| # Gaudi Framework, version v20r3
Generated: 24 Nov 2008

# AlgFactory.h

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    00001 // $Header: /local/reps/Gaudi/GaudiKernel/GaudiKernel/AlgFactory.h,v 1.10 2008/10/09 21:00:37 marcocle Exp $
    00002 #ifndef GAUDIKERNEL_ALGFACTORY_H
    00003 #define GAUDIKERNEL_ALGFACTORY_H
    00004
    00005 #include "Reflex/PluginService.h"
    00006
    00007 // The following is needed to be backward compatible with the old factories of Gaudi. Otherwise the components
    00008 // having the constructor/destructor protected will not be working
    00009
    00010 class IAlgorithm;
    00011 class ISvcLocator;
    00012
    00013 template <typename T> class AlgFactory {
    00014         public: static IAlgorithm* create(const std::string& name, ISvcLocator *svcloc) {
    00015     return new T(name, svcloc );
    00016   }
    00017 };
    00018
    00019 namespace {
    00020   template < typename P > class Factory<P, IAlgorithm*(std::string, ISvcLocator*)> {
    00021     public: static void* Func( void*, const std::vector<void*>& arg, void*) {
    00022       return AlgFactory<P>::create(*(std::string*)(arg[0]), (ISvcLocator*)(arg[1]));
    00023     }
    00024   };
    00025 }
    00026 //---Specialization needed to overcome a problem with Reflex.....
    00027 #ifndef TYPEDISTILLER_STRING_SPECIALIZATION
    00028 #define TYPEDISTILLER_STRING_SPECIALIZATION
    00029 namespace ROOT {
    00030    namespace Reflex {
    00031       template<> class TypeDistiller<std::string> {
    00032       public:
    00033          static Type Get() {
    00034             return TypeBuilder("std::basic_string<char>");
    00035          }
    00036       };
    00037    }
    00038 }
    00039 #endif
    00040
    00041 // Macros to declare component factories
    00042 #define DECLARE_ALGORITHM_FACTORY(x)          PLUGINSVC_FACTORY(x,IAlgorithm*(std::string, ISvcLocator*))
    00043 #define DECLARE_NAMED_ALGORITHM_FACTORY(x,n)  PLUGINSVC_FACTORY_WITH_ID(x,std::string(#n), IAlgorithm*(std::string, ISvcLocator*))
    00044
    00045 #define DECLARE_NAMESPACE_ALGORITHM_FACTORY(n,x)  using n::x; PLUGINSVC_FACTORY(x,IAlgorithm*(std::string, ISvcLocator*))
    00046 #define DECLARE_ALGORITHM(x)  /*dummy*/
    00047 #define DECLARE_NAMESPACE_ALGORITHM(n,x) /*dummy*/
    00048
    00049 #endif // GAUDIKERNEL_ALGFACTORY_H