/**
  * Triggers commit and optimize xml update messages
  * @param boolean $bOptimize optimize index or not
  * @return object Always null
  */
 public function commitAndOptimize($bOptimize = false, $bWaitSearcher = true, $bSoftCommit = false, $bExpungeDeletes = true)
 {
     // http://wiki.apache.org/solr/UpdateXmlMessages#A.22commit.22_and_.22optimize.22
     try {
         $this->oSearchService->commit($bWaitSearcher, $bSoftCommit, $bExpungeDeletes, 60);
         // Don't optimize on every call it is very expensive
         if ($bOptimize === true) {
             $this->oSearchService->optimize(true);
         }
     } catch (Exception $e) {
     }
 }
 public function execute()
 {
     $params = $this->extractRequestParams();
     //HINT: includes/api/ApiFeedContributions.php
     //HINT: includes/api/ApiFeedWatchlist.php
     global $wgSitename, $wgLanguageCode, $wgEnableOpenSearchSuggest, $wgSearchSuggestCacheExpiry, $wgFeed, $wgFeedClasses;
     if (!$wgFeed) {
         $this->dieUsage('Syndication feeds are not available', 'feed-unavailable');
     }
     if (!isset($wgFeedClasses[$params['feedformat']])) {
         $this->dieUsage('Invalid subscription feed type', 'feed-invalid');
     }
     $msg = wfMessage('specialextendedsearch')->inContentLanguage()->text();
     $feedTitle = $wgSitename . ' - ' . $msg . ' [' . $wgLanguageCode . ']';
     $feedUrl = SpecialPage::getTitleFor('SpecialExtendedSearch')->getFullURL();
     $feed = new $wgFeedClasses[$params['feedformat']]($feedTitle, htmlspecialchars($msg), $feedUrl);
     $feedItems = array();
     try {
         $oSearchService = SearchService::getInstance();
         $oSearchRequest = new BsSearchRequest('apifeed');
         $oSearchRequestMW = new SearchRequestMW($oSearchRequest);
         $oSearchOptions = new SearchOptions($oSearchRequestMW);
         // Prepare search input
         $sSearchString = $params['q'];
         $sSearchString = urldecode($sSearchString);
         $sSearchString = BsSearchService::preprocessSearchInput($sSearchString);
         $sSearchString = BsSearchService::sanitzeSearchString($sSearchString);
         // Make solr query suitable for autocomplete
         $aSolrQuery = $oSearchOptions->getSolrQuery();
         //$sSearchString = 'titleWord:("'.$params['q'].'") OR titleWord:('.$params['q'].') OR titleReverse:(*'.$params['q'].'*) OR textWord:("'.$params['q'].'") OR textWord:('.$params['q'].') OR textReverse:(*'.$params['q'].'*)';
         $sSearchString = 'titleWord:(' . $sSearchString . ') OR titleWord:(' . $sSearchString . '*) OR titleReverse:(*' . $sSearchString . '*) OR textWord:(' . $sSearchString . ') OR textReverse:(*' . $sSearchString . '*)';
         $aSearchOptions = $aSolrQuery['searchOptions'];
         $aSearchOptions['facet'] = 'off';
         $aSearchOptions['hl'] = 'on';
         $aSearchOptions['hl.fl'] = 'textWord, textReverse';
         $aSearchOptions['hl.snippets'] = 3;
         // params are query, offset, limit, params
         $aHits = $oSearchService->search($sSearchString, 0, 25, $aSearchOptions);
         foreach ($aHits->response->docs as $doc) {
             if ($doc->namespace != '999') {
                 $oTitle = Title::makeTitle($doc->namespace, $doc->title);
             } else {
                 continue;
             }
             if (!$oTitle->userCan('read')) {
                 continue;
             }
             $oHighlightData = $aHits->highlighting->{$doc->uid};
             if (isset($oHighlightData->textWord)) {
                 $aHighlightsnippets = $oHighlightData->textWord;
             } else {
                 if (isset($oHighlightData->textReverse)) {
                     $aHighlightsnippets = $oHighlightData->textReverse;
                 }
             }
             $sTextFragment = '';
             foreach ($aHighlightsnippets as $sFrag) {
                 $sFrag = strip_tags($sFrag, '<em>');
                 if (empty($sFrag)) {
                     continue;
                 }
                 $sTextFragment .= "{$sFrag}<br />";
             }
             $feedItems[] = new FeedItem($doc->title, $sTextFragment, $oTitle->getFullURL());
         }
     } catch (Exception $e) {
         $this->dieUsage($e->getMessage(), 'feed-invalid');
     }
     ApiFormatFeedWrapper::setResult($this->getResult(), $feed, $feedItems);
 }