| /** |
| * 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_WINDOW_AGGREGATION_OPERATOR_HPP_ |
| #define QUICKSTEP_RELATIONAL_OPERATORS_WINDOW_AGGREGATION_OPERATOR_HPP_ |
| |
| #include <string> |
| #include <vector> |
| |
| #include "catalog/CatalogRelation.hpp" |
| #include "query_execution/QueryContext.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 StorageManager; |
| class WindowAggregationOperationState; |
| class WorkOrderProtosContainer; |
| class WorkOrdersContainer; |
| |
| namespace serialization { class WorkOrder; } |
| |
| /** \addtogroup RelationalOperators |
| * @{ |
| */ |
| |
| /** |
| * @brief An operator which performs window aggregation over a relation. |
| **/ |
| class WindowAggregationOperator : public RelationalOperator { |
| public: |
| /** |
| * @brief Constructor. |
| * |
| * @param query_id The ID of this query. |
| * @param input_relation The relation to perform aggregation over. |
| * @param output_relation The relation for output. |
| * @param window_aggregation_state_index The index of WindowAggregationState |
| * in QueryContext. |
| * @param output_destination_index The index of InsertDestination in |
| * QueryContext for the output. |
| **/ |
| WindowAggregationOperator(const std::size_t query_id, |
| const CatalogRelation &input_relation, |
| const CatalogRelation &output_relation, |
| const QueryContext::window_aggregation_state_id window_aggregation_state_index, |
| const QueryContext::insert_destination_id output_destination_index) |
| : RelationalOperator(query_id), |
| input_relation_(input_relation), |
| output_relation_(output_relation), |
| window_aggregation_state_index_(window_aggregation_state_index), |
| output_destination_index_(output_destination_index), |
| generated_(false) {} |
| |
| ~WindowAggregationOperator() override {} |
| |
| OperatorType getOperatorType() const override { |
| return kWindowAggregation; |
| } |
| |
| std::string getName() const override { |
| return "WindowAggregationOperator"; |
| } |
| |
| 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; |
| |
| const relation_id getOutputRelationID() const override { |
| return output_relation_.getID(); |
| } |
| |
| QueryContext::insert_destination_id getInsertDestinationID() const override { |
| return output_destination_index_; |
| } |
| |
| private: |
| /** |
| * @brief Create Work Order proto. |
| * |
| * @return A window aggregation work order. |
| **/ |
| serialization::WorkOrder* createWorkOrderProto(); |
| |
| const CatalogRelation &input_relation_; |
| const CatalogRelation &output_relation_; |
| const QueryContext::window_aggregation_state_id window_aggregation_state_index_; |
| const QueryContext::insert_destination_id output_destination_index_; |
| bool generated_; |
| |
| DISALLOW_COPY_AND_ASSIGN(WindowAggregationOperator); |
| }; |
| |
| /** |
| * @brief A WorkOrder produced by WindowAggregationOperator. |
| **/ |
| class WindowAggregationWorkOrder : public WorkOrder { |
| public: |
| /** |
| * @brief Constructor |
| * |
| * @param query_id The ID of this query. |
| * @param state The WindowAggregationOperatorState to use. |
| * @param block_ids The blocks' id of the input relation. |
| * @param output_destination The InsertDestination for output. |
| **/ |
| WindowAggregationWorkOrder(const std::size_t query_id, |
| WindowAggregationOperationState *state, |
| std::vector<block_id> &&block_ids, |
| InsertDestination *output_destination) |
| : WorkOrder(query_id), |
| state_(state), |
| block_ids_(std::move(block_ids)), |
| output_destination_(output_destination) {} |
| |
| ~WindowAggregationWorkOrder() override {} |
| |
| void execute() override; |
| |
| private: |
| WindowAggregationOperationState *state_; |
| const std::vector<block_id> block_ids_; |
| InsertDestination *output_destination_; |
| |
| DISALLOW_COPY_AND_ASSIGN(WindowAggregationWorkOrder); |
| }; |
| |
| /** @} */ |
| |
| } // namespace quickstep |
| |
| #endif // QUICKSTEP_RELATIONAL_OPERATORS_WINDOW_AGGREGATION_OPERATOR_HPP_ |