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itkFEMObjectFactory.h

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00001 /*========================================================================= 00002 00003 Program: Insight Segmentation & Registration Toolkit 00004 Module: $RCSfile: itkFEMObjectFactory.h,v $ 00005 Language: C++ 00006 Date: $Date: 2003/09/10 14:29:43 $ 00007 Version: $Revision: 1.12 $ 00008 00009 Copyright (c) Insight Software Consortium. All rights reserved. 00010 See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details. 00011 00012 This software is distributed WITHOUT ANY WARRANTY; without even 00013 the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 00014 PURPOSE. See the above copyright notices for more information. 00015 00016 =========================================================================*/ 00017 #ifndef __itkFEMFEMObjectFactory_h 00018 #define __itkFEMFEMObjectFactory_h 00019 00020 #include "itkFastMutexLock.h" 00021 #include <string> 00022 #include <vector> 00023 00024 namespace itk { 00025 namespace fem { 00026 00027 00028 00029 00066 template<class T> 00067 class FEMObjectFactory 00068 { 00069 00073 typedef typename T::Pointer (*COF)(); 00074 00078 typedef std::string StrClassName; 00079 00083 typedef std::vector<std::pair<COF,StrClassName> > COF_Array; 00084 00085 public: 00086 00090 static typename T::Pointer Create(int id) { 00091 return (Instance().cofs_[id].first)(); 00092 } 00093 00100 static int Register(COF f, const char *str) 00101 { 00102 int clid=-1; 00103 Instance().m_MutexLock.Lock(); 00104 Instance().cofs_.push_back( COF_Array::value_type(f,str) ); 00105 clid = static_cast<int>( Instance().cofs_.size()-1 ); 00106 Instance().m_MutexLock.Unlock(); 00107 return clid; 00108 } 00109 00113 static StrClassName ID2ClassName(int id) 00114 { 00115 return Instance().cofs_[id].second; 00116 } 00117 00124 static int ClassName2ID(StrClassName str) 00125 { 00126 int j=0; 00127 for(typename COF_Array::const_iterator i=Instance().cofs_.begin(); i!=Instance().cofs_.end(); i++) { 00128 if (i->second==str) return j; 00129 j++; 00130 } 00131 return -1; 00132 } 00133 00134 private: 00135 00139 COF_Array cofs_; 00140 00145 mutable SimpleFastMutexLock m_MutexLock; 00146 00151 FEMObjectFactory(); 00152 00156 FEMObjectFactory(const FEMObjectFactory&); 00157 00161 ~FEMObjectFactory(); 00162 00166 inline static FEMObjectFactory& Instance(); 00167 00172 static void CleanUP(); 00173 00177 static FEMObjectFactory* obj; 00178 00179 private: 00185 class Dummy {}; 00186 00191 friend class Dummy; 00192 00193 }; 00194 00195 00196 template<class T> 00197 FEMObjectFactory<T>* FEMObjectFactory<T>::obj = 0; 00198 00199 template<class T> 00200 FEMObjectFactory<T>::FEMObjectFactory() {} 00201 00202 template<class T> 00203 FEMObjectFactory<T>::FEMObjectFactory(const FEMObjectFactory<T>&) {} 00204 00205 template<class T> 00206 FEMObjectFactory<T>::~FEMObjectFactory() {} 00207 00208 template<class T> 00209 FEMObjectFactory<T>& FEMObjectFactory<T>::Instance() 00210 { 00211 if (!obj) 00212 { 00216 obj=new FEMObjectFactory; 00217 00222 atexit(&CleanUP); 00223 00224 } 00225 00229 return *obj; 00230 } 00231 00232 template<class T> 00233 void FEMObjectFactory<T>::CleanUP() { delete obj; } 00234 00235 00236 00237 00238 }} // end namespace itk::fem 00239 00240 #endif // #ifndef __itkFEMFEMObjectFactory_h

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