date:20120119

Re: GWT Timer doesn't work

2012-01-19 Thread Hanna Varakhobava

Hey, somebody...

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The (currently) definite way to achieve Push/Comet/Streaming in a GWT app? :)

2012-01-19 Thread Stefan Sigvardsson

Hi y'all!

Just a few quick questions. 

Background: 
We have a GWT app running on multiple touch-screen interfaces which need to 
stay up to date with each other. 
Currently we make scheduled callbacks to update the apps when they are 
idle, but some kind of Push technology would be preferable. 
We are not using app engine, instead we have our own tomcat 7 server which 
we deploy the application to. 
We are using RemoteService interfaces to do standard async callbacks to 
RemoteServiceServlet implementations. 
The touch-screens are all running the latest Firefox release (currently 
9.0.1). 
We have held off dealing with Push, confident that GWT soon would include 
it natively, but now GWT seems to only focus on app engine from what I can 
tell. 

Questions:
1. What is your (currently) recommended way of dealing with Push in GWT? Is 
it still http://code.google.com/p/gwt-comet/ (or is it abandoned)?
2. Do you know if maybe GWT soon will include a simple Push technology for 
servers other than app engine?
3. If you have your own implementation, and it is stable and easy to run in 
a GWT app, would you mind sharing it?

Kind regards!
Stefan

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Re: The (currently) definite way to achieve Push/Comet/Streaming in a GWT app? :)

2012-01-19 Thread Andrea Boscolo

There are a lot of libraries out there dealing with comet/push/reverse ajax
technology. Some could be:

- http://code.google.com/p/gwt-comet/ (I don't see a valid update in almost
an year)
- http://code.google.com/p/rocket-gwt/wiki/Comet (over 2 year of inactivity)
- http://code.google.com/p/atmosphere-gwt-comet/ (should be a gwt wrapper
for atmosphere)
- http://code.google.com/p/gwt-comet-streamhub/ (I don't know if it could
be work with tomcat)
- http://code.google.com/p/gwteventservice/ (updated, can be easily used
with RPC, long polling/streaming options)

There are also websocket libraries
(http://code.google.com/p/gwt-websocketrpc/wiki/ServerPushExample
http://code.google.com/p/gwt-ws/), servlet 3.0 suspend/resume options,
server-event communications and so on.
Probabily there are too many options to look into...

http://code.google.com/p/google-web-toolkit/issues/detail?id=267&colspec=ID%20Type%20Status%20Owner%20Milestone%20Summary%20Stars

worth a read, even if it states a "PatchesWelcome" status and is ment for
request factory.

GWT has always been server-agnostic, so you can still use whatever server
tech you prefer. Of course by using servlets/app engine you can find some
advantages.

Hope that helps.
Andrew.

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