Inheritance diagram for GenParticleProducer:

Public Member Functions
int	chargeTimesThree (int) const
bool	convertParticle (reco::GenParticle &cand, const HepMC::GenParticle *part)
bool	fillDaughters (reco::GenParticleCollection &cand, const HepMC::GenParticle *part, size_t index)
bool	fillIndices (const HepMC::GenEvent mc, std::vector< const HepMC::GenParticle > &particles, std::vector< int > &barCodeVector, int offset)
	GenParticleProducer (const edm::ParameterSet &)
	constructor
virtual void	produce (edm::Event &e, const edm::EventSetup &)
	process one event
	~GenParticleProducer ()
	destructor
Public Attributes
std::map< int, size_t >	barcodes_
reco::GenParticleRefProd	ref_
Private Attributes
bool	abortOnUnknownPDGCode_
	unknown code treatment flag
std::vector< int >	chargeM_
std::map< int, int >	chargeMap_
std::vector< int >	chargeP_
	charge indices
bool	doSubEvent_
	input & output modes
bool	firstEvent_
	whether the first event was looked at
bool	saveBarCodes_
	save bar-codes
edm::InputTag	src_
	source collection name
bool	useCF_
std::vector< std::string >	vectorSrc_

Detailed Description

Definition at line 25 of file GenParticleProducer.cc.

Constructor & Destructor Documentation

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

constructor

Definition at line 85 of file GenParticleProducer.cc.

References ExpressReco_HICollisions_FallBack::alias, doSubEvent_, edm::ParameterSet::getParameter(), edm::ParameterSet::getUntrackedParameter(), saveBarCodes_, src_, useCF_, and vectorSrc_.

                                                                   :
  firstEvent_(true), 
  abortOnUnknownPDGCode_( cfg.getUntrackedParameter<bool>( "abortOnUnknownPDGCode", true ) ),
  saveBarCodes_( cfg.getUntrackedParameter<bool>( "saveBarCodes", false ) ),
  chargeP_( PDGCacheMax, 0 ), chargeM_( PDGCacheMax, 0 ),
  doSubEvent_(cfg.getUntrackedParameter<bool>( "doSubEvent", false )),
  useCF_(cfg.getUntrackedParameter<bool>( "useCrossingFrame", false ))
{
  produces<GenParticleCollection>();
  if( saveBarCodes_ ) {
    std::string alias( cfg.getParameter<std::string>( "@module_label" ) );
    produces<vector<int> >().setBranchAlias( alias + "BarCodes" );
  }                               

  if(doSubEvent_){
     vectorSrc_ = cfg.getParameter<std::vector<std::string> >( "srcVector" );
     //     produces<SubEventMap>();
  }else if(useCF_) src_ = cfg.getUntrackedParameter<InputTag>( "src" , InputTag("mix","generator"));
  else src_ = cfg.getParameter<InputTag>( "src" );
  
}

GenParticleProducer::~GenParticleProducer ( )

destructor

Definition at line 107 of file GenParticleProducer.cc.

                                          { 
}

Member Function Documentation

int GenParticleProducer::chargeTimesThree ( int id ) const

Definition at line 110 of file GenParticleProducer.cc.

References abortOnUnknownPDGCode_, abs, chargeM_, chargeMap_, chargeP_, Exception, f, ExpressReco_HICollisions_FallBack::id, edm::errors::LogicError, RecoTau_DiTaus_pt_20-420_cfg::ParticleID, and PDGCacheMax.

Referenced by convertParticle().

                                                        {
  if( std::abs( id ) < PDGCacheMax ) 
    return id > 0 ? chargeP_[ id ] : chargeM_[ - id ];
  map<int, int>::const_iterator f = chargeMap_.find( id );
  if ( f == chargeMap_.end() )  {
    if ( abortOnUnknownPDGCode_ )
      throw edm::Exception( edm::errors::LogicError ) 
        << "invalid PDG id: " << id << endl;
    else
      return HepPDT::ParticleID(id).threeCharge();
  }
  return f->second;
}

bool GenParticleProducer::convertParticle	(	reco::GenParticle &	cand,
		const HepMC::GenParticle *	part
	)

Definition at line 275 of file GenParticleProducer.cc.

References chargeTimesThree(), mmToCm, p4, benchmark_cfg::pdgId, reco::GenParticle::setCollisionId(), reco::LeafCandidate::setP4(), reco::LeafCandidate::setPdgId(), reco::LeafCandidate::setStatus(), reco::LeafCandidate::setThreeCharge(), reco::LeafCandidate::setVertex(), and v.

Referenced by produce().

