Support parameter in bracket #8

api/tests/documents_test.go

@@ -147,6 +147,21 @@ func Test_Documents(t *testing.T) {
 		)
 	})
 
+	t.Run("Should query document with query parameters as accessor", func(t *testing.T) {
+		testCosmosQuery(t, collectionClient,
+			`select c.id
+			FROM c
+			WHERE c[@param]="67890"
+			ORDER BY c.id`,
+			[]azcosmos.QueryParameter{
+				{Name: "@param", Value: "id"},
+			},
+			[]interface{}{
+				map[string]interface{}{"id": "67890"},
+			},
+		)
+	})
+
 	t.Run("Should query array accessor", func(t *testing.T) {
 		testCosmosQuery(t, collectionClient,
 			`SELECT c.id,

parsers/nosql/nosql.peg

@@ -325,6 +325,7 @@ DotFieldAccess <- "." id:Identifier {
 
 ArrayFieldAccess <- "[\"" id:Identifier "\"]" { return id, nil }
   / "[" id:Integer "]" { return strconv.Itoa(id.(int)), nil }
+  / "[" id:ParameterConstant "]" { return id.(parsers.Constant).Value.(string), nil }
 
 Identifier <- [a-zA-Z_][a-zA-Z0-9_]* {
     return string(c.text), nil

parsers/nosql/select_test.go

@@ -22,6 +22,20 @@ func Test_Parse_Select(t *testing.T) {
 		)
 	})
 
+	t.Run("Should parse SELECT with query parameters as accessor", func(t *testing.T) {
+		testQueryParse(
+			t,
+			`SELECT c.id, c[@param] FROM c`,
+			parsers.SelectStmt{
+				SelectItems: []parsers.SelectItem{
+					{Path: []string{"c", "id"}},
+					{Path: []string{"c", "@param"}},
+				},
+				Table: parsers.Table{Value: "c"},
+			},
+		)
+	})
+
 	t.Run("Should parse SELECT DISTINCT", func(t *testing.T) {
 		testQueryParse(
 			t,

query_executors/memory_executor/memory_executor.go

@@ -317,6 +317,10 @@ func (r rowContext) applyProjection(selectItems []parsers.SelectItem) RowType {
 			} else {
 				destinationName = fmt.Sprintf("$%d", index+1)
 			}
+
+			if destinationName[0] == '@' {
+				destinationName = r.parameters[destinationName].(string)
+			}
 		}
 
 		row[destinationName] = r.resolveSelectItem(selectItem)
@@ -572,6 +576,9 @@ func (r rowContext) selectItem_SelectItemTypeField(selectItem parsers.SelectItem
 
 	if len(selectItem.Path) > 1 {
 		for _, pathSegment := range selectItem.Path[1:] {
+			if pathSegment[0] == '@' {
+				pathSegment = r.parameters[pathSegment].(string)
+			}
 
 			switch nestedValue := value.(type) {
 			case map[string]interface{}:

query_executors/memory_executor/select_test.go

@@ -35,6 +35,29 @@ func Test_Execute_Select(t *testing.T) {
 		)
 	})
 
+	t.Run("Should execute SELECT with query parameters as accessor", func(t *testing.T) {
+		testQueryExecute(
+			t,
+			parsers.SelectStmt{
+				SelectItems: []parsers.SelectItem{
+					{Path: []string{"c", "id"}},
+					{Path: []string{"c", "@param"}},
+				},
+				Table: parsers.Table{Value: "c"},
+				Parameters: map[string]interface{}{
+					"@param": "pk",
+				},
+			},
+			mockData,
+			[]memoryexecutor.RowType{
+				map[string]interface{}{"id": "12345", "pk": 123},
+				map[string]interface{}{"id": "67890", "pk": 456},
+				map[string]interface{}{"id": "456", "pk": 456},
+				map[string]interface{}{"id": "123", "pk": 456},
+			},
+		)
+	})
+
 	t.Run("Should execute SELECT DISTINCT", func(t *testing.T) {
 		testQueryExecute(
 			t,