returning multiple rows from Java user function?

[TDavidHudson]

Is there a way to get a single call to a registered Java user function to return multiple rows? (It seems possible with a created SQL function, but that is of no use to me.)

Regardless of what registered user function call foo() returns, my "SELECT foo();" produces a one-row result bearing a list of results that I would prefer to have be single-result rows. I've tried returning OInternalResultSet, List, List.iterator(), and List.