/data/refman/pasoursint/CMSSW_5_3_1/src/SimG4Core/Notification/interface/ComponentFactoryByName.h

Go to the documentation of this file.

#ifndef SimG4Core_ComponentFactoryByName_H 
#define SimG4Core_ComponentFactoryByName_H 

#include "SimG4Core/Notification/interface/SimG4Exception.h"

#include <string>
#include <map>

template <class B>
class ComponentFactoryByName
{
public:
    static B * getBuilder(const std::string & name)
    {
        if (myMap().size() == 0)
            throw SimG4Exception("No Builder registered to the Factory.");
        if (myMap().find(name) == myMap().end())
            throw SimG4Exception("The Component "+name+" is not registered to the Factory.");
        return (myMap()[name]);
    }
    static void setBuilder(B * in , const std::string & name)
    {
        if (name.empty())
            throw SimG4Exception("The registration of Components without name is not allowed.");
        myMap()[name] = in;
    }
    typedef std::map<std::string,B *> BuilderMapType;
protected:
    static BuilderMapType & myMap()
    {
        static BuilderMapType me_;
        return me_;
    }
};

#endif