/data/refman/pasoursint/CMSSW_5_3_6/src/PhysicsTools/PatUtils/plugins/ShiftedPFCandidateProducerForPFMEtMVA.h

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#ifndef PhysicsTools_PatUtils_ShiftedPFCandidateProducerForPFMEtMVA_h
#define PhysicsTools_PatUtils_ShiftedPFCandidateProducerForPFMEtMVA_h

#include "FWCore/Framework/interface/EDProducer.h"
#include "FWCore/Framework/interface/Event.h"
#include "FWCore/Framework/interface/EventSetup.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "FWCore/Utilities/interface/InputTag.h"

#include "DataFormats/Candidate/interface/Candidate.h"

#include <string>
#include <vector>

class ShiftedPFCandidateProducerForPFMEtMVA : public edm::EDProducer  
{
 public:

  explicit ShiftedPFCandidateProducerForPFMEtMVA(const edm::ParameterSet&);
  ~ShiftedPFCandidateProducerForPFMEtMVA();
    
 private:

  void produce(edm::Event&, const edm::EventSetup&);

  std::string moduleLabel_;

  edm::InputTag srcPFCandidates_; 
  edm::InputTag srcUnshiftedObjects_; 
  edm::InputTag srcShiftedObjects_; 

  double dRmatch_PFCandidate_;
  double dRmatch_Object_;

  struct objectEntryType
  {
    objectEntryType(const reco::Candidate::LorentzVector& shiftedObjectP4, 
                    const reco::Candidate::LorentzVector& unshiftedObjectP4, double dRmatch)
      : shiftedObjectP4_(shiftedObjectP4),
        unshiftedObjectP4_(unshiftedObjectP4),
        dRmatch_(dRmatch),
        isValidMatch_(false)
    {
      if ( unshiftedObjectP4.energy() > 0. ) {
        shift_ = (shiftedObjectP4.energy()/unshiftedObjectP4.energy()) - 1.;
        isValidMatch_ = true;
      }
    }
    ~objectEntryType() {}
    reco::Candidate::LorentzVector shiftedObjectP4_;
    reco::Candidate::LorentzVector unshiftedObjectP4_;
    double dRmatch_;
    double shift_;
    bool isValidMatch_;
  };

  std::vector<objectEntryType> objects_;
};

#endif