- asbstract factory interface

DDG4/include/DDG4/G4SDFactory.h

+// $Id: $
+//====================================================================
+//  AIDA Detector description implementation
+//--------------------------------------------------------------------
+//
+//  Author     : F.Gaede, DESY
+//
+//====================================================================
+#ifndef DD4HEP_G4SDFactory_H
+#define DD4HEP_G4SDFactory_H
+
+
+#include <string>
+
+namespace DD4hep { namespace Geometry { class LCDD ; } }
+class G4VSensitiveDetector ;
+
+/*  DD4hep namespace declaration */
+namespace DD4hep { namespace Simulation {
+    
+    
+    /** @class G4SDFactory G4SDFactory.h DDG4/G4SDFactory.h
+     *  Abstract factory base class for createion of G4VSensitiveDetectors
+     * 
+     * @author  F.Gaede, DESY
+     * @version $Id:$
+     */
+    class G4SDFactory {
+
+    public:      
+      
+      /** Implement this to create a new SD with name, initialized with the information in lcdd */
+      virtual G4VSensitiveDetector*  createSD( const std::string& name,  DD4hep::Geometry::LCDD& lcdd )=0 ;
+      
+    } ;	
+    
+
+    /** Simpleimplementation of factory for SDs that have a c'tor of the form 
+     *  T( const std::string& name,  DD4hep::Geometry::LCDD& lcdd )
+     */
+    template <class  T>
+    class SimpleG4SDFactory : public G4SDFactory {
+
+      virtual G4VSensitiveDetector*  createSD( const std::string& name,  DD4hep::Geometry::LCDD& lcdd ){
+	return new T( name,  lcdd ) ;
+      }
+    } ;
+
+
+  }    // End namespace Simulation
+}      // End namespace DD4hep
+
+#endif // DD4HEP_GEANT4SENSITIVEDETECTOR_H