wehub-resource-sync
111 lines
3.3 KiB
Go
111 lines
3.3 KiB
Go
// Copyright 2026 Dolthub, Inc.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package functions
|
|
|
|
import (
|
|
"fmt"
|
|
"strings"
|
|
|
|
"github.com/dolthub/go-mysql-server/sql"
|
|
"github.com/goccy/go-json"
|
|
|
|
"github.com/dolthub/doltgresql/server/functions/framework"
|
|
pgtypes "github.com/dolthub/doltgresql/server/types"
|
|
)
|
|
|
|
// initRowToJson registers the functions to the catalog.
|
|
func initRowToJson() {
|
|
framework.RegisterFunction(row_to_json_record)
|
|
framework.RegisterFunction(row_to_json_record_bool)
|
|
}
|
|
|
|
// row_to_json_record represents the PostgreSQL function of the same name, taking the same parameters.
|
|
var row_to_json_record = framework.Function1{
|
|
Name: "row_to_json",
|
|
Return: pgtypes.Json,
|
|
Parameters: [1]*pgtypes.DoltgresType{pgtypes.Record},
|
|
Strict: true,
|
|
Callable: func(ctx *sql.Context, paramsAndReturn [2]*pgtypes.DoltgresType, val any) (any, error) {
|
|
values := val.([]pgtypes.RecordValue)
|
|
return rowToJson(ctx, paramsAndReturn[0], values, false)
|
|
},
|
|
}
|
|
|
|
// row_to_json_record_bool represents the PostgreSQL function of the same name, taking the same parameters.
|
|
var row_to_json_record_bool = framework.Function2{
|
|
Name: "row_to_json",
|
|
Return: pgtypes.Json,
|
|
Parameters: [2]*pgtypes.DoltgresType{pgtypes.Record, pgtypes.Bool},
|
|
Strict: true,
|
|
Callable: func(ctx *sql.Context, paramsAndReturn [3]*pgtypes.DoltgresType, val1, val2 any) (any, error) {
|
|
values := val1.([]pgtypes.RecordValue)
|
|
pretty := val2.(bool)
|
|
return rowToJson(ctx, paramsAndReturn[0], values, pretty)
|
|
},
|
|
}
|
|
|
|
// rowToJson converts an array of RecordValue to a JSON object string.
|
|
func rowToJson(ctx *sql.Context, rowType *pgtypes.DoltgresType, values []pgtypes.RecordValue, pretty bool) (string, error) {
|
|
keys := fieldNames(rowType, len(values))
|
|
|
|
sb := strings.Builder{}
|
|
sb.WriteRune('{')
|
|
for i, rv := range values {
|
|
if i > 0 {
|
|
if pretty {
|
|
sb.WriteString(",\n ")
|
|
} else {
|
|
sb.WriteRune(',')
|
|
}
|
|
}
|
|
|
|
keyBytes, err := json.Marshal(keys[i])
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
sb.Write(keyBytes)
|
|
sb.WriteRune(':')
|
|
|
|
var elemType *pgtypes.DoltgresType
|
|
if dgt, ok := rv.Type.(*pgtypes.DoltgresType); ok {
|
|
elemType = dgt
|
|
}
|
|
raw, err := valueToJsonRaw(ctx, elemType, rv.Value)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
sb.Write(raw)
|
|
}
|
|
sb.WriteRune('}')
|
|
return sb.String(), nil
|
|
}
|
|
|
|
// fieldNames returns the JSON key names for each field. If the resolved type has
|
|
// CompositeAttrs (i.e. it's a named composite/table row type), those names are used.
|
|
// Otherwise, anonymous row field names are f1, f2, etc.
|
|
func fieldNames(rowType *pgtypes.DoltgresType, count int) []string {
|
|
names := make([]string, count)
|
|
if rowType != nil && len(rowType.CompositeAttrs) == count {
|
|
for i, attr := range rowType.CompositeAttrs {
|
|
names[i] = attr.Name
|
|
}
|
|
} else {
|
|
for i := range names {
|
|
names[i] = fmt.Sprintf("f%d", i+1)
|
|
}
|
|
}
|
|
return names
|
|
}
|