[news.eclipse.technology.ecf] Starting a Chat Use Case

["John F. Patterson" <john_patterson@xxxxxxxxxx>]

It would help me if we identified a few use cases and worked them 
through using the API.  The simplest is probably starting a chat.  We 
can worry later about actually using the chat.  For now, I just want to 
understand how it all gets started.

Normally, I think of chat as having three main steps to get it going:

  1. One user initiates a chat session.
  2. Somehow another user becomes informed of the existence of the chat
     (the invite)
  3. The second user joins the chat.

For step 1), I assume that I create a SharedContainer to correspond to 
the chat session.  Then I create a SharedObject that will be used to 
accomplish the actual communication.
For step 2), I assume I must send the ID of the SharedContainer to the 
other user.  I don't believe the ECF provides an explicit way to do 
this, but one could be invented on top of it.
For step 3), I assume the second user creates a SharedContainer of the 
appropriate type (how do they know the type?) and Join the group 
identified by the ID sent to them.  Then somehow, they find the 
SharedObject.

Do I have this right, as far as it goes?  As you can see, I am a little 
unclear on some of the specifics, particularly on how the SharedObjects 
come to exist on the second machine.  Are they brought into existence 
upon joining the group?  Does the second user learn about them via an event?

I would find it helpful to see the code for this use case.