columnar::EgammaHelpers::IsConvertedPhotonAccessor< CI, CM > Class Template Reference

#include <EgammaHelpers.h>

Collaboration diagram for columnar::EgammaHelpers::IsConvertedPhotonAccessor< CI, CM >:

Public Member Functions
	IsConvertedPhotonAccessor (ColumnarTool< CM > &columnarTool)
std::pair< bool, unsigned >	operator() (ObjectId< CI, CM > photon, bool excludeTRT) const
	return whether the photon is converted, and a bitmask of missing links

Private Attributes
ColumnAccessor< CI, float, CM >	m_etaAcc
ColumnAccessor< CI, std::vector< OptObjectId< ContainerId::vertex, CM > >, CM >	m_vertexLinksAcc
VertexAccessor< std::vector< OptObjectId< ContainerId::track, CM > >, CM >	m_trackParticleLinksAcc
TrackAccessor< std::uint8_t, CM >	m_numberOfPixelHitsAcc
TrackAccessor< std::uint8_t, CM >	m_numberOfSCTHitsAcc
ColumnAccessor< CI, RetypeColumn< xAOD::Type::ObjectType, std::uint16_t >, CM >	m_objectTypeAcc

Detailed Description

template<ContainerIdConcept CI = ContainerId::egamma, typename CM = ColumnarModeDefault>
class columnar::EgammaHelpers::IsConvertedPhotonAccessor< CI, CM >

Definition at line 32 of file EgammaHelpers.h.

Constructor & Destructor Documentation

IsConvertedPhotonAccessor()

template<ContainerIdConcept CI = ContainerId::egamma, typename CM = ColumnarModeDefault>

columnar::EgammaHelpers::IsConvertedPhotonAccessor< CI, CM >::IsConvertedPhotonAccessor ( ColumnarTool< CM > & columnarTool )

inline

Definition at line 42 of file EgammaHelpers.h.

        : m_etaAcc (columnarTool, "eta"),
          m_vertexLinksAcc (columnarTool, "vertexLinks"),
          m_trackParticleLinksAcc (columnarTool, "trackParticleLinks", {.isOptional = true}),
          m_numberOfPixelHitsAcc (columnarTool, "numberOfPixelHits"),
          m_numberOfSCTHitsAcc (columnarTool, "numberOfSCTHits")
      {
        if constexpr (!CM::isXAOD)
          resetAccessor (m_objectTypeAcc, columnarTool, "objectType", {.isOptional = true});
      }

Member Function Documentation

operator()()

template<ContainerIdConcept CI = ContainerId::egamma, typename CM = ColumnarModeDefault>

std::pair< bool, unsigned > columnar::EgammaHelpers::IsConvertedPhotonAccessor< CI, CM >::operator() ( ObjectId< CI, CM > photon, bool excludeTRT ) const

inline

return whether the photon is converted, and a bitmask of missing links

It is up to the called to decide whether they want to do anything for the missing links. The reason to report it out is that the caller will have a message stream, configurable properties, etc. which an accessor helper does not have.

Definition at line 60 of file EgammaHelpers.h.

      {
        // While the accessor is generally meant to be used with
        // photons, sometimes electrons are passed as photons for
        // performance studies, etc.  In xAOD mode we can just check
        // `IParticle::type()`, while in columnar mode we need the user
        // to pass that in as an extra column.  Having an extra column
        // for that feels like a bit of an overkill, but it is optional
        // here, and we can revisit it later if it becomes an issue.
        xAOD::Type::ObjectType type = xAOD::Type::Photon;
        if constexpr (CM::isXAOD)
        {
          type = photon.getXAODObjectNoexcept().type();
        } else
        {
          if (m_objectTypeAcc.isAvailable(photon))
            type = m_objectTypeAcc(photon);
        }
        if (type != xAOD::Type::Photon)
          return std::make_pair (false, 0x0);
 
