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Session bean inheritance  RSS feed

 
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I have read the EJB spec which says

A session bean class MUST NOT have a superclass that is itself a session bean class.



However EJB3 in action simply states that if you inherit another session bean, the @Stateful, @Stateless annotations are ignored. Rest of the callback methods, interceptor methods are inherited by the subclass bean.

What is true ? Is it allowed to inherit a session bean by another session bean ? Does 'MUST NOT' mean that in general it should be avoided ?
 
It is sorta covered in the JavaRanch Style Guide.
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