Implement UPPER/LOWER; minor Fixes

go.mod

@@ -6,6 +6,7 @@ require (
 	github.com/Azure/azure-sdk-for-go/sdk/azcore v1.9.2
 	github.com/Azure/azure-sdk-for-go/sdk/data/azcosmos v0.3.6
 	github.com/gin-gonic/gin v1.9.1
+	github.com/google/uuid v1.1.1
 	github.com/stretchr/testify v1.8.4
 )
 

internal/repositories/collections.go

@@ -1,14 +1,15 @@
 package repositories
 
 import (
+	"fmt"
+	"time"
+
+	"github.com/google/uuid"
 	repositorymodels "github.com/pikami/cosmium/internal/repository_models"
 	structhidrators "github.com/pikami/cosmium/internal/struct_hidrators"
 )
 
-var collections = []repositorymodels.Collection{
+var collections = []repositorymodels.Collection{}
-	{ID: "db1"},
-	{ID: "db2"},
-}
 
 func GetAllCollections(databaseId string) ([]repositorymodels.Collection, repositorymodels.RepositoryStatus) {
 	dbCollections := make([]repositorymodels.Collection, 0)
@@ -52,6 +53,9 @@ func CreateCollection(databaseId string, newCollection repositorymodels.Collecti
 
 	newCollection = structhidrators.Hidrate(newCollection).(repositorymodels.Collection)
 
+	newCollection.TimeStamp = time.Now().Unix()
+	newCollection.UniqueID = uuid.New().String()
+	newCollection.ETag = fmt.Sprintf("\"%s\"", newCollection.UniqueID)
 	newCollection.Internals = struct{ DatabaseId string }{
 		DatabaseId: databaseId,
 	}

internal/repositories/databases.go

@@ -1,6 +1,12 @@
 package repositories
 
-import repositorymodels "github.com/pikami/cosmium/internal/repository_models"
+import (
+	"fmt"
+	"time"
+
+	"github.com/google/uuid"
+	repositorymodels "github.com/pikami/cosmium/internal/repository_models"
+)
 
 var databases = []repositorymodels.Database{
 	{ID: "db1"},
@@ -39,6 +45,9 @@ func CreateDatabase(newDatabase repositorymodels.Database) repositorymodels.Repo
 		}
 	}
 
+	newDatabase.TimeStamp = time.Now().Unix()
+	newDatabase.UniqueID = uuid.New().String()
+	newDatabase.ETag = fmt.Sprintf("\"%s\"", newDatabase.UniqueID)
 	databases = append(databases, newDatabase)
 	return repositorymodels.StatusOk
 }

internal/repositories/documents.go

@@ -1,9 +1,12 @@
 package repositories
 
 import (
+	"fmt"
 	"log"
 	"strings"
+	"time"
 
+	"github.com/google/uuid"
 	repositorymodels "github.com/pikami/cosmium/internal/repository_models"
 	"github.com/pikami/cosmium/parsers"
 	"github.com/pikami/cosmium/parsers/nosql"
@@ -93,6 +96,9 @@ func CreateDocument(databaseId string, collectionId string, document map[string]
 		partitionKeyValue = append(partitionKeyValue, val.(string))
 	}
 
+	document["_ts"] = time.Now().Unix()
+	document["_rid"] = uuid.New().String()
+	document["_etag"] = fmt.Sprintf("\"%s\"", document["_rid"])
 	document["_internal"] = map[string]interface{}{
 		"databaseId":        databaseId,
 		"collectionId":      collectionId,

internal/repository_models/models.go

@@ -1,7 +1,10 @@
 package repositorymodels
 
 type Database struct {
-	ID string `json:"id"`
+	ID        string `json:"id"`
+	TimeStamp int64  `json:"_ts"`
+	UniqueID  string `json:"_rid"`
+	ETag      string `json:"_etag"`
 }
 
 type RepositoryStatus int
@@ -17,10 +20,10 @@ type Collection struct {
 	ID             string                   `json:"id"`
 	IndexingPolicy CollectionIndexingPolicy `json:"indexingPolicy"`
 	PartitionKey   CollectionPartitionKey   `json:"partitionKey"`
-	Rid            string                   `json:"_rid"`
+	UniqueID       string                   `json:"_rid"`
-	Ts             int                      `json:"_ts"`
+	TimeStamp      int64                    `json:"_ts"`
 	Self           string                   `json:"_self"`
-	Etag           string                   `json:"_etag"`
+	ETag           string                   `json:"_etag"`
 	Docs           string                   `json:"_docs"`
 	Sprocs         string                   `json:"_sprocs"`
 	Triggers       string                   `json:"_triggers"`

internal/struct_hidrators/collection_defaults.go

@@ -20,10 +20,10 @@ var defaultCollection repositorymodels.Collection = repositorymodels.Collection{
 		Kind:    "Hash",
 		Version: 2,
 	},
-	Rid:       "nFFFFFFFFFF=",
+	UniqueID:  "nFFFFFFFFFF=",
-	Ts:        0,
+	TimeStamp: 0,
 	Self:      "",
-	Etag:      "\"00000000-0000-0000-0000-000000000000\"",
+	ETag:      "\"00000000-0000-0000-0000-000000000000\"",
 	Docs:      "docs/",
 	Sprocs:    "sprocs/",
 	Triggers:  "triggers/",

