Hi,
I am currently migrating my application from Vaadin 6 to Vaadin 7. I wanted to change as less as possible. But now I ran into an issue I can’t solve properly.
In my old application I’ve created a RequestHandler which checked the path in my request and changed the view accordingly. In Vaadin 7 I 've added a RequestHandler (with the mentioned functionality) which I add when initializing the session.
My UI instance has the @PreserveOnRefresh-Flag so that on refreshes the old UI is used.
Now if I change the path of my url, I want to use the same UI which works properly if the prefetch-flag of my Chrome browser is disabled. If it is enabled, the browser sends a request which results in a new UI instance inside the same session. Unfortunately, multipe UI instances inside one session have unwanted side effects.
I don’t have any ideas how to solve the problem. For example, Chrome does not send a header to distinguish between prefetch and normal request. Or am I completely wrong and need a different approach to my problem?
Any help would be appreciated!