55 lines
2.0 KiB
C++
55 lines
2.0 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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#include "sql/engine/expr/ob_expr_operator.h"
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#ifndef SRC_SQL_ENGINE_EXPR_OB_EXPR_CONVERT_H_
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#define SRC_SQL_ENGINE_EXPR_OB_EXPR_CONVERT_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 ObExprConvert : public ObFuncExprOperator
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{
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public:
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explicit ObExprConvert(common::ObIAllocator &alloc);
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virtual ~ObExprConvert();
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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 &expr_cg_ctx, const ObRawExpr &raw_expr,
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ObExpr &rt_expr) const override;
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virtual common::ObCastMode get_cast_mode() const override { return CM_CHARSET_CONVERT_IGNORE_ERR; };
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private:
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DISALLOW_COPY_AND_ASSIGN(ObExprConvert);
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};
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class ObExprConvertOracle : public ObStringExprOperator
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{
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public:
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explicit ObExprConvertOracle(common::ObIAllocator &alloc);
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virtual ~ObExprConvertOracle();
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virtual int calc_result_typeN(ObExprResType &type,
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ObExprResType *types_array,
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int64_t param_num,
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common::ObExprTypeCtx &type_ctx) const;
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virtual int cg_expr(ObExprCGCtx &op_cg_ctx, const ObRawExpr &raw_expr, ObExpr &rt_expr) const;
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static int calc_convert_oracle_expr(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &res_datum);
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private:
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DISALLOW_COPY_AND_ASSIGN(ObExprConvertOracle);
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};
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}
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}
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#endif /* SRC_SQL_ENGINE_EXPR_OB_EXPR_CONVERT_H_ */
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