public function execute($request)
 {
     if (!isset($request->limit)) {
         $request->limit = sfConfig::get('app_hits_per_page');
     }
     $this->resource = $this->getRoute()->resource;
     // Check that this isn't the root
     if (!isset($this->resource->parent)) {
         $this->forward404();
     }
     $search = new QubitSearch();
     $query = new Zend_Search_Lucene_Search_Query_Boolean();
     $query->addSubquery(new Zend_Search_Lucene_Search_Query_Term(new Zend_Search_Lucene_Index_Term($this->resource->id, 'parentId')), true);
     if (isset($request->query)) {
         $query = $request->query;
     }
     $query = QubitAcl::searchFilterByRepository($query, 'read');
     $query = QubitAcl::searchFilterDrafts($query);
     $this->pager = new QubitArrayPager();
     $this->pager->hits = $search->getEngine()->getIndex()->find($query);
     $this->pager->setMaxPerPage($request->limit);
     $this->pager->setPage($request->page);
     $ids = array();
     foreach ($this->pager->getResults() as $hit) {
         $ids[] = $hit->getDocument()->id;
     }
     $criteria = new Criteria();
     $criteria->add(QubitInformationObject::ID, $ids, Criteria::IN);
     $this->informationObjects = QubitInformationObject::get($criteria);
 }
 /**
  * Delete an existing document from the index
  *
  * @param integer $id object identifier
  * @param string $language ISO-639-1 code
  * @return void
  */
 public static function deleteByIdLanguage($id, $language)
 {
     // have to use another search object to perform the querying
     $querier = new QubitSearch();
     $query = new Zend_Search_Lucene_Search_Query_MultiTerm();
     $query->addTerm(new Zend_Search_Lucene_Index_Term($id, 'id'), true);
     $query->addTerm(new Zend_Search_Lucene_Index_Term($language, 'culture'), true);
     foreach ($querier->getEngine()->getIndex()->find($query) as $hit) {
         self::getInstance()->getEngine()->getIndex()->delete($hit->id);
     }
 }