Re: GWT support for Grails/Groovy domain objects

And to add one thing.

Using JSON w/ GWT is well.. "awful".

The main reason for this, is that you get JSON back to the client, and either use Overlay Types (can't use instanceof with there, and about 500 other issues).. or you hve to take a "simple" OverlayType and then re-instantiate all of your objects (i.e. you do eval() once on the JSON, then for-loop etc to re-instantiate objects from that JSONObject).

And then, the joy doesn't stop.  When you want to say, post JSON back to the server, you have to redo this process, converting all the "java objects" (which are of course actually javascript) into JSON.

All in all, using JSON w/ GWT is a very (very) painful experience.

THe humor of course, is that you have to convert objects "to and from Java" so that you can then use all the "java" API's etc that GWT (just converts into Javascript).

Heh

Roger

On Jan 27, 2010, at 1:30 AM, Jan Ehrhardt wrote:

The problem is the GWT RPC's serialization, which can't work with objects created by hibernate. You can use the DTO Grails plugin (http://www.grails.org/plugin/dto) or you can use JSON / REST for communication.

In the case of a Grails app, which comes with great support for REST / JSON, I would prefer the second way.

Regards

Jan Ehrhardt

On Wed, Jan 27, 2010 at 4:37 AM, Don Ruby, R&amp;D <donald.ruby@mindspring.com> wrote:

GWT is the obvious choice for UI. But if you want to use Grails/Groovy
for server side, you have to either code messy DTOs or client side
POJOs.  It would be nice if GWT would support using the Grails/Groovy
domain objects directly on the client.  Any chance of that happening?

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