/data/refman/pasoursint/CMSSW_5_3_3/src/SimGeneral/TrackingAnalysis/src/MuonPSimHitSelector.cc

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#include "CondFormats/CSCObjects/interface/CSCBadChambers.h"
#include "CondFormats/DataRecord/interface/CSCBadChambersRcd.h"

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

#include "SimDataFormats/CrossingFrame/interface/CrossingFrame.h"
#include "SimDataFormats/CrossingFrame/interface/MixCollection.h"

#include "SimGeneral/TrackingAnalysis/interface/MuonPSimHitSelector.h"

// #include "SimTracker/Common/interface/SimHitSelectorFromDB.h"


void MuonPSimHitSelector::select(PSimHitCollection & selection, edm::Event const & event, edm::EventSetup const & setup) const
{
    // Look for psimhit collection associated to the muon system
    PSimHitCollectionMap::const_iterator pSimHitCollections = pSimHitCollectionMap_.find("muon");

    // Check that there are psimhit collections defined for the tracker
    if (pSimHitCollections == pSimHitCollectionMap_.end()) return;

    // Grab all the PSimHit from the different sencitive volumes
    edm::Handle<CrossingFrame<PSimHit> > cfPSimHits;
    std::vector<const CrossingFrame<PSimHit> *> cfPSimHitProductPointers;

    // Collect the product pointers to the different psimhit collection
    for (std::size_t i = 0; i < pSimHitCollections->second.size(); ++i)
    {
        event.getByLabel("mix", pSimHitCollections->second[i], cfPSimHits);
        cfPSimHitProductPointers.push_back(cfPSimHits.product());
    }

    // Create a mix collection from the different psimhit collections
    std::auto_ptr<MixCollection<PSimHit> > pSimHits(new MixCollection<PSimHit>(cfPSimHitProductPointers));

    // Get CSC Bad Chambers (ME4/2)
    edm::ESHandle<CSCBadChambers> cscBadChambers;
    setup.get<CSCBadChambersRcd>().get(cscBadChambers);

    // Select only psimhits from alive modules
    for (MixCollection<PSimHit>::MixItr pSimHit = pSimHits->begin(); pSimHit != pSimHits->end(); ++pSimHit)
    {
        DetId dId = DetId( pSimHit->detUnitId() );

        if (dId.det() == DetId::Muon && dId.subdetId() == MuonSubdetId::CSC)
        {
            if ( !cscBadChambers->isInBadChamber(CSCDetId(dId)) )
                selection.push_back(*pSimHit);
        }
        else
            selection.push_back(*pSimHit);
    }
}