Cache for article titles (prefixed DB keys) and ids linked from one source. More...

Collaboration diagram for LinkCache:

Public Member Functions
	__construct (TitleFormatter $titleFormatter)

	addBadLinkObj (LinkTarget $target)

	addGoodLinkObj ($id, LinkTarget $target, $len=-1, $redir=null, $revision=0, $model=null, $lang=null)
	Add a link for the title to the link cache. More...

	addGoodLinkObjFromRow (LinkTarget $target, $row)
	Same as above with better interface. More...

	addLink ($title)
	Add a title to the link cache, return the page_id or zero if non-existent. More...

	addLinkObj (LinkTarget $nt)
	Add a title to the link cache, return the page_id or zero if non-existent. More...

	clear ()
	Clears cache. More...

	clearBadLink ($title)

	clearLink (LinkTarget $target)

	forUpdate ($update=null)
	General accessor to get/set whether the master DB should be used. More...

	getGoodLinkFieldObj (LinkTarget $target, $field)
	Get a field of a title object from cache. More...

	getGoodLinkID ($title)

	isBadLink ($title)

Static Public Member Functions
static	getSelectFields ()
	Fields that LinkCache needs to select. More...

static	singleton ()
	Get an instance of this class. More...

Public Attributes
const	MAX_SIZE = 10000
	How many Titles to store. More...

Private Attributes
HashBagOStuff	$mBadLinks

	$mForUpdate = false

HashBagOStuff	$mGoodLinks

TitleFormatter	$titleFormatter

Detailed Description

Cache for article titles (prefixed DB keys) and ids linked from one source.

Definition at line 31 of file LinkCache.php.

Constructor & Destructor Documentation

LinkCache::__construct ( TitleFormatter $titleFormatter )

Definition at line 53 of file LinkCache.php.

References $titleFormatter.

Member Function Documentation

LinkCache::addBadLinkObj ( LinkTarget $target )

Parameters

LinkTarget $target

Definition at line 167 of file LinkCache.php.

References isBadLink().

Referenced by addLinkObj().

LinkCache::addGoodLinkObj	(		$id,
		LinkTarget	$target,
			$len = `-1`,
			$redir = `null`,
			$revision = `0`,
			$model = `null`,
			$lang = `null`
	)

Add a link for the title to the link cache.

Parameters

int	$id	Page's ID
LinkTarget	$target
int	$len	Text's length
int	$redir	Whether the page is a redirect
int	$revision	Latest revision's ID
string \| null	$model	Latest revision's content model ID
string \| null	$lang	Language code of the page, if not the content language

Definition at line 131 of file LinkCache.php.

References $lang.

LinkCache::addGoodLinkObjFromRow	(	LinkTarget	$target,
			$row
	)

Same as above with better interface.

Since: 1.19

Parameters

LinkTarget	$target
stdClass	$row	Object which has the fields page_id, page_is_redirect, page_latest and page_content_model

Definition at line 152 of file LinkCache.php.

Referenced by addLinkObj().

LinkCache::addLink ( $title )

Add a title to the link cache, return the page_id or zero if non-existent.

Deprecated:

since 1.27, unused

Parameters

string $title Prefixed DB key

Returns: int Page ID or zero

Definition at line 197 of file LinkCache.php.

References $title, addLinkObj(), and Title\newFromDBkey().

LinkCache::addLinkObj ( LinkTarget $nt )

Add a title to the link cache, return the page_id or zero if non-existent.

Parameters

LinkTarget $nt LinkTarget object to add

Returns: int Page ID or zero

Definition at line 231 of file LinkCache.php.

References addBadLinkObj(), addGoodLinkObjFromRow(), DB_MASTER, DB_SLAVE, MediaWiki\Linker\LinkTarget\getDBkey(), getGoodLinkID(), MediaWiki\Linker\LinkTarget\getNamespace(), MediaWiki\Linker\LinkTarget\inNamespace(), isBadLink(), MediaWiki\Linker\LinkTarget\isExternal(), NS_SPECIAL, and wfGetDB().

Referenced by addLink().

