Way to do Outer Joins for orderby's in Collection descriptor?

[Clute, Andrew]

When you define an orderby clause inside a collection descriptor, it
seems to default to doing an INNER JOIN.
 
I know about the ability to do the QueryByCriteria.setPathOuterJoin, but
that is assuming you have a criteria. How do you, or is it even
possible, to set that path for order by statements inside of collection
descriptor?
 
Thanks!
 
-Andrew