Exposing an EJB session bean as an EJB on the OSB using the JEJB transport

The JEJB transport allows passing POJOs through the OSB. We can use the JEJB transport on proxy service and expose the proxy service as a remote EJB. For the consumer/client, the proxy service looks like a normal stateless session bean. This will add an additional layer between the client and some existing EJB session beans, which provides additional functionality and agility, such as:

• Replacing the original EJB by something else, that still provides the same interface to the existing clients

• Doing some transformations between the EJB client and the EJB session bean implementation

• Implementing logging

• Using the capabilities of OSB to monitor SLA's

In this recipe, we will implement the same EJB session bean interface on the OSB and just pass-through the messages:

Getting ready

Make sure that the EJB session bean is deployed to the OSB server as shown in the Introduction section of this chapter.

How to do it...

First we have...