HistoryKeeper.h

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#ifndef HISTORYKEEPER_H
#define HISTORYKEEPER_H

#include "G4DataHelpers/IHistoryKeeper.h"
#include "GaudiKernel/Service.h"
#include "Event/SimParticleHistory.h"
#include "Event/SimUnobservableStatisticsHeader.h"

class HistoryKeeper : public Service, public virtual IHistoryKeeper
{
  public:
  HistoryKeeper( const std::string& name, ISvcLocator* svcloc)
    : Service( name, svcloc )
    , mCurrentHistory(0)
    , mCurrentUnobservable(0)
    {};
    
  virtual ~HistoryKeeper() {};

  virtual StatusCode initialize() { mCurrentHistory = 0; return StatusCode::SUCCESS; };  
  virtual StatusCode finalize() { if(mCurrentHistory) delete mCurrentHistory; mCurrentHistory = 0; return StatusCode::SUCCESS;};

  virtual StatusCode queryInterface ( const InterfaceID& riid, void** ppvInterface );
  
  virtual const InterfaceID& type() const
    { return IHistoryKeeper::interfaceID(); };
  
  virtual StatusCode GetCurrentHistory(DayaBay::SimParticleHistory* &outHistory)
    {
       if(mCurrentHistory==0) 
         mCurrentHistory = new DayaBay::SimParticleHistory();
       outHistory = mCurrentHistory;
       return StatusCode::SUCCESS;
    }
  
  virtual StatusCode ClaimCurrentHistory(DayaBay::SimParticleHistory* &outHistory) 
    {
      outHistory = mCurrentHistory;
      mCurrentHistory = 0;
      return StatusCode::SUCCESS;
    }

  virtual StatusCode GetCurrentUnobservable(DayaBay::SimUnobservableStatisticsHeader* &outUnobservable)
    {
       if(mCurrentUnobservable==0) 
         mCurrentUnobservable = new DayaBay::SimUnobservableStatisticsHeader();
       outUnobservable = mCurrentUnobservable;
       return StatusCode::SUCCESS;
    }
  
  virtual StatusCode ClaimCurrentUnobservable(DayaBay::SimUnobservableStatisticsHeader* &outUnobservable) 
    {
      outUnobservable = mCurrentUnobservable;
      mCurrentUnobservable = 0;
      return StatusCode::SUCCESS;
    }

  private: 
  DayaBay::SimParticleHistory* mCurrentHistory;
  DayaBay::SimUnobservableStatisticsHeader* mCurrentUnobservable;

};




#endif /* HISTORYKEEPER_H */