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src/sql/optimizer/ob_log_material.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_MATERIAL_H_
+#define OCEANBASE_SQL_OB_LOG_MATERIAL_H_
+
+#include "sql/optimizer/ob_logical_operator.h"
+
+namespace oceanbase {
+namespace sql {
+class ObLogMaterial : public ObLogicalOperator {
+  public:
+  ObLogMaterial(ObLogPlan& plan) : ObLogicalOperator(plan)
+  {}
+  virtual ~ObLogMaterial()
+  {}
+  virtual int copy_without_child(ObLogicalOperator*& out)
+  {
+    return clone(out);
+  }
+  virtual int allocate_exchange_post(AllocExchContext* ctx) override;
+  int allocate_exchange(AllocExchContext* ctx, ObExchangeInfo& exch_info) override;
+  virtual int est_cost() override;
+  virtual int re_est_cost(const ObLogicalOperator* parent, double need_row_count, bool& re_est) override;
+  virtual bool is_block_op() const override
+  {
+    return true;
+  }
+
+  private:
+  DISALLOW_COPY_AND_ASSIGN(ObLogMaterial);
+};
+}  // namespace sql
+}  // namespace oceanbase
+
+#endif  // OCEANBASE_SQL_OB_LOG_MATERIAL_H_