69 lines
2.4 KiB
C++
69 lines
2.4 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_OB_EXPR_REGEXP_
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#define OCEANBASE_SQL_ENGINE_EXPR_OB_EXPR_REGEXP_
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#include "lib/string/ob_string.h"
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#include "sql/engine/expr/ob_expr_regexp_context.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 ObExprRegexp : public ObFuncExprOperator
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{
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OB_UNIS_VERSION_V(1);
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public:
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explicit ObExprRegexp(common::ObIAllocator &alloc);
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virtual ~ObExprRegexp();
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virtual int assign(const ObExprOperator &other);
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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 inline void reset()
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{
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regexp_idx_ = common::OB_COMPACT_INVALID_INDEX;
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pattern_is_const_ = false;
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value_is_const_ = false;
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ObFuncExprOperator::reset();
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}
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inline int16_t get_regexp_idx() const { return regexp_idx_; }
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inline void set_regexp_idx(int16_t regexp_idx) { regexp_idx_ = regexp_idx; }
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inline void set_pattern_is_const(bool pattern_is_const) { pattern_is_const_ = pattern_is_const; }
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inline void set_value_is_const(bool value_is_const) { value_is_const_ = value_is_const; }
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virtual bool need_rt_ctx() const override { return true; }
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virtual int cg_expr(ObExprCGCtx &op_cg_ctx,
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const ObRawExpr &raw_expr,
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ObExpr &rt_expr) const override;
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static int eval_regexp(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &expr_datum);
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private:
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inline int need_fast_calc(common::ObExprCtx &expr_ctx, bool &result) const;
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private:
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int16_t regexp_idx_; // idx of posix_regexp_list_ in plan ctx, for regexp operator
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bool pattern_is_const_;
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bool value_is_const_;
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private:
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// disallow copy
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ObExprRegexp(const ObExprRegexp &other);
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ObExprRegexp &operator=(const ObExprRegexp &ohter);
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};
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}
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}
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#endif /* OCEANBASE_SQL_ENGINE_EXPR_OB_EXPR_REGEXP_ */
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