GWT vs ExtJs

[Palani]

We are evaluating GWT and Ext-JS for our application development.

With GWT, I do not need to mess with Java Script and all the
development can be done in Java.

With Ext-Js, I need to learn JavaScript and it is not strongly typed
language.

Any other guidance would be appreciated.


Thank you in advance.

[Christian Goudreau]

The Ext-JS component library is richer than what comes with GWT only. Ext Js have done some nice work to get the JS library available in Java trough the GWT-EXT. You can see that on their website.

There's also a EXT-GWT project based on Ext-JS, but you'll need the Js open sources library anyway.

So it's no like you need to choose betweed them... Ext-JS is not the same thing as GWT... You can have both !

Christian

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[Yozons Support on Gmail]

Remember, too, that EXTJS is GPL code so you either have to be pure open source or you need a commercial license.  GWT's Apache license is more liberal and allows it to be used in commercial settings.

[David Durham]

> On Thu, Nov 19, 2009 at 12:11 PM, Palani <pas...@gmail.com> wrote:
>> We are evaluating GWT and Ext-JS for our application development.
>>
>> With GWT,  I do not need to mess with Java Script and all the
>> development can be done in Java.
>>
>> With Ext-Js, I need to learn JavaScript and it is not strongly typed
>> language.
>>
>> Any other guidance would be appreciated.

if you end up going the extgwt route:
http://www.extjs.com/products/gxt/, I wrote a library that might be
useful to you.

My library here: http://code.google.com/p/gxtforms/

Demo here: http://gxtforms.appspot.com/

-Dave

[Palani]

Thank y'all for your feedback.

[DaBlick]

You should also have a good look at Ext-GWT which is offered by the
same company. Unlike Ext-JS (which is wrapped JS), Ext-GWT is Java.
It's basically a component library layered on top of GWT, but with a
(IMHO) nicer and larger set of widgets. To me, the biggest selling
point of Ext-GWT (also commonly referred to as GXT) is that it has a
very nice MVC architecture built into that allows you to decouple at
an even finer granularity than M,V and C.

We switched to it from GWT-Ext (essentially pre-wrapped Ext-JS) and
have been very very happy and successful with it.

[Дмитрий Николаев]

For my personal experience, I would recommend use native GWT library.
More stable, low cost, good documented, strong typing

Most of the UI in Ext-js logically replecable by native GWT

[Paul Robinson]

Other reasons for using plain GWT:
- no licence issues for commercial apps (but ExtJS has a history of
switching licences)
- smaller downloads (because user doesn't need to download a js library)
- anecdotal evidence suggests it's faster (because GWT can optimize all
the js)
- the java tools available really do make development more efficient
than working in js (type safety, refactoring etc)
- support via this group is pretty good, but it seems (from the lack of
questions and answers) that most people here only use plain GWT. I'm not
sure if third party libs have the same level of support elsewhere.
- AFAIK GWT 2.0's code splitting won't work with js libs

Paul

[martin....@gmail.com]

I would strongly suggest that you stay away from the entire Ext
family. They have and continue to have a very deceptive licensing
scheme. It's licensed under GPL so you cannot use it commercially
unless you are will to open source you client source code *and* your
server side source code according to thier very terms of use - which
is very bizarre. Secondly even if you do end up buying a commercial
license at $329 / license, you still do not have access to the bug fix
releases.

The $329 / license really doesn't get you much. Version 2.0 final of
ExtGWT was pretty much demoware with over 100 critical bugs. 4 - 6
months later several bugs have been fixed but license holders are not
entitled to the latest bug fix release of 2.0.3. You not only need a
license but you need a support subscription to download the latest
stable version.

See http://www.extjs.com/products/gxt/download.php
http://www.extjs.com/forum/showthread.php?p=393316#post393316

So the real cost of the license is $629 / license / year. In addition
to this be prepared to pay frequent upgrade fees for no good reason.
Users were required to buy upgrade licenses within less than a year of
the ExtGWT 1.0 release because they did an *internal* refactoring to
clean up the code and not because new features were added to justify
the 2.0 release.

A final word of caution - read the terms of their commercial license
very carefully and run it by your legal. It's not your typical
commercial license that you'd expect with a commercial product. They
have some really severe restrictions that might even require you end
user / customer to buy a commercial license of ExtGWT.

> > Thank you in advance.- Hide quoted text -
>
> - Show quoted text -