How to map EventService User ID to my database User ID

[anni...@googlemail.com]

Im relatively new to GWT but I already enjoy your event service very much. My problem at the moment is that I need to map the event service user ID to my database user ID and I can't find a way to generate this mapping. To get my session user I need a normal GWT async request server-side environment (RemoteServiceServlet):

User user = (User) this.getThreadLocalRequest().getSession().getAttribute(WebSession.USER);

Now the question is, how can I link my event listener user ID to this? I have no idea where I can get that.

Thank you very much.