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<?php
namespace SMW\MediaWiki\Jobs;
use SMW\MediaWiki\Job;
use Hooks;
use SMW\ApplicationFactory;
use SMW\SQLStore\PropertyTableIdReferenceDisposer;
use SMW\SQLStore\SQLStore;
use Title;
/**
* @license GNU GPL v2+
* @since 2.5
*
* @author mwjames
*/
class EntityIdDisposerJob extends Job {
/**
* Commit chunk size
*/
const CHUNK_SIZE = 200;
/**
* @since 2.5
*
* @param Title $title
* @param array $params job parameters
*/
public function __construct( Title $title, $params = [] ) {
parent::__construct( 'smw.entityIdDisposer', $title, $params );
$this->removeDuplicates = true;
}
/**
* @since 2.5
*
* @return ResultIterator
*/
public function newOutdatedEntitiesResultIterator() {
return $this->newPropertyTableIdReferenceDisposer()->newOutdatedEntitiesResultIterator();
}
/**
* @since 2.5
*
* @param integer|stdClass $id
*/
public function dispose( $id ) {
$propertyTableIdReferenceDisposer = $this->newPropertyTableIdReferenceDisposer();
if ( is_int( $id ) ) {
return $propertyTableIdReferenceDisposer->cleanUpTableEntriesById( $id );
}
$propertyTableIdReferenceDisposer->cleanUpTableEntriesByRow( $id );
}
/**
* @see Job::run
*
* @since 2.5
*/
public function run() {
$propertyTableIdReferenceDisposer = $this->newPropertyTableIdReferenceDisposer();
// MW 1.29+ Avoid transaction collisions during Job execution
$propertyTableIdReferenceDisposer->waitOnTransactionIdle();
if ( $this->hasParameter( 'id' ) ) {
$this->dispose( $this->getParameter( 'id' ) );
} else {
$this->dispose_all( $this->newOutdatedEntitiesResultIterator() );
}
return true;
}
private function dispose_all( $outdatedEntitiesResultIterator ) {
// Make sure the script is only executed from the command line to avoid
// Special:RunJobs to execute a queued job
if ( $this->waitOnCommandLineMode() ) {
return true;
}
$applicationFactory = ApplicationFactory::getInstance();
$connection = $applicationFactory->getStore()->getConnection( 'mw.db' );
$chunkedIterator = $applicationFactory->getIteratorFactory()->newChunkedIterator(
$outdatedEntitiesResultIterator,
self::CHUNK_SIZE
);
foreach ( $chunkedIterator as $chunk ) {
$transactionTicket = $connection->getEmptyTransactionTicket( __METHOD__ );
foreach ( $chunk as $row ) {
$this->dispose( $row );
}
$connection->commitAndWaitForReplication( __METHOD__, $transactionTicket );
}
}
private function newPropertyTableIdReferenceDisposer() {
$applicationFactory = ApplicationFactory::getInstance();
$store = $applicationFactory->getStore();
// Expect access to the SQL table structure therefore enforce the
// SQLStore that provides those methods
if ( !is_a( $store, SQLStore::class ) ) {
$store = $applicationFactory->getStore( '\SMW\SQLStore\SQLStore' );
}
return new PropertyTableIdReferenceDisposer( $store );
}
}
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