RE: [flexcoders] Data Sharing. . .

[Steven Webster]

Chris,
 
From what you describe, Flash Comm Server will allow you to 
achieve what you're looking to do.  Essentially, with Flash Comm Server you 
can have server-side state (on the Flash Comm Server -- called a Remote Shared 
Object) to which all your clients subscribe or "listen" to.  Whenever one 
client updates the shared object, a notification is then sent (with the new 
data) to all other subscribed clients, allowing you to build apps where multiple 
connected clients are able to "see" the same data.
 
If you're working with Cairngorm, perhaps follow through 
some of the stuff that Alex Uhlmann posted earlier; there are numerous possible 
entry points by which you can integrate FCS and Cairngorm to simplify your 
application development with FCS.  We've delivered projects where clients 
are screen-sharing, where disconnected clients are synchronised to "pause" for 
each other to reach certain states, where data is pushed simultaneously to 
multiple connected clients, and where data is streamed in real-time from J2EE 
application tier/messaging systems into multiple connected clients.  

 
There are issues that you will have to handle with regards 
to locking, concurrency, conflict resolution, etc, if you are allowing multiple 
clients to edit records; but these problems are well defined outwith the RIA 
space, with design patterns and techniques to address these issues that you'll 
be able to leverage in your own application development.
 
Increasingly, we're finding Flash Comm Server, or more 
specifically the RTMP data protocol, to be a key piece of the technology 
stack in the delivery of Enterprise RIAs, for the data-subscription and 
server-push capabilities it affords.
 
Best,
 
Steven
 


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From: flexcoders@yahoogroups.com 
[mailto:[EMAIL PROTECTED] On Behalf Of 
chris.alvaradoSent: 30 August 2005 23:15To: 
flexcoders@yahoogroups.comSubject: Re: [flexcoders] Data Sharing. . 
.
ive read some of the stuff you speak of and believe me i would wait 
if i could. this project is what i would consider to be 
*huge*.unfortunately this project is set to be in full swing in the next 
2 months. =\
On 8/30/05, Aldo 
Bucchi <[EMAIL PROTECTED]> wrote:
Wait 
  for Mistral's data subscription capabilities, as I've read around ;)
  On 8/30/05, 
  chris.alvarado <[EMAIL PROTECTED]> wrote:>  
  Let's say i have an interface that gives users the ability to 
  manipulate> the same data. . .>  >  What 
  happens when that data changes as a result of an action by one of the> 
  users viewing said data.>  >  what is the best way to 
  update each user's "view"?>  >  Is FCS the way to do 
  this?>  >  example:>  >  I 
  have a shipping app. users can select from numerous planned "voyages" 
  in> order to manipulate loadouts. say 2 users are viewing the same 
  voyage.>  >  here they can drag containers from the 
  "warehouse" onto the voyage to load> the container. however if one use 
  does this the container still appears to> be in the warehouse to any 
  other user viewing the same voyage.>  >  what would be 
  the best way to update the other user's view of the voyage?> -- 
  > -chris.alvarado> [application developer] > 
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