                                                                                             {
   Candidate::LorentzVector p4( part->momentum() );
   int pdgId = part->pdg_id();
   cand.setThreeCharge( chargeTimesThree( pdgId ) );
   cand.setPdgId( pdgId );
   cand.setStatus( part->status() );
   cand.setP4( p4 );
   cand.setCollisionId(0);
   const GenVertex * v = part->production_vertex();
   if ( v != 0 ) {
      ThreeVector vtx = v->point3d();
      Candidate::Point vertex( vtx.x() * mmToCm, vtx.y() * mmToCm, vtx.z() * mmToCm );
      cand.setVertex( vertex );
   } else {
      cand.setVertex( Candidate::Point( 0, 0, 0 ) );
   }
   return true;
}

bool GenParticleProducer::fillDaughters	(	reco::GenParticleCollection &	cand,
		const HepMC::GenParticle *	part,
		size_t	index
	)

Definition at line 294 of file GenParticleProducer.cc.

References barcodes_, configurableAnalysis::GenParticle, getHLTprescales::index, m, ref_, and edm::second().

Referenced by produce().

                                                                                                                    {

   const GenVertex * productionVertex = part->production_vertex();
   size_t numberOfMothers = productionVertex->particles_in_size();
   if ( numberOfMothers > 0 ) {
      GenVertex::particles_in_const_iterator motherIt = productionVertex->particles_in_const_begin();
      for( ; motherIt != productionVertex->particles_in_const_end(); motherIt++) {
         const HepMC::GenParticle * mother = * motherIt;
         size_t m = barcodes_.find( mother->barcode() )->second;
         cands[ m ].addDaughter( GenParticleRef( ref_, index ) );
         cands[ index ].addMother( GenParticleRef( ref_, m ) );
      }
   }

   return true;
}

bool GenParticleProducer::fillIndices	(	const HepMC::GenEvent *	mc,
		std::vector< const HepMC::GenParticle * > &	particles,
		std::vector< int > &	barCodeVector,
		int	offset
	)

Definition at line 311 of file GenParticleProducer.cc.

References barcodes_, begin, end, configurableAnalysis::GenParticle, evf::evtn::offset(), and L1TEmulatorMonitor_cff::p.

Referenced by produce().

                                                                                                                                                 {
   size_t idx = offset;
   HepMC::GenEvent::particle_const_iterator begin = mc->particles_begin(), end = mc->particles_end();
   for( HepMC::GenEvent::particle_const_iterator p = begin; p != end; ++ p ) {
      const HepMC::GenParticle * particle = * p;
      size_t barCode_this_event = particle->barcode();
      size_t barCode = barCode_this_event + offset;
      if( barcodes_.find(barCode) != barcodes_.end() )
         throw cms::Exception( "WrongReference" )
            << "barcodes are duplicated! " << endl;
      particles[idx] = particle;
      barCodeVector[idx] = barCode;
      barcodes_.insert( make_pair(barCode_this_event, idx ++) );
   }
      return true;
}

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

process one event

fill indices

Implements edm::EDProducer.

Definition at line 124 of file GenParticleProducer.cc.

References abs, barcodes_, chargeM_, chargeMap_, chargeP_, convertParticle(), doSubEvent_, Exception, fillDaughters(), fillIndices(), firstEvent_, configurableAnalysis::GenParticle, edm::Event::getByLabel(), edm::EventSetup::getData(), edm::HepMCProduct::GetEvent(), MixCollection< T >::getObject(), edm::Event::getRefBeforePut(), patZpeak::handle, i, edm::RefProd< C >::id(), edm::errors::InvalidReference, LogDebug, evf::evtn::offset(), L1TEmulatorMonitor_cff::p, RecoTau_DiTaus_pt_20-420_cfg::ParticleID, PDGCacheMax, benchmark_cfg::pdgId, edm::Handle< T >::product(), edm::Event::put(), ref_, reco::CompositeRefCandidateT< D >::resetDaughters(), saveBarCodes_, MixCollection< T >::size(), findQualityFiles::size, src_, useCF_, and vectorSrc_.

                                                                    {

  if (firstEvent_) {
     ESHandle<HepPDT::ParticleDataTable> pdt;
     es.getData( pdt );
     for( HepPDT::ParticleDataTable::const_iterator p = pdt->begin(); p != pdt->end(); ++ p ) {
       const HepPDT::ParticleID & id = p->first;
       int pdgId = id.pid(), apdgId = std::abs( pdgId );
       int q3 = id.threeCharge();
       if ( apdgId < PDGCacheMax && pdgId > 0 ) {
         chargeP_[ apdgId ] = q3;
         chargeM_[ apdgId ] = -q3;
       } else if ( apdgId < PDGCacheMax ) {
         chargeP_[ apdgId ] = -q3;
         chargeM_[ apdgId ] = q3;
       } else {
         chargeMap_[ pdgId ] = q3;
         chargeMap_[ -pdgId ] = -q3;
       }
     }
     firstEvent_ = false; 
   }
      
   barcodes_.clear();
   
   size_t totalSize = 0;
   const GenEvent * mc = 0;   
   std::vector<Handle<HepMCProduct> > heps;
   MixCollection<HepMCProduct>* cfhepmcprod = 0;
   size_t npiles = vectorSrc_.size();

