}, datastore.StatusNotFound
 }
 
-func (r *MapDataStore) DeleteStoredProcedure(databaseId string, collectionId string, spId string) datastore.DataStoreStatus {
+func (r *JsonDataStore) DeleteStoredProcedure(databaseId string, collectionId string, spId string) datastore.DataStoreStatus {
 	r.storeState.Lock()
 	defer r.storeState.Unlock()
 
@@ -57,7 +57,7 @@ func (r *MapDataStore) DeleteStoredProcedure(databaseId string, collectionId str
 	return datastore.StatusOk
 }
 
-func (r *MapDataStore) CreateStoredProcedure(databaseId string, collectionId string, sp datastore.StoredProcedure) (datastore.StoredProcedure, datastore.DataStoreStatus) {
+func (r *JsonDataStore) CreateStoredProcedure(databaseId string, collectionId string, sp datastore.StoredProcedure) (datastore.StoredProcedure, datastore.DataStoreStatus) {
 	r.storeState.Lock()
 	defer r.storeState.Unlock()
 

internal/datastore/json_datastore/triggers.go

@@ -1,4 +1,4 @@
-package mapdatastore
+package jsondatastore
 
 import (
 	"fmt"
@@ -10,14 +10,14 @@ import (
 	"golang.org/x/exp/maps"
 )
 
-func (r *MapDataStore) GetAllTriggers(databaseId string, collectionId string) ([]datastore.Trigger, datastore.DataStoreStatus) {
+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]), datastore.StatusOk
 }
 
-func (r *MapDataStore) GetTrigger(databaseId string, collectionId string, triggerId string) (datastore.Trigger, datastore.DataStoreStatus) {
+func (r *JsonDataStore) GetTrigger(databaseId string, collectionId string, triggerId string) (datastore.Trigger, datastore.DataStoreStatus) {
 	r.storeState.RLock()
 	defer r.storeState.RUnlock()
 
@@ -36,7 +36,7 @@ func (r *MapDataStore) GetTrigger(databaseId string, collectionId string, trigge
 	return datastore.Trigger{}, datastore.StatusNotFound
 }
 
-func (r *MapDataStore) DeleteTrigger(databaseId string, collectionId string, triggerId string) datastore.DataStoreStatus {
+func (r *JsonDataStore) DeleteTrigger(databaseId string, collectionId string, triggerId string) datastore.DataStoreStatus {
 	r.storeState.Lock()
 	defer r.storeState.Unlock()
 
@@ -57,7 +57,7 @@ func (r *MapDataStore) DeleteTrigger(databaseId string, collectionId string, tri
 	return datastore.StatusOk
 }
 
-func (r *MapDataStore) CreateTrigger(databaseId string, collectionId string, trigger datastore.Trigger) (datastore.Trigger, datastore.DataStoreStatus) {
+func (r *JsonDataStore) CreateTrigger(databaseId string, collectionId string, trigger datastore.Trigger) (datastore.Trigger, datastore.DataStoreStatus) {
 	r.storeState.Lock()
 	defer r.storeState.Unlock()
 

internal/datastore/json_datastore/user_defined_functions.go

@@ -1,4 +1,4 @@
-package mapdatastore
+package jsondatastore
 
 import (
 	"fmt"
@@ -10,14 +10,14 @@ import (
 	"golang.org/x/exp/maps"
 )
 
-func (r *MapDataStore) GetAllUserDefinedFunctions(databaseId string, collectionId string) ([]datastore.UserDefinedFunction, datastore.DataStoreStatus) {
+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 *MapDataStore) GetUserDefinedFunction(databaseId string, collectionId string, udfId string) (datastore.UserDefinedFunction, datastore.DataStoreStatus) {
+func (r *JsonDataStore) GetUserDefinedFunction(databaseId string, collectionId string, udfId string) (datastore.UserDefinedFunction, datastore.DataStoreStatus) {
 	r.storeState.RLock()
 	defer r.storeState.RUnlock()
 
