TVAAugmentationTool.cxx

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/*
 * Copyright (C) 2002-2020 CERN for the benefit of the ATLAS collaboration
 */
 
#include "TVAAugmentationTool.h"
#include "xAODTracking/TrackParticleContainer.h"
#include "StoreGate/WriteDecorHandle.h"
 
namespace DerivationFramework {
 
  TVAAugmentationTool::TVAAugmentationTool(
      const std::string& t,
      const std::string& n,
      const IInterface* p):
    base_class(t, n, p)
  {
    declareProperty("LinkName", m_linkName, "The name of the output links");
    declareProperty("TrackName", m_trackName="InDetTrackParticles");
    declareProperty("VertexName", m_vertexName="PrimaryVertices");
    declareProperty("TVATool", m_tool);
  }
 
  StatusCode TVAAugmentationTool::initialize()
  {
    ATH_MSG_INFO("Initialising TVAAugmentationTool " << name() );
    ATH_CHECK( m_tool.retrieve() );
 
    m_vtxDec_key = m_trackName + "." + m_linkName;
    ATH_CHECK(m_vtxDec_key.initialize());
 
    return StatusCode::SUCCESS;
  }
 
  StatusCode TVAAugmentationTool::addBranches() const
  {
 
    SG::WriteDecorHandle<xAOD::TrackParticleContainer, vtxLink_t> vtxDec_handle(m_vtxDec_key);
 
    const xAOD::VertexContainer* vertices = nullptr;
    ATH_CHECK(evtStore()->retrieve(vertices, m_vertexName) );
    const xAOD::TrackParticleContainer* tracks = nullptr;
    ATH_CHECK(evtStore()->retrieve(tracks, m_trackName) );
 
    xAOD::TrackVertexAssociationMap matchMap = m_tool->getMatchMap(*tracks, *vertices);
 
    for (const xAOD::Vertex* ivtx : *vertices)
      for (const xAOD::TrackParticle* itrk : matchMap[ivtx])
        vtxDec_handle(*itrk).toContainedElement(*vertices, ivtx);
 
    return StatusCode::SUCCESS;
  }
} //> end namespace DerivationFramework