servlet - session integration

Hi to all.

I am opening a fillable pdf form in a vaadin embedded component and after the user fills the form the whole pdf is posted to a servlet via a submit button action on the pdf. (pdf forms capability of Adobe Acrobat)
Does anyone have an idea about how can I relate the data handled by the servlet with the vaadin application session which shows the pdf in an embedded component in the first place I mean how can I continue the application flow after the form submission and servlet operation for that specific session.

Thanks in advance.


If you are generating the fillable PDF on the fly with user-specific details, just include a read-only field with the unique identifier you need.