Did not know about that functionality. Sounds perfect. Then for pages which
must always have bookmarkable URL, we can always extend a base class that
sets itself to unversioned, and for other non-bookmarkable pages we can
still rely on the standard behavior with back button support.
Thanks!
-Jason
Johan Compagner wrote:
>
> Ahh so you are using pages with state. (you use ajax)
> You just don't want to version them? Because for navigation you only use
> bookmarkable pages
>
> Just have one base page that does serVersioned(false)
> then all your pages are unversioned.
>
> johan
>
>
> On 1/24/07, dukejansen <[EMAIL PROTECTED]> wrote:
>>
>>
>> Sorry, guess I misunderstood. Still trying to wrap my head around these
>> concepts.
>>
>> We have an app that is all bookmarkable pages so far, but we may
>> encounter
>> cases without them further down the road.
>>
>> But even for our bookmarkable pages, they may have lots of activity on
>> them
>> which is ajax actions which update the model behind the scenes. The way
>> wicket wires components to their models is still very beneficial, as is
>> the
>> markup inheritance and java-centric development model, etc.
>>
>> As an example, we currently have a search results page which must always
>> include all search criteria in the URL. So right now we have multiple
>> panels
>> with various search criteria. When the user updates the form elements and
>> clicks "search", we let wicket update all the backing models for us, then
>> we
>> assemble a new URL based on the updated models, and redirect to the new
>> URL.
>>
>> This is instead of what might be a more familiar web model where the form
>> data is simply submitted TO the new URL -- instead, we are submitting to
>> wicket, letting wicket do all the updates to our backing state, and then
>> we
>> just construct a new URL to represent the new criteria and redirect to
>> it.
>>
>> I won't deny that this is a bit wacky, but it was the only way I could
>> find
>> to ensure that my search criteria are included in the URL, but we still
>> get
>> wicket's free behavior of updating all model data. The trick is that we
>> are
>> abandoning the updated model data and redirecting to a new page...
>>
>> Not sure how well I've explained this. If there was a way to get wicket
>> to
>> simply use bookmarkable URLs when it does the form submission, I'd be
>> happy
>> to fall back on wicket.
>>
>> Also, FYI, we are using a lot of the Wicket ajax behavior for updating
>> state
>> which does NOT need to be in the URL.
>>
>> -Jason
>>
>>
>> Johan Compagner wrote:
>> >
>> > But i was talking about the settings maxpageversions.
>> > thats not the same thing as how many there can be in the pagemap
>> > That depends on the page map that is used (in 1.3 or 2.0)
>> > AccessStackPageMap uses by default 5 because that is EvictionStrategy:
>> >
>> > private IPageMapEvictionStrategy pageMapEvictionStrategy = new
>> > LeastRecentlyAccessedEvictionStrategy(5);
>> >
>> > The PageMap of the secondlevelcache only has one active in the session.
>> >
>> > But you are making an app where all the urls are again bookmarkable and
>> > you
>> > don't use forms anywhere?
>> > or if you use for (with wicket 1.2) you handle the post in the
>> constructor
>> > of the page itself?
>> > Thats not really where wicket is made for, your throw away pretty much
>> 90%
>> > of what makes wicket.
>> >
>> > johan
>> >
>> >
>> >
>> > On 1/24/07, dukejansen <[EMAIL PROTECTED]> wrote:
>> >>
>> >>
>> >> I think the current method name makes sense, but what is unclear is
>> >> whether
>> >> the CURRENT page is taking up one of the positions. I would think
>> setting
>> >> the max to 1 would ensure that the pagemap contains the current page
>> and
>> >> no
>> >> others. If in fact the current page doesn't need room in the page map,
>> >> then
>> >> I guess 0 would make more sense. I think adding detail to the javadoc
>> >> should
>> >> be sufficient to clear up this ambiguity.
>> >>
>> >>
>> >> Johan Compagner wrote:
>> >> >
>> >> > set the max to 0 then the change list of the version manager will
>> >> really
>> >> > not
>> >> > ntain anything
>> >> >
>> >> > this is the test: (after the new one is added to the list)
>> >> >
>> >> > // If stack is overfull, remove oldest entry
>> >> > if (getVersions() > maxVersions)
>> >> > {
>> >> > expireOldestVersion();
>> >> > }
>> >> >
>> >> > What is logical? max versions is that also counting the current one?
>> >> > What is the best English for this??
>> >> > should we better express it like: setMaxPageUndoBuffer() ??
>> >> >
>> >> > johan
>> >> >
>> >> >
>> >> > On 1/24/07, dukejansen <[EMAIL PROTECTED]> wrote:
>> >> >>
>> >> >>
>> >> >>
>> >> >> Eelco Hillenius wrote:
>> >> >> >
>> >> >> > Well, every user (session) will use memory, correct. But only to
>> a
>> >> >> > certain limit. Wicket 1.2 holds a couple of page/ versions in a
>> >> >> > session, and Wicket 2.0 by default only holds the current one. So
>> >> the
>> >> >> > creation of a fresh instance (e.g. a bookmarkable page) will
>> replace
>> >> >> > another one. Hence, how much memory you'll need is a simple
>> function
>> >> >> > of the number of concurrent sessions times the size of your
>> session
>> >> >> > and page(s) in it.
>> >> >> >
>> >> >>
>> >> >> How can I instruct Wicket not to maintain the multiple versions of
>> a
>> >> >> given
>> >> >> page within the session? I've tried the following but when I dump
>> the
>> >> >> session contents I still see multiple page versions:
>> >> >>
>> >> >> getSessionSettings().setMaxPageMaps(1);
>> >> >> getPageSettings().setMaxPageVersions(1);
>> >> >>
>> >> >> Am I missing the boat on this entirely?
>> >> >>
>> >> >> -Jason
>> >> >> --
>> >> >> View this message in context:
>> >> >>
>> >>
>> http://www.nabble.com/Strategy-to-avoid-new-instances-of-pages-and-panels-tf2566413.html#a8553452
>> >> >> Sent from the Wicket - User mailing list archive at Nabble.com.
>> >> >>
>> >> >>
>> >> >>
>> >>
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