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<?php
namespace SMW\SQLStore\QueryDependency;
use SMW\DIProperty;
use SMW\DIWikiPage;
use SMW\Message;
use SMW\RequestOptions;
use SMW\SemanticData;
/**
* @license GNU GPL v2+
* @since 2.5
*
* @author mwjames
*/
class QueryReferenceBacklinks {
/**
* @var QueryDependencyLinksStore
*/
private $queryDependencyLinksStore = null;
/**
* @since 2.5
*
* @param QueryDependencyLinksStore $queryDependencyLinksStore
*/
public function __construct( QueryDependencyLinksStore $queryDependencyLinksStore ) {
$this->queryDependencyLinksStore = $queryDependencyLinksStore;
}
/**
* @since 2.5
*
* @param SemanticData $semanticData
* @param RequestOptions|null $requestOptions
*
* @return boolean
*/
public function addReferenceLinksTo( SemanticData $semanticData, RequestOptions $requestOptions = null ) {
if ( !$this->queryDependencyLinksStore->isEnabled() ) {
return false;
}
// Don't display a reference where the requesting page is
// part of the list that contains queries (suppress self-embedded queries)
foreach ( $this->queryDependencyLinksStore->findEmbeddedQueryIdListBySubject( $semanticData->getSubject() ) as $key => $qid ) {
$requestOptions->addExtraCondition( 's_id!=' . $qid );
}
$referenceLinks = $this->findReferenceLinks( $semanticData->getSubject(), $requestOptions );
$property = new DIProperty(
'_ASK'
);
foreach ( $referenceLinks as $subject ) {
$semanticData->addPropertyObjectValue( $property, DIWikiPage::doUnserialize( $subject ) );
}
return true;
}
/**
* @since 2.5
*
* @param DIWikiPage $subject
* @param integer $limit
* @param integer $offset
*
* @return array
*/
public function findReferenceLinks( DIWikiPage $subject, RequestOptions $requestOptions = null ) {
$queryTargetLinksHashList = $this->queryDependencyLinksStore->findDependencyTargetLinksForSubject(
$subject,
$requestOptions
);
return $queryTargetLinksHashList;
}
/**
* @since 2.5
*
* @param DIProperty $property
* @param DIWikiPage $subject
*
* @return boolean
*/
public function doesRequireFurtherLink( DIProperty $property, DIWikiPage $subject, &$html ) {
if ( $property->getKey() !== '_ASK' ) {
return true;
}
$localURL = \SpecialPage::getSafeTitleFor( 'SearchByProperty' )->getLocalURL(
[
'property' => $property->getLabel(),
'value' => $subject->getTitle()->getPrefixedText()
]
);
$html .= \Html::element(
'a',
[ 'href' => $localURL ],
Message::get( 'smw_browse_more' )
);
// Return false in order to stop the link creation process the replace the
// generate link
return false;
}
}
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