/afs/cern.ch/work/a/aaltunda/public/www/CMSSW_6_2_5/src/RecoTracker/CkfPattern/interface/CkfTrajectoryBuilder.h

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#ifndef CkfTrajectoryBuilder_H
#define CkfTrajectoryBuilder_H

#include <vector>

class Propagator;
class TrajectoryStateUpdator;
class MeasurementEstimator;
class TrajectorySeed;
class TrajectoryStateOnSurface;
class TrajectoryFilter;

#include "FWCore/Framework/interface/ESHandle.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "FWCore/Framework/interface/EventSetup.h"
#include "FWCore/Framework/interface/Event.h"

#include "DataFormats/TrajectorySeed/interface/TrajectorySeed.h"
#include "DataFormats/TrajectorySeed/interface/TrajectorySeedCollection.h"
#include "DataFormats/TrackCandidate/interface/TrackCandidateCollection.h"

#include "RecoTracker/CkfPattern/interface/BaseCkfTrajectoryBuilder.h"

#include "TrackingTools/PatternTools/interface/Trajectory.h"
#include "TrackingTools/PatternTools/interface/TempTrajectory.h"
#include "TrackingTools/PatternTools/interface/TrajectoryMeasurement.h"

#include <map>
#include <boost/unordered_map.hpp>

class TransientTrackingRecHitBuilder;
class TrajectoryFilter;

class CkfTrajectoryBuilder :public BaseCkfTrajectoryBuilder {

public:

  typedef std::vector<Trajectory>         TrajectoryContainer;
  typedef std::vector<TempTrajectory>     TempTrajectoryContainer;

  CkfTrajectoryBuilder(const edm::ParameterSet&              conf,
                       const TrajectoryStateUpdator*         updator,
                       const Propagator*                     propagatorAlong,
                       const Propagator*                     propagatorOpposite,
                       const Chi2MeasurementEstimatorBase*   estimator,
                       const TransientTrackingRecHitBuilder* recHitBuilder,
                       const MeasurementTracker*             measurementTracker,
                       const TrajectoryFilter*               filter);

  ~CkfTrajectoryBuilder() {}
  
  virtual TrajectoryContainer trajectories(const TrajectorySeed& seed) const;
  virtual void trajectories(const TrajectorySeed& seed, TrajectoryContainer &ret) const;

  // new interface returning the start Trajectory...
  TempTrajectory buildTrajectories (const TrajectorySeed&,
                                    TrajectoryContainer &ret,
                                    const TrajectoryFilter*) const;
  
  
  void  rebuildTrajectories(TempTrajectory const& startingTraj, const TrajectorySeed&,
                            TrajectoryContainer& result) const {}

  //  virtual void setEvent(const edm::Event& event) const;



 protected:
  int theMaxCand;               
  float theLostHitPenalty;      
  bool theIntermediateCleaning; 
  bool theAlwaysUseInvalidHits;


 protected:
  virtual void findCompatibleMeasurements(const TrajectorySeed&seed, const TempTrajectory& traj, std::vector<TrajectoryMeasurement> & result) const;

  void limitedCandidates(const TrajectorySeed&seed, TempTrajectory& startingTraj, TrajectoryContainer& result) const;
  void limitedCandidates(const boost::shared_ptr<const TrajectorySeed> & sharedSeed, TempTrajectoryContainer &candidates, TrajectoryContainer& result) const;
  
  void updateTrajectory( TempTrajectory& traj, const TM& tm) const;

  /*  
      //not mature for integration.  
      bool theSharedSeedCheck;
      std::string theUniqueName;
      void rememberSeedAndTrajectories(const TrajectorySeed& seed,TrajectoryContainer &result) const;
      bool seedAlreadyUsed(const TrajectorySeed& seed,TempTrajectoryContainer &candidates) const;
      bool sharedSeed(const TrajectorySeed& seed1,const TrajectorySeed& seed2) const;
      //  mutable TempTrajectoryContainer theCachedTrajectories;
      typedef boost::unordered_multimap<uint32_t,TempTrajectory> SharedTrajectory;
      mutable SharedTrajectory theCachedTrajectories;
  */
};

#endif