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EMF+GWT status? [message #425917]

Thu, 11 December 2008 20:10

Jason Henriksen

Messages: 231
Registered: July 2009

Senior Member

Hi All,

I'm curious if anything ever happened with getting EMF objects to be
usable in GWT. Last time I looked the EMF generated java code had
things in it that GWT couldn't translate to JavaScript.

I was thinking about trying to mod the GWT compiler to ignore things
with @NoJS on them and then make my JET template add the @NoJS
annotation to everything that in my impl wasn't basic Pojo. I would
lose the notifications aspect of my EMF objects while in JavaScript, but
I could get all the benefits of EMF in the backend and not have to copy
data in order to display those objects in the front end. Certainly not
as good as EMF in SWT, but still very helpful if I'm in GWT.

Does that sound useful / interesting? Have you found any other
solutions that I'm not aware of?

Thanks much!

Jason Henriksen

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Re: EMF+GWT status? [message #425921 is a reply to message #425917]

Thu, 11 December 2008 20:58

Thomas Schindl

Messages: 6651
Registered: July 2009

Senior Member

Hi,

Well I've once had a running version of EMF in GWT. The most work is to
get Ecore-Ported because it uses internally some classes not available
in GWT but after a week of patching I had a working version [1].

This was sometimes in between GWT-1.5 dev cycle but I think they removed
many classes in the final release. Still having a EMF-Core port
available for GWT is a plan item of UFaceKit.

What do you think GWT-compiler can't understand? Infact EMF is quite
easy because it doesn't need reflection which is not available at the
GWT-Level.

One more note on all this is that UFaceKit comes with a very very light
weight model technology named UBean [3] whose API is modeled after the
one from EObject.

Tom

[1]https://bugs.eclipse.org/bugs/show_bug.cgi?id=209434
[2]http://www.eclipse.org/proposals/ufacekit/
[3] http://uface.googlecode.com/svn/trunk/proper/org.ufacekit/or g.ufacekit.core/org.ufacekit.core.ubean/

jason henriksen schrieb:
> Hi All,
>
> I'm curious if anything ever happened with getting EMF objects to be
> usable in GWT. Last time I looked the EMF generated java code had
> things in it that GWT couldn't translate to JavaScript.
>
> I was thinking about trying to mod the GWT compiler to ignore things
> with @NoJS on them and then make my JET template add the @NoJS
> annotation to everything that in my impl wasn't basic Pojo. I would
> lose the notifications aspect of my EMF objects while in JavaScript, but
> I could get all the benefits of EMF in the backend and not have to copy
> data in order to display those objects in the front end. Certainly not
> as good as EMF in SWT, but still very helpful if I'm in GWT.
>
> Does that sound useful / interesting? Have you found any other
> solutions that I'm not aware of?
>
> Thanks much!
>
> Jason Henriksen

--
B e s t S o l u t i o n . at
------------------------------------------------------------ --------
Tom Schindl JFace-Committer
------------------------------------------------------------ --------

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