From: Michael Bouschen <Michael.Bouschen_at_Sun.COM>
Date: Mon, 13 Nov 2006 17:46:34 +0100

Hi Tom, hi Jielin,

I fixed issue 1464 "JPQL: NPE for undefined variable in JOIN clause":
https://glassfish.dev.java.net/issues/show_bug.cgi?id=1464

The query compiler runs into an NPE in case the JOIN clause uses an
identification variable that is not declared. E.g. the following query
declares an variable c, but uses an variable d in the JOIN clause:
SELECT c FROM Customer c JOIN d.orders o.
The bug is in an internal compiler helper class TypeHelperImpl when
accessing the persistence metadata.

You find the source and test changes attached.

Thanks!

Regards Michael