/data/refman/pasoursint/CMSSW_6_1_2_SLHC2/src/HLTriggerOffline/Higgs/src/HLTHiggsSubAnalysis.cc

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#include "FWCore/ServiceRegistry/interface/Service.h"
#include "FWCore/MessageLogger/interface/MessageLogger.h"

#include "DataFormats/Common/interface/Handle.h"

#include "HLTriggerOffline/Higgs/interface/HLTHiggsSubAnalysis.h"
#include "HLTriggerOffline/Higgs/src/EVTColContainer.cc"
#include "HLTriggerOffline/Higgs/src/MatchStruct.cc"

#include "FWCore/Common/interface/TriggerNames.h"

#include "TPRegexp.h"
#include "TString.h"

#include "DataFormats/Common/interface/TriggerResults.h"
#include "FWCore/Common/interface/TriggerNames.h"

#include "HLTriggerOffline/Higgs/interface/HLTHiggsSubAnalysis.h"
#include "HLTriggerOffline/Higgs/src/MatchStruct.cc"

#include "TPRegexp.h"
#include "TString.h"

#include<set>
#include<algorithm>


HLTHiggsSubAnalysis::HLTHiggsSubAnalysis(const edm::ParameterSet & pset,
                const std::string & analysisname) :
        _pset(pset),
        _analysisname(analysisname),
        _minCandidates(0),
        _hltProcessName(pset.getParameter<std::string>("hltProcessName")),
        _genParticleLabel(pset.getParameter<std::string>("genParticleLabel")),
        _parametersEta(pset.getParameter<std::vector<double> >("parametersEta")),
        _parametersPhi(pset.getParameter<std::vector<double> >("parametersPhi")),
        _parametersTurnOn(pset.getParameter<std::vector<double> >("parametersTurnOn")),
        _recMuonSelector(0),
        _recElecSelector(0),
        _recCaloMETSelector(0),
        _recPFTauSelector(0),
        _recPhotonSelector(0),
        _recTrackSelector(0),
        _dbe(0)
{
        // Specific parameters for this analysis
        edm::ParameterSet anpset = pset.getParameter<edm::ParameterSet>(analysisname);
        // Collections labels (but genparticles already initialized) 
        // initializing _recLabels data member)
        this->bookobjects( anpset );

        // Generic objects: Initialization of cuts
        for(std::map<unsigned int,std::string>::const_iterator it = _recLabels.begin();
                        it != _recLabels.end(); ++it)
        {
                const std::string objStr = EVTColContainer::getTypeString(it->first);
                _genCut[it->first] = pset.getParameter<std::string>( std::string(objStr+"_genCut").c_str() );
                _recCut[it->first] = pset.getParameter<std::string>( std::string(objStr+"_recCut").c_str() );
                _cutMinPt[it->first] = pset.getParameter<double>( std::string(objStr+"_cutMinPt").c_str() );
                _cutMaxEta[it->first] = pset.getParameter<double>( std::string(objStr+"_cutMaxEta").c_str() );
        }

        //--- Updating parameters if has to be modified for this particular specific analysis
        for(std::map<unsigned int,std::string>::const_iterator it = _recLabels.begin();
                        it != _recLabels.end(); ++it)
        {
                const std::string objStr = EVTColContainer::getTypeString(it->first);
                try
                {
                        _genCut[it->first] = anpset.getUntrackedParameter<std::string>( std::string(objStr+"_genCut").c_str() ); 
                }
                catch(edm::Exception)
                {
                }
                try
                {
                        _recCut[it->first] = anpset.getUntrackedParameter<std::string>( std::string(objStr+"_recCut").c_str() );
                }
                catch(edm::Exception)
                {
                }
                try
                {
                        _cutMinPt[it->first] = anpset.getUntrackedParameter<double>( std::string(objStr+"_cutMinPt").c_str() );
                }
                catch(edm::Exception)
                {
                }
                try
                {
                        _cutMaxEta[it->first] = anpset.getUntrackedParameter<double>( std::string(objStr+"_cutMaxEta").c_str() );
                }
                catch(edm::Exception)
                {
                }
        }
        
