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File indexing completed on 2021-02-14 13:34:59

0001 // \class JetExtender JetExtender.cc
0002 //
0003 // Combines different Jet associations into single compact object
0004 // which extends basic Jet information
0005 // Fedor Ratnikov Sep. 10, 2007
0006 //
0007 #include "FWCore/MessageLogger/interface/MessageLogger.h"
0008 
0009 #include "FWCore/Framework/interface/ESHandle.h"
0010 #include "FWCore/Framework/interface/Event.h"
0011 #include "DataFormats/JetReco/interface/JetExtendedAssociation.h"
0012 
0013 #include "JetExtender.h"
0014 
0015 JetExtender::JetExtender(const edm::ParameterSet& fConfig)
0016     : mJets(fConfig.getParameter<edm::InputTag>("jets")),
0017       mJet2TracksAtVX(fConfig.getParameter<edm::InputTag>("jet2TracksAtVX")),
0018       mJet2TracksAtCALO(fConfig.getParameter<edm::InputTag>("jet2TracksAtCALO")) {
0019   token_mJets = consumes<edm::View<reco::Jet> >(mJets);
0020   if (!(mJet2TracksAtVX.label().empty()))
0021     token_mJet2TracksAtVX = consumes<reco::JetTracksAssociation::Container>(mJet2TracksAtVX);
0022   if (!(mJet2TracksAtCALO.label().empty()))
0023     token_mJet2TracksAtCALO = consumes<reco::JetTracksAssociation::Container>(mJet2TracksAtCALO);
0024 
0025   produces<reco::JetExtendedAssociation::Container>();
0026 }
0027 
0028 JetExtender::~JetExtender() {}
0029 
0030 void JetExtender::produce(edm::Event& fEvent, const edm::EventSetup& fSetup) {
0031   // get stuff from Event
0032   edm::Handle<edm::View<reco::Jet> > jets_h;
0033   fEvent.getByToken(token_mJets, jets_h);
0034   edm::Handle<reco::JetTracksAssociation::Container> j2tVX_h;
0035   if (!(mJet2TracksAtVX.label().empty()))
0036     fEvent.getByToken(token_mJet2TracksAtVX, j2tVX_h);
0037   edm::Handle<reco::JetTracksAssociation::Container> j2tCALO_h;
0038   if (!(mJet2TracksAtCALO.label().empty()))
0039     fEvent.getByToken(token_mJet2TracksAtCALO, j2tCALO_h);
0040 
0041   auto jetExtender = std::make_unique<reco::JetExtendedAssociation::Container>(reco::JetRefBaseProd(jets_h));
0042 
0043   // loop over jets (make sure jets in associations are the same as in collection
0044 
0045   for (unsigned j = 0; j < jets_h->size(); ++j) {
0046     edm::RefToBase<reco::Jet> jet = jets_h->refAt(j);
0047     reco::JetExtendedAssociation::JetExtendedData extendedData;
0048     if (j2tVX_h.isValid()) {  // fill tracks@VX  summary
0049       try {
0050         extendedData.mTracksAtVertexNumber = reco::JetTracksAssociation::tracksNumber(*j2tVX_h, jet);
0051         extendedData.mTracksAtVertexP4 = reco::JetTracksAssociation::tracksP4(*j2tVX_h, jet);
0052       } catch (cms::Exception const&) {
0053         edm::LogError("MismatchedJets") << "Jets in original collection " << mJets
0054                                         << " mismatch jets in j2t VX association " << mJet2TracksAtVX
0055                                         << ". Wrong collections?";
0056         throw;
0057       }
0058     }
0059     if (j2tCALO_h.isValid()) {  // fill tracks@CALO  summary
0060       try {
0061         extendedData.mTracksAtCaloNumber = reco::JetTracksAssociation::tracksNumber(*j2tCALO_h, jet);
0062         extendedData.mTracksAtCaloP4 = reco::JetTracksAssociation::tracksP4(*j2tCALO_h, jet);
0063       } catch (cms::Exception const&) {
0064         edm::LogError("MismatchedJets") << "Jets in original collection " << mJets
0065                                         << " mismatch jets in j2t CALO association " << mJet2TracksAtCALO
0066                                         << ". Wrong collections?";
0067         throw;
0068       }
0069     }
0070     reco::JetExtendedAssociation::setValue(&*jetExtender, jet, extendedData);
0071   }
0072   fEvent.put(std::move(jetExtender));
0073 }