#include <PhysicsTools/PatAlgos/interface/PATPFParticleProducer.h>

Inheritance diagram for pat::PATPFParticleProducer:

Public Member Functions
	PATPFParticleProducer (const edm::ParameterSet &iConfig)
virtual void	produce (edm::Event &iEvent, const edm::EventSetup &iSetup)
	~PATPFParticleProducer ()
Private Member Functions
void	fetchCandidateCollection (edm::Handle< edm::View< reco::PFCandidate > > &c, const edm::InputTag &tag, const edm::Event &iSetup) const
Private Attributes
bool	addEfficiencies_
bool	addGenMatch_
bool	addResolutions_
pat::helper::EfficiencyLoader	efficiencyLoader_
bool	embedGenMatch_
bool	embedPFCandidate_
std::vector< edm::InputTag >	genMatchSrc_
edm::InputTag	pfCandidateSrc_
GreaterByPt< PFParticle >	pTComparator_
pat::helper::KinResolutionsLoader	resolutionLoader_

Detailed Description

Produces pat::PFParticle's.

The PATPFParticleProducer produces analysis-level pat::PFParticle's starting from a collection of objects of reco::PFCandidate.

Author:: Steven Lowette, Roger Wolf

Version:

Id:: PATPFParticleProducer.h,v 1.7 2010/02/20 21:00:26 wmtan Exp

Definition at line 41 of file PATPFParticleProducer.h.

Constructor & Destructor Documentation

PATPFParticleProducer::PATPFParticleProducer ( const edm::ParameterSet & iConfig ) [explicit]

Definition at line 26 of file PATPFParticleProducer.cc.

References addEfficiencies_, addGenMatch_, addResolutions_, efficiencyLoader_, embedGenMatch_, edm::ParameterSet::existsAs(), genMatchSrc_, edm::ParameterSet::getParameter(), pfCandidateSrc_, and resolutionLoader_.

                                                                            {
  // general configurables
  pfCandidateSrc_ = iConfig.getParameter<edm::InputTag>( "pfCandidateSource" );
 
  // MC matching configurables
  addGenMatch_   = iConfig.getParameter<bool>         ( "addGenMatch" );
  if (addGenMatch_) {
      embedGenMatch_ = iConfig.getParameter<bool>         ( "embedGenMatch" );
      if (iConfig.existsAs<edm::InputTag>("genParticleMatch")) {
          genMatchSrc_.push_back(iConfig.getParameter<edm::InputTag>( "genParticleMatch" ));
      } else {
          genMatchSrc_ = iConfig.getParameter<std::vector<edm::InputTag> >( "genParticleMatch" );
      }
  }

  // Efficiency configurables
  addEfficiencies_ = iConfig.getParameter<bool>("addEfficiencies");
  if (addEfficiencies_) {
     efficiencyLoader_ = pat::helper::EfficiencyLoader(iConfig.getParameter<edm::ParameterSet>("efficiencies"));
  }

  // Resolution configurables
  addResolutions_ = iConfig.getParameter<bool>("addResolutions");
  if (addResolutions_) {
     resolutionLoader_ = pat::helper::KinResolutionsLoader(iConfig.getParameter<edm::ParameterSet>("resolutions"));
  }



  // produces vector of muons
  produces<std::vector<PFParticle> >();

}

PATPFParticleProducer::~PATPFParticleProducer ( )

Definition at line 61 of file PATPFParticleProducer.cc.

{
}

Member Function Documentation

void PATPFParticleProducer::fetchCandidateCollection	(	edm::Handle< edm::View< reco::PFCandidate > > &	c,
		const edm::InputTag &	tag,
		const edm::Event &	iSetup
	)		const `[private]`

Definition at line 129 of file PATPFParticleProducer.cc.

References trackerHits::c, Exception, newFWLiteAna::found, and edm::Event::getByLabel().

Referenced by produce().

                                                                               {
  
  bool found = iEvent.getByLabel(tag, c);
  
  if(!found ) {
    std::ostringstream  err;
    err<<" cannot get PFCandidates: "
       <<tag<<std::endl;
    edm::LogError("PFCandidates")<<err.str();
    throw cms::Exception( "MissingProduct", err.str());
  }
  
}

void PATPFParticleProducer::produce	(	edm::Event &	iEvent,
		const edm::EventSetup &	iSetup
	)		`[virtual]`

Implements edm::EDProducer.

Definition at line 65 of file PATPFParticleProducer.cc.

References addGenMatch_, pat::PATObject< ObjectType >::addGenParticleRef(), efficiencyLoader_, embedGenMatch_, pat::PATObject< ObjectType >::embedGenParticle(), pat::helper::KinResolutionsLoader::enabled(), pat::helper::EfficiencyLoader::enabled(), fetchCandidateCollection(), genMatchSrc_, edm::Event::getByLabel(), i, j, n, pat::helper::EfficiencyLoader::newEvent(), pat::helper::KinResolutionsLoader::newEvent(), pfParticleProducer_cfi::patPFParticles, reco::tau::pfCandidates(), pfCandidateSrc_, pTComparator_, edm::Event::put(), resolutionLoader_, pat::helper::EfficiencyLoader::setEfficiencies(), pat::helper::KinResolutionsLoader::setResolutions(), and python::multivaluedict::sort().

                                                                  {

  // Get the collection of PFCandidates from the event
  edm::Handle<edm::View<reco::PFCandidate> > pfCandidates;

  fetchCandidateCollection(pfCandidates, 
                           pfCandidateSrc_, 
                           iEvent );

  // prepare the MC matching
  std::vector<edm::Handle<edm::Association<reco::GenParticleCollection> > > genMatches(genMatchSrc_.size());
  if (addGenMatch_) {
        for (size_t j = 0, nd = genMatchSrc_.size(); j < nd; ++j) {
            iEvent.getByLabel(genMatchSrc_[j], genMatches[j]);
        }
  }

  if (efficiencyLoader_.enabled()) efficiencyLoader_.newEvent(iEvent);
  if (resolutionLoader_.enabled()) resolutionLoader_.newEvent(iEvent, iSetup);

  // loop over PFCandidates
  std::vector<PFParticle> * patPFParticles = new std::vector<PFParticle>();
  for (edm::View<reco::PFCandidate>::const_iterator 
         itPFParticle = pfCandidates->begin(); 
       itPFParticle != pfCandidates->end(); 
       ++itPFParticle) {

    // construct the PFParticle from the ref -> save ref to original object
    unsigned int idx = itPFParticle - pfCandidates->begin();
    edm::RefToBase<reco::PFCandidate> pfCandidatesRef = pfCandidates->refAt(idx);

    PFParticle aPFParticle(pfCandidatesRef);

    if (addGenMatch_) {
      for(size_t i = 0, n = genMatches.size(); i < n; ++i) {
          reco::GenParticleRef genPFParticle = (*genMatches[i])[pfCandidatesRef];
          aPFParticle.addGenParticleRef(genPFParticle);
      }
      if (embedGenMatch_) aPFParticle.embedGenParticle();
    }
      
    if (efficiencyLoader_.enabled()) {
        efficiencyLoader_.setEfficiencies( aPFParticle, pfCandidatesRef );
    }

    if (resolutionLoader_.enabled()) {
        resolutionLoader_.setResolutions(aPFParticle);
    }

    // add sel to selected
    patPFParticles->push_back(aPFParticle);
  }

  // sort pfCandidates in pt
  std::sort(patPFParticles->begin(), patPFParticles->end(), pTComparator_);

  // put genEvt object in Event
  std::auto_ptr<std::vector<PFParticle> > ptr(patPFParticles);
  iEvent.put(ptr);

}