Updating view when the model changes

We have a requirement that when we receive a message and write to database we should update all the concerned User's(intersted in that data) view(implemented as JSP's). We don't want to put a time based refresh mechanism as it would be entirely inefficient and annoying for the users whose view of interest has not changed. Can we implement a MDB which when it gets a messages calles controller( servlet) which in turns calles the JSP's? If the approach is fine then the issue is that message need to be written to database and then only the view need to be refreshed, Any thoughts on the implementation strategy?
I tried to serach for already posted topics on the issue but could not find much..so Sorry if the issue is repeated.

Sorry, HTTP is a pull only medium and wasn't design for real time updates like you're asking for.
You may be able to write JavaScript that polls for updates and only reloads the change when there is an update but that is beyond my JavaScript skills. Or you could write a Java Applet that polled the server often.
No matter what you do it's gonna be an ugly hack. I suggest you reconider what is more important, real time updates or a web interface.

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Thanks! Could you give more details on how to use the second approach?
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     public Vector datavec, thvec;
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table.setPreferredScrollableViewportSize(new Dimension(500, height));
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nscrollPane = new JScrollPane(table);
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Message was edited by:
user526724

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Cheers!
Message Edited by tbd on 03-23-2007 09:34 PM
Message Edited by tbd on 03-23-2007 09:35 PM
"Inside every large program is a small program struggling to get out." (attributed to Tony Hoare)
Attachments:
evt.jpg ‏7 KB

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Revision: 11112
Author:   [email protected]
Date:     2009-10-23 12:35:31 -0700 (Fri, 23 Oct 2009)
Log Message:
DatGroup and SkinnableDataContainer dispatch a "dataProviderChanged" event when the dataProvder changes. Fixed a ScrollerLayout typo.
QE notes:
Doc notes: none
Bugs: sdk-23489
Reviewer: Ryan
Tests run: DataGroup
Is noteworthy for integration: no
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