/afs/cern.ch/work/a/aaltunda/public/www/CMSSW_5_3_13_patch3/src/PhysicsTools/JetCharge/src/JetCharge.cc

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#include "PhysicsTools/JetCharge/interface/JetCharge.h"

double JetCharge::charge(const LorentzVector &lv, const reco::CandidateCollection &vec) const {
    return chargeFromVal<reco::Candidate,reco::CandidateCollection>(lv, vec);
}

double JetCharge::charge(const LorentzVector &lv, const reco::TrackCollection &vec) const {
    return chargeFromVal<reco::Track,reco::TrackCollection>(lv, vec);
}

double JetCharge::charge(const LorentzVector &lv, const reco::TrackRefVector &vec) const {
    return chargeFromRef<reco::TrackRef,reco::TrackRefVector>(lv, vec);
}

double JetCharge::charge(const reco::Candidate &parent) const {
    return chargeFromValIterator<reco::Candidate,reco::Candidate::const_iterator>(parent.p4(),parent.begin(),parent.end()); 
}

JetCharge::JetCharge(const edm::ParameterSet &iCfg) :
var_(Pt),
exp_(iCfg.getParameter<double>("exp")) {
        std::string var = iCfg.getParameter<std::string>("var");
        if (var == "Pt") {
                var_ = Pt;
        } else if (var == "RelPt") {
                var_ = RelPt;
        } else if (var == "RelEta") {
                var_ = RelEta;
        } else if (var == "DeltaR") {
                var_ = DeltaR;
        } else if (var == "Unit") {
                var_ = Unit;
        } else  {
                throw cms::Exception("Configuration error") << "Unknown variable " 
                        << var.c_str() << " for computing jet charge";
        }
}