SG::AuxElement::TypelessConstAccessor Class Reference

Helper class to provide const generic access to aux data. More...

#include <AuxElement.h>

List of all members.

Public Member Functions
	TypelessConstAccessor (const std::string &name)
	Constructor.
	TypelessConstAccessor (const std::type_info &ti, const std::string &name)
	Constructor.
	TypelessConstAccessor (const std::string &name, const std::string &clsname)
	Constructor.
	TypelessConstAccessor (const std::type_info &ti, const std::string &name, const std::string &clsname)
	Constructor.
const void *	operator() (const AuxElement &e) const
	Fetch the variable for one element, as a const pointer.
const void *	operator() (const AuxVectorData &container, size_t index) const
	Fetch the variable for one element, as a const pointer.
const void *	getDataArray (const AuxVectorData &container) const
	Get a pointer to the start of the auxiliary data array.
bool	isAvailable (const AuxElement &e) const
	Test to see if this variable exists in the store.
SG::auxid_t	auxid () const
	Return the aux id for this variable.
Protected Attributes
SG::auxid_t	m_auxid
	The cached auxid.
size_t	m_eltSize
	Cached element size.

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Detailed Description

Helper class to provide const generic access to aux data.

This is written as a separate class in order to be able to cache the name -> auxid lookup.

This should generally only be used by code which treats auxiliary data generically (that is, where the type is not known at compile-time). Most of the time, you'd want to use the type-safe versions ConstAccessor and Accessor.

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Constructor & Destructor Documentation

SG::AuxElement::TypelessConstAccessor::TypelessConstAccessor

(

const std::string &

name

)

[inline]

Constructor.

Parameters:

name

Name of this aux variable.

The name -> auxid lookup is done here.

SG::AuxElement::TypelessConstAccessor::TypelessConstAccessor	(	const std::type_info &	ti,
		const std::string &	name
	)			[inline]

Constructor.

Parameters:

	ti	The type for this aux data item.
	name	Name of this aux variable.

The name -> auxid lookup is done here.

SG::AuxElement::TypelessConstAccessor::TypelessConstAccessor	(	const std::string &	name,
		const std::string &	clsname
	)			[inline]

Constructor.

Parameters:

	name	Name of this aux variable.
	clsname	The name of its associated class. May be blank.

The name -> auxid lookup is done here.

SG::AuxElement::TypelessConstAccessor::TypelessConstAccessor	(	const std::type_info &	ti,
		const std::string &	name,
		const std::string &	clsname
	)			[inline]

Constructor.

Parameters:

	ti	The type for this aux data item.
	name	Name of this aux variable.
	clsname	The name of its associated class. May be blank.

The name -> auxid lookup is done here.

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Member Function Documentation

const void * SG::AuxElement::TypelessConstAccessor::getDataArray

(

const AuxVectorData &

container

)

const [inline]

Get a pointer to the start of the auxiliary data array.

Parameters:

container

The container from which to fetch the variable.

bool SG::AuxElement::TypelessConstAccessor::isAvailable

(

const AuxElement &

e

)

const [inline]

Test to see if this variable exists in the store.

Parameters:

e

An element of the container which to test the variable.

const void * SG::AuxElement::TypelessConstAccessor::operator()	(	const AuxVectorData &	container,
		size_t	index
	)			const [inline]

Fetch the variable for one element, as a const pointer.

Parameters:

	container	The container from which to fetch the variable.
	index	The index of the desired element.

This allows retrieving aux data by container / index. Looping over the index via this method will be faster then looping over the elements of the container.

const void * SG::AuxElement::TypelessConstAccessor::operator()

(

const AuxElement &

e

)

const [inline]

Fetch the variable for one element, as a const pointer.

Parameters:

e

The element for which to fetch the variable.

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

• /cvmfs/atlas.cern.ch/repo/sw/ASG/AnalysisBase/2.4.31/AthContainers/AthContainers/AuxElement.h
• /cvmfs/atlas.cern.ch/repo/sw/ASG/AnalysisBase/2.4.31/AthContainers/AthContainers/AuxElement.icc