IDPVM::CachedGetAssocTruth Class Reference

#include <CachedGetAssocTruth.h>

Collaboration diagram for IDPVM::CachedGetAssocTruth:

Public Member Functions
	CachedGetAssocTruth ()=default
CachedGetAssocTruth &	operator= (CachedGetAssocTruth &&)=default
	CachedGetAssocTruth (CachedGetAssocTruth &&)=default
	~CachedGetAssocTruth ()=default
CachedGetAssocTruth &	operator= (const CachedGetAssocTruth &)=delete
	copy and assignment are not possible
	CachedGetAssocTruth (const CachedGetAssocTruth &)=delete
void	clear ()
	clear the cache
const xAOD::TruthParticle *	operator() (const xAOD::TrackParticle *trackParticle)
	Get the associated truth particle, given a track particle.
const xAOD::TruthParticle *	getTruth (const xAOD::TrackParticle *const trackParticle)

Static Public Member Functions
static void	neededTrackParticleDecorations (std::vector< std::string > &decorations)

Private Attributes
std::unordered_map< const xAOD::TrackParticle *, const xAOD::TruthParticle * >	m_cache
	private cache container; map or unordered_map could be used

Static Private Attributes
static const std::string	s_trackParticleLinkDecorationName

Detailed Description

Definition at line 21 of file CachedGetAssocTruth.h.

Constructor & Destructor Documentation

CachedGetAssocTruth() [1/3]

IDPVM::CachedGetAssocTruth::CachedGetAssocTruth ( )

default

CachedGetAssocTruth() [2/3]

IDPVM::CachedGetAssocTruth::CachedGetAssocTruth ( CachedGetAssocTruth && )

default

~CachedGetAssocTruth()

IDPVM::CachedGetAssocTruth::~CachedGetAssocTruth ( )

default

CachedGetAssocTruth() [3/3]

IDPVM::CachedGetAssocTruth::CachedGetAssocTruth ( const CachedGetAssocTruth & )

delete

Member Function Documentation

clear()

void IDPVM::CachedGetAssocTruth::clear

(

)

clear the cache

Definition at line 17 of file CachedGetAssocTruth.cxx.

                             {
    m_cache.clear();
  }

getTruth()

const xAOD::TruthParticle * IDPVM::CachedGetAssocTruth::getTruth

(

const xAOD::TrackParticle *const

trackParticle

)

Definition at line 29 of file CachedGetAssocTruth.cxx.

                                                                      {
    if (not trackParticle) {
      return nullptr;
    }
    auto pCache = m_cache.find(trackParticle);
    if (pCache != m_cache.end()) {
      return pCache->second;
    }
    using ElementTruthLink_t = ElementLink<xAOD::TruthParticleContainer>;
    const xAOD::TruthParticle* result(nullptr);
    static const SG::ConstAccessor<ElementTruthLink_t> truthParticleLinkAcc(s_trackParticleLinkDecorationName);
    // 0. is there any truth?
    if (truthParticleLinkAcc.isAvailable(*trackParticle)) {
      // 1. ..then get link
      const ElementTruthLink_t ptruthContainer = truthParticleLinkAcc(*trackParticle);
      if (ptruthContainer.isValid()) {
        result = *ptruthContainer;
      }
    }
    m_cache[trackParticle] = result;
    return result;
  }

neededTrackParticleDecorations()

void IDPVM::CachedGetAssocTruth::neededTrackParticleDecorations ( std::vector< std::string > & decorations )

static

Definition at line 23 of file CachedGetAssocTruth.cxx.

                                                                                            {
     if (std::find(decorations.begin(),decorations.end(),s_trackParticleLinkDecorationName) == decorations.end()) {
        decorations.push_back(s_trackParticleLinkDecorationName);
     }
  }

operator()()

const xAOD::TruthParticle * IDPVM::CachedGetAssocTruth::operator()

(

const xAOD::TrackParticle *

trackParticle

)

Get the associated truth particle, given a track particle.

Definition at line 53 of file CachedGetAssocTruth.cxx.

                                                                          {
    return getTruth(trackParticle);
  }

operator=() [1/2]

CachedGetAssocTruth & IDPVM::CachedGetAssocTruth::operator= ( CachedGetAssocTruth && )

default

operator=() [2/2]

CachedGetAssocTruth & IDPVM::CachedGetAssocTruth::operator= ( const CachedGetAssocTruth & )

delete

copy and assignment are not possible

Member Data Documentation

m_cache

std::unordered_map<const xAOD::TrackParticle*, const xAOD::TruthParticle*> IDPVM::CachedGetAssocTruth::m_cache

private

private cache container; map or unordered_map could be used

Definition at line 39 of file CachedGetAssocTruth.h.

s_trackParticleLinkDecorationName

const std::string IDPVM::CachedGetAssocTruth::s_trackParticleLinkDecorationName

staticprivate

Definition at line 40 of file CachedGetAssocTruth.h.

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

• CachedGetAssocTruth.h
• CachedGetAssocTruth.cxx