Seam Managed EntityManager is null In Servlet

[sashkanem]

I have Servlet that fetches some entries from database and marshals them in ZipOutputStream, I use

new ContextualHttpServletRequest(request) {
                    @Override
                    public void process() throws Exception {
                        doWork(request, response);
                    }
}.run();

pattern to get seam contexts, then I get my seam component and call method

ViewPaymentsManager manager = (ViewPaymentsManager)Contexts.lookupInStatefulContexts("viewPaymentsManager");
manager.initExportPayments();
List<Payment> payments = manager.getExportPayments();

seam managed entity manager is null inside initExportPayments method. I am sure I have everything right with the entity manager configuration as I use it in all my application, the only problem I have is when I invoke this method from servlet I get nullpointer on entityManager.

I have also tried to wrap servlet call in UserTransaction but with no result.
I can't understand is it possible that only partial seam context is availible in servlet and why?

thanks

[sashkanem]

Environment is Jboss 5.1 and seam 2.2.0.GA and I get EntityManager inside initExportPayments() method with :

(EntityManager)Component.getInstance("em", true);

still can't get what the problem is,

[sashkanem]

Can anyone suggest me how can I get Seam Managed Entity Manager in Servlet (not resource).

Why (EntityManager)Component.getInstance(em, true); returns null, when it works in every other place all over the application?

[arifolth]

are you sure you have any seam components instanciated at all?
I've expirienced the same issue, with ear application, and I got it resolved when relocated seam framework jars properly - inside ear jboss-seam.jar must be in the root, others in lib folber(s).
initially I had them in lib folder(s)...

[sashkanem]

I have already instantiated seam components by the time I call that servlet.
I have ear application with several wars in it, I have seam framework jar in root of ear and seam-ui, seam-jul, etc in lib folders of my wars.

still have not solved the problem

thanks for response

[sashkanem]

i will try to relocate other seam jars to root as well and see what happens

[sashkanem]

Unfortunately I can't relocate seam-ui jar file in root folder as seam framework doesn't starts initialization on first URL invocation, but seam framework jar is in root and I have still this problem

[sashkanem]

Still can't get seam managed EntityManager in Servlet

[sashkanem]

no web ContextFilter and doWork methods solved my problem, the only way I have come up so far is:

EntityManagerFactory emf = (EntityManagerFactory)new InitialContext().lookup("java:/entityManagerFactory");
EntityManager em = emf.createEntityManager();