00001 #ifndef OMG_DDS_SUB_ANY_DATA_READER_HPP_ 00002 #define OMG_DDS_SUB_ANY_DATA_READER_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/sub/subfwd.hpp> 00024 #include <dds/sub/detail/AnyDataReader.hpp> 00025 00026 namespace dds { namespace sub { 00027 class AnyDataReader { 00028 public: 00029 template <typename DR> 00030 AnyDataReader(const DR& dr) { 00031 holder_ = new detail::DRHolder<DR>(dr); 00032 } 00033 00034 inline const detail::DRHolderBase* operator->() const { 00035 return holder_; 00036 } 00037 00038 inline detail::DRHolderBase* operator->() { 00039 return holder_; 00040 } 00041 00042 inline ~AnyDataReader() { 00043 delete holder_; 00044 } 00045 00046 public: 00047 inline AnyDataReader& swap(AnyDataReader& rhs) { 00048 std::swap(holder_, rhs.holder_); 00049 return *this; 00050 } 00051 00052 template <typename TOPIC> 00053 AnyDataReader& operator =(const TOPIC& rhs) { 00054 AnyDataReader(rhs).swap(*this); 00055 return *this; 00056 } 00057 00058 inline AnyDataReader& operator =(AnyDataReader rhs) { 00059 rhs.swap(*this); 00060 return *this; 00061 } 00062 00063 public: 00064 template <typename DR> 00065 const DR& get() { 00066 detail::DRHolder<DR>* h = dynamic_cast<detail::DRHolder<DR>* >(holder_); 00067 if (h == 0) { 00068 throw dds::core::InvalidDowncastError("invalid type"); 00069 } 00070 return h->get(); 00071 } 00072 private: 00073 detail::DRHolderBase* holder_; 00074 }; 00075 00076 }} 00077 00078 #endif /* OMG_DDS_SUB_ANY_DATA_READER_HPP_ */
1.7.1