| /** |
| * 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_TO_PHYSICAL_MAPPER_HPP_ |
| #define QUICKSTEP_QUERY_OPTIMIZER_LOGICAL_TO_PHYSICAL_MAPPER_HPP_ |
| |
| #include "query_optimizer/logical/Logical.hpp" |
| #include "query_optimizer/physical/Physical.hpp" |
| #include "utility/Macros.hpp" |
| |
| namespace quickstep { |
| namespace optimizer { |
| |
| /** \addtogroup QueryOptimizer |
| * @{ |
| */ |
| |
| /** |
| * @brief Abstract base class for PhysicalGenerator that provides a single |
| * method needed by Strategy objects. This class exists to resolve a |
| * cyclic dependency between PhysicalGenerator and the various |
| * subclasses of Strategy. |
| **/ |
| class LogicalToPhysicalMapper { |
| public: |
| virtual ~LogicalToPhysicalMapper() { |
| } |
| |
| /** |
| * @brief Returns the physical plan for \p logical_plan. |
| * Creates the physical plan if it is not yet created. |
| * |
| * @param logical_plan The input logical plan. |
| * @return The physical plan for the logical plan. |
| */ |
| virtual physical::PhysicalPtr createOrGetPhysicalFromLogical( |
| const logical::LogicalPtr &logical_plan) = 0; |
| |
| protected: |
| LogicalToPhysicalMapper() { |
| } |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(LogicalToPhysicalMapper); |
| }; |
| |
| /** @} */ |
| |
| } // namespace optimizer |
| } // namespace quickstep |
| |
| #endif // QUICKSTEP_QUERY_OPTIMIZER_LOGICAL_TO_PHYSICAL_MAPPER_HPP_ |