#include "PhysicsTools/PatAlgos/interface/PATJetProducer.h"

Inheritance diagram for pat::PATJetProducer:

Public Member Functions
	PATJetProducer (const edm::ParameterSet &iConfig)

virtual void	produce (edm::Event &iEvent, const edm::EventSetup &iSetup)

	~PATJetProducer ()

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 ()

Static Public Member Functions
static void	fillDescriptions (edm::ConfigurationDescriptions &descriptions)

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

static void	fillDescriptions (ConfigurationDescriptions &descriptions)

static void	prevalidate (ConfigurationDescriptions &descriptions)

Private Attributes
bool	addAssociatedTracks_

bool	addBTagInfo_

bool	addDiscriminators_

bool	addEfficiencies_

bool	addGenJetMatch_

bool	addGenPartonMatch_

bool	addJetCharge_

bool	addJetCorrFactors_

bool	addJetID_

bool	addPartonJetMatch_

bool	addResolutions_

bool	addTagInfos_

GreaterByPt< CaloTower >	caloPTComparator_

std::vector< std::string >	discriminatorLabels_

std::vector< edm::InputTag >	discriminatorTags_

pat::helper::EfficiencyLoader	efficiencyLoader_

bool	embedCaloTowers_

bool	embedGenJetMatch_

bool	embedGenPartonMatch_

bool	embedPFCandidates_

edm::InputTag	genJetSrc_

edm::InputTag	genPartonSrc_

bool	getJetMCFlavour_

edm::InputTag	jetCharge_

std::vector< edm::InputTag >	jetCorrFactorsSrc_

edm::InputTag	jetIDMapLabel_

edm::InputTag	jetPartonMapSource_

edm::InputTag	jetsSrc_

edm::InputTag	partonJetSrc_

GreaterByPt< Jet >	pTComparator_

pat::helper::KinResolutionsLoader	resolutionLoader_

std::vector< std::string >	tagInfoLabels_

std::vector< edm::InputTag >	tagInfoTags_

edm::InputTag	trackAssociation_

pat::PATUserDataHelper< pat::Jet >	userDataHelper_

bool	useUserData_

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

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

Produces pat::Jet's.

The PATJetProducer produces analysis-level pat::Jet's starting from a collection of objects of JetType.

Author: Steven Lowette, Jeremy Andrea

Version

Id:: PATJetProducer.h,v 1.26 2010/08/09 18:13:54 srappocc Exp

Definition at line 45 of file PATJetProducer.h.

Constructor & Destructor Documentation

PATJetProducer::PATJetProducer ( const edm::ParameterSet & iConfig )

explicit

Definition at line 45 of file PATJetProducer.cc.

References addAssociatedTracks_, addBTagInfo_, addDiscriminators_, addEfficiencies_, addGenJetMatch_, addGenPartonMatch_, addJetCharge_, addJetCorrFactors_, addJetID_, addPartonJetMatch_, addResolutions_, addTagInfos_, discriminatorLabels_, discriminatorTags_, efficiencyLoader_, embedCaloTowers_, embedGenJetMatch_, embedGenPartonMatch_, embedPFCandidates_, genJetSrc_, genPartonSrc_, getJetMCFlavour_, edm::ParameterSet::getParameter(), jetCharge_, jetCorrFactorsSrc_, jetIDMapLabel_, jetPartonMapSource_, jetsSrc_, diffTwoXMLs::label, partonJetSrc_, pos, resolutionLoader_, tagInfoLabels_, tagInfoTags_, trackAssociation_, userDataHelper_, and useUserData_.

