Re: Roadmap Question for GWT 3.0

Thanks Thomas,

For my own use I'm going to keep a list of what I think I know http://salk31.blogspot.co.uk/2015/10/gwt-30-migration.html corrections welcome.

I can see why they want to reduce the scope of GWT and integrate (not build) but is such a high quality complete package in 2.7 it is a bit scary. I've had to use BroadVision, Vignette, Struts 1, Cocoon, Wicket... in the past and GWT felt like finally web development had grown up.

On Friday, October 16, 2015 at 5:44:25 PM UTC+1, Thomas Broyer wrote:

I think nobody has such information yet; not even Google who are pushing for the change. They do have many apps that use widgets and RPC today (example: Google Groups, the exact app I'm typing this message into) and will need to come up with a migration path for those apps too.

On Friday, October 16, 2015 at 2:19:02 PM UTC+2, salk31 wrote:

Is there a guide somewhere of migration path to 3.0 per feature? 

I've been trying to follow these threads but I'm still not sure on the future of things like RequestFactory and Editor. They heavily depend on GWT.create and the latter depends on Widgets, are they really going away?

We have a large-ish app so want to start worrying about migration even if we are long way off.

Cheers

Sam

On Tuesday, July 28, 2015 at 10:01:21 AM UTC+1, Jens wrote:

Where can I read that GWT RPC and widget system will be dropped with GWT 3.0? Is there a presentation / doc online?

And what does it mean that GWT.create will be dropped?

And: really dropped or set as deprecated?

GWT 3.0 drops support for JSNI and GWT.create(). JSNI will be replaced with JsInterop and GWT.create() will be replaced with either annotation processors (generate-with case) or dependency injection/System.getProperty (replace-with case). So all library code of GWT which depends on those two features need to be ported to the new GWT compiler. 

Widget is probably doable but GWT-RPC might be really difficult (if not impossible) because the current GWT-RPC generator asks questions like "give me all types that implement XYZ" which an annotation processor can only hardly answer (if at all). GWT-RPC might be portable if some refactoring in the app using GWT-RPC is acceptable (e.g. slapping annotations on DTOs instead of marking them with Serializable).

You can see videos about that topic from the GWT 2015 meet up at https://www.youtube.com/playlist?list=PL1yReUCGwGvrqscLu1EAyYRPrr0ceEHLE

Slides are linked in the playlist description.

-- J.

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