HepMcParticleLink Class Reference

a link optimized in size for a GenParticle in a McEventCollection More...

#include <HepMcParticleLink.h>

Public Types
typedef unsigned int	index_type

Public Member Functions
structors
	HepMcParticleLink ()
	HepMcParticleLink (index_type barCode, index_type eventIndex=0)
	HepMcParticleLink (const HepMC::GenParticle *p, index_type eventIndex=0)
	HepMcParticleLink (const HepMcParticleLink &rhs)
	HepMcParticleLink (const HepMC::GenParticle *part, const HepMC::GenEvent *pevt)
pointer interface
const HepMC::GenParticle &	operator* () const
const HepMC::GenParticle *	operator-> () const
	operator const HepMC::GenParticle * () const
bool	operator! () const

indexing accessors (e.g. for writing)
int	barcode () const
index_type	eventIndex () const
bool	isValid () const
const HepMC::GenParticle *	cptr () const

Detailed Description

a link optimized in size for a GenParticle in a McEventCollection

See also

McEventCollection, GenEvent, ElementLink

Author

Paolo Calafiura

Id

HepMcParticleLink.h,v 1.1.1.1 2004/09/28 06:40:36 liwd Exp

Definition at line 17 of file HepMcParticleLink.h.

Member Typedef Documentation

index_type

unsigned int HepMcParticleLink::index_type

Definition at line 19 of file HepMcParticleLink.h.

Constructor & Destructor Documentation

HepMcParticleLink() [1/5]

HepMcParticleLink::HepMcParticleLink ( )

inline

Definition at line 23 of file HepMcParticleLink.h.

: m_particle(0), m_extBarcode() {}

HepMcParticleLink() [2/5]

HepMcParticleLink::HepMcParticleLink ( index_type barCode, index_type eventIndex = 0 )

inline

Definition at line 24 of file HepMcParticleLink.h.

                                                                   :
    m_particle(0), m_extBarcode(barCode, eventIndex) {}

HepMcParticleLink() [3/5]

HepMcParticleLink::HepMcParticleLink	(	const HepMC::GenParticle *	p,
		index_type	eventIndex = 0 )

Definition at line 8 of file HepMcParticleLink.cxx.

                                            :
    m_particle(const_cast<HepMC::GenParticle*>(part)), 
    m_extBarcode((0 != part) ? part->barcode() : 0, eventIndex) {
  assert(part);
}

HepMcParticleLink() [4/5]

HepMcParticleLink::HepMcParticleLink ( const HepMcParticleLink & rhs )

inline

Definition at line 27 of file HepMcParticleLink.h.

                                                  : 
    m_particle(rhs.m_particle),
    m_extBarcode(rhs.m_extBarcode) {}

HepMcParticleLink() [5/5]

HepMcParticleLink::HepMcParticleLink	(	const HepMC::GenParticle *	part,
		const HepMC::GenEvent *	pevt )

Member Function Documentation

barcode()

int HepMcParticleLink::barcode ( ) const

inline

Definition at line 45 of file HepMcParticleLink.h.

{ return m_extBarcode.barcode(); }

Referenced by cptr().

cptr()

const HepMC::GenParticle * HepMcParticleLink::cptr

(

)

const

Definition at line 15 of file HepMcParticleLink.cxx.

                                                      {
  if (!m_particle) {
    const McEventCollection* pEvtColl;
    if ((StoreGate::instance().retrieve(pEvtColl)).isSuccess()) { //FIXME SLOW
      m_particle = pEvtColl->at(eventIndex())->barcode_to_particle(barcode());
    }
  }
  return m_particle;
}

Referenced by isValid(), operator const HepMC::GenParticle *(), operator*(), and operator->().

eventIndex()

index_type HepMcParticleLink::eventIndex ( ) const

inline

Definition at line 46 of file HepMcParticleLink.h.

{ return m_extBarcode.eventIndex(); }

Referenced by cptr().

isValid()

bool HepMcParticleLink::isValid ( ) const

inline

Definition at line 49 of file HepMcParticleLink.h.

{ return (0 != cptr()); }

Referenced by operator!().

operator const HepMC::GenParticle *()

HepMcParticleLink::operator const HepMC::GenParticle * ( ) const

inline

Definition at line 39 of file HepMcParticleLink.h.

{ return cptr(); }

operator!()

bool HepMcParticleLink::operator! ( ) const

inline

Definition at line 40 of file HepMcParticleLink.h.

{return !isValid();}

operator*()

const HepMC::GenParticle & HepMcParticleLink::operator* ( ) const

inline

Exceptions

std::runtime_error

when the element is not found

Definition at line 37 of file HepMcParticleLink.h.

{ return *cptr(); }//FIXME

operator->()

const HepMC::GenParticle * HepMcParticleLink::operator-> ( ) const

inline

Definition at line 38 of file HepMcParticleLink.h.

{ return cptr(); }

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

• HepMcParticleLink.h
• HepMcParticleLink.cxx