[jboss-user] [EJB 3.0] - Re: Inheritence and EJBQL
do-not-reply at jboss.com
Thu Sep 27 15:53:52 EDT 2007
I don't want to be a pest, but could someone at least tell me if what I'm trying to do should work (hence I should try harder to understand what I've misconfigured), or if I should just give up and use my work around (separate queries for each subclass)?
I'm using JBoss AS 4.2.1.GA and Seam 2.0.0.CR1
anonymous wrote : Can EJBQL be used to query polymorphically? I cannot find any examples in the spec or in Bill Burke's EJB3 book, and my attempts are always returning null.
| l = entityManager.createQuery("SELECT s FROM Security s").getResultList();
| Here I'm trying to find all rows of all security subclasses. Even though the database has many such entries, the query always returns null. I can find each subclass independently - eg.:
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