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//
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// $Id: DuplicatedElectronCleaner.cc,v 1.1.2.2.2.1 2009/01/12 22:08:06 gpetrucc Exp $
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//
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/**
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\class pat::DuplicatedElectronCleaner DuplicatedElectronCleaner.h "PhysicsTools/PatAlgos/interface/DuplicatedElectronCleaner.h"
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\brief Remove duplicates from the list of electrons
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The DuplicatedElectronCleaner removes duplicates from the input collection.
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Two electrons are considered duplicate if they share the same gsfTrack or the same superCluster.
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Among the two, the one with |E/P| nearest to 1 is kept.
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This is performed by the DuplicatedElectronRemover in PhysicsTools/PatUtils
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The output is an edm::RefVector<reco:::GsfElectron>,
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which can be read through edm::View<reco::GsfElectron>
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\author Giovanni Petrucciani
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\version $Id: DuplicatedElectronCleaner.cc,v 1.1.2.2.2.1 2009/01/12 22:08:06 gpetrucc Exp $
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*/
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#include "FWCore/Framework/interface/EDProducer.h"
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#include "FWCore/Framework/interface/Event.h"
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#include "FWCore/ParameterSet/interface/ParameterSet.h"
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#include "FWCore/ParameterSet/interface/InputTag.h"
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//#include "DataFormats/Common/interface/RefVector.h"
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#include "DataFormats/Common/interface/RefToBaseVector.h"
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//#include "DataFormats/Common/interface/PtrVector.h"
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#include "DataFormats/EgammaCandidates/interface/GsfElectronFwd.h"
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#include "DataFormats/EgammaCandidates/interface/GsfElectron.h"
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#include "PhysicsTools/PatUtils/interface/DuplicatedElectronRemover.h"
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namespace pat {
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class DuplicatedElectronCleaner : public edm::EDProducer {
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public:
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explicit DuplicatedElectronCleaner(const edm::ParameterSet & iConfig);
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~DuplicatedElectronCleaner();
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virtual void produce(edm::Event & iEvent, const edm::EventSetup & iSetup);
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virtual void endJob();
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private:
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edm::InputTag electronSrc_;
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pat::DuplicatedElectronRemover duplicateRemover_;
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uint64_t try_, pass_;
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};
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} // namespace
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pat::DuplicatedElectronCleaner::DuplicatedElectronCleaner(const edm::ParameterSet & iConfig) :
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electronSrc_(iConfig.getParameter<edm::InputTag>("electronSource")),
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try_(0), pass_(0)
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{
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//produces<edm::RefVector<reco::GsfElectronCollection> >();
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produces<edm::RefToBaseVector<reco::GsfElectron> >();
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//produces<edm::PtrVector<reco::GsfElectron> >();
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}
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pat::DuplicatedElectronCleaner::~DuplicatedElectronCleaner() {
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}
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void
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pat::DuplicatedElectronCleaner::produce(edm::Event & iEvent, const edm::EventSetup & iSetup) {
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using namespace edm;
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Handle<View<reco::GsfElectron> > electrons;
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iEvent.getByLabel(electronSrc_, electrons);
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try_ += electrons->size();
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//std::auto_ptr<RefVector<reco::GsfElectronCollection> > result(new RefVector<reco::GsfElectronCollection>());
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std::auto_ptr<RefToBaseVector<reco::GsfElectron> > result(new RefToBaseVector<reco::GsfElectron>());
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//std::auto_ptr<PtrVector<reco::GsfElectron> > result(new PtrVector<reco::GsfElectron>());
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std::auto_ptr< std::vector<size_t> > duplicates = duplicateRemover_.duplicatesToRemove(*electrons);
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std::vector<size_t>::const_iterator itdup = duplicates->begin(), enddup = duplicates->end();
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for (size_t i = 0, n = electrons->size(); i < n; ++i) {
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while ((itdup != enddup) && (*itdup < i)) { ++itdup; }
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if ((itdup != enddup) && (*itdup == i)) continue;
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//result->push_back(electrons->refAt(i).castTo<edm::Ref<reco::GsfElectronCollection> >());
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result->push_back(electrons->refAt(i));
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//result->push_back(electrons->ptrAt(i));
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}
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pass_ += result->size();
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iEvent.put(result);
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}
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void
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pat::DuplicatedElectronCleaner::endJob() {
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}
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#include "FWCore/Framework/interface/MakerMacros.h"
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using pat::DuplicatedElectronCleaner;
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DEFINE_FWK_MODULE(DuplicatedElectronCleaner);
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