Hi all,
I have struggled some time with a problem I get when trying to persist some
objects. I use the exact same setup as jboss-seam-jpa running om tomcat6
without jboss embedded. (JavaBean an POJO:s).
Persisting an object with
| @Name("register")
| public class RegisterAction {
| @In
| private EntityManager em;
|
| public void register() {
| em.persist(someObject);
| }
| }
|
works perfectly, even without the @Transactional annotation. However this:
| @Name("register")
| public class RegisterAction {
| @In
| private MyService service;
|
| public void register() {
| service.register(someObject);
| }
| }
|
| @Name("service")
| @AutoCreate
| public class MyService {
| @In
| private EntityManager em;
|
| public void register(Object someObject) {
| em.persist(someObject);
| }
| }
|
does not work(and I have tried using @Transactional on 'register' and
MyService). I get a "Transaction failed" in my jsf h:messages, but apart from
that, there is no error message what so ever.
I guess I have missed something fundamental, especially when I read this in the
Seam doc:
anonymous wrote : 25.3... Seam JavaBean components do not provide declarative
transaction demarcation like session beans do. You could manage your
transactions manually using the JTA UserTransaction or declaratively using
Seam's @Transactional annotation. But most applications will just use Seam
managed transactions when using Hibernate with JavaBeans.
anonymous wrote : 1.2.1.2... Our session bean action listener performs the
business and persistence logic for our mini-application. In more complex
applications, we might need to layer the code and refactor persistence logic
into a dedicated data access component. That's perfectly trivial to do. But
notice that Seam does not force you into any particular strategy for
application layering.
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