ParameterErrDecoratorAlg.h

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/*
  Copyright (C) 2002-2022 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef INDETPHYSVALMONITORING_ParameterErrDecoratorAlg_H
#define INDETPHYSVALMONITORING_ParameterErrDecoratorAlg_H

 
#include "xAODTracking/TrackParticleContainer.h"
#include "AthenaBaseComps/AthReentrantAlgorithm.h"
#include <string>
#include <vector>
#include "StoreGate/WriteDecorHandleKey.h"
#include "StoreGate/WriteDecorHandle.h"
#include "GaudiKernel/EventContext.h"
#include "safeDecorator.h"
 
// class to decorate xAOD::TrackParticles with errors on the defining parameters
class ParameterErrDecoratorAlg: public AthReentrantAlgorithm {
public:
  ParameterErrDecoratorAlg(const std::string& name, ISvcLocator* pSvcLocator);
  virtual
  ~ParameterErrDecoratorAlg();
  virtual StatusCode initialize();
  virtual StatusCode finalize();
  virtual StatusCode execute(const EventContext &ctx) const;
private:
  virtual bool decorateTrack(const xAOD::TrackParticle& particle,
                             std::vector<IDPVM::OptionalDecoration<xAOD::TrackParticleContainer, float> > &floatDecoration) const;
 
  Gaudi::Property<std::string> m_prefix
    {this, "Prefix", "", "Decoration prefix to avoid clashes."};
 
  // need tracks particle key, to compose decoration keys
  SG::ReadHandleKey<xAOD::TrackParticleContainer>  m_trkParticleKey
    {this,"TrackParticleContainerName", "InDetTrackParticles",""};
 
  enum EDecorations {
    kDecorD0err,
    kDecorZ0err,
    kDecorPhierr,
    kDecorThetaerr,
    kDecorQoperr,
    kNDecorators
  };
 
  std::vector< std::pair<SG::WriteDecorHandleKey<xAOD::TrackParticleContainer>,SG::AuxElement::ConstAccessor<float> > > m_decor;
 
};
 
#endif