                                                               :
   useUserData_(iConfig.exists("userData"))
 {
   // initialize configurables
   jetsSrc_ = iConfig.getParameter<edm::InputTag>( "jetSource" );
   embedCaloTowers_ = iConfig.getParameter<bool>( "embedCaloTowers" );
   embedPFCandidates_ = iConfig.getParameter<bool>( "embedPFCandidates" );
   getJetMCFlavour_ = iConfig.getParameter<bool>( "getJetMCFlavour" );
   jetPartonMapSource_ = iConfig.getParameter<edm::InputTag>( "JetPartonMapSource" );
   addGenPartonMatch_ = iConfig.getParameter<bool>( "addGenPartonMatch" );
   embedGenPartonMatch_ = iConfig.getParameter<bool>( "embedGenPartonMatch" );
   genPartonSrc_ = iConfig.getParameter<edm::InputTag>( "genPartonMatch" );
   addGenJetMatch_ = iConfig.getParameter<bool>( "addGenJetMatch" );
   embedGenJetMatch_ = iConfig.getParameter<bool>( "embedGenJetMatch" );
   genJetSrc_ = iConfig.getParameter<edm::InputTag>( "genJetMatch" );
   addPartonJetMatch_ = iConfig.getParameter<bool>( "addPartonJetMatch" );
   partonJetSrc_ = iConfig.getParameter<edm::InputTag>( "partonJetSource" );
   addJetCorrFactors_ = iConfig.getParameter<bool>( "addJetCorrFactors" );
   jetCorrFactorsSrc_ = iConfig.getParameter<std::vector<edm::InputTag> >( "jetCorrFactorsSource" );
   addBTagInfo_ = iConfig.getParameter<bool>( "addBTagInfo" );
   addDiscriminators_ = iConfig.getParameter<bool>( "addDiscriminators" );
   discriminatorTags_ = iConfig.getParameter<std::vector<edm::InputTag> >( "discriminatorSources" );
   addTagInfos_ = iConfig.getParameter<bool>( "addTagInfos" );
   tagInfoTags_ = iConfig.getParameter<std::vector<edm::InputTag> >( "tagInfoSources" );
   addAssociatedTracks_ = iConfig.getParameter<bool>( "addAssociatedTracks" ); 
   trackAssociation_ = iConfig.getParameter<edm::InputTag>( "trackAssociationSource" );
   addJetCharge_ = iConfig.getParameter<bool>( "addJetCharge" ); 
   jetCharge_ = iConfig.getParameter<edm::InputTag>( "jetChargeSource" );
   addJetID_ = iConfig.getParameter<bool>( "addJetID");
   jetIDMapLabel_ = iConfig.getParameter<edm::InputTag>( "jetIDMap");
   // 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"));
   }
   if (discriminatorTags_.empty()) { 
     addDiscriminators_ = false; 
   } else {
     for (std::vector<edm::InputTag>::const_iterator it = discriminatorTags_.begin(), ed = discriminatorTags_.end(); it != ed; ++it) {
         std::string label = it->label();
         std::string::size_type pos = label.find("JetTags");
         if ((pos !=  std::string::npos) && (pos != label.length() - 7)) {
             label.erase(pos+7); // trim a tail after "JetTags"
         }
         discriminatorLabels_.push_back(label);
     }
   }
   if (tagInfoTags_.empty()) { 
     addTagInfos_ = false; 
   } else {
     for (std::vector<edm::InputTag>::const_iterator it = tagInfoTags_.begin(), ed = tagInfoTags_.end(); it != ed; ++it) {
         std::string label = it->label();
         std::string::size_type pos = label.find("TagInfos");
         if ((pos !=  std::string::npos) && (pos != label.length() - 8)) {
             label.erase(pos+8); // trim a tail after "TagInfos"
         }
         tagInfoLabels_.push_back(label);
     }
   }
   if (!addBTagInfo_) { addDiscriminators_ = false; addTagInfos_ = false; }
   // Check to see if the user wants to add user data
   if ( useUserData_ ) {
     userDataHelper_ = PATUserDataHelper<Jet>(iConfig.getParameter<edm::ParameterSet>("userData"));
   }
   // produces vector of jets
   produces<std::vector<Jet> >();
   produces<reco::GenJetCollection> ("genJets");
   produces<std::vector<CaloTower>  > ("caloTowers");
   produces<reco::PFCandidateCollection > ("pfCandidates");
   produces<edm::OwnVector<reco::BaseTagInfo> > ("tagInfos");
 }

PATJetProducer::~PATJetProducer ( )

Definition at line 123 of file PATJetProducer.cc.

                                 {
 
 }

Member Function Documentation

void PATJetProducer::fillDescriptions ( edm::ConfigurationDescriptions & descriptions )

static

Definition at line 406 of file PATJetProducer.cc.

References edm::ConfigurationDescriptions::add(), edm::ParameterSetDescription::add(), edm::ParameterSetDescription::addOptional(), pat::helper::KinResolutionsLoader::fillDescription(), pat::PATUserDataHelper< ObjectType >::fillDescription(), edm::ParameterSetDescription::setAllowAnything(), and edm::ParameterSetDescription::setComment().

