82 lines
3.1 KiB
C++
82 lines
3.1 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 _OCEANBASE_SQL_OB_EXPR_PERIOD_DIFF_H_
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#define _OCEANBASE_SQL_OB_EXPR_PERIOD_DIFF_H_
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#include "sql/engine/expr/ob_expr_operator.h"
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#include "lib/ob_name_def.h"
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#include "share/object/ob_obj_cast.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 ObExprPeriodDiff : public ObFuncExprOperator
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{
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public:
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explicit ObExprPeriodDiff(common::ObIAllocator &alloc);
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virtual ~ObExprPeriodDiff();
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virtual int calc_result_type2(ObExprResType &type,
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ObExprResType &left,
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ObExprResType &right,
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common::ObExprTypeCtx &type_ctx) const;
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template <typename T>
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static int calc(T &result, const T &left, const T &right);
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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_perioddiff(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &expr_datum);
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private:
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// disallow copy
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DISALLOW_COPY_AND_ASSIGN(ObExprPeriodDiff);
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};
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inline int ObExprPeriodDiff::calc_result_type2(ObExprResType &type,
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ObExprResType &left,
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ObExprResType &right,
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common::ObExprTypeCtx &type_ctx) const
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{
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type.set_int();
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type.set_scale(common::ObAccuracy::DDL_DEFAULT_ACCURACY[common::ObIntType].scale_);
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type.set_precision(common::ObAccuracy::DDL_DEFAULT_ACCURACY[common::ObIntType].precision_);
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left.set_calc_type(common::ObUInt64Type);
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right.set_calc_type(common::ObUInt64Type);
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type_ctx.set_cast_mode(type_ctx.get_cast_mode() | CM_STRING_INTEGER_TRUNC);
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return common::OB_SUCCESS;
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}
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class ObExprPeriodAdd : public ObFuncExprOperator
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{
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public:
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explicit ObExprPeriodAdd(common::ObIAllocator &alloc);
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virtual ~ObExprPeriodAdd();
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virtual int calc_result_type2(ObExprResType &type,
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ObExprResType &left,
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ObExprResType &right,
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common::ObExprTypeCtx &type_ctx) const;
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template <typename T>
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static int calc(T &result, const T &left, const T &right);
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virtual common::ObCastMode get_cast_mode() const { return CM_STRING_INTEGER_TRUNC;}
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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_periodadd(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &expr_datum);
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private:
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// disallow copy
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DISALLOW_COPY_AND_ASSIGN(ObExprPeriodAdd);
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};
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} //sql
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} //oceanbase
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#endif //_OCEANBASE_SQL_OB_EXPR_PERIOD_DIFF_H_
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