Inheritance diagram for GenParticleDecaySelector:

Public Member Functions
	GenParticleDecaySelector (const edm::ParameterSet &)
	constructor More...

Public Member Functions inherited from edm::EDProducer
	EDProducer ()

virtual	~EDProducer ()

Public Member Functions inherited from edm::ProducerBase
	ProducerBase ()

void	registerProducts (ProducerBase , ProductRegistry , ModuleDescription const &)

boost::function< void(const BranchDescription &)>	registrationCallback () const
	used by the fwk to register list of products More...

virtual	~ProducerBase ()

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 More...

void	produce (edm::Event &e, const edm::EventSetup &)
	process one event More...

Private Attributes
bool	firstEvent_

PdtEntry	particle_
	particle type More...

edm::InputTag	src_
	source collection name More...

int	status_
	particle status More...

Additional Inherited Members
Public Types inherited from edm::EDProducer
typedef EDProducer	ModuleType

typedef WorkerT< EDProducer >	WorkerType

Public Types inherited from edm::ProducerBase
typedef ProductRegistryHelper::TypeLabelList	TypeLabelList

Static Public Member Functions inherited from edm::EDProducer
static const std::string &	baseType ()

static void	fillDescriptions (ConfigurationDescriptions &descriptions)

static void	prevalidate (ConfigurationDescriptions &descriptions)

Protected Member Functions inherited from edm::EDProducer
CurrentProcessingContext const *	currentContext () const

Protected Member Functions inherited from edm::ProducerBase
template<class TProducer , class TMethod >
void	callWhenNewProductsRegistered (TProducer *iProd, TMethod iMethod)

Detailed Description

Definition at line 14 of file GenParticleDecaySelector.cc.

Constructor & Destructor Documentation

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

constructor

Definition at line 43 of file GenParticleDecaySelector.cc.

                                                                              :
   firstEvent_(true),
   src_(cfg.getParameter<InputTag>("src")),
   particle_(cfg.getParameter<PdtEntry>("particle")),
   status_(cfg.getParameter<int>("status")) {
   produces<GenParticleCollection>();
 }

Member Function Documentation

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 65 of file GenParticleDecaySelector.cc.

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

Referenced by produce().

                                                          {
   size_t idx = decay.size();
   GenParticleRef r(ref, idx);
   decay.resize(idx+1);
   const LeafCandidate & part = p;
   GenParticle g(part);
   size_t n = p.numberOfDaughters();
   for(size_t i = 0; i < n; ++i) {
     pair<GenParticleRef, GenParticle*> d = add(decay, *p.daughterRef(i), ref);
     d.second->addMother(r);
     g.addDaughter(d.first);
   }
   GenParticle & gp = decay[idx] = g;
   return make_pair(r, &gp);
 }

void GenParticleDecaySelector::produce	(	edm::Event &	e,
		const edm::EventSetup &	es
	)

privatevirtual

process one event

Implements edm::EDProducer.

Definition at line 51 of file GenParticleDecaySelector.cc.

References add(), firstEvent_, g, genParticleCandidates2GenParticles_cfi::genParticles, edm::Event::getByLabel(), edm::Event::getRefBeforePut(), particle_, PdtEntry::pdgId(), edm::Event::put(), PdtEntry::setup(), src_, and status_.

                                                                              {
   if (firstEvent_) {particle_.setup(es); firstEvent_ = false;}
 
   Handle<GenParticleCollection> genParticles;
   evt.getByLabel(src_, genParticles);
   auto_ptr<GenParticleCollection> decay(new GenParticleCollection);
   const GenParticleRefProd ref = evt.getRefBeforePut<GenParticleCollection>();
   for(GenParticleCollection::const_iterator g = genParticles->begin();
       g != genParticles->end(); ++g)
     if(g->pdgId() == particle_.pdgId() && g->status() == status_)
       add(*decay, *g, ref);
   evt.put(decay);
 }