Wikibase\Client\Changes\ChangeRunCoalescer Class Reference

A transformer for lists of EntityChanges that combines runs of changes into a single change. More...

Public Member Functions
	__construct (EntityRevisionLookup $entityRevisionLookup, EntityChangeFactory $changeFactory, LoggerInterface $logger, $localSiteId)
	compareChangesByTimestamp (Change $a, Change $b)
	Compares two changes based on their timestamp.

Private Member Functions
	groupChangesByEntity (array $changes)
	Group changes by the entity they were applied to.
	isBadgesOnlyChange (DiffOp $siteLinkDiffOp)
	coalesceRuns (EntityId $entityId, array $changes)
	Coalesce consecutive changes by the same user to the same entity into one.

Private Attributes
	$entityRevisionLookup
	$changeFactory
	$logger
	$localSiteId

Detailed Description

A transformer for lists of EntityChanges that combines runs of changes into a single change.

A "run" of changes is a sequence of consecutive changes performed by the same user, and not interrupted by a "disruptive" change. Changes altering the association between pages on the local wiki and items on the repo are considered disruptive.

Copyright

GPL-2.0-or-later

Author

Daniel Kinzler

Constructor & Destructor Documentation

__construct()

Wikibase\Client\Changes\ChangeRunCoalescer::__construct	(	EntityRevisionLookup	$entityRevisionLookup,
		EntityChangeFactory	$changeFactory,
		LoggerInterface	$logger,
			$localSiteId
	)

Parameters

EntityRevisionLookup	$entityRevisionLookup
EntityChangeFactory	$changeFactory
LoggerInterface	$logger
string	$localSiteId

Member Function Documentation

coalesceRuns()

Wikibase\Client\Changes\ChangeRunCoalescer::coalesceRuns ( EntityId  $entityId, array  $changes  )

private

Coalesce consecutive changes by the same user to the same entity into one.

A run of changes may be broken if the action performed changes (e.g. deletion instead of update) or if a sitelink pointing to the local wiki was modified.

Some types of actions, like deletion, will break runs.

Parameters

EntityId	$entityId
EntityChange[]	$changes

Returns

Change[] grouped changes

compareChangesByTimestamp()

Wikibase\Client\Changes\ChangeRunCoalescer::compareChangesByTimestamp	(	Change	$a,
		Change	$b
	)

Compares two changes based on their timestamp.

Parameters

Change	$a
Change	$b

Returns

int

groupChangesByEntity()

Wikibase\Client\Changes\ChangeRunCoalescer::groupChangesByEntity ( array  $changes )

private

Group changes by the entity they were applied to.

Parameters

EntityChange[]

$changes

Returns

array[] an associative array using entity IDs for keys. Associated with each entity ID is the list of changes performed on that entity.

isBadgesOnlyChange()

Wikibase\Client\Changes\ChangeRunCoalescer::isBadgesOnlyChange ( DiffOp  $siteLinkDiffOp )

private

Parameters

DiffOp

$siteLinkDiffOp

Returns

bool

Member Data Documentation

$changeFactory

Wikibase\Client\Changes\ChangeRunCoalescer::$changeFactory

private

$entityRevisionLookup

Wikibase\Client\Changes\ChangeRunCoalescer::$entityRevisionLookup

private

$localSiteId

Wikibase\Client\Changes\ChangeRunCoalescer::$localSiteId

private

$logger

Wikibase\Client\Changes\ChangeRunCoalescer::$logger

private

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

• client/includes/Changes/ChangeRunCoalescer.php