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CmosRWFactory.cpp

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00001 /* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
00002  * vim:expandtab:autoindent:tabstop=4:shiftwidth=4:filetype=c:cindent:textwidth=0:
00003  *
00004  * Copyright (C) 2005 Dell Inc.
00005  *  by Michael Brown <Michael_E_Brown@dell.com>
00006  * Licensed under the Open Software License version 2.1
00007  *
00008  * Alternatively, you can redistribute it and/or modify
00009  * it under the terms of the GNU General Public License as published
00010  * by the Free Software Foundation; either version 2 of the License,
00011  * or (at your option) any later version.
00012 
00013  * This program is distributed in the hope that it will be useful, but
00014  * WITHOUT ANY WARRANTY; without even the implied warranty of
00015  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
00016  * See the GNU General Public License for more details.
00017  */
00018 
00019 #define LIBSMBIOS_SOURCE
00020 #include "CmosRWImpl.h"
00021 #include "FactoryImpl2.h"
00022 
00023 using namespace std;
00024 
00025 namespace cmos
00026 {
00027     class CmosRWFactoryImpl : public factory::TFactory<CmosRWFactory>
00028     {
00029     public:
00030         CmosRWFactoryImpl() { setParameter("cmosMapFile", ""); };
00031         virtual ~CmosRWFactoryImpl() throw ();
00032         virtual ICmosRW *getSingleton( ); // returns singleton
00033         virtual ICmosRW *makeNew( ); // not for use
00034     protected:
00035         static ICmosRW *_cmosPtr;
00036     };
00037 
00038     //
00039     CmosRWFactory::~CmosRWFactory() throw()
00040     {}
00041     CmosRWFactory::CmosRWFactory()
00042     {}
00043 
00044     ICmosRW           *CmosRWFactoryImpl::_cmosPtr  = 0;
00045 
00046     CmosRWFactoryImpl::~CmosRWFactoryImpl() throw()
00047     {
00048         if( _cmosPtr )
00049         {
00050             delete _cmosPtr;
00051         }
00052         _cmosPtr = 0;
00053     }
00054 
00055     CmosRWFactory *CmosRWFactory::getFactory()
00056     {
00057         // reinterpret_cast<...>(0) to ensure template parameter is correct
00058         // this is a workaround for VC6 which cannot use explicit member template
00059         // funciton initialization.
00060         return CmosRWFactoryImpl::getFactory(reinterpret_cast<CmosRWFactoryImpl *>(0));
00061     }
00062 
00063     ICmosRW *CmosRWFactoryImpl::getSingleton()
00064     {
00065         if (_cmosPtr == 0)
00066             _cmosPtr = makeNew();
00067 
00068         return _cmosPtr;
00069     }
00070 
00071     ICmosRW *CmosRWFactoryImpl::makeNew()
00072     {
00073         ICmosRW *ret=0;
00074         if (mode == UnitTestMode)
00075         {
00076             ret = new CmosRWFile( getParameterString("cmosMapFile") );
00077         }
00078         else if ( mode == AutoDetectMode )
00079         {
00080             ret = new CmosRWIo( );
00081         }
00082         else
00083         {
00084             throw InvalidCmosRWModeImpl("CmosRW Factory has been set to an invalid mode.");
00085         }
00086         return ret;
00087     }
00088 
00089 }

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