Comments on: Be your company MVP with GWT!

By: jorel

jorel — Fri, 16 Apr 2010 21:37:25 +0000

I agree with Oleks. The example really needs to have sufficient complexity to support the idioms being expressed. Although this example (http://code.google.com/webtoolkit/doc/latest/tutorial/mvp-architecture.html) does not show all the elements (it is missing GIN, command pattern, and a few others), it does present a “simple as possible” example of how to use MVP and event bus along with introductory unit test setup. I would like to know if anyone has seen a solid implementation of the command pattern anywhere. I would like to use that pattern in my upcoming GWT app. thanks in advance.

By: BonoboBoner

BonoboBoner — Thu, 27 Aug 2009 07:08:45 +0000

@Stakka: “spread across so many files, it must be a nightmare to maintain as a project grows.”

Actually it is easier to maintain (at least that was my impression after porting my helloworld-style-spaghetti-code to a structured MVP-approach), since your widgets know nothing about data access for example. When trying to swap out a GWT-Tree with a TreePanel from GXT for example, you can leave the RPC as it is and just have to register a different event source for selection of tree-items, etc. It is far easier to unit-test as well.

By: Oleks

Oleks — Thu, 27 Aug 2009 06:37:22 +0000

The stack you’ve mention is not the best one inspired by the video. MVP4G (http://code.google.com/p/mvp4g/) is a better implementation of MVP/DI/Events ideas expressed during the talk.

By: Stakka

Stakka — Wed, 26 Aug 2009 17:14:11 +0000

@BonoboBoner: We understand it’s skeleton code for a larger project, requiring a bit larger initial code. But if this pattern requires this much code, spread across so many files, it must be a nightmare to maintain as a project grows.

By: BonoboBoner

BonoboBoner — Wed, 26 Aug 2009 15:36:00 +0000

@Critics: This is not a “HelloWorld”-Sample, this is supposed to be an example for writing HUGE GWT applications á la Google Wave.

If you measure by “HelloWorld”-standards, even Rails is overkill for their famous 15-minute-blog-sample.

By: krycek

krycek — Wed, 26 Aug 2009 11:41:00 +0000

I just watched the presentation and read the article and had to sign up here just to agree with Stakka and Darkimmortal: hello world fail, lol

By: coffeehunter

coffeehunter — Wed, 26 Aug 2009 07:44:59 +0000

GWT is great but I’m still confused of MVP concept

visit: ecofe.blogspot.com

By: Darkimmortal

Darkimmortal — Tue, 25 Aug 2009 22:43:42 +0000

Lol, fail.

By: SleepyCod

SleepyCod — Tue, 25 Aug 2009 21:16:24 +0000

I couldn’t agree more with Stakka, this piece of code is just a gas factory and making an hello world example of it was definitely a bad idea…

By: Stakka

Stakka — Tue, 25 Aug 2009 20:26:04 +0000

That article should get an award for the most over engineered, code extensive Hello World example ever made. No thanks, I’ll stick to JSP and AJAX.

By: rubley

rubley — Tue, 25 Aug 2009 18:55:46 +0000

Good god what a mess, do people really develop stuff this way?

By: ErikT

ErikT — Tue, 25 Aug 2009 16:15:47 +0000

Small post bug: The Google Code MVP-link is missing a ” in the anchor tag.