+ /**
+ * List deleted pages recorded in the archive matching the
+ * given term, using search engine archive.
+ * Returns result wrapper with (ar_namespace, ar_title, count) fields.
+ *
+ * @param string $term Search term
+ * @return ResultWrapper
+ */
+ public static function listPagesBySearch( $term ) {
+ $title = Title::newFromText( $term );
+ if ( $title ) {
+ $ns = $title->getNamespace();
+ $termMain = $title->getText();
+ $termDb = $title->getDBkey();
+ } else {
+ // Prolly won't work too good
+ // @todo handle bare namespace names cleanly?
+ $ns = 0;
+ $termMain = $termDb = $term;
+ }
+
+ // Try search engine first
+ $engine = MediaWikiServices::getInstance()->newSearchEngine();
+ $engine->setLimitOffset( 100 );
+ $engine->setNamespaces( [ $ns ] );
+ $results = $engine->searchArchiveTitle( $termMain );
+ if ( !$results->isOK() ) {
+ $results = [];
+ } else {
+ $results = $results->getValue();
+ }
+
+ if ( !$results ) {
+ // Fall back to regular prefix search
+ return self::listPagesByPrefix( $term );
+ }
+
+ $dbr = wfGetDB( DB_REPLICA );
+ $condTitles = array_unique( array_map( function ( Title $t ) {
+ return $t->getDBkey();
+ }, $results ) );
+ $conds = [
+ 'ar_namespace' => $ns,
+ $dbr->makeList( [ 'ar_title' => $condTitles ], LIST_OR ) . " OR ar_title " .
+ $dbr->buildLike( $termDb, $dbr->anyString() )
+ ];
+
+ return self::listPages( $dbr, $conds );
+ }
+