page.onbeforerender() might work. -igor
On Tue, Apr 27, 2010 at 12:34 PM, Piotr Tarsa <piotr.ta...@gmail.com> wrote: > OK. To simplify question - I want to have method prepareQuery(DataStore > dataStore) in my own IModel subinterface and before page rendering I would > want to execute that method for every model. Where should I do that? Is > there some place in RequestCycle where I could do that? > > 2010/4/26 Piotr Tarsa <piotr.ta...@gmail.com> > >> Hello, >> >> I want to use Wicket with GAE and exploit all GAE features but some >> problems arise. >> >> 1. I'm looking for a good solution for asynchronous simulteanous queries in >> Wicket. DataStore has a functionality of asynchronous queries so I would >> want to be able to fire various queries before rendering anything and then >> return the actual model objects when rendering particular component. I think >> of an Interface (or, better, abstract class) extending IModel with an >> additional method, name it prepareModel() which would run the asynchronous >> query, so getObjet would just wait for the query to finish and then return >> the result (this way total time spend of waiting for DataStore queries will >> be at most equal to slowest query). DataStore entities are organized into >> Entity Groups where there are ancestors and descendants. So sometimes to >> find an object I must first find the ancestor. So I would want to fire the >> prepareModel() for parent components first. >> >> 2. DataStore doesn't support joins internally and it's queries are limited >> to 1000 results (this means that GQL COUNT will never return value higher >> than 1000 even if there's more that 1000 entities that mets the >> requirements). Instead DataStore provides cursors to retrieve more than 1000 >> results and GAE devs recommends using separate sharded counters instead of >> GQL COUNT's (of course if the result would never exceed 1000 then we shall >> use normal GQL COUNT). Are there any components (repeaters) in Wicket that >> supports that approach? >> >> 3. I think that Wicket should be able to store pages from PageMap >> independently. This way we could store pages in separate entities in >> datastore (DataStore doesn't have schemas, one can store entities of any >> form as every kind) so fewer bytes would be transmitted to and from >> DataStore (Http Sessions are kept in MemCache and DiskStore). >> >> 4. How to inject an DataStore object in Models that will be testing >> friendly? >> > --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
