Wikibase\Lib\Store\DispatchingFallbackLabelDescriptionLookup Class Reference

A FallbackLabelDescriptionLookup that dispatches between two other lookups, using one for federated property IDs and one for everything else. More...

Inheritance diagram for Wikibase\Lib\Store\DispatchingFallbackLabelDescriptionLookup:

Collaboration diagram for Wikibase\Lib\Store\DispatchingFallbackLabelDescriptionLookup:

Public Member Functions
	__construct (FallbackLabelDescriptionLookup $standardLookup, FallbackLabelDescriptionLookup $federatedPropertiesLookup)
	getLabel (EntityId $entityId)
	getDescription (EntityId $entityId)

Private Member Functions
	getLookup (EntityId $entityId)

Private Attributes
	$standardLookup
	$federatedPropertiesLookup

Detailed Description

A FallbackLabelDescriptionLookup that dispatches between two other lookups, using one for federated property IDs and one for everything else.

This is necessary because the lookup implementation we want to use for most entity IDs, CachingFallbackLabelDescriptionLookup, does not support federated properties, because it requires an EntityRevisionLookup (to get the latest revision ID for the cache key), which is not available for federated properties as of July 2022.

This class should only be used by FallbackLabelDescriptionLookupFactory. Do not use it directly. Once the standard lookup supports federated properties, this class can hopefully be removed again.

Copyright

GPL-2.0-or-later

Constructor & Destructor Documentation

__construct()

Wikibase\Lib\Store\DispatchingFallbackLabelDescriptionLookup::__construct	(	FallbackLabelDescriptionLookup	$standardLookup,
		FallbackLabelDescriptionLookup	$federatedPropertiesLookup )

Parameters

FallbackLabelDescriptionLookup	$standardLookup	The lookup used for most entity IDs. Usually a CachingFallbackLabelDescriptionLookup.
FallbackLabelDescriptionLookup	$federatedPropertiesLookup	The lookup used for federated property IDs. Usually a LanguageFallbackLabelDescriptionLookup.

Member Function Documentation

getDescription()

Wikibase\Lib\Store\DispatchingFallbackLabelDescriptionLookup::getDescription

(

EntityId

$entityId

)

Parameters

EntityId

$entityId

Exceptions

LabelDescriptionLookupException

Returns

TermFallback|null

Implements Wikibase\Lib\Store\FallbackLabelDescriptionLookup.

getLabel()

Wikibase\Lib\Store\DispatchingFallbackLabelDescriptionLookup::getLabel

(

EntityId

$entityId

)

Parameters

EntityId

$entityId

Exceptions

LabelDescriptionLookupException

Returns

TermFallback|null

Implements Wikibase\Lib\Store\FallbackLabelDescriptionLookup.

getLookup()

Wikibase\Lib\Store\DispatchingFallbackLabelDescriptionLookup::getLookup ( EntityId $entityId )

private

Member Data Documentation

$federatedPropertiesLookup

Wikibase\Lib\Store\DispatchingFallbackLabelDescriptionLookup::$federatedPropertiesLookup

private

$standardLookup

Wikibase\Lib\Store\DispatchingFallbackLabelDescriptionLookup::$standardLookup

private

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

• lib/includes/Store/DispatchingFallbackLabelDescriptionLookup.php