 {
   edm::ParameterSetDescription iDesc;
   iDesc.setComment("PAT jet producer module");
 
   // input source 
   iDesc.add<edm::InputTag>("jetSource", edm::InputTag("no default"))->setComment("input collection");
 
   // embedding
   iDesc.add<bool>("embedCaloTowers", true)->setComment("embed external calo towers");
   iDesc.add<bool>("embedPFCandidates", true)->setComment("embed external PFCandidates");
 
   // MC matching configurables
   iDesc.add<bool>("addGenPartonMatch", true)->setComment("add MC matching");
   iDesc.add<bool>("embedGenPartonMatch", false)->setComment("embed MC matched MC information");
   iDesc.add<edm::InputTag>("genPartonMatch", edm::InputTag())->setComment("input with MC match information");
 
   iDesc.add<bool>("addGenJetMatch", true)->setComment("add MC matching");
   iDesc.add<bool>("embedGenJetMatch", false)->setComment("embed MC matched MC information");
   iDesc.add<edm::InputTag>("genJetMatch", edm::InputTag())->setComment("input with MC match information");
 
   iDesc.add<bool>("addJetCharge", true);
   iDesc.add<edm::InputTag>("jetChargeSource", edm::InputTag("patJetCharge"));
   
   // jet id
   iDesc.add<bool>("addJetID", true)->setComment("Add jet ID information");
   iDesc.add<edm::InputTag>("jetIDMap", edm::InputTag())->setComment("jet id map");
 
   iDesc.add<bool>("addPartonJetMatch", false);
   iDesc.add<edm::InputTag>("partonJetSource", edm::InputTag("NOT IMPLEMENTED"));
 
   // track association
   iDesc.add<bool>("addAssociatedTracks", true);
   iDesc.add<edm::InputTag>("trackAssociationSource", edm::InputTag("ic5JetTracksAssociatorAtVertex"));
 
   // tag info
   iDesc.add<bool>("addTagInfos", true);
   std::vector<edm::InputTag> emptyVInputTags;
   iDesc.add<std::vector<edm::InputTag> >("tagInfoSources", emptyVInputTags);
 
   // jet energy corrections
   iDesc.add<bool>("addJetCorrFactors", true);
   iDesc.add<std::vector<edm::InputTag> >("jetCorrFactorsSource", emptyVInputTags);
 
   // btag discriminator tags
   iDesc.add<bool>("addBTagInfo",true);
   iDesc.add<bool>("addDiscriminators", true);
   iDesc.add<std::vector<edm::InputTag> >("discriminatorSources", emptyVInputTags);
 
   // jet flavour idetification configurables
   iDesc.add<bool>("getJetMCFlavour", true);
   iDesc.add<edm::InputTag>("JetPartonMapSource", edm::InputTag("jetFlavourAssociation"));
 
   pat::helper::KinResolutionsLoader::fillDescription(iDesc);
 
   // Efficiency configurables
   edm::ParameterSetDescription efficienciesPSet;
   efficienciesPSet.setAllowAnything(); // TODO: the pat helper needs to implement a description.
   iDesc.add("efficiencies", efficienciesPSet);
   iDesc.add<bool>("addEfficiencies", false);
 
   // Check to see if the user wants to add user data
   edm::ParameterSetDescription userDataPSet;
   PATUserDataHelper<Jet>::fillDescription(userDataPSet);
   iDesc.addOptional("userData", userDataPSet);
 
   descriptions.add("PATJetProducer", iDesc);
 }

void PATJetProducer::produce	(	edm::Event &	iEvent,
		const edm::EventSetup &	iSetup
	)

virtual

Implements edm::EDProducer.

Definition at line 128 of file PATJetProducer.cc.

