| /** |
| * Copyright 2011-2015 Quickstep Technologies LLC. |
| * Copyright 2015 Pivotal Software, Inc. |
| * |
| * Licensed 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_QUERY_OPTIMIZER_LOGICAL_SHARED_SUBPLAN_REFERENCE_HPP_ |
| #define QUICKSTEP_QUERY_OPTIMIZER_LOGICAL_SHARED_SUBPLAN_REFERENCE_HPP_ |
| |
| #include <memory> |
| #include <string> |
| #include <vector> |
| |
| #include "query_optimizer/OptimizerTree.hpp" |
| #include "query_optimizer/expressions/AttributeReference.hpp" |
| #include "query_optimizer/logical/Logical.hpp" |
| #include "query_optimizer/logical/LogicalType.hpp" |
| #include "utility/Macros.hpp" |
| |
| namespace quickstep { |
| namespace optimizer { |
| namespace logical { |
| |
| /** \addtogroup OptimizerLogical |
| * @{ |
| */ |
| |
| class SharedSubplanReference; |
| typedef std::shared_ptr<const SharedSubplanReference> SharedSubplanReferencePtr; |
| |
| /** |
| * @brief A reference to a shared subplan stored in the TopLevelPlan node. |
| */ |
| class SharedSubplanReference : public Logical { |
| public: |
| LogicalType getLogicalType() const override { |
| return LogicalType::kSharedSubplanReference; |
| } |
| |
| std::string getName() const override { |
| return "SharedSubplanReference"; |
| } |
| |
| /** |
| * @return The ID of the shared subplan. |
| */ |
| int subplan_id() const { |
| return subplan_id_; |
| } |
| |
| /** |
| * @return The output attributes of the shared subplan. |
| */ |
| const std::vector<expressions::AttributeReferencePtr>& output_attributes() const { |
| return output_attributes_; |
| } |
| |
| std::vector<expressions::AttributeReferencePtr> getOutputAttributes() const override { |
| return output_attributes_; |
| } |
| |
| void getFieldStringItems( |
| std::vector<std::string> *inline_field_names, |
| std::vector<std::string> *inline_field_values, |
| std::vector<std::string> *non_container_child_field_names, |
| std::vector<OptimizerTreeBaseNodePtr> *non_container_child_fields, |
| std::vector<std::string> *container_child_field_names, |
| std::vector<std::vector<OptimizerTreeBaseNodePtr>> *container_child_fields) const override; |
| |
| LogicalPtr copyWithNewChildren(const std::vector<LogicalPtr> &new_children) const override; |
| |
| std::vector<expressions::AttributeReferencePtr> getReferencedAttributes() const override { |
| return output_attributes_; |
| } |
| |
| /** |
| * @brief Creates a SharedSubplanReference. |
| * |
| * @param subplan_id The ID of the shared subplan, which is the index of the referenced |
| * shared subplan in <shared_subplans_> of the TopLevelPlan. |
| * @param output_attributes The output attributes of the shared subplan. |
| * @return An immutable SharedSubplanReference. |
| */ |
| static SharedSubplanReferencePtr Create(int subplan_id, |
| const std::vector<expressions::AttributeReferencePtr> &output_attributes) { |
| return SharedSubplanReferencePtr(new SharedSubplanReference(subplan_id, output_attributes)); |
| } |
| |
| private: |
| SharedSubplanReference(int subplan_id, |
| const std::vector<expressions::AttributeReferencePtr> &output_attributes) |
| : subplan_id_(subplan_id), |
| output_attributes_(output_attributes) {} |
| |
| int subplan_id_; |
| std::vector<expressions::AttributeReferencePtr> output_attributes_; |
| |
| DISALLOW_COPY_AND_ASSIGN(SharedSubplanReference); |
| }; |
| |
| /** @} */ |
| |
| } // namespace logical |
| } // namespace optimizer |
| } // namespace quickstep |
| |
| #endif /* QUICKSTEP_QUERY_OPTIMIZER_LOGICAL_SHARED_SUBPLAN_REFERENCE_HPP_ */ |