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src/sql/engine/expr/ob_expr_is.h Normal file
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/**
* 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 _OB_EXPR_IS_H
#define _OB_EXPR_IS_H 1
#include "sql/engine/expr/ob_expr_operator.h"
namespace oceanbase {
namespace sql {
class ObConstRawExpr;
class ObExprIsBase : public ObRelationalExprOperator {
public:
// ObExprIsBase();
explicit ObExprIsBase(common::ObIAllocator& alloc, ObExprOperatorType type, const char* name);
virtual ~ObExprIsBase(){};
int calc_result3(common::ObObj& result, const common::ObObj& obj1, const common::ObObj& obj2,
const common::ObObj& obj3, common::ObExprCtx& expr_ctx) const;
int calc_with_int_internal(common::ObObj& result, const common::ObObj& obj1, const common::ObObj& obj2,
common::ObCastCtx& cast_ctx, bool is_not /* True if IS_NOT */) const;
int cg_expr_internal(ObExprCGCtx& op_cg_ctx, const ObRawExpr& raw_expr, ObExpr& rt_expr,
const ObConstRawExpr*& const_param2, const ObConstRawExpr*& const_param3) const;
int cg_result_type_class(common::ObObjType type, ObExpr::EvalFunc& eval_func, bool is_not, bool is_true) const;
int calc(common::ObObj& result, const common::ObObj& obj1, const common::ObObj& obj2, const common::ObObj& obj3,
common::ObCastCtx& cast_ctx) const;
int calc_result_type3(ObExprResType& type, ObExprResType& type1, ObExprResType& type2, ObExprResType& type3,
common::ObExprTypeCtx& type_ctx) const;
virtual int calc_with_null(common::ObObj& result, const common::ObObj& obj1, const common::ObObj& obj2,
const common::ObObj& obj3, common::ObCastCtx& cast_ctx) const = 0;
virtual int calc_with_int(common::ObObj& result, const common::ObObj& obj1, const common::ObObj& obj2,
common::ObCastCtx& cast_ctx) const = 0;
template <typename T>
static int is_zero(T number);
private:
// types and constants
private:
DISALLOW_COPY_AND_ASSIGN(ObExprIsBase);
// function members
private:
// data members
};
class ObExprIs : public ObExprIsBase {
public:
// ObExprIs() {}
explicit ObExprIs(common::ObIAllocator& alloc) : ObExprIsBase(alloc, T_OP_IS, N_IS){};
virtual ~ObExprIs(){};
virtual int calc_with_null(common::ObObj& result, const common::ObObj& obj1, const common::ObObj& obj2,
const common::ObObj& obj3, common::ObCastCtx& cast_ctx) const;
virtual int calc_with_int(
common::ObObj& result, const common::ObObj& obj1, const common::ObObj& obj2, common::ObCastCtx& cast_ctx) const;
virtual int cg_expr(ObExprCGCtx& op_cg_ctx, const ObRawExpr& raw_expr, ObExpr& rt_expr) const override;
static int calc_is_date_int_null(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum);
static int calc_is_null(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum);
static int int_is_true(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum);
static int int_is_false(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum);
static int float_is_true(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum);
static int float_is_false(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum);
static int double_is_true(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum);
static int double_is_false(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum);
static int number_is_true(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum);
static int number_is_false(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum);
private:
// types and constants
private:
DISALLOW_COPY_AND_ASSIGN(ObExprIs);
// function members
private:
// data members
};
class ObExprIsNot : public ObExprIsBase {
public:
explicit ObExprIsNot(common::ObIAllocator& alloc) : ObExprIsBase(alloc, T_OP_IS_NOT, N_IS_NOT){};
virtual ~ObExprIsNot(){};
virtual int calc_with_null(common::ObObj& result, const common::ObObj& obj1, const common::ObObj& obj2,
const common::ObObj& obj3, common::ObCastCtx& cast_ctx) const;
virtual int calc_with_int(
common::ObObj& result, const common::ObObj& obj1, const common::ObObj& obj2, common::ObCastCtx& cast_ctx) const;
virtual int cg_expr(ObExprCGCtx& op_cg_ctx, const ObRawExpr& raw_expr, ObExpr& rt_expr) const override;
static int calc_is_not_null(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum);
static int int_is_not_true(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum);
static int int_is_not_false(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum);
static int float_is_not_true(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum);
static int float_is_not_false(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum);
static int double_is_not_true(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum);
static int double_is_not_false(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum);
static int number_is_not_true(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum);
static int number_is_not_false(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum);
private:
// types and constants
private:
DISALLOW_COPY_AND_ASSIGN(ObExprIsNot);
// function members
private:
// data members
};
} // end namespace sql
} // end namespace oceanbase
#endif /* _OB_EXPR_IS_H */