55 lines
2.5 KiB
C++
55 lines
2.5 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_ENGINE_OB_SQL_EXPR_FUNC_ROUND_
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#define OCEANBASE_SQL_ENGINE_OB_SQL_EXPR_FUNC_ROUND_
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#include "sql/engine/expr/ob_expr_operator.h"
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namespace oceanbase {
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namespace sql {
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#define ROUND_MIN_SCALE -30
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#define ROUND_MAX_SCALE 30
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class ObExprFuncRound : public ObFuncExprOperator {
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public:
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explicit ObExprFuncRound(common::ObIAllocator& alloc);
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virtual ~ObExprFuncRound();
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virtual int calc_result_typeN(
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ObExprResType& type, ObExprResType* types, int64_t param_num, common::ObExprTypeCtx& type_ctx) const;
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virtual int calc_resultN(
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common::ObObj& result, const common::ObObj* objs, int64_t param_num, common::ObExprCtx& expr_ctx) const;
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virtual int cg_expr(ObExprCGCtx& expr_cg_ctx, const ObRawExpr& raw_expr, ObExpr& rt_expr) const override;
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private:
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int calc_result1(common::ObObj& result, const common::ObObj& input, common::ObExprCtx& expr_ctx) const;
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int calc_result2(
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common::ObObj& result, const common::ObObj& input, const common::ObObj& param, common::ObExprCtx& expr_ctx) const;
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int set_round_val(common::number::ObNumber& nmb, common::ObObj& result, common::ObExprCtx& cast_ctx) const;
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int calc_with_date(common::ObObj& result, const common::ObObj& source, const common::ObObj& format,
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common::ObExprCtx& expr_ctx) const;
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int calc_with_decimal(
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common::ObObj& result, const common::ObObj& input, const common::ObObj& param, common::ObExprCtx& expr_ctx) const;
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// engine 3.0
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int se_deduce_type(
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ObExprResType& type, ObExprResType* params, int64_t param_num, common::ObExprTypeCtx& type_ctx) const;
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static int set_res_scale_prec(common::ObExprTypeCtx& type_ctx, ObExprResType* params, int64_t param_num,
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const common::ObObjType& res_type, ObExprResType& type);
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static int set_res_and_calc_type(ObExprResType* params, int64_t param_num, common::ObObjType& res_type);
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// disallow copy
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DISALLOW_COPY_AND_ASSIGN(ObExprFuncRound);
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};
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} // namespace sql
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} // namespace oceanbase
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#endif // OCEANBASE_SQL_ENGINE_OB_SQL_EXPR_FUNC_ROUND_
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