/afs/cern.ch/work/a/aaltunda/public/www/CMSSW_5_3_14/src/RecoParticleFlow/PFProducer/plugins/PFBlockProducer.cc

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#include "RecoParticleFlow/PFProducer/plugins/PFBlockProducer.h"

#include "RecoParticleFlow/PFClusterTools/interface/PFEnergyCalibration.h"
#include "RecoParticleFlow/PFClusterTools/interface/PFEnergyResolution.h"

#include "DataFormats/ParticleFlowReco/interface/PFLayer.h"
#include "DataFormats/ParticleFlowReco/interface/PFCluster.h"
#include "DataFormats/ParticleFlowReco/interface/PFRecTrack.h" 
#include "DataFormats/ParticleFlowReco/interface/PFDisplacedVertexFwd.h"
#include "DataFormats/ParticleFlowReco/interface/PFDisplacedVertex.h"
#include "DataFormats/ParticleFlowReco/interface/PFConversionFwd.h"
#include "DataFormats/ParticleFlowReco/interface/PFConversion.h"
#include "DataFormats/ParticleFlowReco/interface/PFV0Fwd.h"
#include "DataFormats/ParticleFlowReco/interface/PFV0.h"

#include "DataFormats/EgammaCandidates/interface/Photon.h"
#include "DataFormats/EgammaCandidates/interface/PhotonFwd.h"

#include "FWCore/Framework/interface/ESHandle.h"

#include "FWCore/MessageLogger/interface/MessageLogger.h"
#include "FWCore/Utilities/interface/Exception.h"
#include "FWCore/Framework/interface/EventSetup.h"

#include "DataFormats/MuonReco/interface/MuonFwd.h"

#include "FWCore/ParameterSet/interface/FileInPath.h"

#include <set>

using namespace std;
using namespace edm;

PFBlockProducer::PFBlockProducer(const edm::ParameterSet& iConfig) {
  

  // use configuration file to setup input/output collection names
  inputTagRecTracks_ 
    = iConfig.getParameter<InputTag>("RecTracks");

  inputTagGsfRecTracks_ 
    = iConfig.getParameter<InputTag>("GsfRecTracks");

    inputTagConvBremGsfRecTracks_ 
    = iConfig.getParameter<InputTag>("ConvBremGsfRecTracks");

  inputTagRecMuons_ 
    = iConfig.getParameter<InputTag>("RecMuons");

  inputTagPFNuclear_ 
    = iConfig.getParameter<InputTag>("PFNuclear");

  inputTagPFConversions_ 
    = iConfig.getParameter<InputTag>("PFConversions");

  inputTagPFV0_ 
    = iConfig.getParameter<InputTag>("PFV0");

  inputTagPFClustersECAL_ 
    = iConfig.getParameter<InputTag>("PFClustersECAL");

  inputTagPFClustersHCAL_ 
    = iConfig.getParameter<InputTag>("PFClustersHCAL");

  inputTagPFClustersHO_ 
    = iConfig.getParameter<InputTag>("PFClustersHO");

  inputTagPFClustersHFEM_ 
    = iConfig.getParameter<InputTag>("PFClustersHFEM");

  inputTagPFClustersHFHAD_ 
    = iConfig.getParameter<InputTag>("PFClustersHFHAD");

  inputTagPFClustersPS_ 
    = iConfig.getParameter<InputTag>("PFClustersPS");

  useEGPhotons_ = iConfig.getParameter<bool>("useEGPhotons");
  
  if(useEGPhotons_) {
    inputTagEGPhotons_
      = iConfig.getParameter<InputTag>("EGPhotons");
  }

  verbose_ = 
    iConfig.getUntrackedParameter<bool>("verbose",false);

  bool debug_ = 
    iConfig.getUntrackedParameter<bool>("debug",false);

  usePFatHLT_ = iConfig.getParameter<bool>("usePFatHLT");

  useNuclear_ = iConfig.getParameter<bool>("useNuclear");

  useConversions_ = iConfig.getParameter<bool>("useConversions");
  
  useConvBremGsfTracks_ = iConfig.getParameter<bool>("useConvBremGsfTracks");

  bool useConvBremPFRecTracks = iConfig.getParameter<bool>("useConvBremPFRecTracks");

  useV0_ = iConfig.getParameter<bool>("useV0");

  useHO_=  iConfig.getParameter<bool>("useHO");

  produces<reco::PFBlockCollection>();
  
  // Glowinski & Gouzevitch
  useKDTreeTrackEcalLinker_ = iConfig.getParameter<bool>("useKDTreeTrackEcalLinker");
  // !Glowinski & Gouzevitch
  
