Why JPA injection not works on @PersistentUnit
- by Dewfy
Hello colleagues!
It is continues of question ( http://stackoverflow.com/questions/2570976/struts-2-bean-is-not-created )
I'm using struts2 + toplink in my very simple web application under Tomcat.
On the page I would like use iteration tag. That is why I've declared some factory (SomeFactory) that resolves collection of entities (Entity).
Per article: http://download-uk.oracle.com/docs/cd/B32110_01/web.1013/b28221/usclient005.htm#CIHCEHHG
the only thing I need is declaration:
@PersistenceContext(unitName="name_in_persistence_xml")
public class SomeFactory
{
@PersistenceUnit(unitName="name_in_persistence_xml")
EntityManagerFactory emf;
public EntityManager getEntityManager() {
assert(emf != null); //HERE every time it is null
return emf.createEntityManager();
}
public Collection<Entity> getAll()
{
return getEntityManager().createNamedQuery("Entity.findAll").getResultList();
}
}
What is wrong? May be i miss something in web.xml? How to pre-init toplink for web application to allow injection happen?
