44 lines
1.6 KiB
C++
44 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_OB_LOG_SEQUENCE_H
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#define OCEANBASE_SQL_OB_LOG_SEQUENCE_H
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#include "sql/optimizer/ob_logical_operator.h"
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#include "sql/optimizer/ob_log_set.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 ObLogSequence : public ObLogicalOperator
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{
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private:
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typedef common::ObSEArray<uint64_t, 4> SequenceIdArray;
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public:
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ObLogSequence(ObLogPlan &plan) : ObLogicalOperator(plan) {}
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virtual ~ObLogSequence() {}
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virtual int get_op_exprs(ObIArray<ObRawExpr*> &all_exprs) override;
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virtual int is_my_fixed_expr(const ObRawExpr *expr, bool &is_fixed) override;
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const common::ObIArray<uint64_t> &get_sequence_ids() const
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{ return nextval_seq_ids_; }
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common::ObIArray<uint64_t> &get_sequence_ids()
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{ return nextval_seq_ids_; }
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virtual int est_cost() override;
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virtual int est_width() override;
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virtual int do_re_est_cost(EstimateCostInfo ¶m, double &card, double &op_cost, double &cost) override;
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virtual int compute_op_parallel_and_server_info() override;
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private:
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SequenceIdArray nextval_seq_ids_;
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};
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}
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}
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#endif // OCEANBASE_SQL_OB_LOG_SEQUENCE_H
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