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src/sql/engine/expr/ob_expr_abs.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 OCEANBASE_SQL_ENGINE_EXPR_OB_EXPR_ABS_
#define OCEANBASE_SQL_ENGINE_EXPR_OB_EXPR_ABS_
#include "sql/engine/expr/ob_expr_operator.h"
namespace oceanbase {
namespace sql {
class ObExprAbs : public ObExprOperator {
typedef int (*abs_func)(common::ObObj& res, const common::ObObj& param, common::ObExprCtx& expr_ctx);
public:
virtual int deserialize(const char* buf, const int64_t data_len, int64_t& pos);
public:
explicit ObExprAbs(common::ObIAllocator& alloc);
~ObExprAbs(){};
virtual int calc_result_type1(ObExprResType& type, ObExprResType& type1, common::ObExprTypeCtx& type_ctx) const;
virtual int calc_result1(common::ObObj& result, const common::ObObj& obj, common::ObExprCtx& expr_ctx) const;
int set_func(common::ObObjType param_type);
virtual int assign(const ObExprOperator& other);
virtual int cg_expr(ObExprCGCtx& expr_cg_ctx, const ObRawExpr& raw_expr, ObExpr& rt_expr) const override;
private:
int set_func_mysql(common::ObObjType param_type);
int set_func_oracle(common::ObObjType param_type);
// tinyint, mediumint, smallint, int32
static int abs_int(common::ObObj& res, const common::ObObj& param, common::ObExprCtx& expr_ctx);
// int64
static int abs_int64(common::ObObj& res, const common::ObObj& param, common::ObExprCtx& expr_ctx);
// utiniyint, umediumint, usmallint
static int abs_uint(common::ObObj& res, const common::ObObj& param, common::ObExprCtx& expr_ctx);
// uint32 uint64
static int abs_uint32_uint64(common::ObObj& res, const common::ObObj& param, common::ObExprCtx& expr_ctx);
// float
static int abs_float(common::ObObj& res, const common::ObObj& param, common::ObExprCtx& expr_ctx);
static int abs_float_double(common::ObObj& res, const common::ObObj& param, common::ObExprCtx& expr_ctx);
// double
static int abs_double(common::ObObj& res, const common::ObObj& param, common::ObExprCtx& expr_ctx);
// ufloat
static int abs_ufloat_udouble(common::ObObj& res, const common::ObObj& param, common::ObExprCtx& expr_ctx);
// udouble
static int abs_udouble(common::ObObj& res, const common::ObObj& param, common::ObExprCtx& expr_ctx);
// number
static int abs_number(common::ObObj& res, const common::ObObj& param, common::ObExprCtx& expr_ctx);
// unumber
static int abs_unumber(common::ObObj& res, const common::ObObj& param, common::ObExprCtx& expr_ctx);
// null
static int abs_null(common::ObObj& res, const common::ObObj& param, common::ObExprCtx& expr_ctx);
// hexstring
static int abs_hexstring(common::ObObj& res, const common::ObObj& param, common::ObExprCtx& expr_ctx);
// year
static int abs_year(common::ObObj& res, const common::ObObj& param, common::ObExprCtx& expr_ctx);
// others(datetime, time, varchar,etc)
static int abs_others_double(common::ObObj& res, const common::ObObj& param, common::ObExprCtx& expr_ctx);
static int abs_others_number(common::ObObj& res, const common::ObObj& param, common::ObExprCtx& expr_ctx);
// bit
static int abs_bit(common::ObObj& res, const common::ObObj& param, common::ObExprCtx& expr_ctx);
// bit
static int abs_enum_set(common::ObObj& res, const common::ObObj& param, common::ObExprCtx& expr_ctx);
static common::ObObjType calc_param_type(const common::ObObjType orig_param_type, const bool is_oracle_mode);
private:
DISALLOW_COPY_AND_ASSIGN(ObExprAbs);
private:
abs_func func_;
};
} // namespace sql
} // namespace oceanbase
#endif // OCEANBASE_SQL_ENGINE_EXPR_OB_EXPR_ABS_