[jboss-user] [EJB3] - @EJB and Class Hierarchy

[Markus Lutum]

Markus Lutum [http://community.jboss.org/people/mclu] created the discussion

"@EJB and Class Hierarchy"

To view the discussion, visit: http://community.jboss.org/message/600013#600013

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Hi!

Currently I am migrating an application from AS 4.2.3 to AS 6.0.0

In the old system we have a hirarchy like:

@Stateless(name = "CarrierUC")
public class CarrierUCBean extends AbstractUC implements CarrierUC {
....
}

and a subclass like

@Stateless(name = "PersonUC")
public class PersonUCBean extends CarrierUCBean implements PersonUC {
....

}

Other Session Beans inject them using 

@EJB CarrierUC m_carrierUC;
or 
@EJB PersonUC m_personUC;


Now with Jboss 6 the system could not deploy my beans because he mention that the injected CarrierUC is not unique and I should use beanName.
Message:
Caused by: java.lang.RuntimeException: Specified reference [EJB Reference: beanInterface 'com.XXX.CarrierUC', beanName 'null', mappedName 'null', lookupName 'null', owning unit 'ComponentDeploymentContext at 17671586{org.jboss.metadata.ejb.jboss.JBossEnterpriseBeanMetaData.MyClientService}'] was matched by more than one EJB: [org.jboss.metadata.ejb.jboss.JBossSessionBean31MetaData at 1e4488c3{PersonUC}, org.jboss.metadata.ejb.jboss.JBossSessionBean31MetaData at 81412b66{CarrierUC}, org.jboss.metadata.ejb.jboss.JBossSessionBean31MetaData at 12e9e9a{VehicleUC}].  Specify beanName explicitly or ensure beanInterface is unique.


OK, when I use
@EJB(beanName="CarrierUC") CarrierUC m_carrierUC;
it works.

Do I really have to change ALL my injection lines where I have session bean class hierarchies or is there a way to configure the old behaviour?

Thx from Germany
Markus
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