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/data/refman/pasoursint/CMSSW_4_1_8_patch13/src/RecoJets/JetAssociationProducers/src/JetTracksAssociatorAtVertex.cc

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00001 // \class JetTracksAssociatorAtVertex JetTracksAssociatorAtVertex.cc 
00002 //
00003 // Original Author:  Andrea Rizzi
00004 //         Created:  Wed Apr 12 11:12:49 CEST 2006
00005 // Accommodated for Jet Package by: Fedor Ratnikov Jul. 30, 2007
00006 // $Id: JetTracksAssociatorAtVertex.cc,v 1.6 2010/03/18 09:17:25 srappocc Exp $
00007 //
00008 #include "FWCore/MessageLogger/interface/MessageLogger.h"
00009 
00010 // user include files
00011 #include "FWCore/Framework/interface/Event.h"
00012 #include "DataFormats/Common/interface/View.h"
00013 #include "DataFormats/JetReco/interface/Jet.h"
00014 #include "DataFormats/TrackReco/interface/Track.h"
00015 #include "DataFormats/JetReco/interface/JetTracksAssociation.h"
00016 
00017 #include "JetTracksAssociatorAtVertex.h"
00018 
00019 JetTracksAssociatorAtVertex::JetTracksAssociatorAtVertex(const edm::ParameterSet& fConfig)
00020   : mJets (fConfig.getParameter<edm::InputTag> ("jets")),
00021     mTracks (fConfig.getParameter<edm::InputTag> ("tracks")),
00022     mAssociator (fConfig.getParameter<double> ("coneSize"))
00023 {
00024   produces<reco::JetTracksAssociation::Container> ();
00025 }
00026 
00027 JetTracksAssociatorAtVertex::~JetTracksAssociatorAtVertex() {}
00028 
00029 void JetTracksAssociatorAtVertex::produce(edm::Event& fEvent, const edm::EventSetup& fSetup) {
00030   edm::Handle <edm::View <reco::Jet> > jets_h;
00031   fEvent.getByLabel (mJets, jets_h);
00032   edm::Handle <reco::TrackCollection> tracks_h;
00033   fEvent.getByLabel (mTracks, tracks_h);
00034   
00035   std::auto_ptr<reco::JetTracksAssociation::Container> jetTracks (new reco::JetTracksAssociation::Container (reco::JetRefBaseProd(jets_h)));
00036 
00037   // format inputs
00038   std::vector <edm::RefToBase<reco::Jet> > allJets;
00039   allJets.reserve (jets_h->size());
00040   for (unsigned i = 0; i < jets_h->size(); ++i) allJets.push_back (jets_h->refAt(i));
00041   std::vector <reco::TrackRef> allTracks;
00042   allTracks.reserve (tracks_h->size());
00043   // run algo
00044   for (unsigned i = 0; i < tracks_h->size(); ++i) {
00045     allTracks.push_back (reco::TrackRef (tracks_h, i));
00046   }
00047   mAssociator.produce (&*jetTracks, allJets, allTracks);
00048 
00049 
00050   // store output
00051   fEvent.put (jetTracks);
00052 }