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#ifndef Candidate_ShallowCloneCandidate_h
#define Candidate_ShallowCloneCandidate_h
/** \class reco::ShallowCloneCandidate
*
* shallow clone of a particle candidate keepint a reference
* to the master clone
*
* \author Luca Lista, INFN
*
*
*/
#include "DataFormats/Candidate/interface/LeafCandidate.h"
namespace reco {
class ShallowCloneCandidate : public LeafCandidate {
public:
/// collection of daughter candidates
typedef CandidateCollection daughters;
/// default constructor
ShallowCloneCandidate() : LeafCandidate() {}
/// constructor from Particle
explicit ShallowCloneCandidate(const CandidateBaseRef& masterClone)
: LeafCandidate(*masterClone),
masterClone_(masterClone->hasMasterClone() ? masterClone->masterClone() : masterClone) {}
/// constructor from values
ShallowCloneCandidate(const CandidateBaseRef& masterClone,
Charge q,
const LorentzVector& p4,
const Point& vtx = Point(0, 0, 0))
: LeafCandidate(q, p4, vtx), masterClone_(masterClone) {}
/// constructor from values
ShallowCloneCandidate(const CandidateBaseRef& masterClone,
Charge q,
const PolarLorentzVector& p4,
const Point& vtx = Point(0, 0, 0))
: LeafCandidate(q, p4, vtx), masterClone_(masterClone) {}
/// destructor
~ShallowCloneCandidate() override;
/// returns a clone of the Candidate object
ShallowCloneCandidate* clone() const override;
/// number of daughters
size_t numberOfDaughters() const override;
/// number of daughters
size_t numberOfMothers() const override;
/// return daughter at a given position (throws an exception)
const Candidate* daughter(size_type i) const override;
/// return daughter at a given position (throws an exception)
const Candidate* mother(size_type i) const override;
/// return daughter at a given position (throws an exception)
Candidate* daughter(size_type i) override;
using reco::LeafCandidate::daughter; // avoid hiding the base
/// has master clone
bool hasMasterClone() const override;
/// returns reference to master clone
const CandidateBaseRef& masterClone() const override;
bool isElectron() const override;
bool isMuon() const override;
bool isGlobalMuon() const override;
bool isStandAloneMuon() const override;
bool isTrackerMuon() const override;
bool isCaloMuon() const override;
bool isPhoton() const override;
bool isConvertedPhoton() const override;
bool isJet() const override;
private:
/// check overlap with another Candidate
bool overlap(const Candidate& c) const override { return masterClone_->overlap(c); }
/// CandidateBaseReference to master clone
CandidateBaseRef masterClone_;
};
} // namespace reco
#endif
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