/data/refman/pasoursint/CMSSW_5_3_0/src/PhysicsTools/IsolationAlgos/interface/CalIsolationExtrapolate.h

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#ifndef IsolationAlgos_CalIsolationAlgo_h
#define IsolationAlgos_CalIsolationAlgo_h
/* Partial spacialization of parameter set adapeter helper
 *
 */
#include "PhysicsTools/IsolationAlgos/interface/CalIsolationAlgo.h"
#include "CommonTools/UtilAlgos/interface/ParameterAdapter.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "FWCore/Framework/interface/EventSetup.h"
#include "FWCore/Framework/interface/ESHandle.h"


namespace helper {

  template<typename Alg>
  struct BFieldIsolationAlgorithmSetup {
    static void init( Alg & algo, const edm::EventSetup& es ) {
      edm::ESHandle<MagneticField> bFieldHandle;
      es.template get<IdealMagneticFieldRecord>().get( bFieldHandle );
      algo.setBfield( bFieldHandle.product() );
    }
  };

  template<typename T1, typename C2>
  struct IsolationAlgorithmSetup<CalIsolationAlgo<T1, C2> > {
    typedef BFieldIsolationAlgorithmSetup<CalIsolationAlgo<T1, C2> >
      type;
  };
}


namespace reco {
  namespace modules {
    
    template<typename T, typename C> 
    struct ParameterAdapter<CalIsolationAlgo<T, C> > { 
      static CalIsolationAlgo<T, C> make( const edm::ParameterSet & cfg ) {
          bool propagate = cfg.template getParameter<bool>( "PropagateToCal" );
          double r=0.0, minz=0.0, maxz=0.0;
          bool   material = false;
          //allow for undefined propagation-parameters, if no propagation is wanted
          if ( propagate ) {
            r        = cfg.template getParameter<double>( "CalRadius" );
            minz     = cfg.template getParameter<double>( "CalMinZ" );
            maxz     = cfg.template getParameter<double>( "CalMaxZ" );
            material = cfg.template getParameter<bool>( "IgnoreMaterial" );
          }  
          return CalIsolationAlgo<T, C>( cfg.template getParameter<double>( "dRMin" ), 
                                         cfg.template getParameter<double>( "dRMax" ),
                                         propagate, r, minz, maxz, material );
      }
    };
  }
}

#endif