| /** |
| * 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_QUERY_OPTIMIZER_PHYSICAL_JOIN_HPP_ |
| #define QUICKSTEP_QUERY_OPTIMIZER_PHYSICAL_JOIN_HPP_ |
| |
| #include <memory> |
| #include <vector> |
| |
| #include "query_optimizer/expressions/AttributeReference.hpp" |
| #include "query_optimizer/expressions/ExpressionUtil.hpp" |
| #include "query_optimizer/expressions/NamedExpression.hpp" |
| #include "query_optimizer/physical/Physical.hpp" |
| #include "utility/Macros.hpp" |
| |
| namespace quickstep { |
| namespace optimizer { |
| namespace physical { |
| |
| /** \addtogroup OptimizerPhysical |
| * @{ |
| */ |
| |
| class Join; |
| typedef std::shared_ptr<const Join> JoinPtr; |
| |
| struct PartitionSchemeHeader; |
| |
| /** |
| * @brief Base class for physical join nodes. |
| */ |
| class Join : public Physical { |
| public: |
| /** |
| * @brief Destructor. |
| */ |
| ~Join() override {} |
| |
| /** |
| * @brief Gets the project expressions. |
| * |
| * @return The list of project expressions. |
| */ |
| const std::vector<expressions::NamedExpressionPtr>& project_expressions() const { |
| return project_expressions_; |
| } |
| |
| std::vector<expressions::AttributeReferencePtr> getOutputAttributes() const override { |
| return expressions::ToRefVector(project_expressions_); |
| } |
| |
| protected: |
| /** |
| * @brief Constructor. |
| * |
| * @param project_expressions The project expressions. |
| * @param has_repartition Whether this node has repartition. |
| * @param partition_scheme_header The optional output partition scheme header. |
| */ |
| explicit Join( |
| const std::vector<expressions::NamedExpressionPtr>& project_expressions, |
| const bool has_repartition = false, |
| PartitionSchemeHeader *partition_scheme_header = nullptr) |
| : Physical(has_repartition, partition_scheme_header), |
| project_expressions_(project_expressions) {} |
| |
| private: |
| std::vector<expressions::NamedExpressionPtr> project_expressions_; |
| |
| DISALLOW_COPY_AND_ASSIGN(Join); |
| }; |
| |
| /** @} */ |
| |
| } // namespace physical |
| } // namespace optimizer |
| } // namespace quickstep |
| |
| #endif /* QUICKSTEP_QUERY_OPTIMIZER_PHYSICAL_JOIN_HPP_ */ |