ResultSetMetaData.isNullable(i) not working?

Hi all,

has someone else tried to use ResultSetMetaData.isNullable(i) to determine
if a column is nullable?

It seems that the driver always returns columnNullableUnknown - independently 
if the datasource is a table or view and independ on actual settings.

I can see that it is almost impossible to determine that for columns of views 
- or does someone know the trick?

But at least for tables it should work...

Guido