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EJBs as an interface  RSS feed

Sanjay Anand
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In an earlier discussion [http://www.javaranch.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic&f=11&t=002344], Tim Holloway suggested that:
One possible resolution to that might be to use the EJBs as an interface and have them defer to a common resource, though that's really just pushing the problem a layer deeper.

Tim was addressing the problem of 'version creep' versus synchronization of business logic across multiple apps.
But we are considering this as a standard since it fits our general model of code management to have a centralized location for all business logic.
How viable is this solution? Does this create any performance or deployment issues? Or does it violate any fundamental J2EE guideline?
I would appreciate any feedback you could give me.
Thank you
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