@@ -36,7 +36,7 @@ func (r *MapDataStore) GetUserDefinedFunction(databaseId string, collectionId st
 	return datastore.UserDefinedFunction{}, datastore.StatusNotFound
 }
 
-func (r *MapDataStore) DeleteUserDefinedFunction(databaseId string, collectionId string, udfId string) datastore.DataStoreStatus {
+func (r *JsonDataStore) DeleteUserDefinedFunction(databaseId string, collectionId string, udfId string) datastore.DataStoreStatus {
 	r.storeState.Lock()
 	defer r.storeState.Unlock()
 
@@ -57,7 +57,7 @@ func (r *MapDataStore) DeleteUserDefinedFunction(databaseId string, collectionId
 	return datastore.StatusOk
 }
 
-func (r *MapDataStore) CreateUserDefinedFunction(databaseId string, collectionId string, udf datastore.UserDefinedFunction) (datastore.UserDefinedFunction, datastore.DataStoreStatus) {
+func (r *JsonDataStore) CreateUserDefinedFunction(databaseId string, collectionId string, udf datastore.UserDefinedFunction) (datastore.UserDefinedFunction, datastore.DataStoreStatus) {
 	r.storeState.Lock()
 	defer r.storeState.Unlock()
 

internal/datastore/models.go

@@ -11,11 +11,12 @@ type Database struct {
 type DataStoreStatus int
 
 const (
-	StatusOk       = 1
+	StatusOk       DataStoreStatus = 1
-	StatusNotFound = 2
+	StatusNotFound DataStoreStatus = 2
-	Conflict       = 3
+	Conflict       DataStoreStatus = 3
-	BadRequest     = 4
+	BadRequest     DataStoreStatus = 4
-	IterEOF        = 5
+	IterEOF        DataStoreStatus = 5
+	Unknown        DataStoreStatus = 6
 )
 
 type TriggerOperation string

parsers/models.go

@@ -34,6 +34,8 @@ const (
 	SelectItemTypeConstant
 	SelectItemTypeFunctionCall
 	SelectItemTypeSubQuery
+	SelectItemTypeExpression
+	SelectItemTypeBinaryExpression
 )
 
 type SelectItem struct {
@@ -64,6 +66,12 @@ type ComparisonExpression struct {
 	Operation string
 }
 
+type BinaryExpression struct {
+	Left      interface{}
+	Right     interface{}
+	Operation string
+}
+
 type ConstantType int
 
 const (
@@ -134,6 +142,8 @@ 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 +112,37 @@ 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 IN function with function call", func(t *testing.T) {
 		testQueryParse(
 			t,
@@ -163,4 +194,27 @@ 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

@@ -178,6 +178,32 @@ func combineExpressions(ex1 interface{}, exs interface{}, operation parsers.Logi
     }, 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
+}
+
 }
 
 Input <- selectStmt:SelectStmt {
@@ -204,7 +230,7 @@ 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 {
@@ -213,7 +239,7 @@ FromClause <- From ws table:TableName selectItem:(ws In ws column:SelectItem { r
     }
 
     return tableTyped, nil
-} / From ws column:SelectItem {
+} / From ws column:SelectItemWithAlias {
     tableSelectItem := column.(parsers.SelectItem)
     table := parsers.Table{
         Value: tableSelectItem.Alias,
@@ -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)
@@ -269,11 +295,34 @@ SelectAsterisk <- "*" {
     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
     return makeColumnList(selectItem, make([]interface{}, 0))
@@ -289,6 +338,11 @@ 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 {
@@ -301,7 +355,15 @@ 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:
@@ -318,10 +380,6 @@ SelectItem <- selectItem:(SubQuerySelectItem / Literal / FunctionCall / SelectAr
         }
     }
 
-	if aliasValue, ok := asClause.(string); ok {
-		itemResult.Alias = aliasValue
-	}
-
     return itemResult, nil
 }
 
