/data/refman/pasoursint/CMSSW_5_3_4/src/RecoMuon/L3TrackFinder/plugins/MuonRoadTrajectoryBuilderESProducer.cc

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#include "RecoMuon/L3TrackFinder/interface/MuonRoadTrajectoryBuilderESProducer.h"

#include <RecoTracker/MeasurementDet/interface/MeasurementTracker.h>
#include <TrackingTools/GeomPropagators/interface/Propagator.h>
#include "FWCore/Framework/interface/ESHandle.h"

MuonRoadTrajectoryBuilderESProducer::MuonRoadTrajectoryBuilderESProducer(const edm::ParameterSet& iConfig)
{
  std::string myName = iConfig.getParameter<std::string>("ComponentName");
  measurementTrackerName = iConfig.getParameter<std::string>("measurementTrackerName");
  propagatorName = iConfig.getParameter<std::string>("propagatorName");
  pset_ = iConfig;
  setWhatProduced(this,myName);
}

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

}

boost::shared_ptr<TrajectoryBuilder>
MuonRoadTrajectoryBuilderESProducer::produce(const CkfComponentsRecord& iRecord)
{
   using namespace edm::es;

   edm::ESHandle<MeasurementTracker>             measurementTrackerHandle;
   edm::ESHandle<Propagator> propagatorHandle;
   
   iRecord.get(measurementTrackerName,measurementTrackerHandle);
   iRecord.getRecord<TrackingComponentsRecord>().get(propagatorName,propagatorHandle);
   
   _trajectorybuilder = boost::shared_ptr<TrajectoryBuilder>(new  MuonRoadTrajectoryBuilder(pset_,
                                                                                            measurementTrackerHandle.product(),
                                                                                            propagatorHandle->magneticField(),
                                                                                            propagatorHandle.product())
                                                                   );
   return _trajectorybuilder;
}