| /** |
| * 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_LOGICAL_HPP_ |
| #define QUICKSTEP_QUERY_OPTIMIZER_LOGICAL_LOGICAL_HPP_ |
| |
| #include <memory> |
| #include <vector> |
| |
| #include "query_optimizer/OptimizerTree.hpp" |
| #include "query_optimizer/expressions/AttributeReference.hpp" |
| #include "query_optimizer/logical/LogicalType.hpp" |
| #include "utility/Macros.hpp" |
| |
| namespace quickstep { |
| namespace optimizer { |
| namespace logical { |
| |
| /** \addtogroup OptimizerLogical |
| * @{ |
| */ |
| |
| class Logical; |
| typedef std::shared_ptr<const Logical> LogicalPtr; |
| |
| /** |
| * @brief Base class for all logical operator/node. |
| */ |
| class Logical : public OptimizerTree<Logical> { |
| public: |
| /** |
| * @brief Destructor. |
| */ |
| ~Logical() {} |
| |
| /** |
| * @return The type of this logical operator. |
| */ |
| virtual LogicalType getLogicalType() const = 0; |
| |
| /** |
| * @return The references to the output attributes produced by this logical |
| * operator. |
| */ |
| virtual std::vector<expressions::AttributeReferencePtr> getOutputAttributes() const = 0; |
| |
| /** |
| * @return The references to the input attributes used in this logical |
| * operator. |
| */ |
| virtual std::vector<expressions::AttributeReferencePtr> getReferencedAttributes() const = 0; |
| |
| protected: |
| /** |
| * @brief Constructor. |
| */ |
| Logical() {} |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(Logical); |
| }; |
| |
| /** @} */ |
| |
| } // namespace logical |
| } // namespace optimizer |
| } // namespace quickstep |
| |
| #endif /* QUICKSTEP_QUERY_OPTIMIZER_LOGICAL_LOGICAL_HPP_ */ |