        _hltPathsToCheck = anpset.getParameter<std::vector<std::string> >("hltPathsToCheck");
        _minCandidates = anpset.getParameter<unsigned int>("minCandidates");

        _dbe = edm::Service<DQMStore>().operator->();
        _dbe->setVerbose(0);
}

HLTHiggsSubAnalysis::~HLTHiggsSubAnalysis()
{
        for(std::map<unsigned int,StringCutObjectSelector<reco::GenParticle>* >::iterator it = _genSelectorMap.begin();
                        it != _genSelectorMap.end(); ++it)
        {
                if( it->second != 0)
                {
                        delete it->second;
                        it->second =0;
                }
        }
        if( _recMuonSelector != 0)
        {
                delete _recMuonSelector;
                _recMuonSelector =0;
        }
        if( _recElecSelector != 0)
        {
                delete _recElecSelector;
                _recElecSelector =0;
        }
        if( _recPhotonSelector != 0)
        {
                delete _recPhotonSelector;
                _recPhotonSelector =0;
        }
        if( _recCaloMETSelector != 0)
        {
                delete _recCaloMETSelector;
                _recCaloMETSelector =0;
        }
        if( _recPFTauSelector != 0)
        {
                delete _recPFTauSelector;
                _recPFTauSelector =0;
        }
        if( _recTrackSelector != 0)
        {
                delete _recTrackSelector;
                _recTrackSelector =0;
        }
}


void HLTHiggsSubAnalysis::beginJob() 
{
}



void HLTHiggsSubAnalysis::beginRun(const edm::Run & iRun, const edm::EventSetup & iSetup)
{
        std::string baseDir = "HLT/Higgs/"+_analysisname+"/";
        _dbe->setCurrentFolder(baseDir);

        // Initialize the confighlt
        bool changedConfig;
        if(!_hltConfig.init(iRun,iSetup,_hltProcessName,changedConfig))
        {
                edm::LogError("HiggsValidations") << "HLTHiggsSubAnalysis::beginRun: "
                        << "Initializtion of HLTConfigProvider failed!!";
        }


        // Parse the input paths to get them if there are in the table 
        // and associate them the last filter of the path (in order to extract the
        _hltPaths.clear();
        for(size_t i = 0; i < _hltPathsToCheck.size(); ++i)
        {
                bool found = false;
                TPRegexp pattern(_hltPathsToCheck[i]);
                for(size_t j = 0 ; j < _hltConfig.triggerNames().size(); ++j)
                {
                        std::string thetriggername = _hltConfig.triggerNames()[j];
                        if(TString(thetriggername).Contains(pattern))
                        {
                                _hltPaths.insert(thetriggername);
                                found = true;
                        }
                }
                if( ! found )
                {
                        edm::LogWarning("HiggsValidations") << "HLTHiggsSubAnalysis::beginRun, In "
                                << _analysisname << " subfolder NOT found the path: '" 
                                << _hltPathsToCheck[i] << "*'" ;
                }
        }

        LogTrace("HiggsValidation") << "SubAnalysis: " << _analysisname 
                << "\nHLT Trigger Paths found >>>"; 
        // Initialize the plotters (analysers for each trigger path)
        _analyzers.clear();
        for(std::set<std::string>::iterator iPath = _hltPaths.begin(); 
                        iPath != _hltPaths.end(); ++iPath) 
        {
                // Avoiding the dependence of the version number for
                // the trigger paths
                std::string path = * iPath;
                std::string shortpath = path;
                if(path.rfind("_v") < path.length())
                {
                        shortpath = path.substr(0, path.rfind("_v"));
                }
                _shortpath2long[shortpath] = path;

