Linking session state between servlets and EJBs?
- by wilth
Hello,
I have servlets (in a web module) that access stateless EJB beans (in an EJB module). The EJB module is built using SEAM. Users can have different roles and the EJB services check this using Seam's Identity. I also use a customized Authenticator (although this might not be relevant here).
I noticed problems with this approach and I'm suspecting that the session context in the servlets is not "linked" with the session context in the EJB beans.
What I think happens is something like:
User Joe access servlet A and is assigned Session W1. Servlet A calls a login function on an EJB, using the EJB session E1.
Later, user Mary accesses servlet A and is assigned Session W2. When calling the EJBs, however, the EJB session E1 is used and therefore Mary is authenticated as Joe.
What also happens is that when Joe is calling the servlet twice in rapid succession, the same session W1 is used, but two different sessions E1 and E2 in the business layer, causing errors.
I might be wrong in my suspicion, but maybe I'm actually expecting these "sessions" to be linked together while they in fact are not. If this is true, is there any way of achieving this? I could - of course - use stateful beans and save the authentication information in the beans, but this would break the "Identity" concept of Seam (and in general, it would be preferable to be able to use the Session context in my EJB beans).
Any help and pointers are very welcome - thanks!
Technology: EJB3, Seam 2.1.2. The servlets are actually the server-side of a GWT app, although I don't think this matters much. I'm using JBoss 5.
