DB_DataObject - Brakcets with Where Add

Hi When I use the functions: $sql1 = DB_DataObject::factory(TBL_SMS_CENTER_STATIC); $sql1->whereAdd($sql1->__table . '.service_id = '. $_GET['service_id']);

        if (isset($_SESSION['view_user'])) {
            $sql1->whereAdd($table . '.user_id = ' . $_SESSION['view_user'] .'(');
        } else {
            $sql1->whereAdd($table . '.user_id = ' . $_SESSION['admin_user_id']);

            if (count($_SESSION['admin_user_id_child']) > 1) {
                foreach ($_SESSION['admin_user_id_child'] AS $row_sub) {
                    if ($_SESSION['admin_user_id'] != $row_sub) {
                        $sql1->whereAdd($table . '.user_id =  ' . $row_sub, 'OR');
                    }
                }
            }
        }

I get the following SQL make up - now the issue is the brackets with the OR SELECT * FROM sms_static WHERE ( sms_static.service_id = 1 ) AND (sms_static.user_id = 1 ) OR ( sms_static.user_id = 2 ) OR ( sms_static.user_id = 24 ) I really want SELECT * FROM sms_static WHERE ( sms_static.service_id = 1 ) AND (sms_static.user_id = 1 OR sms_static.user_id = 2 OR sms_static.user_id = 24) This way I get the correct effect, of not selecting all the items based on the serivce id or the user ids - I want serviceID that pertains to these users so someone cannot hack in a service id. Is there any way to add this logic in or do I need to hack it and add brackets in myself - if so how do I do that: I can hack it by $sql1 = DB_DataObject::factory(TBL_SMS_CENTER_STATIC); $sql1->whereAdd($sql1->__table . '.service_id = '. $_GET['service_id']);

        if (isset($_SESSION['view_user'])) {
            $sql1->whereAdd('(' . $table . '.user_id = ' . $_SESSION['view_user'] .'(');
        } else {
            $sql1->whereAdd('(' . $table . '.user_id = ' . $_SESSION['admin_user_id']);

            if (count($_SESSION['admin_user_id_child']) > 1) {
                foreach ($_SESSION['admin_user_id_child'] AS $row_sub) {
                    if ($_SESSION['admin_user_id'] != $row_sub) {
                        $sql1->whereAdd($table . '.user_id =  ' . $row_sub, 'OR');
                    }
                }

                $sql1->whereAdd('1 )');
            }
        }

which gives: SELECT * FROM sms_static WHERE ( sms_static.service_id = 1 ) AND ( (sms_static.user_id = 1 ) OR ( sms_static.user_id = 2 ) OR ( sms_static.user_id = 24 ) AND ( 1 ) ) Cheers Ian