                // Objects needed by the HLT path
                const std::vector<unsigned int> objsNeedHLT = this->getObjectsType(shortpath);
                // Sanity check: the object needed by a trigger path should be
                // introduced by the user via config python (_recLabels datamember)
                std::vector<unsigned int> userInstantiate;
                for(std::map<unsigned int,std::string>::iterator it = _recLabels.begin() ; 
                                it != _recLabels.end(); ++it)
                {
                        userInstantiate.push_back(it->first);
                }
                for(std::vector<unsigned int>::const_iterator it = objsNeedHLT.begin(); it != objsNeedHLT.end(); 
                                ++it)
                {
                        if( std::find(userInstantiate.begin(),userInstantiate.end(), *it) == 
                                        userInstantiate.end() )
                        {
                                edm::LogError("HiggsValidation") << "In HLTHiggsSubAnalysis::beginRun, " 
                                        << "Incoherence found in the python configuration file!!\nThe SubAnalysis '" 
                                        << _analysisname << "' has been asked to evaluate the trigger path '"
                                        << shortpath << "' (found it in 'hltPathsToCheck') BUT this path"
                                        << " needs a '" << EVTColContainer::getTypeString(*it) 
                                        << "' which has not been instantiate ('recVariableLabels'" 
                                        << ")" ;
                                exit(-1);
                        }
                }
                LogTrace("HiggsValidation") << " --- " << shortpath;
                
                // the hlt path, the objects (elec,muons,photons,...)
                // needed to evaluate the path are the argumens of the plotter
                HLTHiggsPlotter analyzer(_pset, shortpath,objsNeedHLT, _dbe);
                _analyzers.push_back(analyzer);
        }

        // Call the beginRun (which books all the path dependent histograms)
        for(std::vector<HLTHiggsPlotter>::iterator it = _analyzers.begin(); 
                        it != _analyzers.end(); ++it) 
        {
                it->beginRun(iRun, iSetup);
        }

        // Book the gen/reco analysis-dependent histograms (denominators)
        for(std::map<unsigned int,std::string>::const_iterator it = _recLabels.begin();
                        it != _recLabels.end(); ++it)
        {
                const std::string objStr = EVTColContainer::getTypeString(it->first);
                std::vector<std::string> sources(2);
                sources[0] = "gen";
                sources[1] = "rec";
          
                for(size_t i = 0; i < sources.size(); i++) 
                {
                        std::string source = sources[i];
                        bookHist(source, objStr, "Eta");
                        bookHist(source, objStr, "Phi");
                        bookHist(source, objStr, "MaxPt1");
                        bookHist(source, objStr, "MaxPt2");
                }
        }
}



void HLTHiggsSubAnalysis::analyze(const edm::Event & iEvent, const edm::EventSetup & iSetup, 
                EVTColContainer * cols)
{
        // Initialize the collection (the ones which hasn't been initialiazed yet)
        this->initobjects(iEvent,cols);
        // utility map
        std::map<unsigned int,std::string> u2str;
        u2str[GEN]="gen";
        u2str[RECO]="rec";

        // Extract the match structure containing the gen/reco candidates (electron, muons,...)
        // common to all the SubAnalysis
        //---- Generation
        // Make each good gen object into the base cand for a MatchStruct
        std::vector<MatchStruct> * matches = new std::vector<MatchStruct>;
//      bool alreadyMu = false;
        for(std::map<unsigned int,std::string>::iterator it = _recLabels.begin();
                        it != _recLabels.end(); ++it)
        {
                // Avoiding the TkMu and Mu case
/*              if( alreadyMu )
                {
                        continue;
                }*/
                // Initialize selectors when first event
                if(!_genSelectorMap[it->first]) 
                {
                        _genSelectorMap[it->first] = new StringCutObjectSelector<reco::GenParticle>(_genCut[it->first]);
                }

                for(size_t i = 0; i < cols->genParticles->size(); ++i)
                {
                        if(_genSelectorMap[it->first]->operator()(cols->genParticles->at(i)))
                        {
                                matches->push_back(MatchStruct(&cols->genParticles->at(i),it->first));
                        }
                }
/*              if( it->first == EVTColContainer::MUON || it->first == EVTColContainer::TRACK )
                {
                        alreadyMu = true;
                }*/
        }
        // Sort the MatchStructs by pT for later filling of turn-on curve
        std::sort(matches->begin(), matches->end(), matchesByDescendingPt());
        
