00001 #ifndef OMG_DDS_TOPIC_ANY_TOPIC_DESCRIPTION_HPP_ 00002 #define OMG_DDS_TOPIC_ANY_TOPIC_DESCRIPTION_HPP_ 00003 00004 /* Copyright 2010, Object Management Group, Inc. 00005 * Copyright 2010, PrismTech, Corp. 00006 * Copyright 2010, Real-Time Innovations, Inc. 00007 * All rights reserved. 00008 * 00009 * Licensed under the Apache License, Version 2.0 (the "License"); 00010 * you may not use this file except in compliance with the License. 00011 * You may obtain a copy of the License at 00012 * 00013 * http://www.apache.org/licenses/LICENSE-2.0 00014 * 00015 * Unless required by applicable law or agreed to in writing, software 00016 * distributed under the License is distributed on an "AS IS" BASIS, 00017 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00018 * See the License for the specific language governing permissions and 00019 * limitations under the License. 00020 */ 00021 00022 #include <dds/core/Exception.hpp> 00023 #include <dds/topic/topicfwd.hpp> 00024 #include <dds/topic/detail/AnyTopicDescription.hpp> 00025 00026 00027 namespace dds { namespace topic { 00028 00029 class AnyTopicDescription { 00030 public: 00031 template <typename T> 00032 inline AnyTopicDescription(const T& t) 00033 : holder_(new detail::TDHolder<T>(t)) { } 00034 00035 const detail::TDHolderBase* operator->() const { 00036 return holder_; 00037 } 00038 00039 detail::TDHolderBase* operator->() { 00040 return holder_; 00041 } 00042 00043 inline ~AnyTopicDescription() { 00044 delete holder_; 00045 } 00046 00047 protected: 00048 inline AnyTopicDescription(detail::TDHolderBase* holder) 00049 : holder_(holder) { } 00050 00051 public: 00052 inline AnyTopicDescription& swap(AnyTopicDescription& rhs) { 00053 std::swap(holder_, rhs.holder_); 00054 return *this; 00055 } 00056 00057 template <typename TOPIC> 00058 AnyTopicDescription& operator =(const TOPIC& rhs) { 00059 AnyTopicDescription(rhs).swap(*this); 00060 return *this; 00061 } 00062 00063 inline AnyTopicDescription& operator =(AnyTopicDescription rhs) { 00064 rhs.swap(*this); 00065 return *this; 00066 } 00067 00068 public: 00069 template <typename T> 00070 const T& get() { 00071 detail::TDHolder<T>* h = dynamic_cast<detail::TDHolder<T>* >(holder_); 00072 if (h == 0) { 00073 throw dds::core::InvalidDowncastError("invalid type"); 00074 } 00075 return h->get(); 00076 } 00077 00078 protected: 00079 detail::TDHolderBase* holder_; 00080 }; 00081 00082 }} 00083 00084 #endif /* OMG_DDS_TOPIC_ANY_TOPIC_DESCRIPTION_HPP_ */
1.7.1