From: Bill Burke <bburke_at_redhat.com>
Date: Tue, 05 Feb 2013 08:37:55 -0500

Javadoc says for AsyncResponse.resume(Throwable)

      * For the provided throwable same rules apply as for an exception
thrown
      * by a {_at_link javax.ws.rs.HttpMethod JAX-RS resource method}.
      * The processing of the throwable by JAX-RS framework follows the
same path
      * as it would for any exception thrown by a JAX-RS resource method.


So, if the Throwable is a WebApplicationException, or there is a mapper,
then resume can send a response. If neither of those conditions are
met, then return false?

-- 
Bill Burke
JBoss, a division of Red Hat
http://bill.burkecentral.com