[ovirt-devel] GWT vs. Java

[Vojtech Szocs]

----- Original Message -----
> From: "Martin Betak" <mbetak at redhat.com>
> To: "Vojtech Szocs" <vszocs at redhat.com>
> Cc: devel at ovirt.org, "Einav Cohen" <ecohen at redhat.com>, "Roy Golan" <rgolan at redhat.com>
> Sent: Monday, October 6, 2014 11:36:14 AM
> Subject: Re: GWT vs. Java
> 
> ----- Original Message -----
> > From: "Vojtech Szocs" <vszocs at redhat.com>
> > To: devel at ovirt.org
> > Cc: "Einav Cohen" <ecohen at redhat.com>, "Roy Golan" <rgolan at redhat.com>,
> > "Martin Betak" <mbetak at redhat.com>
> > Sent: Friday, October 3, 2014 3:29:15 PM
> > Subject: GWT vs. Java
> > 
> > Hi guys,
> > 
> > I've had a discussion with Roy about GWT vs. Java plans,
> > he asked me to share this information, so here we go.
> > 
> > GWT 2.6
> > =======
> > - patch pending merge: http://gerrit.ovirt.org/#/c/32135/
> > - support for Java 7 language syntax like <> operator etc.
> > - once patch ^^ is merged, we can consolidate Java language
> >   compliance for whole Engine -> both frontend and backend
> >   can use Java 7 (yey!)
> > 
> > GWT 2.7
> > =======
> > - planned support for *only* Java 8 language syntax like
> >   lambdas etc. but *without* emulating new Java 8 APIs like
> >   streams etc. (Java 8 API emulation should come in GWT 3.0)
> > 
> > Likely, GWT 2.7 will remove GWT deRPC implementation on which
> > we currently rely on. (@Martin, can you please share details?)
> 
> Following the GWT source code, the support for deprecated deRPC
> was removed in commit f18e4e23898d3e090e0fae1fed2abd97e78b62e7
> on master branch which will be almost certainly included in the 2.7 release.

Indeed, direct-eval RPC aka deRPC was removed from GWT 2.7-SNAPSHOT:

  https://gwt.googlesource.com/gwt/+/f18e4e23898d3e090e0fae1fed2abd97e78b62e7

We'll stick with GWT 2.6 until we move UI to REST API.

> 
> > 
> > This means that until we move UI to REST API, we can't upgrade
> > post GWT 2.6, so this will put more pressure to work on oVirtJS
> > project in consequence.
> > 
> > GWT 3.0
> > =======
> > - ETA early next year?
> > - planned to fully support Java 8 -> both language and APIs
> > - one of key highlights is better integration with JavaScript,
> >   which fits the scenario where GWT "application" is one module
> >   that's part of bigger application (hybrid approach)
> > 
> > Regards,
> > Vojtech
> > 
> 
>