OPeNDAP Hyrax Back End Server (BES) Updated for version 3.8.3
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00001 // BESPluginFactory.h 00002 00003 // This file is part of bes, A C++ back-end server implementation framework 00004 // for the OPeNDAP Data Access Protocol. 00005 00006 // Copyright (c) 2004-2009 University Corporation for Atmospheric Research 00007 // Author: Patrick West <pwest@ucar.edu> and Jose Garcia <jgarcia@ucar.edu> 00008 // and James Gallagher <jgallagher@gso.uri.edu> 00009 // 00010 // This library is free software; you can redistribute it and/or 00011 // modify it under the terms of the GNU Lesser General Public 00012 // License as published by the Free Software Foundation; either 00013 // version 2.1 of the License, or (at your option) any later version. 00014 // 00015 // This library is distributed in the hope that it will be useful, 00016 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00017 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00018 // Lesser General Public License for more details. 00019 // 00020 // You should have received a copy of the GNU Lesser General Public 00021 // License along with this library; if not, write to the Free Software 00022 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 00023 // 00024 // You can contact University Corporation for Atmospheric Research at 00025 // 3080 Center Green Drive, Boulder, CO 80301 00026 00027 // (c) COPYRIGHT University Corporation for Atmospheric Research 2004-2005 00028 // Please read the full copyright statement in the file COPYRIGHT_UCAR. 00029 // 00030 // Authors: 00031 // pwest Patrick West <pwest@ucar.edu> 00032 // jgarcia Jose Garcia <jgarcia@ucar.edu> 00033 // jimg James Gallagher <jgallagher@gso.uri.edu> 00034 00035 #ifndef plugin_factory_h 00036 #define plugin_factory_h 00037 00038 #include <string> 00039 #include <map> 00040 #include <algorithm> 00041 00042 #include "BESPlugin.h" 00043 00044 using std::string; 00045 using std::map; 00046 using std::pair; 00047 using std::unary_function; 00048 00049 #include "BESObj.h" 00050 00060 template<typename C> 00061 class BESPluginFactory : public BESObj 00062 { 00063 private: 00064 map<string, BESPlugin<C> *> d_children; 00065 00072 BESPluginFactory(const BESPluginFactory &pf) 00073 throw(BESInternalError) 00074 { 00075 throw BESInternalError( "Unimplemented method."); 00076 } 00077 00081 const BESPluginFactory &operator=(const BESPluginFactory &rhs) 00082 throw (BESInternalError) 00083 { 00084 throw BESInternalError( "Unimplemented method."); 00085 } 00086 00087 struct DeletePlugins 00088 : public unary_function<pair<string, BESPlugin<C> *>, void> 00089 { 00090 00091 void operator()(pair<string, BESPlugin<C> *> elem) { 00092 delete elem.second; 00093 } 00094 }; 00095 00096 public: 00106 BESPluginFactory(const string &name, const string &library_name) 00107 { 00108 add_mapping(name, library_name); 00109 } 00110 00113 BESPluginFactory() { } 00114 00115 virtual ~BESPluginFactory() 00116 { 00117 for_each(d_children.begin(), d_children.end(), DeletePlugins()); 00118 } 00119 00125 void add_mapping(const string &name, const string &library_name) 00126 { 00127 BESPlugin<C> *child_class = new BESPlugin<C>(library_name); 00128 d_children.insert(std::make_pair(name, child_class)); 00129 } 00130 00146 C *get(const string &name) throw(NoSuchObject, NoSuchLibrary) 00147 { 00148 BESPlugin<C> *child_implementation = d_children[name]; 00149 if (!child_implementation) 00150 throw NoSuchObject(string("No class is bound to ") + name, __FILE__, __LINE__ ); 00151 return child_implementation->instantiate(); 00152 } 00153 00154 virtual void dump( ostream &strm ) const 00155 { 00156 strm << "BESPluginFactory::dump - (" << (void *)this << ")" << endl ; 00157 /* 00158 typedef map<string, BESPlugin<C> *>::const_iterator Plugin_citer ; 00159 BESPluginFactory::Plugin_citer i = d_children.begin() ; 00160 BESPluginFactory::Plugin_citer ie = d_children.end() ; 00161 for( ; i != ie; i++ ) 00162 { 00163 strm << i.second ; 00164 } 00165 */ 00166 } 00167 }; 00168 00169 #endif //plugin_h 00170