W3C home > Mailing lists > Public > www-ws-desc@w3.org > September 2003

Re: message reference component & syntax

From: Sanjiva Weerawarana <sanjiva@watson.ibm.com>
Date: Thu, 18 Sep 2003 16:55:51 +0600
Message-ID: <008601c37dd3$6df57480$de120209@lankabook2>
To: <www-ws-desc@w3.org>

I forgot to add ..

I have dropped the {direction} property from the Message 
Reference component. As we discussed during the last 
telecon, a message reference DOES NOT have such a property
as the pattern has already chosen and fixed the direction
the particular message placeholder travels in. That is, if
the pattern has a placeholder message called XXX, then the
pattern will of course indicate the source and sink of that
message. Thus, when describing an operation and associating
an actual message to the placeholder, the user does not
have the option of changing the the direction .. its already
set. Thus, the component does not have such a property.

Now, the syntax for <operation> still has <input> & <output>.
I will discuss this issue in the message I promised to send
below.

Sanjiva.

----- Original Message ----- 
From: "Sanjiva Weerawarana" <sanjiva@watson.ibm.com>
To: <www-ws-desc@w3.org>
Sent: Thursday, September 18, 2003 4:49 PM
Subject: message reference component & syntax


> 
> In the current draft we have operation/(input|output)/@messageReference
> being optional. That doesn't make any sense as we have no rules 
> defined for how to compute its value if its not there. Life ain't
> going to work without knowing what role a message plays in a 
> message pattern.
> 
> This is part of a larger set of problems with the syntax we 
> currently have. I will be sending a separate note out about that
> but wanted to highlight this particular inconsistency first.
> 
> Sanjiva.
Received on Thursday, 18 September 2003 06:56:28 GMT

This archive was generated by hypermail 2.2.0+W3C-0.50 : Monday, 7 December 2009 10:58:26 GMT