TauTruthMatchingWrapper.cxx

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/*
  Copyright (C) 2002-2023 CERN for the benefit of the ATLAS collaboration
*/
 
// TauTruthMatchingWrapper.cxx
// Author: Evelina Bouhova-Thacker (e.bouhova@cern.ch)
 
#include "DerivationFrameworkTau/TauTruthMatchingWrapper.h"
#include "xAODTracking/Vertex.h"
#include "TauAnalysisTools/ITauTruthMatchingTool.h"
#include "xAODTau/TauJetContainer.h"
#include "StoreGate/ReadHandle.h"
 
namespace DerivationFramework {
 
  TauTruthMatchingWrapper::TauTruthMatchingWrapper(const std::string& t, const std::string& n, const IInterface* p) : 
    AthAlgTool(t,n,p),
    m_tauKey("TauJets"),
    m_tTauTruthMatchingTool("TauAnalysisTools::TauTruthMatchingTool")
  {
    declareInterface<DerivationFramework::IAugmentationTool>(this);
    declareProperty("TauContainerName", m_tauKey);
    declareProperty("TauTruthMatchingTool", m_tTauTruthMatchingTool);
  }
 
  StatusCode TauTruthMatchingWrapper::initialize()
  {
    ATH_CHECK(m_tauKey.initialize());
    CHECK( m_tTauTruthMatchingTool.retrieve() );
    return StatusCode::SUCCESS;
  }
 
  StatusCode TauTruthMatchingWrapper::finalize()
  {
    return StatusCode::SUCCESS;
  }
 
  StatusCode TauTruthMatchingWrapper::addBranches() const
  {
    // Event context
    const EventContext& ctx = Gaudi::Hive::currentContext();
 
    // Read handle
    SG::ReadHandle<xAOD::TauJetContainer> xTauContainer(m_tauKey,ctx);
    if (!xTauContainer.isValid()) {
        ATH_MSG_ERROR("Couldn't retrieve TauJetContainer with name " << m_tauKey);
        return StatusCode::FAILURE;
    }
 
    // Loop over taus
    std::unique_ptr<TauAnalysisTools::ITauTruthMatchingTool::ITruthTausEvent>
      truthTausEvent = m_tTauTruthMatchingTool->getEvent();
    for(auto xTau : *xTauContainer)
      m_tTauTruthMatchingTool->getTruth(*xTau, *truthTausEvent);
    
    return StatusCode::SUCCESS;
  }  
}