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src/sql/optimizer/ob_log_sequence.h

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+/**
+ * Copyright (c) 2021 OceanBase
+ * OceanBase CE is licensed under Mulan PubL v2.
+ * You can use this software according to the terms and conditions of the Mulan PubL v2.
+ * You may obtain a copy of Mulan PubL v2 at:
+ *          http://license.coscl.org.cn/MulanPubL-2.0
+ * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+ * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+ * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+ * See the Mulan PubL v2 for more details.
+ */
+
+#ifndef OCEANBASE_SQL_OB_LOG_SEQUENCE_H
+#define OCEANBASE_SQL_OB_LOG_SEQUENCE_H
+#include "sql/optimizer/ob_logical_operator.h"
+#include "sql/optimizer/ob_log_set.h"
+namespace oceanbase {
+namespace sql {
+class ObLogSequence : public ObLogicalOperator {
+  private:
+  typedef common::ObSEArray<uint64_t, 4> SequenceIdArray;
+
+  public:
+  ObLogSequence(ObLogPlan& plan) : ObLogicalOperator(plan)
+  {}
+  virtual ~ObLogSequence()
+  {}
+  virtual uint64_t hash(uint64_t seed) const;
+  virtual int copy_without_child(ObLogicalOperator*& out);
+  virtual int print_my_plan_annotation(char* buf, int64_t& buf_len, int64_t& pos, ExplainType type);
+  int allocate_exchange_post(AllocExchContext* ctx) override;
+  const common::ObIArray<uint64_t>& get_sequence_ids() const
+  {
+    return nextval_seq_ids_;
+  }
+  common::ObIArray<uint64_t>& get_sequence_ids()
+  {
+    return nextval_seq_ids_;
+  }
+  virtual int est_cost() override;
+
+  private:
+  SequenceIdArray nextval_seq_ids_;
+};
+}  // namespace sql
+}  // namespace oceanbase
+#endif  // OCEANBASE_SQL_OB_LOG_SEQUENCE_H