result = con.query(user, xpath, howmany, start, parameters);
result = con.query(user, xqueryStr, howmany, start, parameters);
    public String query(User user, String xpath, int howmany, int start,            Hashtable parameters) throws EXistException,            PermissionDeniedException {        RpcConnection con = pool.get();        String result = null;        try {            result = con.query(user, xpath, howmany, start, parameters);            return result;        } catch (Exception e) {            handleException(e);            return null;        } finally {            pool.release(con);        }    }