How can I integrate JSF with REST?

Question

I have created a REST service for uploading files. Because of various requirements, I cannot integrate that into the JSF lifecycle. Amongst others:

• JQuery handles the POST and expects a JSON response which I don't feel good doing from a bean method.
• Fileupload plugin does multiple concurrent file POST s, which AFAIK is not possible (by default) JSF behaviour as event's will be queued.

I have a few options in mind, but I would like to be as intrusive as possible. The ones I have examined so far are:

• Using JQuery, populate a hidden field with the location of the files and process them in the ActionListener
• Same as above, but also call the ActionListener from JQuery
• Store data in the session (since I can access it, from my REST service)
• Use an @EJB queue service to pass the data to the bean (@Inject' service to bothbeanandREST` service)

Alternatively, is there a way to actually fetch by @ViewScoped bean given that I have the viewstate form field?