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LOW_deviceFactory.cpp

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00001 /***************************************************************************
00002                           LOW_deviceFactory.cpp  -  description
00003                              -------------------
00004     begin                : Mon Aug 5 2002
00005     copyright            : (C) 2002 by Harald Roelle, Helmut Reiser
00006     email                : roelle@informatik.uni-muenchen.de, reiser@informatik.uni-muenchen.de
00007  ***************************************************************************/
00008 
00009 /***************************************************************************
00010  *                                                                         *
00011  *   This program is free software; you can redistribute it and/or modify  *
00012  *   it under the terms of the GNU General Public License as published by  *
00013  *   the Free Software Foundation; either version 2 of the License, or     *
00014  *   (at your option) any later version.                                   *
00015  *                                                                         *
00016  ***************************************************************************/
00017 
00018 
00019 #include "LOW_deviceFactory.h"
00020 
00021 
00022 
00023 //=====================================================================================
00024 //
00025 // static methods
00026 //
00027 
00028 LOW_device* LOW_deviceFactory::new_SpecificDevice( LOW_netSegment &inSegment, const LOW_deviceID &inDevID)
00029 {
00030   ctorFktMap_t::iterator foundCnstr = deviceCtorsSingleton->find( inDevID.getFamilyCode());
00031   
00032   if ( foundCnstr == deviceCtorsSingleton->end() )
00033     throw deviceFactory_error( "Family type unknown. Family code: "+inDevID.getFamilyCode(), __FILE__, __LINE__);
00034   
00035   return foundCnstr->second( inSegment, inDevID);
00036 }
00037 
00038 
00039 void LOW_deviceFactory::registerSpecificCtor( LOW_deviceIDRaw::devFamCode_t inFamCode, newInstanceFkt_t inPseudoCnstr)
00040 {
00041   // singleton design pattern
00042   if ( deviceCtorsSingleton == 0 )
00043     deviceCtorsSingleton = new ctorFktMap_t();
00044 
00045   if ( inFamCode == LOW_device::anyDev_famCode )
00046     throw deviceFactory_error( "Cannot register for anyDev_famCode.", __FILE__, __LINE__);  
00047 
00048   if ( (*deviceCtorsSingleton)[inFamCode] != 0 )
00049     throw deviceFactory_error( "Familiy type already registered. Family code: "+
00050                                inFamCode, __FILE__, __LINE__);
00051                     
00052   (*deviceCtorsSingleton)[inFamCode] = inPseudoCnstr;
00053 }
00054 
00055 
00056 
00057 //=====================================================================================
00058 //
00059 // static attributes
00060 //
00061 
00062 // Do not really initialize here! Must use singleton pattern!
00063 LOW_deviceFactory::ctorFktMap_t*  LOW_deviceFactory::deviceCtorsSingleton = 0;
00064 

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