| /** |
| * Copyright 2011-2015 Quickstep Technologies LLC. |
| * Copyright 2015-2016 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_EXPRESSIONS_EXPRESSION_FACTORIES_HPP_ |
| #define QUICKSTEP_EXPRESSIONS_EXPRESSION_FACTORIES_HPP_ |
| |
| #include "utility/Macros.hpp" |
| |
| namespace quickstep { |
| |
| class CatalogDatabaseLite; |
| class Predicate; |
| class Scalar; |
| |
| namespace serialization { |
| class Predicate; |
| class Scalar; |
| } // namespace serialization |
| |
| /** \addtogroup Expressions |
| * @{ |
| */ |
| |
| /** |
| * @brief All-static factory object that provides access to Predicates. |
| **/ |
| class PredicateFactory { |
| public: |
| /** |
| * @brief Get a pointer to a Predicate from its serialized Protocol Buffer |
| * form. |
| * |
| * @param proto The Protocol Buffer representation of a Predicate object, |
| * originally generated by getProto(). |
| * @param database The Database to resolve relation and attribute references |
| * in. |
| * @return A new Predicate reconstructed from the supplied Protocol Buffer. |
| **/ |
| static Predicate* ReconstructFromProto(const serialization::Predicate &proto, |
| const CatalogDatabaseLite &database); |
| |
| /** |
| * @brief Check whether a serialization::Predicate is fully-formed and |
| * all parts are valid. |
| * |
| * @param proto A serialized Protocol Buffer representation of a Predicate, |
| * originally generated by getProto(). |
| * @param database The Database to resolve relation and attribute references |
| * in. |
| * @return Whether proto is fully-formed and valid. |
| **/ |
| static bool ProtoIsValid(const serialization::Predicate &proto, |
| const CatalogDatabaseLite &database); |
| |
| private: |
| // Undefined default constructor. Class is all-static and should not be |
| // instantiated. |
| PredicateFactory(); |
| |
| DISALLOW_COPY_AND_ASSIGN(PredicateFactory); |
| }; |
| |
| /** |
| * @brief All-static factory object that provides access to Scalars. |
| **/ |
| class ScalarFactory { |
| public: |
| /** |
| * @brief Get a pointer to a Scalar from its serialized Protocol Buffer form. |
| * |
| * @param proto The Protocol Buffer representation of a Scalar object, |
| * originally generated by getProto(). |
| * @param database The Database to resolve relation and attribute references |
| * in. |
| * @return A new Scalar reconstructed from the supplied Protocol Buffer. |
| **/ |
| static Scalar* ReconstructFromProto(const serialization::Scalar &proto, |
| const CatalogDatabaseLite &database); |
| |
| /** |
| * @brief Check whether a serialization::Scalar is fully-formed and |
| * all parts are valid. |
| * |
| * @param proto A serialized Protocol Buffer representation of a Scalar, |
| * originally generated by getProto(). |
| * @param database The Database to resolve relation and attribute references |
| * in. |
| * @return Whether proto is fully-formed and valid. |
| **/ |
| static bool ProtoIsValid(const serialization::Scalar &proto, |
| const CatalogDatabaseLite &database); |
| |
| private: |
| // Undefined default constructor. Class is all-static and should not be |
| // instantiated. |
| ScalarFactory(); |
| |
| DISALLOW_COPY_AND_ASSIGN(ScalarFactory); |
| }; |
| |
| /** @} */ |
| |
| } // namespace quickstep |
| |
| #endif // QUICKSTEP_EXPRESSIONS_EXPRESSION_FACTORIES_HPP_ |