Nebulous Null Pointer

[mduffy_lists]

I am getting a null pointer exception at start up (using the latest EJB 3.0 Preview Release). I know that it means there is something wrong in myejb.ejb3; however, I get this very long stack trace that has all kinds of references to JBoss and Hibernate, but no reference to the cause of the problem in myejb.ejb3.

Does anyone have any guidance on ow to debug this?

Here are the first few lines of the stack trace.

01:00:18,045 ERROR [Ejb3Module] Starting failed
jboss.j2ee:service=EJB3,module=myejb.ejb3
java.lang.NullPointerException
at org.jboss.ejb3.entity.EntityToHibernateXml
.getAnnotatedProperty(EntityToHibernateXml.java:305)
at org.jboss.ejb3.entity.EntityToHibernateXml
.getAnnotatedProperty(EntityToHibernateXml.java:300)
at org.jboss.ejb3.entity.EntityToHibernateXml
.handleBasicClass(EntityToHibernateXml.java:1815)
at org.jboss.ejb3.entity.EntityToHibernateXml
.handleClass(EntityToHibernateXml.java:1431)
at org.jboss.ejb3.entity.EntityToHibernateXml
.convert(EntityToHibernateXml.java:134)
at org.jboss.ejb3.entity.HibernateSessionFactory
.createSessionFactory(HibernateSessionFactory.java:144)

[bill.burke]

are you inheriting from an abstract base class or base class that isn't annotated with @Entity? I think I see the problem.

[mduffy_lists]

Absolutely correct. I was inheriting from a base class that was not annotated with @Entity.

Thankfully, I did not have to specify a table name in the base class, which is used for all my Entity Beans (the class has values common to all tables: created, updated, updatedBy, and datasource).

Thanks again.

Mike

[bill.burke]

Can you log a bug under the EJB 3 module on JIRA?

http://jira.jboss.com/jira/secure/BrowseProject.jspa?id=10021

or if that doesn't work, navigate from jira.jboss.com

Thanks,

Bill

[mduffy_lists]

Are you sure it's a bug? The spec does not require funtionality for inheritance from an unannotated class.

Mike