/**
  * Get some {@link XoopsConfigCategory}s
  *
  * @param	object  $criteria   {@link CriteriaElement}
  * @param	bool    $id_as_key  Use the IDs as keys to the array?
  *
  * @return	array   Array of {@link XoopsConfigCategory}s
  */
 function getObjects($criteria = null, $id_as_key = false)
 {
     $ret = array();
     $limit = $start = 0;
     $sql = 'SELECT * FROM ' . $this->db->prefix('configcategory');
     if (isset($criteria) && is_subclass_of($criteria, 'criteriaelement')) {
         $sql .= ' ' . $criteria->renderWhere();
         $sort = !in_array($criteria->getSort(), array('confcat_id', 'confcat_name', 'confcat_order')) ? 'confcat_order' : $criteria->getSort();
         $sql .= ' ORDER BY ' . $sort . ' ' . $criteria->getOrder();
         $limit = $criteria->getLimit();
         $start = $criteria->getStart();
     }
     $result = $this->db->query($sql, $limit, $start);
     if (!$result) {
         return $ret;
     }
     while ($myrow = $this->db->fetchArray($result)) {
         $confcat = new XoopsConfigCategory();
         $confcat->assignVars($myrow, false);
         if (!$id_as_key) {
             $ret[] =& $confcat;
         } else {
             $ret[$myrow['confcat_id']] =& $confcat;
         }
         unset($confcat);
     }
     return $ret;
 }