ESB : Is it possible to connect to a stateless EJB from ESB

Dear Gurus,
I want my ESB to talk to a stateless session bean, without wrapping the stateless session bean as a web service.
Kindly let me know if it is possible to do so.
Thanks in advance

I think the question is not whether it's technically possible using some sort of intermediate protocol, standard or technology -it is using WSIF, JAX-WS, JMS/AQ- but more the question what protocols are supported.
The ESB developer's guide states:
The ESB Server supports multiple protocol bindings including
HTTP/SOAP, JMS, JCA, WSIF, and Java that ensure guaranteed, reliable message delivery using synchronous/asynchronous, request/reply or publish/subscribe models. However, the ESB Server does not support Remote Method Invocation (RMI).
and
Oracle Enterprise Service Bus utilizes WSIF bindings in a WSDL document to
perform native Java calls to external java interfaces. WSIF is also used internally
by the JCA framework.
So invoking EJB's through RMI is not natively supported by Oracle ESB.
For an example on how to use WSIF to invoke Java in ESB see: http://www.oracle.com/technology/products/integration/esb/files/esbsamples.zip
BEA AquaLogic Service Bus supports native RMI invocations: http://e-docs.bea.com/alsb/docs261/userguide/ejbtransport.html
Regards, Ronald

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