/afs/cern.ch/work/a/aaltunda/public/www/CMSSW_6_2_5/src/RecoJets/JetAssociationAlgorithms/src/JetTracksAssociationExplicit.cc

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// Associate jets with tracks by simple "dR" criteria
// Fedor Ratnikov (UMd), Aug. 28, 2007
// $Id: JetTracksAssociationExplicit.cc,v 1.1 2012/01/13 21:11:03 srappocc Exp $

#include "RecoJets/JetAssociationAlgorithms/interface/JetTracksAssociationExplicit.h"

#include "DataFormats/JetReco/interface/PFJet.h"
#include "DataFormats/TrackReco/interface/Track.h"

JetTracksAssociationExplicit::JetTracksAssociationExplicit () 
{}

void JetTracksAssociationExplicit::produce (reco::JetTracksAssociation::Container* fAssociation, 
                                            const std::vector <edm::RefToBase<reco::Jet> >& fJets,
                                            const std::vector <reco::TrackRef>& fTracks) const 
{
  for (unsigned j = 0; j < fJets.size(); ++j) { 
    reco::PFJet const * pfJet = dynamic_cast<reco::PFJet const *>( &* (fJets[j]) ) ;
    if ( pfJet != 0 ) {
      reco::TrackRefVector assoTracks = pfJet->getTrackRefs();
      reco::JetTracksAssociation::setValue (fAssociation, fJets[j], assoTracks);
    } else {
      throw cms::Exception("InvalidConfiguration") 
        << "From JetTracksAssociationExplicit::produce: Only PFJets are currently supported for this module" << std::endl;
    }
  }
}