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// $Id: G4CompositeEMDataSet.hh,v 1.8 2006/06/29 19:33:08 gunter Exp $
// GEANT4 tag $Name: geant4-09-01-patch-02 $
//
// Author: Maria Grazia Pia (Maria.Grazia.Pia@cern.ch)
//
// History:
// -----------
// 31 Jul 2001   MGP        Created
//
// -------------------------------------------------------------------

// Class description:
// Low Energy Electromagnetic Physics
// Composite data set for an electromagnetic physics process
// A strategy pattern is used to encapsulate algorithms for data interpolation
// Further documentation available from http://www.ge.infn.it/geant4/lowE

// -------------------------------------------------------------------

#ifndef   G4COMPOSITEEMDATASET_HH
 #define  G4COMPOSITEEMDATASET_HH 1

 #include "globals.hh"
 #include "G4VEMDataSet.hh"
 #include <vector>

 class G4VDataSetAlgorithm;

 class G4CompositeEMDataSet : public G4VEMDataSet 
 {
  public:
                                                G4CompositeEMDataSet(G4VDataSetAlgorithm* argAlgorithm, G4double argUnitEnergies=MeV, G4double argUnitData=barn, G4int argMinZ=1, G4int argMaxZ=99); 
   virtual                                     ~G4CompositeEMDataSet();
 
   virtual G4double                             FindValue(G4double argEnergy, G4int argComponentId=0) const;
  
   virtual void                                 PrintData(void) const;

   virtual const G4VEMDataSet *                 GetComponent(G4int argComponentId) const { return components[argComponentId]; }
   virtual void                                 AddComponent(G4VEMDataSet * argDataSet) { components.push_back(argDataSet); }
   virtual size_t                               NumberOfComponents(void) const { return components.size(); }

   virtual const G4DataVector &                 GetEnergies(G4int argComponentId) const { return GetComponent(argComponentId)->GetEnergies(0); }
   virtual const G4DataVector &                 GetData(G4int argComponentId) const { return GetComponent(argComponentId)->GetData(0); }
   virtual void                                 SetEnergiesData(G4DataVector * argEnergies, G4DataVector * argData, G4int argComponentId);

   virtual G4bool                               LoadData(const G4String & argFileName);
   virtual G4bool                               SaveData(const G4String & argFileName) const;
   
  private:
   void                                         CleanUpComponents(void);
  
   // Hide copy constructor and assignment operator 
                                                G4CompositeEMDataSet();
                                                G4CompositeEMDataSet(const G4CompositeEMDataSet & copy);
   G4CompositeEMDataSet &                       operator=(const G4CompositeEMDataSet & right);

   std::vector<G4VEMDataSet *>                  components;          // Owned pointers

   G4VDataSetAlgorithm *                        algorithm;           // Owned pointer 
  
   G4double                                     unitEnergies;
   G4double                                     unitData;

   G4int                                        minZ;
   G4int                                        maxZ;
 };
#endif /* G4COMPOSITEEMDATASET_HH */