References addAssociatedTracks_, pat::Jet::addBDiscriminatorPair(), addBTagInfo_, addDiscriminators_, addGenJetMatch_, addGenPartonMatch_, pat::Jet::addJECFactors(), addJetCharge_, addJetCorrFactors_, addJetID_, addPartonJetMatch_, pat::Jet::addTagInfo(), addTagInfos_, edm::View< T >::begin(), discriminatorLabels_, discriminatorTags_, efficiencyLoader_, embedCaloTowers_, embedGenPartonMatch_, embedPFCandidates_, pat::helper::EfficiencyLoader::enabled(), pat::helper::KinResolutionsLoader::enabled(), edm::View< T >::end(), spr::find(), first, genJetSrc_, genPartonSrc_, edm::RefToBase< T >::get(), edm::Event::getByLabel(), reco::CaloJet::getCaloConstituents(), reco::JPTJet::getCaloJetRef(), getJetMCFlavour_, reco::PFJet::getPFConstituents(), edm::Event::getRefBeforePut(), i, pat::Jet::initializeJEC(), edm::Ref< C, T, F >::isAvailable(), pat::Jet::isCaloJet(), pat::Jet::isJPTJet(), edm::Ptr< T >::isNonnull(), edm::Ref< C, T, F >::isNonnull(), pat::Jet::isPFJet(), edm::EventBase::isRealData(), metsig::jet, jetCharge_, jetCorrFactorsSrc_, jetIDMapLabel_, jetPartonMapSource_, fwrapper::jets, jetsSrc_, gen::k, match(), pat::helper::EfficiencyLoader::newEvent(), pat::helper::KinResolutionsLoader::newEvent(), jetProducer_cfi::patJets, pTComparator_, edm::View< T >::ptrAt(), edm::Event::put(), resolutionLoader_, pat::Jet::setAssociatedTracks(), pat::Jet::setCaloTowers(), pat::helper::EfficiencyLoader::setEfficiencies(), pat::Jet::setGenJetRef(), pat::Jet::setGenParton(), pat::Jet::setJetCharge(), pat::Jet::setJetID(), pat::Jet::setPartonFlavour(), pat::Jet::setPFCandidates(), pat::helper::KinResolutionsLoader::setResolutions(), edm::View< T >::size(), python.multivaluedict::sort(), tagInfoLabels_, tagInfoTags_, trackAssociation_, userDataHelper_, useUserData_, and relativeConstraints::value.

 {
   // check whether dealing with MC or real data
   if (iEvent.isRealData()){
     getJetMCFlavour_   = false;
     addGenPartonMatch_ = false;
     addGenJetMatch_    = false;
     addPartonJetMatch_ = false;
   }
   
   // Get the vector of jets
   edm::Handle<edm::View<reco::Jet> > jets;
   iEvent.getByLabel(jetsSrc_, jets);
 
   if (efficiencyLoader_.enabled()) efficiencyLoader_.newEvent(iEvent);
   if (resolutionLoader_.enabled()) resolutionLoader_.newEvent(iEvent, iSetup);
 
   // for jet flavour
   edm::Handle<reco::JetFlavourMatchingCollection> jetFlavMatch;
   if (getJetMCFlavour_) iEvent.getByLabel (jetPartonMapSource_, jetFlavMatch);
 
   // Get the vector of generated particles from the event if needed
   edm::Handle<edm::Association<reco::GenParticleCollection> > partonMatch;
   if (addGenPartonMatch_) iEvent.getByLabel(genPartonSrc_,  partonMatch);
   // Get the vector of GenJets from the event if needed
   edm::Handle<edm::Association<reco::GenJetCollection> > genJetMatch;
   if (addGenJetMatch_) iEvent.getByLabel(genJetSrc_, genJetMatch);
 /* TO BE IMPLEMENTED FOR >= 1_5_X
   // Get the vector of PartonJets from the event if needed
   edm::Handle<edm::View<reco::SomePartonJetType> > partonJets;
   if (addPartonJetMatch_) iEvent.getByLabel(partonJetSrc_, partonJets);
 */
 
   // read in the jet correction factors ValueMap
   std::vector<edm::ValueMap<JetCorrFactors> > jetCorrs;
   if (addJetCorrFactors_) {
     for ( size_t i = 0; i < jetCorrFactorsSrc_.size(); ++i ) {
       edm::Handle<edm::ValueMap<JetCorrFactors> > jetCorr;
       iEvent.getByLabel(jetCorrFactorsSrc_[i], jetCorr);
       jetCorrs.push_back( *jetCorr );
     }
   }  
 
