Multiple implementations of the same business interface

[mwoelke]

Suppose a scenario where a local interface is implemented by two different session beans SLSB1 and SLSB2. SLSB2 is a subclass of SLSB1 overriding some of the methods according to customer demands. How can I configure my EAR to inject a specific implementation of the interface? Is it possible to do that without changing the bean which is injected with the instance?

Any input is appreciated.

Thanx in advance.

[jaikiran]

How can I configure my EAR to inject a specific implementation of the interface?

You can use the beanName attribute of the @EJB

@EJB (beanName="SLSB2")
private SLSBInterface bean;

SLSB2 is a subclass of SLSB1

That's actually not allowed as per the spec:

EJB3 spec, section 4.6.2 - "Optionally", bullet point 6

A session bean class must not have a superclass that is itself a session bean class.

[mwoelke]

I see. Thanks a lot for this quick response.

Regards, Milan