DerivationFramework::TrackParametersAtPV Class Reference

#include <TrackParametersAtPV.h>

Inheritance diagram for DerivationFramework::TrackParametersAtPV:

Collaboration diagram for DerivationFramework::TrackParametersAtPV:

Public Member Functions
	TrackParametersAtPV (const std::string &t, const std::string &n, const IInterface *p)
	Constructor with parameters. More...
	~TrackParametersAtPV ()
	Destructor. More...
StatusCode	initialize ()
StatusCode	finalize ()
virtual StatusCode	addBranches (const EventContext &ctx) const
	Check that the current event passes this filter. More...

Private Attributes
SG::ReadHandleKey< xAOD::TrackParticleContainer >	m_collTrackKey { this, "TrackParticleContainerName", "InDetTrackParticles", ""}
SG::ReadHandleKey< xAOD::VertexContainer >	m_collVertexKey { this, "VertexContainerName", "PrimaryVertices", ""}
SG::WriteHandleKey< std::vector< float > >	m_trackZ0PVKey { this, "Z0SGEntryName", "", "" }

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 35 of file TrackParametersAtPV.h.

Constructor & Destructor Documentation

TrackParametersAtPV()

DerivationFramework::TrackParametersAtPV::TrackParametersAtPV	(	const std::string &	t,
		const std::string &	n,
		const IInterface *	p
	)

Constructor with parameters.

Definition at line 16 of file TrackParametersAtPV.cxx.

                                                                       :
  base_class(t,n,p)
  {
  }

~TrackParametersAtPV()

DerivationFramework::TrackParametersAtPV::~TrackParametersAtPV ( )

default

Destructor.

Member Function Documentation

addBranches()

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

virtual

Check that the current event passes this filter.

Definition at line 53 of file TrackParametersAtPV.cxx.

{
  SG::WriteHandle< std::vector<float> >track_z0_PV(m_trackZ0PVKey,ctx);
  ATH_CHECK(track_z0_PV.record(std::make_unique< std::vector<float> >()));
 
  // 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) {
    if (pv) {
      float z0wrtPV = trackIt->z0() + trackIt->vz() - pv->z();
      track_z0_PV->push_back(z0wrtPV);
 
    } else {
      track_z0_PV->push_back(999.);
    }
  }
 
  return StatusCode::SUCCESS;
}

finalize()

StatusCode DerivationFramework::TrackParametersAtPV::finalize

(

)

Definition at line 46 of file TrackParametersAtPV.cxx.

{
  ATH_MSG_VERBOSE("finalize() ...");
  return StatusCode::SUCCESS;
}

initialize()

StatusCode DerivationFramework::TrackParametersAtPV::initialize

(

)

Definition at line 27 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() );
 
  if (m_trackZ0PVKey.key().empty()) {
    ATH_MSG_ERROR("No Store Gate Keys for the TrackParametersAtPV tool!");
    return StatusCode::FAILURE;
  }
  ATH_CHECK( m_trackZ0PVKey.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 52 of file TrackParametersAtPV.h.

m_collVertexKey

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

private

Definition at line 54 of file TrackParametersAtPV.h.

m_trackZ0PVKey

SG::WriteHandleKey< std::vector<float> > DerivationFramework::TrackParametersAtPV::m_trackZ0PVKey { this, "Z0SGEntryName", "", "" }

private

Definition at line 57 of file TrackParametersAtPV.h.

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

• TrackParametersAtPV.h
• TrackParametersAtPV.cxx