        // Map to reference the source (gen/reco) with the recoCandidates
        std::map<unsigned int,std::vector<MatchStruct> > sourceMatchMap;  // To be a pointer to delete
        // --- Storing the generating candidates
        sourceMatchMap[GEN] = *matches;
        
        // Reuse the vector
        matches->clear();
        // --- same for RECO objects
        // Extraction of the objects candidates 
        for(std::map<unsigned int,std::string>::iterator it = _recLabels.begin();
                        it != _recLabels.end(); ++it)
        {
                // Reco selectors (the function takes into account if it was instantiated 
                // before or not
                this->InitSelector(it->first);
                // -- Storing the matches 
                this->insertcandidates(it->first,cols,matches);
        }
        // Sort the MatchStructs by pT for later filling of turn-on curve
        std::sort(matches->begin(), matches->end(), matchesByDescendingPt());
        // --- Storing the reco candidates
        sourceMatchMap[RECO] = *matches;
        // --- All the objects are in place
        delete matches;  
        
        // -- Trigger Results
        const edm::TriggerNames trigNames = iEvent.triggerNames(*(cols->triggerResults));

        // Filling the histograms if pass the minimum amount of candidates needed by the analysis:
        // GEN + RECO CASE in the same loop
        for(std::map<unsigned int,std::vector<MatchStruct> >::iterator it = sourceMatchMap.begin(); 
                        it != sourceMatchMap.end(); ++it)
        {
                // it->first: gen/reco   it->second: matches (std::vector<MatchStruc>)
                if( it->second.size() < _minCandidates )   // FIXME: A bug is potentially here: what about the mixed channels?
                {
                        continue;
                }
                
                // Filling the gen/reco objects (eff-denominators): 
                // Just the first two different ones, if there are more
                std::map<unsigned int,int> * countobjects = new std::map<unsigned int,int>;
                // Initializing the count of the used object
                for(std::map<unsigned int,std::string>::iterator co = _recLabels.begin();
                                co != _recLabels.end(); ++co)
                {
                        countobjects->insert(std::pair<unsigned int,int>(co->first,0));
                }
                int counttotal = 0;
                const int totalobjectssize2 = 2*countobjects->size();
                for(size_t j = 0; j < it->second.size(); ++j)
                {
                        const unsigned int objType = it->second[j].objType;
                        const std::string objTypeStr = EVTColContainer::getTypeString(objType);

                        float pt  = (it->second)[j].pt; 
                        float eta = (it->second)[j].eta;
                        float phi = (it->second)[j].phi;
                        
                        this->fillHist(u2str[it->first],objTypeStr,"Eta",eta);
                        this->fillHist(u2str[it->first],objTypeStr,"Phi",phi);
                        if( (*countobjects)[objType] == 0 )
                        {
                                this->fillHist(u2str[it->first],objTypeStr,"MaxPt1",pt);
                                // Filled the high pt ...
                                ++((*countobjects)[objType]);
                                ++counttotal;
                        }
                        else if( (*countobjects)[objType] == 1  )
                        {
                                this->fillHist(u2str[it->first],objTypeStr,"MaxPt2",pt);
                                // Filled the second high pt ...
                                ++((*countobjects)[objType]);
                                ++counttotal;
                        }
                        else
                        {
                                // Already the minimum two objects has been filled, get out...
                                if( counttotal == totalobjectssize2 )
                                {
                                        break;
                                }
                        }                               
                }
                delete countobjects;
        
                // Calling to the plotters analysis (where the evaluation of the different trigger paths are done)
                const std::string source = u2str[it->first];
                for(std::vector<HLTHiggsPlotter>::iterator an = _analyzers.begin();
                                an != _analyzers.end(); ++an)
                {
                        const std::string hltPath = _shortpath2long[an->gethltpath()];
                        const bool ispassTrigger =  cols->triggerResults->accept(trigNames.triggerIndex(hltPath));
                        an->analyze(ispassTrigger,source,it->second);
                }
        }
}

