48 lines
1.7 KiB
C++
48 lines
1.7 KiB
C++
/**
|
|
* Copyright (c) 2021 OceanBase
|
|
* OceanBase CE is licensed under Mulan PubL v2.
|
|
* You can use this software according to the terms and conditions of the Mulan PubL v2.
|
|
* You may obtain a copy of Mulan PubL v2 at:
|
|
* http://license.coscl.org.cn/MulanPubL-2.0
|
|
* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
|
|
* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
|
|
* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
|
|
* See the Mulan PubL v2 for more details.
|
|
* This file is for define of func json_merge_preserve
|
|
*/
|
|
|
|
|
|
#ifndef OCEANBASE_SQL_OB_EXPR_JSON_MERGE_PRESERVE_H_
|
|
#define OCEANBASE_SQL_OB_EXPR_JSON_MERGE_PRESERVE_H_
|
|
|
|
#include "sql/engine/expr/ob_expr_operator.h"
|
|
|
|
using namespace oceanbase::common;
|
|
|
|
namespace oceanbase
|
|
{
|
|
namespace sql
|
|
{
|
|
class ObExprJsonMergePreserve : public ObFuncExprOperator
|
|
{
|
|
public:
|
|
explicit ObExprJsonMergePreserve(common::ObIAllocator &alloc);
|
|
explicit ObExprJsonMergePreserve(common::ObIAllocator &alloc, ObExprOperatorType type,
|
|
const char *name, int32_t param_num, int32_t dimension);
|
|
virtual ~ObExprJsonMergePreserve();
|
|
virtual int calc_result_typeN(ObExprResType& type,
|
|
ObExprResType* types,
|
|
int64_t param_num,
|
|
common::ObExprTypeCtx& type_ctx) const override;
|
|
|
|
static int eval_json_merge_preserve(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &res);
|
|
|
|
virtual int cg_expr(ObExprCGCtx &expr_cg_ctx, const ObRawExpr &raw_expr,
|
|
ObExpr &rt_expr) const override;
|
|
private:
|
|
DISALLOW_COPY_AND_ASSIGN(ObExprJsonMergePreserve);
|
|
};
|
|
|
|
} // sql
|
|
} // oceanbase
|
|
#endif // OCEANBASE_SQL_OB_EXPR_JSON_MERGE_PRESERVE_H_
|