User-defined types

Hi,
is there any way to operate with User-defined types ? When I try to select
column of user-defined type, I've got an exception "No class found for
...". As I understand, interface SQLData and method setTypeData() still
not implemented... Any idea ?
Thanks.


                Alexey Slynko
                Stack Technology
                E-mail: slynko@stack.net
                Tel.: 939-85-86 (130)