TruthClassDecoratorAlg.h

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/*
  Copyright (C) 2002-2024 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef INDETPHYSVALMONITORING_TruthClassDecoratorAlg_H
#define INDETPHYSVALMONITORING_TruthClassDecoratorAlg_H
 
// STL includes
#include <string>
#include "xAODTruth/TruthParticleContainer.h"
#include "AthenaBaseComps/AthReentrantAlgorithm.h"
#include "GaudiKernel/ToolHandle.h"
#include "GaudiKernel/EventContext.h"
#include "StoreGate/WriteDecorHandleKey.h"
#include "StoreGate/WriteDecorHandle.h"
#include "StoreGate/ReadHandleKey.h"
#include "MCTruthClassifier/IMCTruthClassifier.h"
#include "TrkTruthTrackInterfaces/IAthSelectionTool.h"
 
// class to decorate xAOD::TruthParticles with type and origin, required by validation
class TruthClassDecoratorAlg: public AthReentrantAlgorithm {
public:
  TruthClassDecoratorAlg(const std::string& name, ISvcLocator* pSvcLocator);
  virtual ~TruthClassDecoratorAlg () {/*nop*/
  };
  virtual StatusCode initialize() override;
  virtual StatusCode finalize() override;
 
  virtual StatusCode execute(const EventContext &ctx) const override;
 
private:
  bool decorateTruth(const xAOD::TruthParticle& particle,
                     std::vector< SG::WriteDecorHandle<xAOD::TruthParticleContainer,int> > &int_decor) const;
 
  PublicToolHandle<IMCTruthClassifier>        m_truthClassifier
     {this,"MCTruthClassifier","MCTruthClassifier/MCTruthClassifier",""};
  PublicToolHandle<IAthSelectionTool>         m_truthSelectionTool
     {this,"TruthSelectionTool","",""};

  SG::ReadHandleKey<xAOD::TruthParticleContainer> m_truthParticleName
    {this, "TruthParticleContainerName",  "TruthParticles", ""};
  
  Gaudi::Property<std::string> m_prefix
    {this, "Prefix", "", "Decoration prefix to avoid clashes."};
 
  enum EDecorators {
    kDecorTruthType,
    kDecorTruthOrigin,
    kNDecorators
  };
  std::vector<SG::WriteDecorHandleKey<xAOD::TruthParticleContainer> >   m_decor;
};
 
 
#endif