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src/sql/engine/ob_des_exec_context.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_ENGINE_OB_DES_EXEC_CONTEXT_
+#define OCEANBASE_SQL_ENGINE_OB_DES_EXEC_CONTEXT_
+
+#include "sql/engine/ob_exec_context.h"
+#include "sql/session/ob_sql_session_mgr.h"
+
+namespace oceanbase {
+namespace sql {
+class ObDesExecContext : public ObExecContext {
+  public:
+  explicit ObDesExecContext(ObSQLSessionMgr* session_mgr);
+  ObDesExecContext(common::ObIAllocator& allocator, ObSQLSessionMgr* session_mgr);
+  virtual ~ObDesExecContext();
+  int create_my_session(uint64_t tenant_id);
+  virtual int deserialize(const char* buf, const int64_t data_len, int64_t& pos);
+  void cleanup_session();
+  void show_session();
+  void hide_session();
+
+  protected:
+  ObFreeSessionCtx free_session_ctx_;
+
+  private:
+  DISALLOW_COPY_AND_ASSIGN(ObDesExecContext);
+};
+
+class ObDistributedExecContext : public ObDesExecContext {
+  public:
+  explicit ObDistributedExecContext(ObSQLSessionMgr* session_mgr);
+  ObDistributedExecContext(common::ObIAllocator& allocator, ObSQLSessionMgr* session_mgr);
+  virtual ~ObDistributedExecContext();
+  VIRTUAL_NEED_SERIALIZE_AND_DESERIALIZE;
+
+  private:
+  const char* phy_plan_ctx_buf_;
+  int64_t phy_plan_ctx_len_;
+  const char* my_session_buf_;
+  int64_t my_session_len_;
+  const char* task_executor_ctx_buf_;
+  int64_t task_executor_ctx_len_;
+  DISALLOW_COPY_AND_ASSIGN(ObDistributedExecContext);
+};
+
+}  // namespace sql
+}  // namespace oceanbase
+#endif /* OCEANBASE_SQL_ENGINE_OB_DES_EXEC_CONTEXT_ */