RecoCandidate.h

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#ifndef RecoCandidate_RecoCandidate_h
#define RecoCandidate_RecoCandidate_h

#include "DataFormats/Candidate/interface/LeafCandidate.h"
#include "DataFormats/TrackReco/interface/TrackFwd.h"
#include "DataFormats/GsfTrackReco/interface/GsfTrackFwd.h"
#include "DataFormats/EgammaReco/interface/SuperClusterFwd.h"
#include "DataFormats/CaloTowers/interface/CaloTowerCollection.h"
#include "DataFormats/CaloTowers/interface/CaloTowerDefs.h"

namespace reco {

  class RecoCandidate : public LeafCandidate {
  public:
    RecoCandidate() : LeafCandidate() { }
    template<typename P4>
    RecoCandidate( Charge q, const P4 & p4, const Point & vtx = Point( 0, 0, 0 ),
           int pdgId = 0, int status = 0 ) : 
      LeafCandidate( q, p4, vtx, pdgId, status ) { }
    ~RecoCandidate() override;
    bool overlap( const Candidate & ) const override = 0;
    RecoCandidate * clone() const override ;

    virtual reco::TrackRef track() const;
    virtual reco::TrackRef track( size_t ) const;
    virtual size_t numberOfTracks() const;
    virtual reco::GsfTrackRef gsfTrack() const;
    virtual reco::TrackRef standAloneMuon() const;
    virtual reco::TrackRef combinedMuon() const;
    virtual reco::SuperClusterRef superCluster() const;
    virtual CaloTowerRef caloTower() const;
    const Track * bestTrack() const override;
    virtual TrackBaseRef bestTrackRef() const;
    enum TrackType { noTrackType, recoTrackType, gsfTrackType };
    virtual TrackType bestTrackType() const;
    float dzError() const override; 
    float dxyError() const override; 


  protected:
    template<typename R>
    bool checkOverlap( const R & r1, const R & r2 ) const {
      return( ! r1.isNull() && ! r2.isNull() && r1 == r2 );
    }

  private:
    template<typename, typename, typename> friend struct component; 
  };

  struct StandAloneMuonTag { };
  struct CombinedMuonTag { };

  GET_DEFAULT_CANDIDATE_COMPONENT( RecoCandidate, TrackRef, track );
  GET_DEFAULT_CANDIDATE_MULTIPLECOMPONENTS( RecoCandidate, TrackRef, track, numberOfTracks );
  GET_DEFAULT_CANDIDATE_COMPONENT( RecoCandidate, GsfTrackRef, gsfTrack );
  GET_CANDIDATE_COMPONENT( RecoCandidate, TrackRef, standAloneMuon, StandAloneMuonTag );
  GET_CANDIDATE_COMPONENT( RecoCandidate, TrackRef, combinedMuon, CombinedMuonTag );
  GET_DEFAULT_CANDIDATE_COMPONENT( RecoCandidate, SuperClusterRef, superCluster );
  GET_DEFAULT_CANDIDATE_COMPONENT( RecoCandidate, CaloTowerRef, caloTower );
  GET_DEFAULT_CANDIDATE_COMPONENT( RecoCandidate, const Track *, bestTrack );
  GET_DEFAULT_CANDIDATE_COMPONENT( RecoCandidate, RecoCandidate::TrackType, bestTrackType );
  
}

#endif