function doSearch($term = '')
 {
     //force a single term:
     if ($term != '') {
         $this->filters = array(array('t' => 'match', 'v' => $term));
     }
     $mvIndex = new MV_Index();
     $this->results = $mvIndex->doFiltersQuery($this->filters);
     $this->num = $mvIndex->numResults();
     $this->numResultsFound = $mvIndex->numResultsFound();
     if (isset($mvIndex->offset)) {
         $this->offset = $mvIndex->offset;
     }
     if (isset($mvIndex->limit)) {
         $this->limit = $mvIndex->limit;
     }
 }