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#ifndef Alignment_KalmanAlignmentAlgorithm_KalmanAlignmentUpdator_h
#define Alignment_KalmanAlignmentAlgorithm_KalmanAlignmentUpdator_h

#include "Alignment/CommonAlignment/interface/AlignableNavigator.h"
#include "Alignment/CommonAlignmentAlgorithm/interface/AlignmentParameterStore.h"
#include "Alignment/ReferenceTrajectories/interface/TrajectoryFactoryBase.h"
#include "Alignment/KalmanAlignmentAlgorithm/interface/KalmanAlignmentMetricsUpdator.h"

#include "DataFormats/BeamSpot/interface/BeamSpot.h"


class MagneticField;

class KalmanAlignmentUpdator
{

public:

  typedef ReferenceTrajectoryBase::ReferenceTrajectoryPtr ReferenceTrajectoryPtr;

  KalmanAlignmentUpdator( const edm::ParameterSet & config ) {}
  virtual ~KalmanAlignmentUpdator( void ) {}

  virtual void process( const ReferenceTrajectoryPtr & trajectory,
                        AlignmentParameterStore* store,
                        AlignableNavigator* navigator,
                        KalmanAlignmentMetricsUpdator* metrics,
                        const MagneticField* magField = 0 ) = 0;

  virtual KalmanAlignmentUpdator* clone( void ) const = 0;

protected:

  void updateUserVariables( const std::vector< Alignable* > & alignables ) const;

  virtual const std::vector< Alignable* >
  alignablesFromAlignableDets( std::vector< AlignableDetOrUnitPtr >& alignableDets,
                               AlignmentParameterStore* store ) const;

  unsigned int nDifferentAlignables( const std::vector<Alignable*>& ali ) const;

};


#endif