MediaWiki  1.30.0
DeleteLinksJob.php
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1 <?php
24 
33 class DeleteLinksJob extends Job {
35  parent::__construct( 'deleteLinks', $title, $params );
36  $this->removeDuplicates = true;
37  }
38 
39  function run() {
40  if ( is_null( $this->title ) ) {
41  $this->setLastError( "deleteLinks: Invalid title" );
42  return false;
43  }
44 
45  $pageId = $this->params['pageId'];
46 
47  // Serialize links updates by page ID so they see each others' changes
48  $scopedLock = LinksUpdate::acquirePageLock( wfGetDB( DB_MASTER ), $pageId, 'job' );
49 
50  if ( WikiPage::newFromID( $pageId, WikiPage::READ_LATEST ) ) {
51  // The page was restored somehow or something went wrong
52  $this->setLastError( "deleteLinks: Page #$pageId exists" );
53  return false;
54  }
55 
56  $factory = MediaWikiServices::getInstance()->getDBLoadBalancerFactory();
57  $timestamp = isset( $this->params['timestamp'] ) ? $this->params['timestamp'] : null;
58  $page = WikiPage::factory( $this->title ); // title when deleted
59 
60  $update = new LinksDeletionUpdate( $page, $pageId, $timestamp );
61  $update->setTransactionTicket( $factory->getEmptyTransactionTicket( __METHOD__ ) );
62  $update->doUpdate();
63 
64  return true;
65  }
66 }
DeleteLinksJob
Job to prune link tables for pages that were deleted.
Definition: DeleteLinksJob.php:33
LinksUpdate\acquirePageLock
static acquirePageLock(IDatabase $dbw, $pageId, $why='atomicity')
Acquire a lock for performing link table updates for a page on a DB.
Definition: LinksUpdate.php:201
Job\$title
Title $title
Definition: Job.php:42
Job\$params
array $params
Array of job parameters.
Definition: Job.php:36
Job\setLastError
setLastError( $error)
Definition: Job.php:403
php
injection txt This is an overview of how MediaWiki makes use of dependency injection The design described here grew from the discussion of RFC T384 The term dependency this means that anything an object needs to operate should be injected from the the object itself should only know narrow no concrete implementation of the logic it relies on The requirement to inject everything typically results in an architecture that based on two main types of and essentially stateless service objects that use other service objects to operate on the value objects As of the beginning MediaWiki is only starting to use the DI approach Much of the code still relies on global state or direct resulting in a highly cyclical dependency which acts as the top level factory for services in MediaWiki which can be used to gain access to default instances of various services MediaWikiServices however also allows new services to be defined and default services to be redefined Services are defined or redefined by providing a callback the instantiator that will return a new instance of the service When it will create an instance of MediaWikiServices and populate it with the services defined in the files listed by thereby bootstrapping the DI framework Per $wgServiceWiringFiles lists includes ServiceWiring php
Definition: injection.txt:35
title
to move a page</td >< td > &*You are moving the page across *A non empty talk page already exists under the new or *You uncheck the box below In those you will have to move or merge the page manually if desired</td >< td > be sure to &You are responsible for making sure that links continue to point where they are supposed to go Note that the page will &a page at the new title
Definition: All_system_messages.txt:2696
Job
Class to both describe a background job and handle jobs.
Definition: Job.php:31
WikiPage\factory
static factory(Title $title)
Create a WikiPage object of the appropriate class for the given title.
Definition: WikiPage.php:121
wfGetDB
wfGetDB( $db, $groups=[], $wiki=false)
Get a Database object.
Definition: GlobalFunctions.php:2856
DB_MASTER
const DB_MASTER
Definition: defines.php:26
WikiPage\newFromID
static newFromID( $id, $from='fromdb')
Constructor from a page id.
Definition: WikiPage.php:159
LinksDeletionUpdate
Update object handling the cleanup of links tables after a page was deleted.
Definition: LinksDeletionUpdate.php:29
DeleteLinksJob\__construct
__construct(Title $title, array $params)
Definition: DeleteLinksJob.php:34
Title
Represents a title within MediaWiki.
Definition: Title.php:39
MediaWikiServices
injection txt This is an overview of how MediaWiki makes use of dependency injection The design described here grew from the discussion of RFC T384 The term dependency this means that anything an object needs to operate should be injected from the the object itself should only know narrow no concrete implementation of the logic it relies on The requirement to inject everything typically results in an architecture that based on two main types of and essentially stateless service objects that use other service objects to operate on the value objects As of the beginning MediaWiki is only starting to use the DI approach Much of the code still relies on global state or direct resulting in a highly cyclical dependency MediaWikiServices
Definition: injection.txt:23
DeleteLinksJob\run
run()
Run the job.
Definition: DeleteLinksJob.php:39
array
the array() calling protocol came about after MediaWiki 1.4rc1.