Factory.h

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#ifndef MarlinTrk_Factory_h
#define MarlinTrk_Factory_h

#include "IMarlinTrkSystem.h"

#include <string>
#include <map>


// fwd declaration for bwd compatibility
namespace gear{
  class GearMgr ;
}


namespace MarlinTrk{
  
  class Factory {
    
  public:
    
    virtual ~Factory() {
      for( auto& trkSystem : _map ) { delete trkSystem.second; }
    }

    Factory(const Factory&) = delete;
    Factory const& operator=(const Factory&) = delete;
    
    static IMarlinTrkSystem* createMarlinTrkSystem(const std::string& systemType,  
                                                   const gear::GearMgr* gearMgr,
                                                   const std::string& options ) ;
    
    
    static IMarlinTrkSystem* getMarlinTrkSystem(const std::string& systemType) ;


    static IMarlinTrkSystem* getCurrentMarlinTrkSystem() ;


    static Factory* instance() ;

  protected:

    typedef std::map< std::string, IMarlinTrkSystem*> TrkSystemMap ;

    Factory() : _currentTrkSystem(0){}

    IMarlinTrkSystem* _currentTrkSystem=nullptr;

    TrkSystemMap _map{};

  } ;
  
} // end of MarlinTrk namespace 

#endif