/**
  * Fetch collection data
  *
  * @param Zend_Db_Select $select            
  * @return array
  */
 protected function _fetchAll($select)
 {
     $select->param('facet', 'true');
     $select->param('facet.field', 'available_category_ids');
     //$product = Mage::getModel('catalog/product');
     $dataObject = $this->getConnection()->fetchAll($select);
     $data = $dataObject->__get('response');
     $facet = $dataObject->__get('facet_counts');
     $this->_facetCategoryCount = $facet->facet_fields->available_category_ids;
     $this->_totalRecords = $data->numFound;
     $fields = null;
     $retData = array();
     foreach ($facet->facet_fields as $name => $value) {
         $this->_statistic[$name] = $value;
     }
     foreach ($data->docs as $row) {
         if (is_null($fields)) {
             $fields = $row->getFieldNames();
         }
         $retRow = array();
         foreach ($fields as $field) {
             $retRow[$field] = $row->{$field};
         }
         $retData[] = $retRow;
     }
     return $retData;
 }