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2026-07-13 12:32:25 +08:00

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// Copyright 2024 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 types
import (
"github.com/dolthub/go-mysql-server/sql"
"github.com/dolthub/doltgresql/core/id"
)
// Json is the standard JSON type.
var Json = &DoltgresType{
ID: toInternal("json"),
TypLength: int16(-1),
PassedByVal: false,
TypType: TypeType_Base,
TypCategory: TypeCategory_UserDefinedTypes,
IsPreferred: false,
IsDefined: true,
Delimiter: ",",
RelID: id.Null,
SubscriptFunc: toFuncID("-"),
Elem: internalNullType,
Array: internalNullType,
InputFunc: toFuncID("json_in", toInternal("cstring")),
OutputFunc: toFuncID("json_out", toInternal("json")),
ReceiveFunc: toFuncID("json_recv", toInternal("internal")),
SendFunc: toFuncID("json_send", toInternal("json")),
ModInFunc: toFuncID("-"),
ModOutFunc: toFuncID("-"),
AnalyzeFunc: toFuncID("-"),
Align: TypeAlignment_Int,
Storage: TypeStorage_Extended,
NotNull: false,
BaseTypeType: internalNullType,
TypMod: -1,
NDims: 0,
TypCollation: id.NullCollation,
DefaulBin: "",
Default: "",
Acl: nil,
Checks: nil,
attTypMod: -1,
CompareFunc: toFuncID("-"),
SerializationFunc: serializeTypeJson,
DeserializationFunc: deserializeTypeJson,
}
// serializeTypeJson handles serialization from the standard representation to our serialized representation that is
// written in Dolt.
func serializeTypeJson(ctx *sql.Context, t *DoltgresType, val any) ([]byte, error) {
return []byte(val.(string)), nil
}
// deserializeTypeJson handles deserialization from the Dolt serialized format to our standard representation used by
// expressions and nodes.
func deserializeTypeJson(ctx *sql.Context, t *DoltgresType, data []byte) (any, error) {
if len(data) == 0 {
return nil, nil
}
return string(data), nil
}