00001 /******************************************************************************* 00002 * Copyright (C) 2001-2004 Vintela, Inc. All rights reserved. 00003 * 00004 * Redistribution and use in source and binary forms, with or without 00005 * modification, are permitted provided that the following conditions are met: 00006 * 00007 * - Redistributions of source code must retain the above copyright notice, 00008 * this list of conditions and the following disclaimer. 00009 * 00010 * - Redistributions in binary form must reproduce the above copyright notice, 00011 * this list of conditions and the following disclaimer in the documentation 00012 * and/or other materials provided with the distribution. 00013 * 00014 * - Neither the name of Vintela, Inc. nor the names of its 00015 * contributors may be used to endorse or promote products derived from this 00016 * software without specific prior written permission. 00017 * 00018 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' 00019 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00020 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00021 * ARE DISCLAIMED. IN NO EVENT SHALL Vintela, Inc. OR THE CONTRIBUTORS 00022 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 00023 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 00024 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 00025 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 00026 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 00027 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 00028 * POSSIBILITY OF SUCH DAMAGE. 00029 *******************************************************************************/ 00030 00036 #ifndef OWBI1_RESULTHANDLERIFC_HPP_INCLUDE_GUARD_ 00037 #define OWBI1_RESULTHANDLERIFC_HPP_INCLUDE_GUARD_ 00038 #include "OWBI1_config.h" 00039 #include "OWBI1_CommonFwd.hpp" // for the *ResultHandler typedefs 00040 00041 namespace OWBI1 00042 { 00043 00044 /* 00045 * An abstract callback object to handle results from some form of operation. 00046 */ 00047 template <typename T> 00048 class ResultHandlerIFC 00049 { 00050 public: 00051 /* 00052 * Handle a result. 00053 * An exception may be thrown by a derived class. 00054 * 00055 * @param x A value that needs to be handled. 00056 */ 00057 void handle(const T& x) 00058 { 00059 doHandle(x); 00060 } 00061 virtual ~ResultHandlerIFC(); 00062 protected: 00063 virtual void doHandle(const T& x) = 0; 00064 }; 00065 template <typename T> 00066 ResultHandlerIFC<T>::~ResultHandlerIFC() 00067 { 00068 } 00069 00070 } // end namespace OWBI1 00071 00072 #endif