atom feed7 messages in com.googlegroups.google-web-toolkit-contributorsGWT and large applications
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Sanjiv JivanFeb 29, 2008 7:30 am 
Sanjiv JivanFeb 29, 2008 8:01 am 
stuckagainMar 3, 2008 1:06 am 
stuckagainMar 3, 2008 1:13 am 
Sanjiv JivanMar 4, 2008 3:45 pm 
Sanjiv JivanMar 5, 2008 5:54 am 
stuckagainMar 10, 2008 6:34 am 
Subject:GWT and large applications
From:Sanjiv Jivan (sanj@gmail.com)
Date:Feb 29, 2008 7:30:35 am
List:com.googlegroups.google-web-toolkit-contributors

Hi,

I realize this topic has been brought up several times, and the general suggestion from GWT is to split the application into separate modules and use iframes.

While this is a workable solution, I feel that GWT can do a little better to support large apps by allowing users to split their application into separate modules, however instead of having these separate modules be treated as separate apps loading in iframe, be aware that these modules belong to the same application and have he ability to lazy load these separate modules as JS only, without the boilerplate GWT stuff that does into each compiled application. There can be some inherits type contract to indicate that a module is only part of the main app.

Each of these JS only modules load in the the context of the main app, without requiring a separate iframes or and repeated shared code as would be the case if these were loaded as separate apps in iframes.

I feel this approach has several advantages over the iframe approach

- as mentioned above, there is not repeated boiler plated code - seamlessly works as a single app, where portions of the apps (i.e the separate modules) are transparently loaded in chunks. Once loaded, it is equivalent to the the whole all being loaded as a single JS GWT can still behind the scenes to a MD5 check to see if JS module needs to be refetched. With the iframe approach, there will be a "blank" screen during the period a request to a new module is made - related to the point above, application functions as a single app, and not an integration solution. things like SSO work better.

Any thoughts or comments?

Thanks, Sanjiv

GWT-Ext Widget Library : http://code.google.com/p/gwt-ext/