Pro: session is a broader scope, so query will happen less often Con: session is serialized so cached value needs to be serializable or transient/detached Con: session is accessed by multiple threads simultaneously, so you need to handle synchronization
Your call. :) On Tue, Jul 24, 2012 at 12:46 PM, Brown, Berlin [GCG-PFS] < berlin.br...@primerica.com> wrote: > Thanks, > I just found some code that uses 'session' as opposed to the request > cycle for caching. Does that matter? Or is the requestcycle preferred? > > getSession().setMetaData > > -----Original Message----- > From: Igor Vaynberg [mailto:igor.vaynb...@gmail.com] > Sent: Tuesday, July 24, 2012 3:20 PM > To: users@wicket.apache.org > Subject: Re: Really slow code > > static class MetaDataKey<MyData> MYDATA=new MetaDateKey<MyData>() {}; > > ^ thats the type-safe singleton key you use to acces the metadata store > > checking for metadata > > MyData data=RequestCycle.get().getMetaData(MYDATA); > > ^ null means none > > writing metadata > > RequestCycle.get().setMetaData(MYDATA, data); > > -igor > > > On Tue, Jul 24, 2012 at 9:26 PM, Brown, Berlin [GCG-PFS] > <berlin.br...@primerica.com> wrote: > > You have any more specifics or an example? Is there a metadata class? > > > > -----Original Message----- > > From: Igor Vaynberg [mailto:igor.vaynb...@gmail.com] > > Sent: Tuesday, July 24, 2012 1:34 PM > > To: users@wicket.apache.org > > Subject: Re: Really slow code > > > > cache it in request cycle's metadata > > > > -igor > > > > On Tue, Jul 24, 2012 at 8:18 PM, Brown, Berlin [GCG-PFS] > > <berlin.br...@primerica.com> wrote: > >> With code like this, I have a model and within the 'load' method, I > >> am > > > >> making a slower call that I don't want to call to get the data again. > >> > >> > >> > >> I may need the result 'bean' for another part of the UI on that > >> particular page and I don't want to make that call again. How can I > >> do this? > >> > >> > >> > >> 1. OnBeforeRender, get a reference to the component and return > > the > >> defaultmodelobject? > >> > >> 2. Use a field reference in my parent component to the result > > set? > >> > >> > >> > >> final LoadableDetachableModel<Bean> modelReqList = new > >> LoadableDetachableModel<Bean>() { > >> > >> public Bean load() { > >> > >> return > >> runReallySlowCodeOnlyWantToCallOnce(); > >> > >> } > >> > >> }; > >> > >> > >> > >> ----- > >> > >> > >> > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org > > For additional commands, e-mail: users-h...@wicket.apache.org > > > > > > > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org > > For additional commands, e-mail: users-h...@wicket.apache.org > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org > For additional commands, e-mail: users-h...@wicket.apache.org > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org > For additional commands, e-mail: users-h...@wicket.apache.org > >
