If you have a ComponentClassTransformWorker that converts the annotation into meta-data on the ComponentModel, then you can just get the correct ComponentModel without loading the page itself.
On Thu, Jul 30, 2009 at 1:35 PM, Robert Zeigler<robe...@scazdl.org> wrote: > > On Jul 29, 2009, at 7/297:00 PM , Thiago H. de Paula Figueiredo wrote: > >> Hi! >> >> I'm working on a security package for Tapestry (to be open-sourced soon) >> and I'm following the typical Dispatcher-based approach. Now I need to check >> if the requested page has a given annotation and read its values. This >> already works. I also want my dispatcher to get the annotation presence and >> values when a page class is live reloaded. >> >> I'm using ComponentClassResolver to map page names (user/edit) to their >> page classes names, get the Class instance and then get the annotation >> values. But, without an application restart, my dispatcher doesn't see the >> new annotation values. I could use ComponentSource.getPage(), but it checks >> out a page instance from the pool and invokes Page.attached(). I suspect >> this hurt perfomance, as the page checkout would be too heavy to be executed >> twice per request (one in the security dispatcher, other to process the page >> render/event itself). >> >> Any suggestions? Am I right in the assumption that using >> PageCache.checkout() to do security checks would hurt performance? >> > > Well, if you use ComponentSource, it will take advantage of the > RequestPageCache, so you'll only checkout the page once per request. Given > that it's the page the user is requesting, it shouldn't really hit > performance any more than just returning the page to the user. If you use > the PagePool directly, you run the risk of checking out multiple copies of > the page per request, and that would definitely have an impact on > performance. > > > Robert > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org > For additional commands, e-mail: users-h...@tapestry.apache.org > > -- Howard M. Lewis Ship Creator of Apache Tapestry Director of Open Source Technology at Formos --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