// Return the objects (muons,electrons,photons,...) needed by a hlt path. 
const std::vector<unsigned int> HLTHiggsSubAnalysis::getObjectsType(const std::string & hltPath) const
{
        static const unsigned int objSize = 5; //6;
        static const unsigned int objtriggernames[] = { EVTColContainer::MUON, 
                EVTColContainer::ELEC, 
                EVTColContainer::PHOTON,
//              EVTColContainer::TRACK,  // Note is tracker muon
                EVTColContainer::PFTAU,
                EVTColContainer::CALOMET
        };

        std::set<unsigned int> objsType;
        // The object to deal has to be entered via the config .py
        for(unsigned int i = 0; i < objSize; ++i)
        {
                std::string objTypeStr = EVTColContainer::getTypeString( objtriggernames[i] );
                // Check if it is needed this object for this trigger
                if( ! TString(hltPath).Contains(objTypeStr) )
                {
                        continue;
                }

                objsType.insert(objtriggernames[i]);
        }

        return std::vector<unsigned int>(objsType.begin(),objsType.end());
}


// Booking the maps: recLabels and genParticle selectors
void HLTHiggsSubAnalysis::bookobjects( const edm::ParameterSet & anpset )
{
        if( anpset.exists("recMuonLabel") )
        {
                _recLabels[EVTColContainer::MUON] = anpset.getParameter<std::string>("recMuonLabel");
                _genSelectorMap[EVTColContainer::MUON] = 0 ;
        }
        if( anpset.exists("recElecLabel") )
        {
                _recLabels[EVTColContainer::ELEC] = anpset.getParameter<std::string>("recElecLabel");
                _genSelectorMap[EVTColContainer::ELEC] = 0 ;
        }
        if( anpset.exists("recPhotonLabel") )
        {
                _recLabels[EVTColContainer::PHOTON] = anpset.getParameter<std::string>("recPhotonLabel");
                _genSelectorMap[EVTColContainer::PHOTON] = 0 ;
        }
        if( anpset.exists("recCaloMETLabel") )
        {
                _recLabels[EVTColContainer::CALOMET] = anpset.getParameter<std::string>("recCaloMETLabel");
                _genSelectorMap[EVTColContainer::CALOMET] = 0 ;
        }
        if( anpset.exists("recPFTauLabel") )
        {
                _recLabels[EVTColContainer::PFTAU] = anpset.getParameter<std::string>("recPFTauLabel");
                _genSelectorMap[EVTColContainer::PFTAU] = 0 ;
        }
        /*if( anpset.exists("recTrackLabel") )
        {
                _recLabels[EVTColContainer::TRACK] = anpset.getParameter<std::string>("recTrackLabel");
                _genSelectorMap[EVTColContainer::TRACK] = 0 ;
        }*/

        if( _recLabels.size() < 1 )
        {
                edm::LogError("HiggsValidation") << "HLTHiggsSubAnalysis::bookobjects, " 
                << "Not included any object (recMuonLabel, recElecLabel, ...)  "
                << "in the analysis " << _analysisname;
                return;
        }
}

void HLTHiggsSubAnalysis::initobjects(const edm::Event & iEvent, EVTColContainer * col)
{
        /*if( col != 0 && col->isAllInit() )
        {
                // Already init, not needed to do nothing
                return;
        }*/
        if( ! col->isCommonInit() )
        {
                // TO BE DEPRECATED AS we don't need it anymore.
                // There is no match with HLT candidates... Use, then TriggerResults
                /*edm::Handle<trigger::TriggerEventWithRefs> rawTEH;
                iEvent.getByLabel("hltTriggerSummaryRAW",rawTEH);
                if(rawTEH.failedToGet())
                {
                        edm::LogError("HiggsValidation") << "HLTHiggsSubAnalysis::initobjecst, "
                                << "No trigger summary found"; 
                        return;
                }
                col->rawTriggerEvent = rawTEH.product();*/
                // END-- TO BE DEPRECATED
        
