[jsr-314-open] [549-AJAX] Keep server-side state ID for AJAX requests.

[Jim Driscoll]

Alexandr's fix is now checked into the impl.  Roger is looking at the spec.

Jim

On 4/29/09 4:18 PM, Ted Goddard wrote:
> +1
>
> We have discussed this as an important distinction for ICEfaces
> applications as well.
>
> Ted.
>
> On 29-Apr-09, at 3:50 PM, Alexandr Smirnov wrote:
>
>> In the case of server-side state saving, implementation of
>> ResponseStateManager saves a new state for an every request,even for a
>> same viewId as previous was, and generates a new value for
>> "javax.faces.ViewState" hidden field. That feature allows JSF to restore
>> proper view state then user returns to previous page by browser "back"
>> button and submit some form from that page again.
>> But that behaviour is incorrect for AJAX requests because in this case
>> browser does not save page in history ( Even if "back" button support
>> for AJAX will be implemented, it could be done by special 'iframe'
>> object only, and does not save page in history anyway ), and old values
>> is only going to garbage. As a result, small view states cache ( which
>> default size is 16 ) could be refilled by values from AJAX requests
>> soon, and browser "back" button support will be broken.
>> Patch to fix that issue have been attached to
>> https://javaserverfaces-spec-public.dev.java.net/issues/show_bug.cgi?id=549
>>