   // Get the vector of jet tags with b-tagging info
   std::vector<edm::Handle<reco::JetFloatAssociation::Container> > jetDiscriminators;
   if (addBTagInfo_ && addDiscriminators_) {
     jetDiscriminators.resize(discriminatorTags_.size());
     for (size_t i = 0; i < discriminatorTags_.size(); ++i) {
         iEvent.getByLabel(discriminatorTags_[i], jetDiscriminators[i]);
     }
   }
   std::vector<edm::Handle<edm::View<reco::BaseTagInfo> > > jetTagInfos;
   if (addBTagInfo_ && addTagInfos_) {
     jetTagInfos.resize(tagInfoTags_.size());
     for (size_t i = 0; i < tagInfoTags_.size(); ++i) {
       iEvent.getByLabel(tagInfoTags_[i], jetTagInfos[i]);
     }
   }
  
   // tracks Jet Track Association
   edm::Handle<reco::JetTracksAssociation::Container > hTrackAss;
   if (addAssociatedTracks_) iEvent.getByLabel(trackAssociation_, hTrackAss);
   edm::Handle<reco::JetFloatAssociation::Container > hJetChargeAss;
   if (addJetCharge_) iEvent.getByLabel(jetCharge_, hJetChargeAss);
 
   // jet ID handle
   edm::Handle<reco::JetIDValueMap> hJetIDMap;
   if ( addJetID_ ) iEvent.getByLabel( jetIDMapLabel_, hJetIDMap );
 
   // loop over jets
   std::auto_ptr< std::vector<Jet> > patJets ( new std::vector<Jet>() ); 
 
   std::auto_ptr<reco::GenJetCollection > genJetsOut ( new reco::GenJetCollection() );
   std::auto_ptr<std::vector<CaloTower>  >  caloTowersOut( new std::vector<CaloTower> () );
   std::auto_ptr<reco::PFCandidateCollection > pfCandidatesOut( new reco::PFCandidateCollection() );
   std::auto_ptr<edm::OwnVector<reco::BaseTagInfo> > tagInfosOut ( new edm::OwnVector<reco::BaseTagInfo>() );  
 
 
   edm::RefProd<reco::GenJetCollection > h_genJetsOut = iEvent.getRefBeforePut<reco::GenJetCollection >( "genJets" );
   edm::RefProd<std::vector<CaloTower>  >  h_caloTowersOut = iEvent.getRefBeforePut<std::vector<CaloTower>  > ( "caloTowers" );
   edm::RefProd<reco::PFCandidateCollection > h_pfCandidatesOut = iEvent.getRefBeforePut<reco::PFCandidateCollection > ( "pfCandidates" );
   edm::RefProd<edm::OwnVector<reco::BaseTagInfo> > h_tagInfosOut = iEvent.getRefBeforePut<edm::OwnVector<reco::BaseTagInfo> > ( "tagInfos" );
 
 
   
 
   bool first=true; // this is introduced to issue warnings only for the first jet
   for (edm::View<reco::Jet>::const_iterator itJet = jets->begin(); itJet != jets->end(); itJet++) {
 
     // construct the Jet from the ref -> save ref to original object
     unsigned int idx = itJet - jets->begin();
     edm::RefToBase<reco::Jet> jetRef = jets->refAt(idx);
     edm::Ptr<reco::Jet> jetPtr = jets->ptrAt(idx); 
     Jet ajet(jetRef);
 
     // add the FwdPtrs to the CaloTowers
     if ( (ajet.isCaloJet() || ajet.isJPTJet() ) && embedCaloTowers_) {
       const reco::CaloJet *cj = 0;
       const reco::JPTJet * jptj = 0;
       if ( ajet.isCaloJet()) cj = dynamic_cast<const reco::CaloJet *>(jetRef.get());      
       else { 
     jptj = dynamic_cast<const reco::JPTJet *>(jetRef.get() );
     cj = dynamic_cast<const reco::CaloJet *>(jptj->getCaloJetRef().get() );
       }
       pat::CaloTowerFwdPtrCollection itowersRef;
       std::vector< CaloTowerPtr > itowers = cj->getCaloConstituents();
       for ( std::vector<CaloTowerPtr>::const_iterator towBegin = itowers.begin(),
           towEnd = itowers.end(), itow = towBegin;
         itow != towEnd; ++itow ) {
     caloTowersOut->push_back( **itow );
     // set the "forward" ref to the thinned collection
     edm::Ref<std::vector<CaloTower> > caloTowerRef( h_caloTowersOut, caloTowersOut->size() - 1);
     edm::Ptr<CaloTower> caloForwardRef ( h_caloTowersOut.id(), caloTowerRef.key(), h_caloTowersOut.productGetter() );
     // set the "backward" ref to the original collection for association
     edm::Ptr<CaloTower> caloBackRef ( *itow );  
     // add to the list of FwdPtr's
     itowersRef.push_back( pat::CaloTowerFwdPtrCollection::value_type ( caloForwardRef, caloBackRef ) );
     
