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Re: [e4-dev] how to contribute to toolkit model ?
Hi, Yves,

I understand your viewpoint. I hand your idea of "separation between concept and implementation". And your works at e4 0.9 new features are pretty nice. For the name of "XWT", I guess it is XML-based? However, the strong binding UI to XML is not very suitable. One advantage of EMF is that EMF defined in a higher level, and then the way persistence of EMF could be changed to anything if someone like.

For instance, (assumed) I like JSON or Google protocol buffers more than XML. Did XWT provide this kind of implementation?(or say, is there a full "separation between concept and implementation" for XWT?). If XWT can give me this choice, I think it is acceptable as well:)   


ps: I am not familiar with the XWT, If I am wrong, correct me:)

best regards,
Jin


2009/9/2 <yves.yang@xxxxxxxxxxx>
Hi Jin,

A declarative UI is very important for e4 to simple UI development for
enterprise SI presentation. It provides a separation between concept and
implementation, and unify all UI frameworks and data frameworks (including
EMF) to work together. It should be the foundation of eclipse for all UI
Tools such as VE, MDA like PMF/EGF. So the standardization of declarative
UI in e4 is absolutly necessary for the success of e4.

Without this standard, it will be a masse. We are already in this
situation in Java. There are XUL, Xform, XSWT and others, but no standard.
Who dare to use it? Which tool support it?

Best regards
Yves YANG
> EMF seem higher level technology than XML. EMF provide many advanced tools
> to solve the actual world's problem. A XML file is a data aggregation.
> But,
> it is simple to understand. However  parsing many XMLs or one big XML is
> not
> lightweight absolutely. And so I don't much like the idea of "XML
> Everywhere". But, One question is that, is it possible to make all
> additional technologies as the options for e4? we don't need be forced to
> choose one specific technology?
> best regards,
> Jin Mingjian
> _______________________________________________
> e4-dev mailing list
> e4-dev@xxxxxxxxxxx
> https://dev.eclipse.org/mailman/listinfo/e4-dev
>


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