RE: Top cloud in triangle/rectangle diagram

David,

Here is my interpretation of the Roger's scenario [at http://lists.w3.org/Archives/Public/www-ws-arch/2002Oct/0072.html]

The guy in Widgets-R-Us who picked up the phone and then received an e-mail with the WSDL did "Find" a service.
The guy in FredCo who responded to the phone call and then e-mailed the WSDL, played a role of an "Advertizer".
The other guy in FredCo who created a WSDL or otherwise told the "Advertizer" guy about the WSDL did "Publish" a service.

I think the proper architectural roles were played well :).

I hope I'm not trying to be difficult :), but I'd like to see a BASIC WS architecture that does not need the act of meeting two parties and therefore does not need those roles.

-- Igor Sedukhin .. (igor.sedukhin@ca.com)
-- (631) 342-4325 .. 1 CA Plaza, Islandia, NY 11788


-----Original Message-----
From: David Booth [mailto:dbooth@w3.org] 
Sent: Friday, October 04, 2002 9:06 PM
To: Sedukhin, Igor; www-ws-arch@w3.org
Cc: Cutler, Roger (RogerCutler)
Subject: RE: Top cloud in triangle/rectangle diagram


At 05:53 PM 10/4/2002 -0400, Sedukhin, Igor wrote:
>When a Service advertises itself to the Requestor, does it not play a 
>role
>of an Advertiser? Roles can collapse into one compound role, but from the 
>logical point of view they are still atomically separate in the architecture.
>
>So, it seems that Slide 4 [at
>http://lists.w3.org/Archives/Public/www-ws-arch/2002Oct/0062.html ] says 
>that roles of Service and Advertiser are collapsed, and if the right 
>circle said Service/Advertiser it would be very valid interpretation of 
>the triangle. I don't think there is a contradiction with the triangle and 
>three roles in it.

Yes, I see what you mean.  You could describe it that way, but that's still 
assuming that the role of "Advertiser" is required as a significant 
architectural component.  It could be for a particular EXTENDED 
architecture, but I don't think it's needed or desirable for our BASIC 
architecture.  I think the scenario described in 
http://lists.w3.org/Archives/Public/www-ws-arch/2002Oct/0072.html helps 
make this clearer.  (That scenario was actually inspired by the business 
need that Roger Cutler described at our last F2F, incidentally.)


-- 
David Booth
W3C Fellow / Hewlett-Packard
Telephone: +1.617.253.1273

Received on Monday, 7 October 2002 11:49:41 UTC