ob_database_executor.h

/**
 * 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_SRC_SQL_ENGINE_CMD_OB_DATABASE_EXECUTOR_H_
#define OCEANBASE_SRC_SQL_ENGINE_CMD_OB_DATABASE_EXECUTOR_H_
#include "share/ob_define.h"
#include "share/schema/ob_schema_getter_guard.h"

namespace oceanbase {
namespace sql {
class ObExecContext;
class ObCreateDatabaseStmt;
class ObDropDatabaseStmt;
class ObUseDatabaseStmt;
class ObAlterDatabaseStmt;
class ObFlashBackDatabaseStmt;
class ObPurgeDatabaseStmt;
class ObCreateDatabaseExecutor {
  public:
  ObCreateDatabaseExecutor();
  virtual ~ObCreateDatabaseExecutor();
  int execute(ObExecContext& ctx, ObCreateDatabaseStmt& stmt);

  private:
  DISALLOW_COPY_AND_ASSIGN(ObCreateDatabaseExecutor);
};

///////////////////////
class ObUseDatabaseExecutor {
  public:
  ObUseDatabaseExecutor();
  virtual ~ObUseDatabaseExecutor();
  int execute(ObExecContext& ctx, ObUseDatabaseStmt& stmt);

  private:
  DISALLOW_COPY_AND_ASSIGN(ObUseDatabaseExecutor);
};

///////////////////////
class ObAlterDatabaseExecutor {
  public:
  ObAlterDatabaseExecutor();
  virtual ~ObAlterDatabaseExecutor();
  int execute(ObExecContext& ctx, ObAlterDatabaseStmt& stmt);

  private:
  DISALLOW_COPY_AND_ASSIGN(ObAlterDatabaseExecutor);
};

/////////////////////
class ObDropDatabaseExecutor {
  public:
  ObDropDatabaseExecutor();
  virtual ~ObDropDatabaseExecutor();
  int execute(ObExecContext& ctx, ObDropDatabaseStmt& stmt);

  private:
  DISALLOW_COPY_AND_ASSIGN(ObDropDatabaseExecutor);
};

/* *
 *
 * */
class ObFlashBackDatabaseExecutor {
  public:
  ObFlashBackDatabaseExecutor()
  {}
  virtual ~ObFlashBackDatabaseExecutor()
  {}
  int execute(ObExecContext& ctx, ObFlashBackDatabaseStmt& stmt);

  private:
  DISALLOW_COPY_AND_ASSIGN(ObFlashBackDatabaseExecutor);
};

class ObPurgeDatabaseExecutor {
  public:
  ObPurgeDatabaseExecutor()
  {}
  virtual ~ObPurgeDatabaseExecutor()
  {}
  int execute(ObExecContext& ctx, ObPurgeDatabaseStmt& stmt);

  private:
  DISALLOW_COPY_AND_ASSIGN(ObPurgeDatabaseExecutor);
};

}  // namespace sql
}  // namespace oceanbase
#endif /* OCEANBASE_SRC_SQL_ENGINE_CMD_OB_DATABASE_EXECUTOR_H_ */