88 lines
3.5 KiB
C++
88 lines
3.5 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 SQL_ENGINE_EXPR_OB_EXPR_TO_NUMBER_BASE_H_
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#define SQL_ENGINE_EXPR_OB_EXPR_TO_NUMBER_BASE_H_
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#include "share/object/ob_obj_cast.h"
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#include "sql/engine/expr/ob_expr_operator.h"
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#include "sql/session/ob_sql_session_info.h"
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namespace oceanbase {
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namespace sql {
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class ObExprToNumberBase : public ObFuncExprOperator {
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public:
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explicit ObExprToNumberBase(common::ObIAllocator& alloc, const ObExprOperatorType type, const char* name);
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virtual ~ObExprToNumberBase();
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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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private:
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DISALLOW_COPY_AND_ASSIGN(ObExprToNumberBase);
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};
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class ObExprToNumber : public ObExprToNumberBase {
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public:
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explicit ObExprToNumber(common::ObIAllocator& alloc);
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virtual ~ObExprToNumber();
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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 override;
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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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static int calc_(const ObString& in_str, const ObString& in_fmt_str, ObIAllocator& alloc, number::ObNumber& res_nmb);
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// for engine 3.0
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static int calc_tonumber_expr(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& res_datum);
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private:
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DISALLOW_COPY_AND_ASSIGN(ObExprToNumber);
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};
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class ObExprToBinaryFloat : public ObExprToNumberBase {
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public:
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explicit ObExprToBinaryFloat(common::ObIAllocator& alloc);
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virtual ~ObExprToBinaryFloat();
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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 override;
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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 override;
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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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static int calc_(const ObString& in_str, const ObString& in_fmt_str, ObIAllocator& alloc, number::ObNumber& res_nmb);
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static int calc_to_binaryfloat_expr(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& res_datum);
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private:
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DISALLOW_COPY_AND_ASSIGN(ObExprToBinaryFloat);
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};
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class ObExprToBinaryDouble : public ObExprToNumberBase {
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public:
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explicit ObExprToBinaryDouble(common::ObIAllocator& alloc);
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virtual ~ObExprToBinaryDouble();
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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 override;
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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 override;
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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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static int calc_to_binarydouble_expr(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& res_datum);
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private:
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DISALLOW_COPY_AND_ASSIGN(ObExprToBinaryDouble);
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};
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} /* namespace sql */
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} /* namespace oceanbase */
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#endif /* SQL_ENGINE_EXPR_OB_EXPR_TO_NUMBER_BASE_H_ */
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