I was having a hard time getting <jar-file> to work in persistence.xml, so wondering if it has been implemented. I did not see any test for it in Hibernate EntityManager.

Basically I have a domain.jar which contains my annotated domain entities. I have two other jars - application.jar and test.jar, that try to access the entities in domain.jar. These two jars package their own persistence.xml files which use <jar-file> to reference domain.jar:



However I get the following exception:

java.lang.IllegalArgumentException: Cannot parse persistence unit from class path resource [.../persistence.xml]
caused by
java.io.FileNotFoundException: class path resource [domain.jar] cannot be resolved to URL because it does not exist

I know domain.jar is in the class path. Should I be specifying it differently? Is this supposed to work in a J2SE environment or is this strictly for JavaEE environment>

Thanks.
Naresh

Digging in more deeply. I definitely know that my domain.jar is in the classpath. Adding more logging, I see the following warning:



I hope this just means that hibernate is first looking for an exploded jar. If it doesn't find it, it will look for a packaged jar. In any case, I don't think it is finding/scanning domain.jar.

However, I was able to get hibernate to recognize my entity by replacing <jar-file> with a <class> element:



So, it appears that <jar-file> is not working. Can someone more knowledgeable than me comment on this? Should I log a JIRA with my sample code?

Thanks.
Naresh