        const auto vertices = m_vertexLinksAcc(photon);
        if (vertices.size() == 0) return std::make_pair (false, 0x0);
        if (!vertices[0].has_value())
          return std::make_pair (false, 0x1);
 
        unsigned missingLinks = 0x0;
 
        auto vertex = vertices[0].value();
        bool hasTrk1 = false;
        bool hasTrk2 = false;
        std::uint8_t nSiHits1 = 0;
        std::uint8_t nSiHits2 = 0;
        if (m_trackParticleLinksAcc.isAvailable(vertex)) {
          const auto tracks = m_trackParticleLinksAcc(vertex);
          if (tracks.size() > 0) {
            if (tracks[0].has_value()) {
              hasTrk1 = true;
              nSiHits1 += m_numberOfPixelHitsAcc(tracks[0].value());
              nSiHits1 += m_numberOfSCTHitsAcc(tracks[0].value());
            } else missingLinks |= 0x2;
          }
          if (tracks.size() > 1) {
            if (tracks[1].has_value()) {
              hasTrk2 = true;
              nSiHits2 += m_numberOfPixelHitsAcc(tracks[1].value());
              nSiHits2 += m_numberOfSCTHitsAcc(tracks[1].value());
            } else missingLinks |= 0x4;
          }
        }
 
        auto conversionType = xAOD::EgammaDetails::conversionType(hasTrk1, hasTrk2, nSiHits1, nSiHits2);
        return std::make_pair (xAOD::EgammaDetails::isConvertedPhoton (excludeTRT, photon(m_etaAcc), vertices.size(), conversionType), missingLinks);
      }

Member Data Documentation

m_etaAcc

template<ContainerIdConcept CI = ContainerId::egamma, typename CM = ColumnarModeDefault>

ColumnAccessor<CI,float,CM> columnar::EgammaHelpers::IsConvertedPhotonAccessor< CI, CM >::m_etaAcc

private

Definition at line 34 of file EgammaHelpers.h.

m_numberOfPixelHitsAcc

template<ContainerIdConcept CI = ContainerId::egamma, typename CM = ColumnarModeDefault>

TrackAccessor<std::uint8_t,CM> columnar::EgammaHelpers::IsConvertedPhotonAccessor< CI, CM >::m_numberOfPixelHitsAcc

private

Definition at line 37 of file EgammaHelpers.h.

m_numberOfSCTHitsAcc

template<ContainerIdConcept CI = ContainerId::egamma, typename CM = ColumnarModeDefault>

TrackAccessor<std::uint8_t,CM> columnar::EgammaHelpers::IsConvertedPhotonAccessor< CI, CM >::m_numberOfSCTHitsAcc

private

Definition at line 38 of file EgammaHelpers.h.

m_objectTypeAcc

template<ContainerIdConcept CI = ContainerId::egamma, typename CM = ColumnarModeDefault>

ColumnAccessor<CI,RetypeColumn<xAOD::Type::ObjectType,std::uint16_t>,CM> columnar::EgammaHelpers::IsConvertedPhotonAccessor< CI, CM >::m_objectTypeAcc

private

Definition at line 39 of file EgammaHelpers.h.

m_trackParticleLinksAcc

template<ContainerIdConcept CI = ContainerId::egamma, typename CM = ColumnarModeDefault>

VertexAccessor<std::vector<OptObjectId<ContainerId::track,CM> >,CM> columnar::EgammaHelpers::IsConvertedPhotonAccessor< CI, CM >::m_trackParticleLinksAcc

private

Definition at line 36 of file EgammaHelpers.h.

m_vertexLinksAcc

template<ContainerIdConcept CI = ContainerId::egamma, typename CM = ColumnarModeDefault>

ColumnAccessor<CI,std::vector<OptObjectId<ContainerId::vertex,CM> >,CM> columnar::EgammaHelpers::IsConvertedPhotonAccessor< CI, CM >::m_vertexLinksAcc

private

Definition at line 35 of file EgammaHelpers.h.

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

• EgammaHelpers.h