DimuonMCMatcher Class Reference

Inheritance diagram for DimuonMCMatcher:

List of all members.

Public Member Functions
	DimuonMCMatcher (const edm::ParameterSet &cfg)
virtual void	produce (edm::Event &, const edm::EventSetup &)
Private Attributes
edm::InputTag	src_

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Detailed Description

Definition at line 5 of file DimuonMCMatcher.cc.

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Constructor & Destructor Documentation

DimuonMCMatcher::DimuonMCMatcher

(

const edm::ParameterSet &

cfg

)

Definition at line 26 of file DimuonMCMatcher.cc.

                                                            : 
  src_(cfg.getParameter<InputTag>("src")) {
  produces<vector<GenParticleRef> >();
}

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Member Function Documentation

void DimuonMCMatcher::produce	(	edm::Event &	evt,
		const edm::EventSetup &
	)		[virtual]

Implements edm::EDProducer.

Definition at line 31 of file DimuonMCMatcher.cc.

References alignmentValidation::c1, Exception, pat::PATObject< ObjectType >::genParticleRef(), edm::RefToBase< T >::get(), edm::Event::getByLabel(), i, edm::errors::InvalidReference, edm::Ref< C, T, F >::isNonnull(), j, gen::k, reco::Candidate::masterClone(), edm::Event::put(), align_tpl::src, and src_.

                                                                 {
  Handle<CandidateView> src;
  evt.getByLabel(src_, src);
  auto_ptr<vector<GenParticleRef> > matched(new vector<GenParticleRef>);
  matched->reserve(src->size());
  int j=0;
  for(CandidateView::const_iterator i = src->begin(); i != src->end(); ++i) {
    j++;
    const Candidate * dau1 = i->daughter(0);
    const Candidate * dau2 = i->daughter(1);
    if(dau1 == 0|| dau2 == 0) 
      throw Exception(errors::InvalidReference) <<
        "one of the two daughter does not exist\n";
    const Candidate * c1 = dau1->masterClone().get();
    GenParticleRef mc1;
    const pat::Muon * mu1 = dynamic_cast<const pat::Muon*>(c1);
    if(mu1 != 0) {
      mc1 = mu1->genParticleRef();
      //     if (mc1.isNonnull()) cout << "DimuonMCMatcher> genParticleRef1 " << mc1->pdgId() << endl;
    } else {
      const pat::GenericParticle * gp1 = dynamic_cast<const pat::GenericParticle*>(c1);
      if(gp1 == 0) 
        throw Exception(errors::InvalidReference) <<
          "first of two daughter is neither a pat::Muon not pat::GenericParticle\n";
      mc1 = gp1->genParticleRef();
    }
    const Candidate * c2 = dau2->masterClone().get();
    GenParticleRef mc2;
    const pat::Muon * mu2 = dynamic_cast<const pat::Muon*>(c2);
    if(mu2 != 0) {
      mc2 = mu2->genParticleRef();
      //      if (mc2.isNonnull()) cout << "DimuonMCMatcher> genParticleRef2 " << mc2->pdgId() << endl;
    } else {
      const pat::GenericParticle * gp2 = dynamic_cast<const pat::GenericParticle*>(c2);
      if(gp2 == 0) 
        throw Exception(errors::InvalidReference) <<
          "first of two daughter is neither a pat::Muon not pat::GenericParticle\n";
      mc2 = gp2->genParticleRef();
    }
    GenParticleRef dimuonMatch;
    //    cout << "DimuonMatcher>  mc1 " << mc1.isNonnull() << "   mc2 " << mc2.isNonnull() << endl;
    if(mc1.isNonnull() && mc2.isNonnull()) {
      int k=0;
      do {
        k++;
        mc1 = mc1->numberOfMothers() > 0 ? mc1->motherRef() : GenParticleRef();
        mc2 = mc2->numberOfMothers() > 0 ? mc2->motherRef() : GenParticleRef();
        //      cout << "DimuonMCMatcher> do loop: " << k << "  id1 " << mc1->pdgId() << "    id2 " << mc2->pdgId() << endl;
      } while(mc1 != mc2 && mc1.isNonnull() && mc2.isNonnull());
      if(mc1.isNonnull() && mc2.isNonnull() && mc1->pdgId()==23) {
        dimuonMatch = mc1;
      }
    }
    //    cout << "DimuonMatcher> dimuonMatch " << dimuonMatch.isNonnull() << endl;
    matched->push_back(dimuonMatch);
  }

  evt.put(matched);
}

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Member Data Documentation

edm::InputTag DimuonMCMatcher::src_ [private]

Definition at line 10 of file DimuonMCMatcher.cc.

Referenced by produce().