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Stateful Session Bean question

 
gabriele rigamonti
Ranch Hand
Posts: 44
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Hii..

my question:

At pag 80 of EJB 2.0 spec the table specifies that for ejbCreate is

possible to make an access to a Resource manager but ejbCreate is

associated with a unspecified transaction context and this seems in

contrast with the affermation that accessing resorce managers and

enterprise beans is disallowed in the session bean methods for wich the

Container dos not have a meaningful tx context like declared in the specs.

bohh!

Thanks in advance !

Gabriele
 
Navin T
Greenhorn
Posts: 4
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It struck me too in the beginning and i reasoned as below. If someone knows better, then pls let us know

For BMT, the bean can use UserTransaction to start a transaction. So, it can call on resource manager's methods and other enterprise beans.

For CMT, probably the bean can call other enterprise beans which (probably) do not need a transaction and can manage their own transaction. I am not sure what the bean can do with Resource Managers.

Same for a Stateless session bean, it can call getUserTransaction in it's ejbCreate but cannot use any of its methods. So, it can just hold on to it. Its something like "being allowed a cake but it's just too soon to eat it".
 
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