parsers/models.go

@@ -89,6 +89,8 @@ const (
 	FunctionCallIndexOf      FunctionCallType = "IndexOf"
 	FunctionCallToString     FunctionCallType = "ToString"
 	FunctionCallIn           FunctionCallType = "In"
+	FunctionCallUpper        FunctionCallType = "Upper"
+	FunctionCallLower        FunctionCallType = "Lower"
 )
 
 type FunctionCall struct {

parsers/nosql/nosql.peg

@@ -312,6 +312,16 @@ StringFunctions <- StringEqualsExpression
     / ToStringExpression
     / ConcatExpression
     / ThreeArgumentStringFunctionExpression
+    / UpperExpression
+    / LowerExpression
+
+UpperExpression <- "UPPER"i ws "(" ex:SelectItem ")" {
+    return parsers.FunctionCall{Type: parsers.FunctionCallUpper, Arguments: []interface{}{ex}}, nil
+}
+
+LowerExpression <- "LOWER"i ws "(" ex:SelectItem ")" {
+    return parsers.FunctionCall{Type: parsers.FunctionCallLower, Arguments: []interface{}{ex}}, nil
+}
 
 StringEqualsExpression <- StringEquals ws "(" ws ex1:SelectItem ws "," ws ex2:SelectItem ws ignoreCase:("," ws boolean:SelectItem { return boolean, nil })? ")" {
     return parsers.FunctionCall{Type: parsers.FunctionCallStringEquals, Arguments: []interface{}{ex1, ex2, ignoreCase}}, nil

parsers/nosql/nosql_string_functions_test.go

@@ -288,4 +288,52 @@ func Test_Execute_StringFunctions(t *testing.T) {
 			},
 		)
 	})
+
+	t.Run("Should parse function UPPER()", func(t *testing.T) {
+		testQueryParse(
+			t,
+			`SELECT UPPER(c.id) FROM c`,
+			parsers.SelectStmt{
+				SelectItems: []parsers.SelectItem{
+					{
+						Type: parsers.SelectItemTypeFunctionCall,
+						Value: parsers.FunctionCall{
+							Type: parsers.FunctionCallUpper,
+							Arguments: []interface{}{
+								parsers.SelectItem{
+									Path: []string{"c", "id"},
+									Type: parsers.SelectItemTypeField,
+								},
+							},
+						},
+					},
+				},
+				Table: parsers.Table{Value: "c"},
+			},
+		)
+	})
+
+	t.Run("Should parse function LOWER()", func(t *testing.T) {
+		testQueryParse(
+			t,
+			`SELECT LOWER(c.id) FROM c`,
+			parsers.SelectStmt{
+				SelectItems: []parsers.SelectItem{
+					{
+						Type: parsers.SelectItemTypeFunctionCall,
+						Value: parsers.FunctionCall{
+							Type: parsers.FunctionCallLower,
+							Arguments: []interface{}{
+								parsers.SelectItem{
+									Path: []string{"c", "id"},
+									Type: parsers.SelectItemTypeField,
+								},
+							},
+						},
+					},
+				},
+				Table: parsers.Table{Value: "c"},
+			},
+		)
+	})
 }

query_executors/memory_executor/memory_executor.go

@@ -190,6 +190,10 @@ func getFieldValue(field parsers.SelectItem, queryParameters map[string]interfac
 			return strings_IndexOf(typedValue.Arguments, queryParameters, row)
 		case parsers.FunctionCallToString:
 			return strings_ToString(typedValue.Arguments, queryParameters, row)
+		case parsers.FunctionCallUpper:
+			return strings_Upper(typedValue.Arguments, queryParameters, row)
+		case parsers.FunctionCallLower:
+			return strings_Lower(typedValue.Arguments, queryParameters, row)
 		case parsers.FunctionCallIsDefined:
 			return typeChecking_IsDefined(typedValue.Arguments, queryParameters, row)
 		case parsers.FunctionCallIn:

query_executors/memory_executor/string_functions.go

@@ -101,6 +101,16 @@ func strings_ToString(arguments []interface{}, queryParameters map[string]interf
 	return convertToString(value)
 }
 
+func strings_Upper(arguments []interface{}, queryParameters map[string]interface{}, row RowType) string {
+	value := getFieldValue(arguments[0].(parsers.SelectItem), queryParameters, row)
+	return strings.ToUpper(convertToString(value))
+}
+
+func strings_Lower(arguments []interface{}, queryParameters map[string]interface{}, row RowType) string {
+	value := getFieldValue(arguments[0].(parsers.SelectItem), queryParameters, row)
+	return strings.ToLower(convertToString(value))
+}
+
 func getBoolFlag(arguments []interface{}, queryParameters map[string]interface{}, row RowType) bool {
 	ignoreCase := false
 	if len(arguments) > 2 && arguments[2] != nil {
@@ -117,10 +127,10 @@ func parseString(argument interface{}, queryParameters map[string]interface{}, r
 	exItem := argument.(parsers.SelectItem)
 	ex := getFieldValue(exItem, queryParameters, row)
 	if str1, ok := ex.(string); ok {
-		fmt.Println("StringEquals got parameters of wrong type")
 		return str1
 	}
 
+	fmt.Println("StringEquals got parameters of wrong type")
 	return ""
 }