LinkCache::clear ( )

Clears cache.

Definition at line 269 of file LinkCache.php.

LinkCache::clearBadLink ( $title )

Parameters

string $title Prefixed DB key

Definition at line 177 of file LinkCache.php.

References $title.

LinkCache::clearLink ( LinkTarget $target )

Parameters

LinkTarget $target

Definition at line 184 of file LinkCache.php.

LinkCache::forUpdate ( $update = null )

General accessor to get/set whether the master DB should be used.

This used to also set the FOR UPDATE option (locking the rows read in order to avoid link table inconsistency), which was later removed for performance on wikis with a high edit rate.

Parameters

bool $update

Returns: bool

Definition at line 79 of file LinkCache.php.

References wfSetVar().

LinkCache::getGoodLinkFieldObj	(	LinkTarget	$target,
			$field
	)

Get a field of a title object from cache.

If this link is not a cached good title, it will return NULL.

Parameters

LinkTarget	$target
string	$field	('length','redirect','revision','model')

Returns: string|int|null

Definition at line 102 of file LinkCache.php.

LinkCache::getGoodLinkID ( $title )

Parameters

string $title Prefixed DB key

Returns: int Page ID or zero

Definition at line 87 of file LinkCache.php.

References $title.

Referenced by addLinkObj().

static LinkCache::getSelectFields ( )

static

Fields that LinkCache needs to select.

Since: 1.28

Returns: array

Definition at line 211 of file LinkCache.php.

References $wgContentHandlerUseDB, $wgPageLanguageUseDB, and global.

Referenced by OutputPage\addCategoryLinks(), LinkBatch\doQuery(), LinkHolderArray\doVariants(), LinkHolderArray\replaceInternal(), and SpecialPrefixindex\showPrefixChunk().

LinkCache::isBadLink ( $title )

Parameters

string $title Prefixed DB key

Returns: bool

Definition at line 115 of file LinkCache.php.

References $title.

Referenced by addBadLinkObj(), and addLinkObj().

static LinkCache::singleton ( )

static

Get an instance of this class.

Returns: LinkCache

Deprecated:: since 1.28, use MediaWikiServices instead

Definition at line 65 of file LinkCache.php.

Referenced by OutputPage\addCategoryLinks(), NewParserTest\addDBDataOnce(), Title\clearCaches(), LinkHolderArray\doVariants(), JobRunner\executeJob(), RefreshLinks\fixLinksFromArticle(), Title\getArticleID(), Title\getContentModel(), Title\getDbPageLanguageCode(), Title\getLatestRevID(), Title\getLength(), Title\getLinksFrom(), Title\getLinksTo(), Title\isRedirect(), WikiPage\loadFromRow(), TitleCleanup\moveInconsistentPage(), CoreParserFunctions\pageid(), LinkHolderArray\replaceInternal(), Title\resetArticleID(), MediaWikiTestCase\resetDB(), WikiPageTest\setUp(), ParserOptions\setupFakeRevision(), Parser\statelessFetchTemplate(), NewParserTest\tearDown(), ParserTest\teardownGlobals(), TitleMethodsTest\testClearCaches(), TitleTest\testExists(), ContentHandlerTest\testGetForTitle(), ContentHandlerTest\testGetPageLanguage(), ContentHandlerTest\testMakeContent(), and WikiPage\updateRevisionOn().

Member Data Documentation

HashBagOStuff LinkCache::$mBadLinks

private

Definition at line 39 of file LinkCache.php.

LinkCache::$mForUpdate = false

private

Definition at line 40 of file LinkCache.php.

HashBagOStuff LinkCache::$mGoodLinks

private

Definition at line 35 of file LinkCache.php.

TitleFormatter LinkCache::$titleFormatter

private

Definition at line 45 of file LinkCache.php.

Referenced by __construct().

const LinkCache::MAX_SIZE = 10000

How many Titles to store.

There are two caches, so the amount actually stored in memory can be up to twice this.

Definition at line 51 of file LinkCache.php.

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

includes/cache/LinkCache.php

Public Member Functions

Static Public Member Functions

Public Attributes

Private Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation