/**
*
* @return \SplFixedArray
*/
public function fetchAllByPrimary($keys)
{
if (empty($keys)) {
return new \SplFixedArray(0);
}
return $this->select()->where($this->_db->quoteIdentifier($this->_primary[0], true) . ' in (' . $this->_db->quoteArray($keys) . ')')->fetchAll();
}