/**
*
* gets the last update, either of the vocabulary or the history
*
* @return integer
*/
public static function getLastUpdateDate($id)
{
$vocab = self::retrieveByPK($id);
if ($vocab) {
$lastVocabUpdate = $vocab->getLastUpdated(null);
}
$lastHistoryUpdate = ConceptPropertyHistoryPeer::getLastUpdateForVocab($id, null);
$result = max(array($lastHistoryUpdate, $lastVocabUpdate));
return $result;
}
