38 lines
1.0 KiB
C++
38 lines
1.0 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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#ifndef _OB_EXPR_GENERATOR_H
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#define _OB_EXPR_GENERATOR_H 1
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#include "sql/resolver/expr/ob_raw_expr.h"
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#include "sql/engine/expr/ob_sql_expression.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 ObExprGenerator
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{
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public:
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ObExprGenerator(){}
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virtual ~ObExprGenerator(){}
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virtual int generate(ObRawExpr &raw_expr, ObSqlExpression &out_expr) = 0;
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private:
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// disallow copy
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DISALLOW_COPY_AND_ASSIGN(ObExprGenerator);
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};
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} // end namespace sql
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} // end namespace oceanbase
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#endif /* _OB_EXPR_GENERATOR_H */
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