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Lookup.php
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Lookup.php
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<?php
namespace MediaWiki\Extension\Disambiguator;
use MediaWiki\Title\Title;
use Wikimedia\Rdbms\IConnectionProvider;
class Lookup {
public function __construct(
private readonly IConnectionProvider $dbProvider,
) {
}
/**
* Convenience function for testing whether or not a page is a disambiguation page
*
* @param Title $title object of a page
* @param bool $includeRedirects Whether to consider redirects to disambiguations as
* disambiguations.
* @return bool
*/
public function isDisambiguationPage( Title $title, $includeRedirects = true ) {
$res = $this->filterDisambiguationPageIds(
[ $title->getArticleID() ], $includeRedirects );
return (bool)count( $res );
}
/**
* Convenience function for testing whether or not pages are disambiguation pages
*
* @param int[] $pageIds
* @param bool $includeRedirects Whether to consider redirects to disambiguations as
* disambiguations.
* @return int[] The page ids corresponding to pages that are disambiguations
*/
public function filterDisambiguationPageIds(
array $pageIds, $includeRedirects = true
) {
// Don't needlessly check non-existent and special pages
$pageIds = array_filter(
$pageIds,
static function ( $id ) {
return $id > 0;
}
);
$output = [];
if ( $pageIds ) {
$dbr = $this->dbProvider->getReplicaDatabase();
$redirects = [];
$redirectsMap = [];
if ( $includeRedirects ) {
// resolve redirects
$res = $dbr->newSelectQueryBuilder()
->select( [ 'page_id', 'rd_from' ] )
->from( 'page' )
->join( 'redirect', null, [
'rd_namespace=page_namespace',
'rd_title=page_title',
'rd_interwiki' => '',
] )
->where( [ 'rd_from' => $pageIds ] )
->caller( __METHOD__ )
->fetchResultSet();
foreach ( $res as $row ) {
$redirects[] = $row->rd_from;
// Key is the destination page ID, values are the source page IDs
$redirectsMap[$row->page_id][] = $row->rd_from;
}
}
$pageIdsWithRedirects = array_merge( array_keys( $redirectsMap ),
array_diff( $pageIds, $redirects ) );
$res = $dbr->newSelectQueryBuilder()
->select( 'pp_page' )
->from( 'page_props' )
->where( [ 'pp_page' => $pageIdsWithRedirects, 'pp_propname' => 'disambiguation' ] )
->caller( __METHOD__ )
->fetchResultSet();
foreach ( $res as $row ) {
$disambiguationPageId = $row->pp_page;
if ( array_key_exists( $disambiguationPageId, $redirectsMap ) ) {
$output = array_merge( $output, $redirectsMap[$disambiguationPageId] );
}
if ( in_array( $disambiguationPageId, $pageIds ) ) {
$output[] = $disambiguationPageId;
}
}
}
return $output;
}
}

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Sat, Oct 3, 19:40 (2 d, 19 h ago)
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Lookup.php (2 KB)

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