I working on an architecture design that has a messaging layer
between my servlets and enterprise beans.  Basically my servlet will publish
a xml message to a MOM product which will call the appropriate enterprise
beans.  My question is how do I package the user identification up into a
string when I create the message so the ejb can verify the user is logged in
and within the appropriate roles?  Once I get the information into the
message, how do I tell Orion who I am before calling the beans?  My users
will be logging in through the jsp page and getting a valid Principal.  

        Thanks,
                John

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