Could not create Component : class is abstract!

[szaccaria]

Hello to all!
I 've a problem with deploy of my web app with seam 2.0B1
I've JBOSS 4.2GA and use .ear project with ejb

I've recived this kind off error:

19:49:21,062 ERROR [wfcoin]] Exception sending context initialized event to listener instance of class org.jboss.seam.servlet.SeamListener
java.lang.RuntimeException: Could not create Component: jwf_clifor
 at org.jboss.seam.init.Initialization.addComponent(Initialization.java:908)
....
....
....
Caused by: java.lang.IllegalArgumentException: component class is abstract: jwf_clifor
 at org.jboss.seam.Component.<init>(Component.java:225)
 at org.jboss.seam.Component.<init>(Component.java:207)
 at org.jboss.seam.init.Initialization.addComponent(Initialization.java:894)
 ... 139 more

after the 'initialization' have install successfully some component
like you can look beside.

19:49:20,922 INFO [Initialization] Installing components...
19:49:20,969 INFO [Component] Component: authenticator, scope: STATELESS, type: STATELESS_SESSION_BEAN, class: com.cesaco.wfcoin.Authenticator, JND
 com.cesaco.wfcoin/Authenticator/local
19:49:21,031 INFO [Component] Component: entityManager, scope: CONVERSATION, type: JAVA_BEAN, class: org.jboss.seam.persistence.ManagedPersistenceC
text
19:49:21,031 INFO [Component] Component: gestione, scope: SESSION, type: STATEFUL_SESSION_BEAN, class: com.cesaco.wf.manager.Gestione, JNDI: com.ce
co.wfcoin/Gestione/local
19:49:21,062 INFO [Component] Component: jwf_cliente, scope: SESSION, type: ENTITY_BEAN, class: com.cesaco.wf.users.Cliente
19:49:21,062 ERROR [wfcoin]] Exception sending context initialized event to listener instance of class org.jboss.seam.servlet.SeamListener

I don't understand what happens
Somebody can help me, please ? :_(

Thanks

[norman.richards]

What does the component that is failing look like?

[szaccaria]

Hallo Norman,
first all thanks thousand for your reply, I had lost the hope!!!

The component that failing is doing the same thing that do the the entity abstract class "User" in the "dvdstore" example of seam 2.0B1.
Could perhaps being a problem in to the hibernate configuration?

Thanks again!

[matt.drees]

The User class in the dvdstore example is not a Seam component - it doesn't have a @Name.

I don't think you can't make an abstract class be a Seam component.

[szaccaria]

You are right!
I have spend two days of job in order to understand it... I'm very newbie in Seam!
Thanks thousand

[alessandro.montanari]

Hey, I have the same problem, but the only solition is to make the class concrete? nothing else?

Thanks!