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//
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// $Id: PATPFParticleProducer.cc,v 1.1 2009/10/20 17:15:14 dgele Exp $
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//
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#include "PhysicsTools/PatAlgos/plugins/PATPFParticleProducer.h"
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#include "FWCore/MessageLogger/interface/MessageLogger.h"
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#include "FWCore/ParameterSet/interface/FileInPath.h"
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#include "DataFormats/ParticleFlowCandidate/interface/PFCandidate.h"
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#include "DataFormats/ParticleFlowCandidate/interface/PFCandidateFwd.h"
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#include "DataFormats/HepMCCandidate/interface/GenParticleFwd.h"
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#include "DataFormats/HepMCCandidate/interface/GenParticle.h"
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#include "DataFormats/Common/interface/Association.h"
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#include "TMath.h"
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#include <vector>
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#include <memory>
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using namespace pat;
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PATPFParticleProducer::PATPFParticleProducer(const edm::ParameterSet & iConfig) {
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// general configurables
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pfCandidateSrc_ = iConfig.getParameter<edm::InputTag>( "pfCandidateSource" );
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// MC matching configurables
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addGenMatch_ = iConfig.getParameter<bool> ( "addGenMatch" );
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if (addGenMatch_) {
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embedGenMatch_ = iConfig.getParameter<bool> ( "embedGenMatch" );
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if (iConfig.existsAs<edm::InputTag>("genParticleMatch")) {
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genMatchSrc_.push_back(iConfig.getParameter<edm::InputTag>( "genParticleMatch" ));
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} else {
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genMatchSrc_ = iConfig.getParameter<std::vector<edm::InputTag> >( "genParticleMatch" );
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}
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}
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// Efficiency configurables
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addEfficiencies_ = iConfig.getParameter<bool>("addEfficiencies");
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if (addEfficiencies_) {
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efficiencyLoader_ = pat::helper::EfficiencyLoader(iConfig.getParameter<edm::ParameterSet>("efficiencies"));
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}
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// Resolution configurables
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addResolutions_ = iConfig.getParameter<bool>("addResolutions");
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if (addResolutions_) {
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resolutionLoader_ = pat::helper::KinResolutionsLoader(iConfig.getParameter<edm::ParameterSet>("resolutions"));
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}
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// produces vector of muons
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produces<std::vector<PFParticle> >();
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}
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PATPFParticleProducer::~PATPFParticleProducer() {
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}
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void PATPFParticleProducer::produce(edm::Event & iEvent,
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const edm::EventSetup & iSetup) {
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// Get the collection of PFCandidates from the event
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edm::Handle<edm::View<PFParticleType> > pfCandidates;
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fetchCandidateCollection(pfCandidates,
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pfCandidateSrc_,
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iEvent );
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// prepare the MC matching
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std::vector<edm::Handle<edm::Association<reco::GenParticleCollection> > > genMatches(genMatchSrc_.size());
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if (addGenMatch_) {
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for (size_t j = 0, nd = genMatchSrc_.size(); j < nd; ++j) {
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iEvent.getByLabel(genMatchSrc_[j], genMatches[j]);
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}
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}
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if (efficiencyLoader_.enabled()) efficiencyLoader_.newEvent(iEvent);
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if (resolutionLoader_.enabled()) resolutionLoader_.newEvent(iEvent, iSetup);
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// loop over PFCandidates
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std::vector<PFParticle> * patPFParticles = new std::vector<PFParticle>();
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for (edm::View<PFParticleType>::const_iterator
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itPFParticle = pfCandidates->begin();
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itPFParticle != pfCandidates->end();
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++itPFParticle) {
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// construct the PFParticle from the ref -> save ref to original object
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unsigned int idx = itPFParticle - pfCandidates->begin();
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edm::RefToBase<PFParticleType> pfCandidatesRef = pfCandidates->refAt(idx);
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PFParticle aPFParticle(pfCandidatesRef);
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if (addGenMatch_) {
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for(size_t i = 0, n = genMatches.size(); i < n; ++i) {
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reco::GenParticleRef genPFParticle = (*genMatches[i])[pfCandidatesRef];
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aPFParticle.addGenParticleRef(genPFParticle);
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}
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if (embedGenMatch_) aPFParticle.embedGenParticle();
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}
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if (efficiencyLoader_.enabled()) {
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efficiencyLoader_.setEfficiencies( aPFParticle, pfCandidatesRef );
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}
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if (resolutionLoader_.enabled()) {
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resolutionLoader_.setResolutions(aPFParticle);
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}
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// add sel to selected
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patPFParticles->push_back(aPFParticle);
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}
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// sort pfCandidates in pt
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std::sort(patPFParticles->begin(), patPFParticles->end(), pTComparator_);
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// put genEvt object in Event
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std::auto_ptr<std::vector<PFParticle> > ptr(patPFParticles);
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iEvent.put(ptr);
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}
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void
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PATPFParticleProducer::fetchCandidateCollection( edm::Handle< edm::View<PFParticleType> >& c,
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const edm::InputTag& tag,
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const edm::Event& iEvent) const {
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bool found = iEvent.getByLabel(tag, c);
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if(!found ) {
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std::ostringstream err;
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err<<" cannot get PFCandidates: "
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<<tag<<std::endl;
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edm::LogError("PFCandidates")<<err.str();
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throw cms::Exception( "MissingProduct", err.str());
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}
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}
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#include "FWCore/Framework/interface/MakerMacros.h"
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DEFINE_FWK_MODULE(PATPFParticleProducer);
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