To give you an idea of where I am coming from, here is my understanding of the world:
*Metadata Systems, comprising Models and Controllers* xforms, Ian's databinding system, Arthur's validation system, gwt team's upcoming proposal for data management: All part of the larger metadata, binding, code generation class of systems. Hopefully all of these can eventually use the same basic concepts and it going to be a huge undertaking to get it right. In fact, so huge of one that the gwt team has decided to duck for now and are trying very hard not to get involved in these discusions at the current time. *Widget bridge classes, part of the application's view.* Classes used to expose the application's view to the meta data systems. *HasValue*: Provides the bridge between the metadata model and the world of widgets. From the meta data system's point of view it has some way of creating/linking with instances of HasValue<String>, HasValue<Boolean>, HasValue<Date>, etc.. >From the widgets point of view, we have a whole bunch of text boxes, text areas, date pickers, etc. on the page. Accordingly, HasValue should only ever be used for simple leaf types on leaf widgets. *EventHandlers*: Provides a way for the meta data system controllers to add callbacks to react to widget changes. > > -Ray > > > > On Wed, Oct 8, 2008 at 7:15 AM, Ray Ryan <[EMAIL PROTECTED]> wrote: > > We all seem to be talking about data binding and validation a lot, and > some > > of us are even implementing code about it. We on the GWT team hear the > need > > and feel it ourselves. > > > > We have some notions of how we'd like to tackle this in a way that blends > > seamlessly with the rest of GWT, and are looking to start design and > > implementation in earnest before the year is out. This makes it unlikely > > that we'll accept core or incubator patches that implement such a system. > > That said, we don't want to shoot down the excellent work that's being > done! > > If you have a system that's shaping up to meet your needs and that you > want > > to share with the GWT community, please do! Set up a Google Code > project, > > announce it here, embarrass us by shipping first and attracting a user > > base. We'll probably steal from you shamelessly and ask for your help as > our > > own system takes shape. > > I hope this doesn't ruffle any feathers, and that you'll understand why > we > > haven't been as responsive on some of these threads as we should have > been. > > Thanks, > > rjrjr > > > > > > > > > > > > > -- "There are only 10 types of people in the world: Those who understand binary, and those who don't" --~--~---------~--~----~------------~-------~--~----~ http://groups.google.com/group/Google-Web-Toolkit-Contributors -~----------~----~----~----~------~----~------~--~---
