Jboss Seam Context Lookup Erros

[tiagoff]

Hello,

I have a strange problem using the Jboss Seam 2.2.0 GA*
*I tried everything before sent this message to this forum

For explain my problem, i will expose bellow all details.

1) Architecture :

   ViewService - SessionBean - DAO - JPA


2) Classes :

@Name("viewService")
ViewService {
  @In("categorySessionBean")
  private ICategorySessionBean categorySessionBean;
}


@Stateless
@Name("categorySessionBean")
public class CategorySessionBean implements ICategorySessionBean {
  @In(create = true)
  private CategoryDAO categoryDao;
}

@Name("categoryDao")
public class CategoryDAO {Problem : My Action never find the registered Components. @In

  @In(create = true)
  protected EntityManager em;
}


3) Enviroment :

   Eclipse (3.4.2) + Maven + WTP 2.0 + Jboss AS 5.1.0.GA


Well..

Always that I try lookup the SessioBean in ViewService, the Jboss show me a Exception : "@In attribute requires non-null value: ViewService.categorySessionBean"
I discovered that Jboss Seam has a class (org.jboss.seam.init.Initialization) which responsible to startup all component (written @Name) in application.

When this Initialization class is running, this class add a suffix (Initialization.COMPONENT_SUFFIX) in the @Name of my component, so When I try lookup the component (in Context) is not possible, because this suffix was included in the real name.

Someone know what wrong I am doing ? :S

Thanks for your help.

[swd847]

Try:

@Name("viewService")
ViewService {
  @In(value="categorySessionBean",create=true)
  private ICategorySessionBean categorySessionBean;
}

Don't worry about the COMPONENT_SUFFIX stuff, it stores information about the component, not an instance of the component.

[tiagoff]

Thanks Stuart, works !

[cash1981]

Stuart Douglas wrote on Nov 03, 2009 01:46:


Try:

@Name("viewService")
ViewService {
  @In(value="categorySessionBean",create=true)
  private ICategorySessionBean categorySessionBean;
}

Don't worry about the COMPONENT_SUFFIX stuff, it stores information about the component, not an instance of the component.

Hmmmm I thought the correct way of doing it was:

@Name("viewService")
ViewService {
  @In(value="categorySessionBean",create=true)
  private CategorySessionBean categorySessionBean;
}

Meaning, using the interface and not the direct implementation. Guess both will work though...

[swd847]

My example does use the interface, and both ways wont work.

[cash1981]

:O sorry Stuart. I must have suffered by temporary blindness