DerivationFramework::TrackParametersAtPV Class Reference

the code used in this implementation is kindly stolen from: atlasoff:: ISF/ISF_Core/ISF_Tools More...

#include <TrackParametersAtPV.h>

Inheritance diagram for DerivationFramework::TrackParametersAtPV:

Collaboration diagram for DerivationFramework::TrackParametersAtPV:

Public Member Functions
virtual StatusCode	initialize () override final
virtual StatusCode	addBranches (const EventContext &ctx) const override final
	Check that the current event passes this filter.

Private Attributes
SG::ReadHandleKey< xAOD::TrackParticleContainer >	m_collTrackKey { this, "TrackParticleContainerName", "InDetTrackParticles", ""}
SG::ReadHandleKey< xAOD::VertexContainer >	m_collVertexKey { this, "VertexContainerName", "PrimaryVertices", ""}
SG::WriteDecorHandleKey< xAOD::TrackParticleContainer >	m_trackZ0PVDecoKey { this, "Z0SGEntryName", m_collTrackKey, "DFCommonInDetTrackZ0AtPV"}

Detailed Description

the code used in this implementation is kindly stolen from: atlasoff:: ISF/ISF_Core/ISF_Tools

Author

James Catmore -at- cern.ch

Definition at line 32 of file TrackParametersAtPV.h.

Member Function Documentation

addBranches()

StatusCode DerivationFramework::TrackParametersAtPV::addBranches ( const EventContext & ctx ) const

finaloverridevirtual

Check that the current event passes this filter.

Definition at line 32 of file TrackParametersAtPV.cxx.

{
  SG::WriteDecorHandle<xAOD::TrackParticleContainer, float> track_z0_PV(m_trackZ0PVDecoKey, ctx);
 
  // Get Primary vertex
  SG::ReadHandle<xAOD::VertexContainer> vertices(m_collVertexKey,ctx);
  if(!vertices.isValid()) {
    ATH_MSG_ERROR ("Couldn't retrieve VertexContainer with key: " << m_collVertexKey.key());
    return StatusCode::FAILURE;
  }
 
  const xAOD::Vertex* pv(nullptr);
  for (const xAOD::Vertex* vx : *vertices) {
    if (vx->vertexType() == xAOD::VxType::PriVtx) {
      pv = vx;
      break;
    }
  }
 
  // Get the track container
  SG::ReadHandle<xAOD::TrackParticleContainer> tracks(m_collTrackKey,ctx);
  if(!tracks.isValid()) {
    ATH_MSG_ERROR ("Couldn't retrieve TrackParticleContainer with key: " << m_collTrackKey.key());
    return StatusCode::FAILURE;
  }
 
  // Get track z0 w.r.t PV
  for (const auto *trackIt : *tracks) {
    track_z0_PV(*trackIt) = pv ? trackIt->z0() + trackIt->vz() - pv->z() : 999.;
  }
 
  return StatusCode::SUCCESS;
}

initialize()

StatusCode DerivationFramework::TrackParametersAtPV::initialize ( )

finaloverridevirtual

Definition at line 17 of file TrackParametersAtPV.cxx.

{
   if (m_collTrackKey.key().empty() || m_collVertexKey.key().empty()) {
    ATH_MSG_ERROR("No selection variables for the TrackParametersAtPV tool!");
    return StatusCode::FAILURE;
  }
  ATH_CHECK( m_collTrackKey.initialize() );
  ATH_CHECK( m_collVertexKey.initialize() );
  ATH_CHECK( m_trackZ0PVDecoKey.initialize() );
 
  ATH_MSG_VERBOSE("initialize() ...");
  return StatusCode::SUCCESS;
}

Member Data Documentation

m_collTrackKey

SG::ReadHandleKey<xAOD::TrackParticleContainer> DerivationFramework::TrackParametersAtPV::m_collTrackKey { this, "TrackParticleContainerName", "InDetTrackParticles", ""}

private

Definition at line 45 of file TrackParametersAtPV.h.

{ this, "TrackParticleContainerName", "InDetTrackParticles", ""};

m_collVertexKey

SG::ReadHandleKey<xAOD::VertexContainer> DerivationFramework::TrackParametersAtPV::m_collVertexKey { this, "VertexContainerName", "PrimaryVertices", ""}

private

Definition at line 47 of file TrackParametersAtPV.h.

{ this, "VertexContainerName", "PrimaryVertices", ""};

m_trackZ0PVDecoKey

SG::WriteDecorHandleKey<xAOD::TrackParticleContainer> DerivationFramework::TrackParametersAtPV::m_trackZ0PVDecoKey { this, "Z0SGEntryName", m_collTrackKey, "DFCommonInDetTrackZ0AtPV"}

private

Definition at line 50 of file TrackParametersAtPV.h.

{ this, "Z0SGEntryName", m_collTrackKey, "DFCommonInDetTrackZ0AtPV"};

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The documentation for this class was generated from the following files:

• TrackParametersAtPV.h
• TrackParametersAtPV.cxx