   if(useCF_){
      Handle<CrossingFrame<HepMCProduct> > cf;
      evt.getByLabel(InputTag("mix","generator"),cf);
      cfhepmcprod = new MixCollection<HepMCProduct>(cf.product());
      npiles = cfhepmcprod->size();
      for(unsigned int icf = 0; icf < npiles; ++icf){
         totalSize += cfhepmcprod->getObject(icf).GetEvent()->particles_size();
      }
   }else if (doSubEvent_){
      for(size_t i = 0; i < npiles; ++i){
        //       cout<<"Tag "<<vectorSrc_[i]<<endl;
         Handle<HepMCProduct> handle;
         heps.push_back(handle);
         evt.getByLabel( vectorSrc_[i], heps[i] );
         totalSize += heps[i]->GetEvent()->particles_size();
      }
   }else{
      Handle<HepMCProduct> mcp;
      evt.getByLabel( src_, mcp );
      mc = mcp->GetEvent();
      if( mc == 0 ) 
         throw edm::Exception( edm::errors::InvalidReference ) 
            << "HepMC has null pointer to GenEvent" << endl;
      totalSize  = mc->particles_size();
   }
      
   // initialise containers 
   const size_t size = totalSize;
  vector<const HepMC::GenParticle *> particles( size );
  auto_ptr<GenParticleCollection> candsPtr( new GenParticleCollection( size ) );
  //  auto_ptr<SubEventMap> subsPtr( new SubEventMap() );
  auto_ptr<vector<int> > barCodeVector( new vector<int>( size ) );
  ref_ = evt.getRefBeforePut<GenParticleCollection>();
  GenParticleCollection & cands = * candsPtr;
  //  SubEventMap & subs = *subsPtr;
  size_t offset = 0;
  size_t suboffset = 0;

  if(doSubEvent_ || useCF_){
     for(size_t i = 0; i < npiles; ++i){
        barcodes_.clear();
        if(useCF_) mc = cfhepmcprod->getObject(i).GetEvent();
        else mc = heps[i]->GetEvent();

        //Look whether heavy ion/signal event
        bool isHI = false;
        const HepMC::HeavyIon * hi = mc->heavy_ion();
        if(hi && hi->Ncoll_hard() > 1) isHI = true;
        size_t num_particles = mc->particles_size();
        fillIndices(mc, particles, *barCodeVector, offset);
        // fill output collection and save association 
        for( size_t i = offset; i < offset + num_particles; ++ i ) {

           const HepMC::GenParticle * part = particles[ i ];
           reco::GenParticle & cand = cands[ i ];
           // convert HepMC::GenParticle to new reco::GenParticle
           convertParticle(cand, part);
           cand.resetDaughters( ref_.id() );
        }

        for( size_t d = offset; d < offset + num_particles; ++ d ) {
           const HepMC::GenParticle * part = particles[ d ];
           const GenVertex * productionVertex = part->production_vertex();
           int sub_id = 0;
           if ( productionVertex != 0 ) {
              sub_id = productionVertex->id();
              if(!isHI) sub_id = 0;
              // search barcode map and attach daughters 
              fillDaughters(cands,part,d);
           }else{
              const GenVertex * endVertex = part->end_vertex();
              if(endVertex != 0) sub_id = endVertex->id();
              else throw cms::Exception( "SubEventID" )<<"SubEvent not determined. Particle has no production and no end vertex!"<<endl;
           }
           if(sub_id < 0) sub_id = 0;
           int new_id = sub_id + suboffset;
           GenParticleRef dref( ref_, d );
           //      subs.insert(dref,new_id);   // For SubEventMap
           cands[d].setCollisionId(new_id); // For new GenParticle
           LogDebug("VertexId")<<"SubEvent offset 3 : "<<suboffset;
        }
        int nsub = -2;
        if(isHI){
           nsub = hi->Ncoll_hard()+1;
           suboffset += nsub;
        }else{
           suboffset += 1;
        }
        offset += num_particles;
     }
  }else{
     fillIndices(mc, particles, *barCodeVector, 0);
     
     // fill output collection and save association
     for( size_t i = 0; i < particles.size(); ++ i ) {
        const HepMC::GenParticle * part = particles[ i ];
        reco::GenParticle & cand = cands[ i ];
        // convert HepMC::GenParticle to new reco::GenParticle
        convertParticle(cand, part);
        cand.resetDaughters( ref_.id() );
     }
     
     // fill references to daughters
     for( size_t d = 0; d < cands.size(); ++ d ) {
        const HepMC::GenParticle * part = particles[ d ];
        const GenVertex * productionVertex = part->production_vertex();
        // search barcode map and attach daughters
        if ( productionVertex != 0 ) fillDaughters(cands,part,d);
        cands[d].setCollisionId(0);
     }
  }
  
  evt.put( candsPtr );
  if(saveBarCodes_) evt.put( barCodeVector );
  //  if(doSubEvent_) evt.put(subsPtr); // For SubEventMap
  if(cfhepmcprod) delete cfhepmcprod;

}