public function updateTag($tree_id, $tag, $new_tree_id, $new_tag)
{
$searchcriteria = array('tag' => $tag, 'tree_id' => $tree_id);
$sqlParser = clone $this->sqlParser;
$sqlParser->parseCriteria($searchcriteria, false);
$this->parseCriteria($sqlParser, $searchcriteria);
$sqlParser->setFieldValue('tag', $new_tag);
$sqlParser->setFieldValue('tree_id', $new_tree_id);
$query = $sqlParser->getSql(SqlParser::MOD_UPDATE_FIELDS);
$db = $this->getDb();
$res = $db->query($query);
if ($db->isError($res)) {
throw new Exception($res->getDebugInfo());
}
// update treeref
$treeRef = new NewsTreeRef();
$treeRef->updateTag($tree_id, $tag, $new_tree_id, $new_tag);
}