@@ -355,10 +413,20 @@ AndExpression <- ex1:ComparisonExpression ex2:(ws And ws ex:ComparisonExpression
     return combineExpressions(ex1, ex2, parsers.LogicalExpressionTypeAnd)
 }
 
-ComparisonExpression <- "(" ws ex:OrExpression ws ")" { return ex, nil }
+ComparisonExpression <- left:AddSubExpression ws op:ComparisonOperator ws right:AddSubExpression {
-    / left:SelectItem ws op:ComparisonOperator ws right:SelectItem {
     return parsers.ComparisonExpression{Left:left,Right:right,Operation:op.(string)}, nil
-} / inv:(Not ws)? ex:SelectItem {
+} / 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 <- "(" ws ex:OrExpression ws ")" { return ex, nil }
+    / inv:(Not ws)? ex:SelectItem {
     if inv != nil {
         ex1 := ex.(parsers.SelectItem)
         ex1.Invert = true
@@ -415,6 +483,10 @@ 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 {
@@ -442,6 +514,7 @@ BooleanLiteral <- ("true"i / "false"i) {
 FunctionCall <- StringFunctions
     / TypeCheckingFunctions
     / ArrayFunctions
+    / ConditionalFunctions
     / InFunction
     / AggregateFunctions
     / MathFunctions
@@ -489,6 +562,8 @@ ArrayFunctions <- ArrayConcatExpression
     / SetIntersectExpression
     / SetUnionExpression
 
+ConditionalFunctions <- IifExpression
+
 MathFunctions <- MathAbsExpression
     / MathAcosExpression
     / MathAsinExpression
@@ -681,6 +756,10 @@ 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}) }
@@ -724,10 +803,33 @@ 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 ")" {
+InFunction <- ex1:SelectProperty ws notIn:("NOT"i 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{})...))
+    arguments := append([]interface{}{ex1, ex2}, others.([]interface{})...)
-} / "(" ws ex1:SelectItem ws In ws "(" ws ex2:SelectItem others:(ws "," ws ex:SelectItem { return ex, nil })* ws ")" ws ")" {
+    functionCall, _ := createFunctionCall(parsers.FunctionCallIn, arguments)
-    return createFunctionCall(parsers.FunctionCallIn, append([]interface{}{ex1, ex2}, others.([]interface{})...))
+    
+    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")},
+			},
+		)
+	})
 }

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/common.go

@@ -69,6 +69,28 @@ func (r rowContext) resolveSelectItem(selectItem parsers.SelectItem) interface{}
 		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)
 }
 
@@ -209,6 +231,9 @@ func (r rowContext) selectItem_SelectItemTypeFunctionCall(functionCall parsers.F
 	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:
@@ -301,6 +326,45 @@ func (r rowContext) selectItem_SelectItemTypeFunctionCall(functionCall parsers.F
 	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]]
 
@@ -336,6 +400,7 @@ func (r rowContext) selectItem_SelectItemTypeField(selectItem parsers.SelectItem
 }
 
 func compareValues(val1, val2 interface{}) int {
+	// Handle nil values
 	if val1 == nil && val2 == nil {
 		return 0
 	} else if val1 == nil {
@@ -344,27 +409,24 @@ func compareValues(val1, val2 interface{}) int {
 		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 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)

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/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/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

@@ -149,6 +149,41 @@ 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,
@@ -210,4 +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/select_test.go

