EGEnergyAnalyzer.cc

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 // -*- C++ -*-
//
// Package:    EGEnergyAnalyzer
// Class:      EGEnergyAnalyzer
// 
//
// Original Author:  Josh Bendavid
//         Created:  Tue Nov  8 22:26:45 CET 2011
//
//


// system include files
#include <memory>

// user include files
#include "FWCore/Framework/interface/Frameworkfwd.h"
#include "FWCore/Framework/interface/one/EDAnalyzer.h"

#include "FWCore/Framework/interface/Event.h"
#include "FWCore/Framework/interface/MakerMacros.h"

#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "TFile.h"
#include "FWCore/ServiceRegistry/interface/Service.h"
//#include "CondCore/DBOutputService/interface/PoolDBOutputService.h"
//#include "CondCore/DBCommon/interface/CoralServiceManager.h"

#include "CondCore/DBOutputService/interface/PoolDBOutputService.h"
#include "FWCore/Framework/interface/ESHandle.h"
#include "FWCore/Framework/interface/EventSetup.h"
#include "RecoEcal/EgammaCoreTools/interface/EcalClusterLazyTools.h"
#include "RecoEgamma/EgammaTools/interface/EGEnergyCorrector.h"
#include "DataFormats/EgammaCandidates/interface/Photon.h"


//
// class declaration
//

class EGEnergyAnalyzer : public edm::one::EDAnalyzer<> {
public:
  explicit EGEnergyAnalyzer(const edm::ParameterSet&);
  ~EGEnergyAnalyzer() override;
  
  static void fillDescriptions(edm::ConfigurationDescriptions& descriptions);
  
  
private:
  void beginJob() override ;
  void analyze( const edm::Event&, const edm::EventSetup&) override;
  void endJob() override ;
  
  EGEnergyCorrector corfile;
  EGEnergyCorrector cordb;
  
  edm::EDGetTokenT<EcalRecHitCollection> ebRHToken_, eeRHToken_;
};


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

  ebRHToken_ = consumes<EcalRecHitCollection>(edm::InputTag("reducedEcalRecHitsEB"));
  eeRHToken_ = consumes<EcalRecHitCollection>(edm::InputTag("reducedEcalRecHitsEE"));
}


EGEnergyAnalyzer::~EGEnergyAnalyzer()
{
 
   // do anything here that needs to be done at desctruction time
   // (e.g. close files, deallocate resources etc.)

}


//
// member functions
//

// ------------ method called for each event  ------------
void
EGEnergyAnalyzer::analyze( const edm::Event& iEvent, const edm::EventSetup& iSetup)
{
   using namespace edm;

  if (!corfile.IsInitialized()) {
    corfile.Initialize(iSetup,"/afs/cern.ch/user/b/bendavid/cmspublic/gbrv3ph.root");
    //corfile.Initialize(iSetup,"wgbrph",true);
  }

  if (!cordb.IsInitialized()) {
    //cordb.Initialize(iSetup,"/afs/cern.ch/user/b/bendavid/cmspublic/regweights/gbrph.root");
    cordb.Initialize(iSetup,"wgbrph",true);
  }

  // get photon collection
  Handle<reco::PhotonCollection> hPhotonProduct;
  iEvent.getByLabel("photons",hPhotonProduct);
  
  EcalClusterLazyTools lazyTools(iEvent, iSetup, ebRHToken_, eeRHToken_);
  
  Handle<reco::VertexCollection> hVertexProduct;
  iEvent.getByLabel("offlinePrimaryVerticesWithBS", hVertexProduct);      
  
  for (reco::PhotonCollection::const_iterator it = hPhotonProduct->begin(); it!=hPhotonProduct->end(); ++it) {
    std::pair<double,double> corsfile = corfile.CorrectedEnergyWithError(*it, *hVertexProduct, lazyTools, iSetup);
    std::pair<double,double> corsdb = cordb.CorrectedEnergyWithError(*it, *hVertexProduct, lazyTools, iSetup);


    printf("file: default = %5f, correction = %5f, uncertainty = %5f\n", it->energy(),corsfile.first,corsfile.second);
    printf("db:   default = %5f, correction = %5f, uncertainty = %5f\n", it->energy(),corsdb.first,corsdb.second);

  }  




}


// ------------ method called once each job just before starting event loop  ------------
void 
EGEnergyAnalyzer::beginJob()
{



}

// ------------ method called once each job just after ending the event loop  ------------
void 
EGEnergyAnalyzer::endJob() 
{
}

// ------------ method fills 'descriptions' with the allowed parameters for the module  ------------
void
EGEnergyAnalyzer::fillDescriptions(edm::ConfigurationDescriptions& descriptions) {
  //The following says we do not know what parameters are allowed so do no validation
  // Please change this to state exactly what you do use, even if it is no parameters
  edm::ParameterSetDescription desc;
  desc.setUnknown();
  descriptions.addDefault(desc);
}

//define this as a plug-in
DEFINE_FWK_MODULE(EGEnergyAnalyzer);