  // particle flow parameters  -----------------------------------

  std::vector<double> DPtovPtCut 
     = iConfig.getParameter<std::vector<double> >("pf_DPtoverPt_Cut");   
  if (DPtovPtCut.size()!=5)
    {
      edm::LogError("MisConfiguration")<<" vector pf_DPtoverPt_Cut has to be of size 5";
      throw;
    }

  std::vector<unsigned> NHitCut 
     = iConfig.getParameter<std::vector<unsigned> >("pf_NHit_Cut");   
  if (NHitCut.size()!=5)
    {
      edm::LogError("MisConfiguration")<<" vector pf_NHit_Cut has to be of size 5";
      throw;
    }

  bool useIterTracking
    = iConfig.getParameter<bool>("useIterTracking");

  int nuclearInteractionsPurity
    = iConfig.getParameter<unsigned>("nuclearInteractionsPurity");

  // if first parameter 0, deactivated 
  std::vector<double> EGPhotonSelectionCuts ;

  if (useEGPhotons_)
    EGPhotonSelectionCuts = iConfig.getParameter<std::vector<double> >("PhotonSelectionCuts");   


  if (useNuclear_){
    if (nuclearInteractionsPurity > 3 || nuclearInteractionsPurity < 1)  {
      nuclearInteractionsPurity = 1;
      edm::LogInfo("PFBlockProducer")  << "NI purity not properly implemented. Set it to the strongest level " << nuclearInteractionsPurity << endl;
    }
    vector<string> securityLevel;
    securityLevel.push_back("isNucl"); securityLevel.push_back("isNucl && isNuclLoose");  securityLevel.push_back("isNucl && isNuclLoose && isNuclKink"); 
    edm::LogInfo("PFBlockProducer")  << "NI interactions are corrected in PFlow for " << securityLevel[nuclearInteractionsPurity-1].c_str() << endl;
  }


  pfBlockAlgo_.setParameters( DPtovPtCut,
                              NHitCut,
                              useConvBremPFRecTracks,
                              useIterTracking,
                              nuclearInteractionsPurity,
                              useEGPhotons_,
                              EGPhotonSelectionCuts );
  
  pfBlockAlgo_.setDebug(debug_);

  // Glowinski & Gouzevitch
  pfBlockAlgo_.setUseOptimization(useKDTreeTrackEcalLinker_);
  // !Glowinski & Gouzevitch

  // Use HO clusters for link
  pfBlockAlgo_.setHOTag(useHO_);

}



PFBlockProducer::~PFBlockProducer() { }



void 
PFBlockProducer::beginJob() { }

void 
PFBlockProducer::beginRun(edm::Run & run, 
                          const edm::EventSetup & es) { }


void 
PFBlockProducer::produce(Event& iEvent, 
                         const EventSetup& iSetup) {
  
  LogDebug("PFBlockProducer")<<"START event: "<<iEvent.id().event()
                             <<" in run "<<iEvent.id().run()<<endl;
  
  
  // get rectracks
  
  Handle< reco::PFRecTrackCollection > recTracks;
  
  // LogDebug("PFBlockProducer")<<"get reco tracks"<<endl;
  bool found = iEvent.getByLabel(inputTagRecTracks_, recTracks);
    
  if(!found )
    LogError("PFBlockProducer")<<" cannot get rectracks: "
                               <<inputTagRecTracks_<<endl;



  // get GsfTracks 
  Handle< reco::GsfPFRecTrackCollection > GsfrecTracks;

  if(!usePFatHLT_) {
    found = iEvent.getByLabel(inputTagGsfRecTracks_,GsfrecTracks);

    if(!found )
      LogError("PFBlockProducer")<<" cannot get Gsfrectracks: "
                                 << inputTagGsfRecTracks_ <<endl;
  }

  // get ConvBremGsfTracks 
  Handle< reco::GsfPFRecTrackCollection > convBremGsfrecTracks;

  if(useConvBremGsfTracks_) {
    found = iEvent.getByLabel(inputTagConvBremGsfRecTracks_,convBremGsfrecTracks);

    if(!found )
      LogError("PFBlockProducer")<<" cannot get ConvBremGsfrectracks: "
                                 << inputTagConvBremGsfRecTracks_ <<endl;
  }

  // get recmuons
  Handle< reco::MuonCollection > recMuons;

  // LogDebug("PFBlockProducer")<<"get reco muons"<<endl;
  //if(!usePFatHLT_) {
  found = iEvent.getByLabel(inputTagRecMuons_, recMuons);
  
    //if(!found )
    //  LogError("PFBlockProducer")<<" cannot get recmuons: "
    //                   <<inputTagRecMuons_<<endl;