       }
       ajet.setCaloTowers( itowersRef );
     }
 
     // add the FwdPtrs to the PFCandidates
     if (ajet.isPFJet() && embedPFCandidates_) {
       const reco::PFJet *cj = dynamic_cast<const reco::PFJet *>(jetRef.get());
       pat::PFCandidateFwdPtrCollection iparticlesRef;
       std::vector< reco::PFCandidatePtr > iparticles = cj->getPFConstituents();
       for ( std::vector<reco::PFCandidatePtr>::const_iterator partBegin = iparticles.begin(),
           partEnd = iparticles.end(), ipart = partBegin;
         ipart != partEnd; ++ipart ) {
     pfCandidatesOut->push_back( **ipart );
     // set the "forward" ref to the thinned collection
     edm::Ref<reco::PFCandidateCollection> pfCollectionRef( h_pfCandidatesOut, pfCandidatesOut->size() - 1);
     edm::Ptr<reco::PFCandidate> pfForwardRef ( h_pfCandidatesOut.id(), pfCollectionRef.key(),  h_pfCandidatesOut.productGetter() );
     // set the "backward" ref to the original collection for association
     edm::Ptr<reco::PFCandidate> pfBackRef ( *ipart );
     // add to the list of FwdPtr's
     iparticlesRef.push_back( pat::PFCandidateFwdPtrCollection::value_type ( pfForwardRef, pfBackRef ) );
       }
       ajet.setPFCandidates( iparticlesRef );
     }
 
     if (addJetCorrFactors_) {
       // add additional JetCorrs to the jet 
       for ( unsigned int i=0; i<jetCorrFactorsSrc_.size(); ++i ) {
     const JetCorrFactors& jcf = jetCorrs[i][jetRef];
     // uncomment for debugging
     // jcf.print();
     ajet.addJECFactors(jcf);
       }
       std::vector<std::string> levels = jetCorrs[0][jetRef].correctionLabels();
       if(std::find(levels.begin(), levels.end(), "L2L3Residual")!=levels.end()){
     ajet.initializeJEC(jetCorrs[0][jetRef].jecLevel("L2L3Residual"));
       }
       else if(std::find(levels.begin(), levels.end(), "L3Absolute")!=levels.end()){
     ajet.initializeJEC(jetCorrs[0][jetRef].jecLevel("L3Absolute"));
       }
       else{
     ajet.initializeJEC(jetCorrs[0][jetRef].jecLevel("Uncorrected"));
     if(first){    
       edm::LogWarning("L3Absolute not found") << "L2L3Residual and L3Absolute are not part of the correction applied jetCorrFactors \n"
                           << "of module " <<  jetCorrs[0][jetRef].jecSet() << " jets will remain"
                           << " uncorrected."; first=false;
     }
       }
     }
 
     // get the MC flavour information for this jet
     if (getJetMCFlavour_) {
         ajet.setPartonFlavour( (*jetFlavMatch)[edm::RefToBase<reco::Jet>(jetRef)].getFlavour() );
     }
     // store the match to the generated partons
     if (addGenPartonMatch_) {
       reco::GenParticleRef parton = (*partonMatch)[jetRef];
       if (parton.isNonnull() && parton.isAvailable()) {
           ajet.setGenParton(parton, embedGenPartonMatch_);
       } // leave empty if no match found
     }
     // store the match to the GenJets
     if (addGenJetMatch_) {
       reco::GenJetRef genjet = (*genJetMatch)[jetRef];
       if (genjet.isNonnull() && genjet.isAvailable()) {
     genJetsOut->push_back( *genjet );
     // set the "forward" ref to the thinned collection
     edm::Ref<reco::GenJetCollection > genForwardRef ( h_genJetsOut, genJetsOut->size() - 1 );
     // set the "backward" ref to the original collection
     edm::Ref<reco::GenJetCollection > genBackRef ( genjet );
     // make the FwdPtr
     edm::FwdRef<reco::GenJetCollection > genjetFwdRef ( genForwardRef, genBackRef );
     ajet.setGenJetRef(genjetFwdRef );
       } // leave empty if no match found
     }
 
     if (efficiencyLoader_.enabled()) {
         efficiencyLoader_.setEfficiencies( ajet, jetRef );
     }
 
