79 lines
2.8 KiB
C++
79 lines
2.8 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.
|
|
*/
|
|
|
|
#ifndef OCEANBASE_OB_SQL_EXPR_ARG_CASE_H_
|
|
#define OCEANBASE_OB_SQL_EXPR_ARG_CASE_H_
|
|
|
|
#include "sql/engine/expr/ob_expr_operator.h"
|
|
#include "sql/engine/expr/ob_expr_result_type_util.h"
|
|
|
|
namespace oceanbase
|
|
{
|
|
namespace sql
|
|
{
|
|
|
|
typedef int (*ob_get_cmp_type_func) (common::ObObjType &type,
|
|
const common::ObObjType &type1,
|
|
const common::ObObjType &type2,
|
|
const common::ObObjType &type3);
|
|
|
|
class ObExprArgCase : public ObExprOperator
|
|
{
|
|
public:
|
|
explicit ObExprArgCase(common::ObIAllocator &alloc);
|
|
virtual ~ObExprArgCase();
|
|
|
|
virtual int assign(const ObExprOperator &other);
|
|
|
|
virtual int deserialize(const char *buf, const int64_t data_len, int64_t &pos);
|
|
|
|
virtual int calc_result_typeN(ObExprResType &type,
|
|
ObExprResType *types_stack,
|
|
int64_t param_num,
|
|
common::ObExprTypeCtx &type_ctx) const;
|
|
static int calc_with_cast(common::ObObj &result,
|
|
const common::ObObj *objs_stack,
|
|
int64_t param_num,
|
|
common::ObCompareCtx &cmp_ctx,
|
|
common::ObCastCtx &cast_ctx,
|
|
const ObExprResType &res_type,
|
|
const ob_get_cmp_type_func get_cmp_type_func);
|
|
static int calc_without_cast(common::ObObj &result,
|
|
const common::ObObj *objs_stack,
|
|
int64_t param_num,
|
|
common::ObCastCtx &cast_ctx,
|
|
common::ObCompareCtx &cmp_ctx,
|
|
const ObExprResType &res_type);
|
|
void set_need_cast(bool need_cast) {need_cast_ = need_cast;}
|
|
|
|
inline static int get_cmp_type(common::ObObjType &type,
|
|
const common::ObObjType &type1,
|
|
const common::ObObjType &type2,
|
|
const common::ObObjType &type3)
|
|
{
|
|
UNUSED(type3);
|
|
return ObExprResultTypeUtil::get_relational_cmp_type(type,type1,type2);
|
|
}
|
|
|
|
virtual int cg_expr(ObExprCGCtx &op_cg_ctx,
|
|
const ObRawExpr &raw_expr,
|
|
ObExpr &rt_expr) const;
|
|
private:
|
|
// disallow copy
|
|
DISALLOW_COPY_AND_ASSIGN(ObExprArgCase);
|
|
private:
|
|
bool need_cast_;
|
|
};
|
|
}
|
|
}
|
|
#endif // OCEANBASE_OB_SQL_EXPR_ARG_CASE_H_
|