39 lines
1.6 KiB
C++
39 lines
1.6 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_EXPR_CHR_
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#define OCEANBASE_SQL_ENGINE_EXPR_CHR_
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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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class ObExprChr : public ObStringExprOperator {
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public:
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explicit ObExprChr(common::ObIAllocator& alloc);
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virtual ~ObExprChr();
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virtual int calc_result_type1(ObExprResType& type, ObExprResType& text, common::ObExprTypeCtx& type_ctx) const;
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static int calc(common::ObObj& result, const common::ObObj& text, common::ObIAllocator& alloc);
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virtual int calc_result1(common::ObObj& result, const common::ObObj& text, 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;
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static int number2varchar(common::ObString& str_result, const double text, common::ObIAllocator& alloc);
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static int calc_chr_expr(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& res_datum);
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private:
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DISALLOW_COPY_AND_ASSIGN(ObExprChr);
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};
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} // end namespace sql
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} // end namespace oceanbase
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#endif /* OCEANBASE_SQL_ENGINE_EXPR_CHR_ */
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