Yes, you still deal with detached entities (LazyInitializationException, StaleStateException, last writer wins, etc). And worse in my opinion, it makes things different when responding from the latest page vs. a page recovered with the back button, or if another window/tab has made an intervening request. It's this reason that I'm not a huge fan of the optimization in the first place. It's added another layer of complexity to a couple of debugging sessions in the past year or so.
But since suppressing detach() is so easy and exactly satisfies the requirements, I figured it was worth mentioning with a caveat. And I do appreciate your emphasizing the caveat. :) On Sat, May 5, 2012 at 2:31 PM, Jeremy Thomerson <jer...@wickettraining.com>wrote: > On Fri, May 4, 2012 at 6:15 PM, Dan Retzlaff <dretzl...@gmail.com> wrote: > > > I'll mention one hack for which another Wicket user should rightly > > reprimand me. As I mentioned recently, Wicket keeps the most recently > > accessed page is a deserialized state to optimize serving the next > request. > > All components are still detached, but if you override IModel#detach() in > > your LDM and suppress super.detach() then your entity will hang around. > > This has the behavior you describe, since (1) the entity does not need to > > be reloaded on subsequent requests, and since it's object reference is > > transient (2) it goes away as soon as another page is accessed, and (3) > it > > does not get replicated among the cluster. > > > > > Well, you admitted you should be reprimanded.... :) Doesn't that hack > still leave you with lots of problems like stale/detached entities etc? I > definitely would not recommend that hack to someone new who is just trying > to learn Java *and* Wicket. I'd instead say (like you started off with) > "don't prematurely optimize, learn and get experience with the new way of > doing things and make sure you 150% understand them (and everything else > that's going on) before trying to 'fix' things". > > -- > Jeremy Thomerson > http://wickettraining.com > *Need a CMS for Wicket? Use Brix! http://brixcms.org* >
