121 lines
4.2 KiB
C++
121 lines
4.2 KiB
C++
/**
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* Copyright (c) 2021 OceanBase
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* OceanBase CE is licensed under Mulan PubL v2.
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* You can use this software according to the terms and conditions of the Mulan PubL v2.
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* You may obtain a copy of Mulan PubL v2 at:
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* http://license.coscl.org.cn/MulanPubL-2.0
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PubL v2 for more details.
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*/
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#ifndef _OB_SQL_EXPR_DATE_ADD_H_
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#define _OB_SQL_EXPR_DATE_ADD_H_
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#include "sql/engine/expr/ob_expr_operator.h"
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namespace oceanbase
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{
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namespace sql
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{
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class ObExprDateAdjust : public ObFuncExprOperator
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{
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public:
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ObExprDateAdjust(common::ObIAllocator &alloc,
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ObExprOperatorType type,
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const char *name,
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int32_t param_num,
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int32_t dimension = NOT_ROW_DIMENSION);
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virtual ~ObExprDateAdjust();
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virtual int calc_result_type3(ObExprResType &type,
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ObExprResType &date,
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ObExprResType &interval,
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ObExprResType &unit,
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common::ObExprTypeCtx &type_ctx) const;
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static int calc_date_adjust(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &expr_datum, bool is_add);
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private:
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DISALLOW_COPY_AND_ASSIGN(ObExprDateAdjust);
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};
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class ObExprDateAdd : public ObExprDateAdjust
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{
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public:
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explicit ObExprDateAdd(common::ObIAllocator &alloc);
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virtual ~ObExprDateAdd() {};
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virtual int cg_expr(ObExprCGCtx &op_cg_ctx,
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const ObRawExpr &raw_expr,
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ObExpr &rt_expr) const override;
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static int calc_date_add(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &expr_datum);
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private:
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DISALLOW_COPY_AND_ASSIGN(ObExprDateAdd);
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};
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class ObExprDateSub : public ObExprDateAdjust
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{
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public:
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explicit ObExprDateSub(common::ObIAllocator &alloc);
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virtual ~ObExprDateSub() {};
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virtual int cg_expr(ObExprCGCtx &op_cg_ctx,
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const ObRawExpr &raw_expr,
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ObExpr &rt_expr) const override;
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static int calc_date_sub(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &expr_datum);
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private:
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DISALLOW_COPY_AND_ASSIGN(ObExprDateSub);
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};
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class ObExprAddMonths : public ObFuncExprOperator
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{
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public:
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explicit ObExprAddMonths(common::ObIAllocator &alloc);
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virtual ~ObExprAddMonths() {}
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virtual int calc_result_type2(ObExprResType &type,
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ObExprResType &type1,
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ObExprResType &type2,
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common::ObExprTypeCtx &type_ctx) const;
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virtual int cg_expr(ObExprCGCtx &op_cg_ctx,
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const ObRawExpr &raw_expr,
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ObExpr &rt_expr) const override;
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static int calc_add_months(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &expr_datum);
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private:
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DISALLOW_COPY_AND_ASSIGN(ObExprAddMonths);
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};
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class ObExprLastDay : public ObFuncExprOperator
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{
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public:
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explicit ObExprLastDay(common::ObIAllocator &alloc);
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virtual ~ObExprLastDay() {}
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virtual int calc_result_type1(ObExprResType &type,
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ObExprResType &type1,
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common::ObExprTypeCtx &type_ctx) const;
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virtual int cg_expr(ObExprCGCtx &op_cg_ctx,
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const ObRawExpr &raw_expr,
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ObExpr &rt_expr) const override;
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static int calc_last_day(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &expr_datum);
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private:
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DISALLOW_COPY_AND_ASSIGN(ObExprLastDay);
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};
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class ObExprNextDay : public ObFuncExprOperator
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{
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public:
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explicit ObExprNextDay(common::ObIAllocator &alloc);
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virtual ~ObExprNextDay() {}
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virtual int calc_result_type2(ObExprResType &type,
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ObExprResType &type1,
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ObExprResType &type2,
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common::ObExprTypeCtx &type_ctx) const;
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virtual int cg_expr(ObExprCGCtx &op_cg_ctx,
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const ObRawExpr &raw_expr,
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ObExpr &rt_expr) const override;
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static int calc_next_day(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &expr_datum);
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private:
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DISALLOW_COPY_AND_ASSIGN(ObExprNextDay);
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};
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} //sql
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} //oceanbase
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#endif //_OCEANBASE_SQL_OB_EXPR_DATE_ADD_H_
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