74 lines
2.6 KiB
C++
74 lines
2.6 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 contains implementation for st_astext.
|
|
*/
|
|
|
|
#ifndef OCEANBASE_SQL_OB_EXPR_ST_ASTEXT_
|
|
#define OCEANBASE_SQL_OB_EXPR_ST_ASTEXT_
|
|
|
|
#include "sql/engine/expr/ob_expr_operator.h"
|
|
|
|
namespace oceanbase
|
|
{
|
|
namespace sql
|
|
{
|
|
class ObExprSTAsText : public ObFuncExprOperator
|
|
{
|
|
public:
|
|
explicit ObExprSTAsText(common::ObIAllocator &alloc,
|
|
ObExprOperatorType type,
|
|
const char *name,
|
|
int32_t param_num,
|
|
int32_t dimension);
|
|
explicit ObExprSTAsText(common::ObIAllocator &alloc);
|
|
virtual ~ObExprSTAsText() {}
|
|
virtual int calc_result_typeN(ObExprResType &type,
|
|
ObExprResType *types_stack,
|
|
int64_t param_num,
|
|
common::ObExprTypeCtx &type_ctx) const override;
|
|
static int eval_st_astext(const ObExpr &expr,
|
|
ObEvalCtx &ctx,
|
|
ObDatum &res);
|
|
static int eval_st_astext_common(const ObExpr &expr,
|
|
ObEvalCtx &ctx,
|
|
ObDatum &res,
|
|
const char *func_name);
|
|
virtual int cg_expr(ObExprCGCtx &expr_cg_ctx,
|
|
const ObRawExpr &raw_expr,
|
|
ObExpr &rt_expr) const override;
|
|
private:
|
|
DISALLOW_COPY_AND_ASSIGN(ObExprSTAsText);
|
|
};
|
|
|
|
class ObExprSTAsWkt : public ObExprSTAsText
|
|
{
|
|
public:
|
|
explicit ObExprSTAsWkt(common::ObIAllocator &alloc)
|
|
: ObExprSTAsText(alloc,
|
|
T_FUN_SYS_ST_ASWKT,
|
|
N_ST_ASWKT,
|
|
MORE_THAN_ZERO,
|
|
NOT_ROW_DIMENSION) {}
|
|
virtual ~ObExprSTAsWkt() {}
|
|
static int eval_st_astext(const ObExpr &expr,
|
|
ObEvalCtx &ctx,
|
|
ObDatum &res);
|
|
int cg_expr(ObExprCGCtx &expr_cg_ctx,
|
|
const ObRawExpr &raw_expr,
|
|
ObExpr &rt_expr) const override;
|
|
private:
|
|
DISALLOW_COPY_AND_ASSIGN(ObExprSTAsWkt);
|
|
};
|
|
|
|
|
|
} // sql
|
|
} // oceanbase
|
|
#endif // OCEANBASE_SQL_OB_EXPR_ST_ASTEXT_
|