Read the user-role of TomCat in Struts

Hi guys !
I'm developping an application based on tomcat and struts. I have securize my application with tomcat and I want to know if it's possible to get the role name of the user in an struts action class ?
How can I do that ?
Thank you in advance.
Bye

The struts action class has access to the HttpSession object (session). I think the role is stored in there somewhere..
//inside Action
HttpSession session = request.getSession();
String role = (String)session.getAttribute("role");
if(role.equals("admin"){
//do the naughty business
}Correct me if the name of the attribute is not "role", please.

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Read the user-role of TomCat in Struts

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