                // extract the trigger results (path info, pass,...)
                edm::Handle<edm::TriggerResults> trigResults;
                edm::InputTag trigResultsTag("TriggerResults","",_hltProcessName);
                iEvent.getByLabel(trigResultsTag,trigResults);
                if( trigResults.isValid() )
                {
                        col->triggerResults = trigResults.product();
                }

                // GenParticle collection if is there
                edm::Handle<reco::GenParticleCollection> genPart;
                iEvent.getByLabel(_genParticleLabel,genPart);
                if( genPart.isValid() )
                {
                        col->genParticles = genPart.product();
                }
        }
                
        for(std::map<unsigned int,std::string>::iterator it = _recLabels.begin(); 
                        it != _recLabels.end(); ++it)
        {
                if( it->first == EVTColContainer::MUON )
                {
                        edm::Handle<reco::MuonCollection> theHandle;
                        iEvent.getByLabel(it->second, theHandle);
                        col->set(theHandle.product());
                }
                else if( it->first == EVTColContainer::ELEC )
                {
                        edm::Handle<reco::GsfElectronCollection> theHandle;
                        iEvent.getByLabel(it->second, theHandle);
                        col->set(theHandle.product());
                }
                else if( it->first == EVTColContainer::PHOTON )
                {
                        edm::Handle<reco::PhotonCollection> theHandle;
                        iEvent.getByLabel(it->second, theHandle);
                        col->set(theHandle.product());
                }
                else if( it->first == EVTColContainer::CALOMET )
                {
                        edm::Handle<reco::CaloMETCollection> theHandle;
                        iEvent.getByLabel(it->second, theHandle);
                        col->set(theHandle.product());
                }
                else if( it->first == EVTColContainer::PFTAU )
                {
                        edm::Handle<reco::PFTauCollection> theHandle;
                        iEvent.getByLabel(it->second, theHandle);
                        col->set(theHandle.product());
                }
/*              else if( it->first == EVTColContainer::TRACK )
                {
                        edm::Handle<reco::TrackCollection> theHandle;
                        iEvent.getByLabel(it->second, theHandle);
                        col->set(theHandle.product());
                }*/
                else
                {
                        edm::LogError("HiggsValidation") << "HLTHiggsSubAnalysis::initobjects " 
                                << " NOT IMPLEMENTED (yet) ERROR: '" << it->second << "'";
                        //return; ??
                }
        }
}

void HLTHiggsSubAnalysis::bookHist(const std::string & source, 
                const std::string & objType, const std::string & variable)
{
        std::string sourceUpper = source; 
        sourceUpper[0] = std::toupper(sourceUpper[0]);
        std::string name = source + objType + variable ;
        TH1F * h = 0;

        if(variable.find("MaxPt") != std::string::npos) 
        {
                std::string desc = (variable == "MaxPt1") ? "Leading" : "Next-to-Leading";
                std::string title = "pT of " + desc + " " + sourceUpper + " " + objType;
                const size_t nBins = _parametersTurnOn.size() - 1;
                float * edges = new float[nBins + 1];
                for(size_t i = 0; i < nBins + 1; i++)
                {
                        edges[i] = _parametersTurnOn[i];
                }
                h = new TH1F(name.c_str(), title.c_str(), nBins, edges);
                delete edges;
        }
        else 
        {
                std::string symbol = (variable == "Eta") ? "#eta" : "#phi";
                std::string title  = symbol + " of " + sourceUpper + " " + objType;
                std::vector<double> params = (variable == "Eta") ? _parametersEta : _parametersPhi;

                int    nBins = (int)params[0];
                double min   = params[1];
                double max   = params[2];
                h = new TH1F(name.c_str(), title.c_str(), nBins, min, max);
        }
        h->Sumw2();
        _elements[name] = _dbe->book1D(name, h);
        delete h;
}

void HLTHiggsSubAnalysis::fillHist(const std::string & source, 
                const std::string & objType, const std::string & variable, const float & value )
{
        std::string sourceUpper = source; 
        sourceUpper[0] = toupper(sourceUpper[0]);
        std::string name = source + objType + variable ;

