TruthLinkRepointTool.h

Go to the documentation of this file.

/*
  Copyright (C) 2002-2025 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef DERIVATIONFRAMEWORK_TruthLinkRepointTool_H
#define DERIVATIONFRAMEWORK_TruthLinkRepointTool_H
 
// Interface classes
#include "AthenaBaseComps/AthAlgTool.h"
#include "DerivationFrameworkInterfaces/IAugmentationTool.h"
 
// Types for functions. Note these are typedefs, so can't forward reference.
#include "xAODTruth/TruthParticleContainer.h"
#include "StoreGate/ReadHandleKey.h"
#include "StoreGate/WriteDecorHandleKeyArray.h"
 
// STL includes
#include <string>
#include <vector>
 
namespace DerivationFramework {
 
  class TruthLinkRepointTool : public extends<AthAlgTool, IAugmentationTool> {
  public:
 
    using base_class::base_class;
 
    virtual StatusCode initialize() override final;
    virtual StatusCode addBranches(const EventContext& ctx) const override final;
 
  private:
    SG::ReadHandleKey<xAOD::IParticleContainer> m_recoKey{this,"RecoCollection", "Muons",
        "Name of reco collection for decoration"};

    SG::WriteDecorHandleKey<xAOD::IParticleContainer> m_decorKey{this, "OutputDecoration", m_recoKey, "TruthLink", "Name of the output decoration on the reco object"};
    SG::ReadHandleKeyArray<xAOD::TruthParticleContainer> m_targetKeys{this, "TargetCollections", {"TruthMuons","TruthPhotons","TruthElectrons"}, "Name of target truth collections"};
 
    // Helper function for finding matching truth particle and warning consistently
    static int find_match(const xAOD::TruthParticle* p, const xAOD::TruthParticleContainer* c) ;
  };
}
 
#endif // DERIVATIONFRAMEWORK_TruthLinkRepointTool_H