JetExternalAssocTool.h

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/*
  Copyright (C) 2002-2025 CERN for the benefit of the ATLAS collaboration
*/
 
// JetExternalAssocTool.h
 
#ifndef DerivationFramework_JetExternalAssocTool_H
#define DerivationFramework_JetExternalAssocTool_H
 
 
#include "AthenaBaseComps/AthAlgTool.h"
#include "DerivationFrameworkInterfaces/IAugmentationTool.h"
#include "StoreGate/WriteDecorHandleKeyArray.h"
#include "StoreGate/ReadHandleKey.h"
#include "xAODJet/JetContainer.h"
 
 
#include <vector>
#include <string>
 
namespace DerivationFramework{
 
  class JetExternalAssocTool : public extends<AthAlgTool, IAugmentationTool> {
 
  public:
    JetExternalAssocTool(const std::string& t, const std::string& n, const IInterface* p);
 
    virtual StatusCode initialize() override final;
    virtual StatusCode addBranches(const EventContext& ctx) const override final;
 
  private:
    StatusCode TransferLink(const xAOD::Jet& jet, const xAOD::Jet& jet_external, const EventContext& ctx) const;
 
    SG::ReadHandleKey<xAOD::JetContainer> m_containerName{this, "InputJets", ""};
    SG::ReadHandleKey<xAOD::JetContainer> m_ExternalJetCollectionName{this, "ExternalJetCollectionName", ""};
    Gaudi::Property<std::string> m_momentPrefix{this, "MomentPrefix", ""};
    Gaudi::Property<std::vector<std::string>> m_VectorOfOldLinkNames{this, "ListOfOldLinkNames", {}};
    Gaudi::Property<std::vector<std::string>> m_VectorOfNewLinkNames{this, "ListOfNewLinkNames", {}};
    SG::WriteDecorHandleKeyArray<xAOD::JetContainer> m_dec_keys{this, "DecKeys", {}, "SG keys for external decorations"};
 
    Gaudi::Property<bool> m_dRMatch{this, "DeltaRMatch", false};
    Gaudi::Property<double> m_dRCut{this, "DeltaRCut", 0.01};
 
    typedef ElementLink<xAOD::IParticleContainer>            type_el;
    typedef std::vector<type_el>                             type_ghostlink;
  };
 
}
#endif