        _elements[name]->Fill(value);
}



// Initialize the selectors
void HLTHiggsSubAnalysis::InitSelector(const unsigned int & objtype)
{       
        if( objtype == EVTColContainer::MUON && _recMuonSelector == 0 )
        {
                _recMuonSelector = new StringCutObjectSelector<reco::Muon>(_recCut[objtype]);
        }
        else if( objtype == EVTColContainer::ELEC && _recElecSelector == 0)
        {
                _recElecSelector = new StringCutObjectSelector<reco::GsfElectron>(_recCut[objtype]);
        }
        else if( objtype == EVTColContainer::PHOTON && _recPhotonSelector == 0)
        {
                _recPhotonSelector = new StringCutObjectSelector<reco::Photon>(_recCut[objtype]);
        }
        else if( objtype == EVTColContainer::CALOMET && _recCaloMETSelector == 0)
        {
                _recCaloMETSelector = new StringCutObjectSelector<reco::CaloMET>(_recCut[objtype]);
        }
        else if( objtype == EVTColContainer::PFTAU && _recPFTauSelector == 0 )
        {
                _recPFTauSelector = new StringCutObjectSelector<reco::PFTau>(_recCut[objtype]);
        }
        /*else if( objtype == EVTColContainer::TRACK && _recTrackSelector == 0)
        {
                _recTrackSelector = new StringCutObjectSelector<reco::Track>(_recCut[objtype]);
        }*/
/*      else
        {
FIXME: ERROR NO IMPLEMENTADO
        }*/
}

void HLTHiggsSubAnalysis::insertcandidates(const unsigned int & objType, const EVTColContainer * cols, 
                std::vector<MatchStruct> * matches)
{
        if( objType == EVTColContainer::MUON )
        {
                for(size_t i = 0; i < cols->muons->size(); i++)
                {
                        if(_recMuonSelector->operator()(cols->muons->at(i)))
                        {
                                matches->push_back(MatchStruct(&cols->muons->at(i),objType));
                        }
                }
        }
        else if( objType == EVTColContainer::ELEC )
        {
                for(size_t i = 0; i < cols->electrons->size(); i++)
                {
                        if(_recElecSelector->operator()(cols->electrons->at(i)))
                        {
                                matches->push_back(MatchStruct(&cols->electrons->at(i),objType));
                        }
                }
        }
        else if( objType == EVTColContainer::PHOTON )
        {
                for(size_t i = 0; i < cols->photons->size(); i++)
                {
                        if(_recPhotonSelector->operator()(cols->photons->at(i)))
                        {
                                matches->push_back(MatchStruct(&cols->photons->at(i),objType));
                        }
                }
        }
        else if( objType == EVTColContainer::CALOMET )
        {
                for(size_t i = 0; i < cols->caloMETs->size(); i++)
                {
                        if(_recCaloMETSelector->operator()(cols->caloMETs->at(i)))
                        {
                                matches->push_back(MatchStruct(&cols->caloMETs->at(i),objType));
                        }
                }
        }
        else if( objType == EVTColContainer::PFTAU )
        {
                for(size_t i = 0; i < cols->pfTaus->size(); i++)
                {
                        if(_recPFTauSelector->operator()(cols->pfTaus->at(i)))
                        {
                                matches->push_back(MatchStruct(&cols->pfTaus->at(i),objType));
                        }
                }
        }
        /*else if( objType == EVTColContainer::TRACK )
        {
                for(size_t i = 0; i < cols->tracks->size(); i++)
                {
                        if(_recTrackSelector->operator()(cols->tracks->at(i)))
                        {
                                matches->push_back(MatchStruct(&cols->tracks->at(i),objType));
                        }
                }
        }*/
        /*
        else FIXME: Control errores
        {
        }
        */
}