CIBlockDocumentWebdav::UnlockDocument

static function UnlockDocument($documentId, $workflowId)
{
	$documentId = intval($documentId);
	if ($documentId <= 0)
		throw new CBPArgumentNullException("documentId");

	$diskId = self::processGetDiskIdByDocId($documentId);
	if($diskId !== null)
	{
		return self::proxyToDisk(__FUNCTION__, array($diskId, $workflowId));
	}

	global $DB;
	$strSql = "
		SELECT * FROM b_iblock_element_lock
		WHERE IBLOCK_ELEMENT_ID = ".intval($documentId)."
	";
	$z = $DB->Query($strSql, false, "FILE: ".__FILE__."
LINE: ".__LINE__);
	if($z->Fetch())
	{
		$strSql = "
			DELETE FROM b_iblock_element_lock
			WHERE IBLOCK_ELEMENT_ID = ".intval($documentId)."
			AND (LOCKED_BY = '".$DB->ForSQL($workflowId, 32)."' OR '".$DB->ForSQL($workflowId, 32)."' = '')
		";
		$z = $DB->Query($strSql, false, "FILE: ".__FILE__."
LINE: ".__LINE__);
		$result = $z->AffectedRowsCount();
	}
	else
	{//Success unlock when there is no locks at all
		$result = 1;
	}

	if ($result > 0)
	{
		$db_events = GetModuleEvents("webdav", "CIBlockDocumentWebdav_OnUnlockDocument");
		while ($arEvent = $db_events->Fetch())
			ExecuteModuleEventEx($arEvent, array("webdav", "CIBlockDocumentWebdav", $documentId));
	}

	return $result > 0;
}