| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| **/ |
| |
| #ifndef QUICKSTEP_RELATIONAL_OPERATORS_DROP_TABLE_OPERATOR_HPP_ |
| #define QUICKSTEP_RELATIONAL_OPERATORS_DROP_TABLE_OPERATOR_HPP_ |
| |
| #include <cstddef> |
| #include <string> |
| #include <utility> |
| #include <vector> |
| |
| #include "catalog/CatalogTypedefs.hpp" |
| #include "relational_operators/RelationalOperator.hpp" |
| #include "relational_operators/WorkOrder.hpp" |
| #include "storage/StorageBlockInfo.hpp" |
| #include "utility/Macros.hpp" |
| |
| #include "glog/logging.h" |
| |
| #include "tmb/id_typedefs.h" |
| |
| namespace tmb { class MessageBus; } |
| |
| namespace quickstep { |
| |
| class CatalogDatabase; |
| class CatalogDatabaseLite; |
| class CatalogRelation; |
| class QueryContext; |
| class StorageManager; |
| class WorkOrderProtosContainer; |
| class WorkOrdersContainer; |
| |
| /** \addtogroup RelationalOperators |
| * @{ |
| */ |
| |
| /** |
| * @brief An operator which drops a relation. |
| **/ |
| class DropTableOperator : public RelationalOperator { |
| public: |
| /** |
| * @brief Constructor. |
| * |
| * @param query_id The ID of the query to which this operator belongs. |
| * @param relation The relation to drop. |
| * @param database The databse where to drop \c relation. |
| * @param only_drop_blocks If true, only drop the blocks belonging to \c |
| * relation, but leave \c relation in \c database. |
| **/ |
| DropTableOperator(const std::size_t query_id, |
| const CatalogRelation &relation, |
| CatalogDatabase *database, |
| const bool only_drop_blocks = false) |
| : RelationalOperator(query_id), |
| relation_(relation), |
| database_(database), |
| only_drop_blocks_(only_drop_blocks), |
| work_generated_(false) {} |
| |
| ~DropTableOperator() override {} |
| |
| OperatorType getOperatorType() const override { |
| return kDropTable; |
| } |
| |
| std::string getName() const override { |
| return "DropTableOperator"; |
| } |
| |
| bool getAllWorkOrders(WorkOrdersContainer *container, |
| QueryContext *query_context, |
| StorageManager *storage_manager, |
| const tmb::client_id scheduler_client_id, |
| tmb::MessageBus *bus) override; |
| |
| bool getAllWorkOrderProtos(WorkOrderProtosContainer *container) override; |
| |
| void updateCatalogOnCompletion() override; |
| |
| private: |
| const CatalogRelation &relation_; |
| CatalogDatabase *database_; |
| const bool only_drop_blocks_; |
| |
| bool work_generated_; |
| |
| DISALLOW_COPY_AND_ASSIGN(DropTableOperator); |
| }; |
| |
| /** |
| * @brief A WorkOrder produced by DropTableOperator. |
| **/ |
| class DropTableWorkOrder : public WorkOrder { |
| public: |
| /** |
| * @brief Constructor. |
| * |
| * @param query_id The ID of the query to which this operator belongs. |
| * @param blocks The blocks to drop. |
| * @param storage_manager The StorageManager to use. |
| * @param rel_id The relation id to drop. |
| * @param catalog_database_cache The CatalogDatabaseCache in the distributed |
| * version. |
| **/ |
| DropTableWorkOrder(const std::size_t query_id, |
| std::vector<block_id> &&blocks, |
| StorageManager *storage_manager, |
| const relation_id rel_id = kInvalidCatalogId, |
| CatalogDatabaseLite *catalog_database_cache = nullptr) |
| : WorkOrder(query_id), |
| blocks_(std::move(blocks)), |
| storage_manager_(DCHECK_NOTNULL(storage_manager)), |
| rel_id_(rel_id), |
| catalog_database_cache_(catalog_database_cache) {} |
| |
| ~DropTableWorkOrder() override {} |
| |
| void execute() override; |
| |
| private: |
| const std::vector<block_id> blocks_; |
| StorageManager *storage_manager_; |
| |
| // Used in the distributed version. |
| const relation_id rel_id_; |
| CatalogDatabaseLite *catalog_database_cache_; |
| |
| DISALLOW_COPY_AND_ASSIGN(DropTableWorkOrder); |
| }; |
| |
| /** @} */ |
| |
| } // namespace quickstep |
| |
| #endif // QUICKSTEP_RELATIONAL_OPERATORS_DROP_TABLE_OPERATOR_HPP_ |