  // get PFNuclearInteractions
  //}
  //---------- Gouzevitch
  //  Handle< reco::PFNuclearInteractionCollection > pfNuclears; 
  Handle< reco::PFDisplacedTrackerVertexCollection > pfNuclears; 

  if( useNuclear_ ) {

    found = iEvent.getByLabel(inputTagPFNuclear_, pfNuclears);
    if(!found )
      LogError("PFBlockProducer")<<" cannot get PFNuclearInteractions : "
                               <<inputTagPFNuclear_<<endl;
  }
 
  // get conversions
  Handle< reco::PFConversionCollection > pfConversions;
  if( useConversions_ ) {
    found = iEvent.getByLabel(inputTagPFConversions_, pfConversions);
    
    if(!found )
      LogError("PFBlockProducer")<<" cannot get PFConversions : "
                                 <<inputTagPFConversions_<<endl;
  }
  

  // get V0s
  Handle< reco::PFV0Collection > pfV0;
  if( useV0_ ) {
    found = iEvent.getByLabel(inputTagPFV0_, pfV0);
    
    if(!found )
      LogError("PFBlockProducer")<<" cannot get PFV0 : "
                                 <<inputTagPFV0_<<endl;
  }


  
  // get ECAL, HCAL, HO and PS clusters
  
  
  Handle< reco::PFClusterCollection > clustersECAL;
  found = iEvent.getByLabel(inputTagPFClustersECAL_, 
                            clustersECAL);      
  if(!found )
    LogError("PFBlockProducer")<<" cannot get ECAL clusters: "
                               <<inputTagPFClustersECAL_<<endl;
    
  
  Handle< reco::PFClusterCollection > clustersHCAL;
  found = iEvent.getByLabel(inputTagPFClustersHCAL_, 
                            clustersHCAL);      
  if(!found )
    LogError("PFBlockProducer")<<" cannot get HCAL clusters: "
                               <<inputTagPFClustersHCAL_<<endl;
    
  Handle< reco::PFClusterCollection > clustersHO;
  if (useHO_) {
    found = iEvent.getByLabel(inputTagPFClustersHO_, 
                              clustersHO);      
    if(!found )
      LogError("PFBlockProducer")<<" cannot get HO clusters: "
                                 <<inputTagPFClustersHO_<<endl;
  }

  Handle< reco::PFClusterCollection > clustersHFEM;
  found = iEvent.getByLabel(inputTagPFClustersHFEM_, 
                            clustersHFEM);      
  if(!found )
    LogError("PFBlockProducer")<<" cannot get HFEM clusters: "
                               <<inputTagPFClustersHFEM_<<endl;
    
  Handle< reco::PFClusterCollection > clustersHFHAD;
  found = iEvent.getByLabel(inputTagPFClustersHFHAD_, 
                            clustersHFHAD);      
  if(!found )
    LogError("PFBlockProducer")<<" cannot get HFHAD clusters: "
                               <<inputTagPFClustersHFHAD_<<endl;
    

  Handle< reco::PFClusterCollection > clustersPS;
  found = iEvent.getByLabel(inputTagPFClustersPS_, 
                            clustersPS);      
  if(!found )
    LogError("PFBlockProducer")<<" cannot get PS clusters: "
                               <<inputTagPFClustersPS_<<endl;

  // dummy. Not used in the full framework 
  Handle< reco::PFRecTrackCollection > nuclearRecTracks;

  
  Handle< reco::PhotonCollection >  egPhotons;
  found = iEvent.getByLabel(inputTagEGPhotons_,
                            egPhotons);

  if(!found && useEGPhotons_ )
    LogError("PFBlockProducer")<<" cannot get photons" 
                               << inputTagEGPhotons_ << endl;

  if( usePFatHLT_  ) {
     pfBlockAlgo_.setInput( recTracks,          
                            recMuons,
                            clustersECAL,
                            clustersHCAL,
                            clustersHO,
                            clustersHFEM,
                            clustersHFHAD,
                            clustersPS);
  } else { 
    pfBlockAlgo_.setInput( recTracks, 
                           GsfrecTracks,
                           convBremGsfrecTracks,
                           recMuons, 
                           pfNuclears,
                           nuclearRecTracks,
                           pfConversions,
                           pfV0,
                           clustersECAL,
                           clustersHCAL,
                           clustersHO,
                           clustersHFEM,
                           clustersHFHAD,
                           clustersPS,
                           egPhotons);
  }
  pfBlockAlgo_.findBlocks();
  
  if(verbose_) {
    ostringstream  str;
    str<<pfBlockAlgo_<<endl;
    LogInfo("PFBlockProducer") << str.str()<<endl;
  }    

  auto_ptr< reco::PFBlockCollection > 
    pOutputBlockCollection( pfBlockAlgo_.transferBlocks() ); 
  
  iEvent.put(pOutputBlockCollection);

  LogDebug("PFBlockProducer")<<"STOP event: "<<iEvent.id().event()
                             <<" in run "<<iEvent.id().run()<<endl;
}