APEvtWeight.h

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/*
  Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
*/


 
#ifndef APEvtWeight_h
#define APEvtWeight_h
 
#include "TNamed.h"
#include <vector>
 
class APWeightEntry;
 
class APEvtWeight : public TNamed {
 
public:
  enum ObjType {kMuon, kTau, kElectron, kJet, kMuonMO, kTauMO, kElectronMO, kJetMO, kDiMuon, kDiTau, kDiElectron, kDiJet, kANDed, kORed, kMOORed, kMOANDed};               
    
  APEvtWeight(ObjType type);                                                     
  virtual ~APEvtWeight();                                                        
  void AddWeightToEvt(APWeightEntry* weight);                                    
 
  double GetWeight();                                                            
  double GetStdDev();                                                            
  double GetVariance();                                                          
  double GetSysUncert();                                                         
  double GetSysVariance();                                                       
  
  std::vector< APWeightEntry* > GetWeightObjects(ObjType type);                  
  unsigned long NEntries();                                                      
  ObjType GetType();                                                             
 
  const friend APEvtWeight operator&&(const APEvtWeight& a_in, const APEvtWeight& b_in); 
  const friend APEvtWeight operator||(const APEvtWeight& a_in, const APEvtWeight& b_in); 
  const friend APEvtWeight operator!(const APEvtWeight& a_in);                   
 
  ClassDef(APEvtWeight,1)
 
protected:
  void Compute();                                                                
  std::vector< std::vector< APWeightEntry* > > m_current_evt_weights;             
  unsigned long int m_n_entries;                                                  
  double m_k_evt_weight;                                                          
  double m_variance;                                                              
  double m_variance_sys;                                                          
  bool m_isComputed;                                                              
  ObjType m_type;                                                                 
};
 
#endif