CMSSW Reference Manual

GenParticleDecaySelector::GenParticleDecaySelector ( const edm::ParameterSet & cfg )

constructor

Definition at line 44 of file GenParticleDecaySelector.cc.

00044                                                                              :
00045   src_(cfg.getParameter<InputTag>("src")),
00046   particle_(cfg.getParameter<PdtEntry>("particle")),
00047   status_(cfg.getParameter<int>("status")) {
00048   produces<GenParticleCollection>();
00049 }

pair< GenParticleRef, GenParticle * > GenParticleDecaySelector::add	(	reco::GenParticleCollection &	decay,
		const reco::GenParticle &	p,
		reco::GenParticleRefProd	ref
	)			`[private]`

recursively add a new particle to the output collection

Definition at line 67 of file GenParticleDecaySelector.cc.

References reco::CompositeRefCandidateT< D >::addDaughter(), d, reco::CompositeRefCandidateT< D >::daughterRef(), g, i, n, reco::CompositeRefCandidateT< D >::numberOfDaughters(), and r.

00068                                                                                          {
00069   size_t idx = decay.size();
00070   GenParticleRef r(ref, idx);
00071   decay.resize(idx+1);
00072   const Particle & part = p;
00073   GenParticle g(part);
00074   size_t n = p.numberOfDaughters();
00075   for(size_t i = 0; i < n; ++i) {
00076     pair<GenParticleRef, GenParticle*> d = add(decay, *p.daughterRef(i), ref);
00077     d.second->addMother(r);
00078     g.addDaughter(d.first);
00079   }
00080   GenParticle & gp = decay[idx] = g;
00081   return make_pair(r, &gp);
00082 }

void GenParticleDecaySelector::beginJob ( const edm::EventSetup & es ) [private, virtual]

begin job

Reimplemented from edm::EDProducer.

Definition at line 51 of file GenParticleDecaySelector.cc.

References particle_, and PdtEntry::setup().

00051                                                                {
00052   particle_.setup(es);
00053 }

void GenParticleDecaySelector::produce	(	edm::Event &	e,
		const edm::EventSetup &
	)			`[private, virtual]`

process one event

Implements edm::EDProducer.

Definition at line 55 of file GenParticleDecaySelector.cc.

References g, genParticles_cfi::genParticles, edm::Event::getByLabel(), edm::Event::getRefBeforePut(), particle_, PdtEntry::pdgId(), edm::Event::put(), src_, and status_.

00055                                                                           {
00056   Handle<GenParticleCollection> genParticles;
00057   evt.getByLabel(src_, genParticles);
00058   auto_ptr<GenParticleCollection> decay(new GenParticleCollection);
00059   const GenParticleRefProd ref = evt.getRefBeforePut<GenParticleCollection>();
00060   for(GenParticleCollection::const_iterator g = genParticles->begin();
00061       g != genParticles->end(); ++g)
00062     if(g->pdgId() == particle_.pdgId() && g->status() == status_)
00063       add(*decay, *g, ref);
00064   evt.put(decay);
00065 }

PdtEntry GenParticleDecaySelector::particle_ [private]

particle type

Definition at line 26 of file GenParticleDecaySelector.cc.

Referenced by beginJob(), and produce().

edm::InputTag GenParticleDecaySelector::src_ [private]

source collection name

Definition at line 24 of file GenParticleDecaySelector.cc.

Referenced by produce().

int GenParticleDecaySelector::status_ [private]

particle status

Definition at line 28 of file GenParticleDecaySelector.cc.

Referenced by produce().

GenParticleDecaySelector Class Reference

Public Member Functions

Private Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation


Public Member Functions
	GenParticleDecaySelector (const edm::ParameterSet &)
	constructor
Private Member Functions
std::pair < reco::GenParticleRef, reco::GenParticle * >	add (reco::GenParticleCollection &, const reco::GenParticle &, reco::GenParticleRefProd)
	recursively add a new particle to the output collection
void	beginJob (const edm::EventSetup &)
	begin job
void	produce (edm::Event &e, const edm::EventSetup &)
	process one event
Private Attributes
PdtEntry	particle_
	particle type
edm::InputTag	src_
	source collection name
int	status_
	particle status