[jboss-user] [Persistence, JBoss/CMP, Hibernate, Database] - any tutorials for a new JBoss/JPA/Hibernate user

[Atmospherian]

looking for a good starting point to using JBoss/JPA/Hibernate and EJB3.0 if anyone can point me at some good documentation or tutorials, it would be much appreciated.

i already know how to use hibernate, and a little bit about JPA, but what i am really interested in learning is how to use JPA inside of a EJB and use the PersistenceContext and have the entitymanagerfactory be injected. i have tried several times with jboss and glassfish and could not get past a nullpointerexception when trying to persist an object. 

if anyone has experience gettings these technologies to work together peacefully i would love to know how. thanks.

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