     // IMPORTANT: DO THIS AFTER JES CORRECTIONS
     if (resolutionLoader_.enabled()) {
         resolutionLoader_.setResolutions(ajet);
     }
 
     // TO BE IMPLEMENTED FOR >=1_5_X: do the PartonJet matching
     if (addPartonJetMatch_) {
     }
 
     // add b-tag info if available & required
     if (addBTagInfo_) {
         if (addDiscriminators_) {
             for (size_t k=0; k<jetDiscriminators.size(); ++k) {
                 float value = (*jetDiscriminators[k])[jetRef];
                 ajet.addBDiscriminatorPair(std::make_pair(discriminatorLabels_[k], value));
             }
         }    
         if (addTagInfos_) {
       for (size_t k=0; k<jetTagInfos.size(); ++k) {
         const edm::View<reco::BaseTagInfo> & taginfos = *jetTagInfos[k];
         // This is not associative, so we have to search the jet
         edm::Ptr<reco::BaseTagInfo> match;
         // Try first by 'same index'
         if ((idx < taginfos.size()) && (taginfos[idx].jet() == jetRef)) {
           match = taginfos.ptrAt(idx);
         } else {
           // otherwise fail back to a simple search
           for (edm::View<reco::BaseTagInfo>::const_iterator itTI = taginfos.begin(), edTI = taginfos.end(); itTI != edTI; ++itTI) {
         if (itTI->jet() == jetRef) { match = taginfos.ptrAt( itTI - taginfos.begin() ); break; }
           }
         }
         if (match.isNonnull()) {
           tagInfosOut->push_back( match->clone() );
           // set the "forward" ptr to the thinned collection
           edm::Ptr<reco::BaseTagInfo> tagInfoForwardPtr ( h_tagInfosOut.id(), &tagInfosOut->back(), tagInfosOut->size() - 1 );
           // set the "backward" ptr to the original collection for association
           edm::Ptr<reco::BaseTagInfo> tagInfoBackPtr ( match );
           // make FwdPtr
           TagInfoFwdPtrCollection::value_type tagInfoFwdPtr( tagInfoForwardPtr, tagInfoBackPtr ) ;
           ajet.addTagInfo(tagInfoLabels_[k], tagInfoFwdPtr );
         }
       }
         }    
     }
     
     if (addAssociatedTracks_) ajet.setAssociatedTracks( (*hTrackAss)[jetRef] );
 
     if (addJetCharge_) ajet.setJetCharge( (*hJetChargeAss)[jetRef] );
 
     // add jet ID for calo jets
     if (addJetID_ && ajet.isCaloJet() ) {
       reco::JetID jetId = (*hJetIDMap)[ jetRef ];
       ajet.setJetID( jetId );
     }
     // add jet ID jpt jets
     else if ( addJetID_ && ajet.isJPTJet() ){
       const reco::JPTJet *jptj = dynamic_cast<const reco::JPTJet *>(jetRef.get());
       reco::JetID jetId = (*hJetIDMap)[ jptj->getCaloJetRef() ];
       ajet.setJetID( jetId );
     } 
     if ( useUserData_ ) {
       userDataHelper_.add( ajet, iEvent, iSetup );
     }
     patJets->push_back(ajet);
   }
 
   // sort jets in pt
   std::sort(patJets->begin(), patJets->end(), pTComparator_);
 
   // put genEvt  in Event
   iEvent.put(patJets);
 
   iEvent.put( genJetsOut, "genJets" );
   iEvent.put( caloTowersOut, "caloTowers" );
   iEvent.put( pfCandidatesOut, "pfCandidates" );
   iEvent.put( tagInfosOut, "tagInfos" );
   
 
 }