@@ -205,4 +205,27 @@ func Test_Execute_Select(t *testing.T) {
 			},
 		)
 	})
+
+	t.Run("Should execute SELECT empty object", func(t *testing.T) {
+		testQueryExecute(
+			t,
+			parsers.SelectStmt{
+				SelectItems: []parsers.SelectItem{
+					{
+						Alias:       "obj",
+						Type:        parsers.SelectItemTypeObject,
+						SelectItems: []parsers.SelectItem{},
+					},
+				},
+				Table: parsers.Table{SelectItem: testutils.SelectItem_Path("c")},
+			},
+			mockData,
+			[]memoryexecutor.RowType{
+				map[string]interface{}{"obj": map[string]interface{}{}},
+				map[string]interface{}{"obj": map[string]interface{}{}},
+				map[string]interface{}{"obj": map[string]interface{}{}},
+				map[string]interface{}{"obj": map[string]interface{}{}},
+			},
+		)
+	})
 }

sharedlibrary/shared.go

@@ -27,7 +27,7 @@ const (
 	ResponseServerInstanceAlreadyExists                = 104
 	ResponseServerInstanceNotFound                     = 105
 	ResponseFailedToStartServer                        = 106
-	ResponseCurentDataStoreDoesNotSupportStateLoading = 107
+	ResponseCurrentDataStoreDoesNotSupportStateLoading = 107
 
 	ResponseDataStoreNotFound   = 200
 	ResponseDataStoreConflict   = 201

sharedlibrary/sharedlibrary.go

@@ -11,7 +11,9 @@ import (
 
 	"github.com/pikami/cosmium/api"
 	"github.com/pikami/cosmium/api/config"
-	mapdatastore "github.com/pikami/cosmium/internal/datastore/map_datastore"
+	"github.com/pikami/cosmium/internal/datastore"
+	badgerdatastore "github.com/pikami/cosmium/internal/datastore/badger_datastore"
+	jsondatastore "github.com/pikami/cosmium/internal/datastore/json_datastore"
 )
 
 //export CreateServerInstance
@@ -32,10 +34,19 @@ func CreateServerInstance(serverName *C.char, configurationJSON *C.char) int {
 	configuration.ApplyDefaultsToEmptyFields()
 	configuration.PopulateCalculatedFields()
 
-	dataStore := mapdatastore.NewMapDataStore(mapdatastore.MapDataStoreOptions{
+	var dataStore datastore.DataStore
+	switch configuration.DataStore {
+	case config.DataStoreBadger:
+		dataStore = badgerdatastore.NewBadgerDataStore(badgerdatastore.BadgerDataStoreOptions{
 			InitialDataFilePath: configuration.InitialDataFilePath,
 			PersistDataFilePath: configuration.PersistDataFilePath,
 		})
+	default:
+		dataStore = jsondatastore.NewJsonDataStore(jsondatastore.JsonDataStoreOptions{
+			InitialDataFilePath: configuration.InitialDataFilePath,
+			PersistDataFilePath: configuration.PersistDataFilePath,
+		})
+	}
 
 	server := api.NewApiServer(dataStore, &configuration)
 	err = server.Start()
@@ -57,6 +68,7 @@ func StopServerInstance(serverName *C.char) int {
 
 	if serverInstance, ok := getInstance(serverNameStr); ok {
 		serverInstance.server.Stop()
+		serverInstance.dataStore.Close()
 		removeInstance(serverNameStr)
 		return ResponseSuccess
 	}
@@ -85,14 +97,14 @@ func LoadServerInstanceState(serverName *C.char, stateJSON *C.char) int {
 	stateJSONStr := C.GoString(stateJSON)
 
 	if serverInstance, ok := getInstance(serverNameStr); ok {
-		if mapDS, ok := serverInstance.dataStore.(*mapdatastore.MapDataStore); ok {
+		if jsonDS, ok := serverInstance.dataStore.(*jsondatastore.JsonDataStore); ok {
-			err := mapDS.LoadStateJSON(stateJSONStr)
+			err := jsonDS.LoadStateJSON(stateJSONStr)
 			if err != nil {
 				return ResponseFailedToLoadState
 			}
 			return ResponseSuccess
 		}
-		return ResponseCurentDataStoreDoesNotSupportStateLoading
+		return ResponseCurrentDataStoreDoesNotSupportStateLoading
 	}
 
 	return ResponseServerInstanceNotFound