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Design discussion

Design discussion

2005-04-13 - By Jin Chun

Back

Reply: 1 2 3 4 5 6 7 8 9 10 >>

... (Sent to early :-), I mean ajax and scripting aren't really asynch, its
still rpc to the server and only asynch within the confines of the browser/dom
/dhtml land.

Jin
-- ---- ---- ---- ---- ---
Sent from my BlackBerry Wireless Handheld

-- -- Original Message -- --
From: An interest list for Sun Java Center J2EE Pattern Catalog [J2EEPATTERNS
-INTEREST@(protected)]
Sent: 04/13/2005 02:48 AM
To: J2EEPATTERNS-INTEREST@(protected)
Subject: Re: Design discussion

i absolutely agree with ramnish.
using javascript with xml is cleanest and simplest way to do this.
like gmail does.

-- --Original Message-- --
From: An interest list for Sun Java Center J2EE Pattern Catalog [mailto
:J2EEPATTERNS-INTEREST@(protected)]On Behalf Of Ramnish Kalsi
Sent: 12 Nisan 2005 Sal? 19:43
To: J2EEPATTERNS-INTEREST@(protected)
Subject: Re: Design discussion

On the client side, the technology which google uses is also pretty clean -
AJAX - Asynchronous javascript and xml.
There are some good discussions about this on serverside.com

But, depends upon, how you want to divide the responsibilities between client
and server.

ramnish.

-- --Original Message-- --
From: An interest list for Sun Java Center J2EE Pattern Catalog [mailto
:J2EEPATTERNS-INTEREST@(protected)]On Behalf Of jon
Sent: 12 April 2005 17:38
To: J2EEPATTERNS-INTEREST@(protected)
Subject: Re: Design discussion

I saw a product once that used Javascript to interact with an applet, which
then established network connections on its behalf. I think in that case it
was only using straight "pull" HTTP requests, but presumably you could open a
connection that would accept a server-initiated "push".

I would expect such an approach to be pretty involved, but you might want to
research it more.

Regards,
Jon Petruk

On Tue, 12 Apr 2005 12:22:07 -0400, Vijay K Dasari wrote
> In Client/ Server model using thick clients like SWING, we can use an
Observer Pattern ( Publish/Subscribe ), where
> the client subscribes to the messages. when the server gets a new message, it
can notify all the subscribers(users).
>
> As Web (HTTP) is stateless, the client has to ask the server for the new
messages.
> Client can make request to a servlet(which tells whether the user has any new
messages) at certain time intervals.
> In html we can use the "Refresh" metatag. which looks something like
>
> <meta http-equiv="Refresh" content="1800;URL=/servlet/checkNewMessages.do"/>
>
>
> Vijay.
>
>

> -- --Original Message-- --
> From: An interest list for Sun Java Center J2EE Pattern Catalog [mailto
:J2EEPATTERNS-INTEREST@(protected)]On Behalf Of Maya menon
> Sent: Tuesday, April 12, 2005 11:36 AM
> To: J2EEPATTERNS-INTEREST@(protected)
> Subject: Design discussion
>
>
> Our client/server application which work realtime:
> Currently we have a client/server application. Our users log into the client
and the system delivers messages to the users.
> when a new message arrives the users see a signal flashing and therby gets
notified about the
> new message.
>
> Now this client needs to be transformed into a web based system.
>
> Instead of the clients logging into the client window, now the users log into
the web site.
> The same feature has to be provided.
> when a new message arrives the users have to see a signal flashing and therby
gets notified about the
> new message.
> Can you all please suggest a good J2ee design approach for this ?
>
> How do we enable the flashing signal ? I need some suggestions.
>
> Thanks,
>
>

>
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--
Jonathan Petruk
J. Petruk Consulting Inc.
E-mail: jon@(protected)
phone: 905-668-9209 fax: 905-668-4728
http://www.petruk.net/

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859 (See http://iso-8859.ora-code.com)-1">

<META content="MSHTML 6.00.2800.1106" name=GENERATOR></HEAD>
<BODY bgColor=#ffffff>
... (Sent to early :-), I mean ajax and
scripting aren't really asynch, its still rpc to the server and only asynch
within the confines of the browser/dom/dhtml land. Jin -- ---- -----
-- ---- ----- Sent from my BlackBerry Wireless Handheld <hr>
  -- -- Original Message -- -- 
  From: An interest list for Sun Java Center J2EE Pattern==============
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