RE: [wsia][wsia-requirements][R413]

[Eilon Reshef <eilon.reshef@webcollage.com>]

Title: Message

I *think* I understand the intent but not necessarily the motivation. Are rich semantic descriptions of property values and relations a *requirement* or a "nice to have" feature of a particular API? I can see the value of having *human-readable* meta-information (aids the user of the Web Service). I can see the value of type constraints a-la Schema (mainly helping the Consumer map properties into programming constructs). Can anyone clarify the value of richer constraints?

 

Or, maybe, can we perhaps define this requirement as open for extensibility, for example:

This specification should permit the Producer to specify additional machine-readable semantic information regarding properties.

...which would lead to a construct such as Schema's <app-info> which allows arbitrary (but not specified) type constraints and information.

-----Original Message-----
From: Alan Kropp [mailto:akropp@epicentric.com]
Sent: Friday, May 03, 2002 9:10 PM
To: 'wsia@lists.oasis-open.org'
Subject: [wsia][wsia-requirements][R413]

R413 [Expressiveness]
                Producer properties should allow for the specification of
validation constraints and/or logic at each of the following levels:
1.      lexical
2.      syntactic
3.      semantic
4.      Constraints linking two property elements, defining how the value of
one may be computed from that of the other. Debate: CW, SR, AK, SF, SA. Also
414-415

        Reword #4: 

        By reference to the value(s) of one or more properties already
defined.

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