RE: possible SML use cases

Hi Ken
Thanks for your interest in SML and forwarding these use cases to the WG.

In the first scenario, it is not clear to me why you can't guarantee repeatability across different requests. I can understand the service returning different data if the data sources have changed, but this should be fine.  Please help us understand the reasons that prevent repeatability in this scenario. Right now, I am unable to determine if SML will be of any help here.

In the second scenario, you should be able to capture the execution context as an SML model  - defining  schema, inter-document references, instance documents, and Schematron constraints to capture the execution  context.

SML is basically XML Schema 1.0 augmented with inter-document references that capture relationships between documents, some built-in constraints on inter-document references, and Schematron constraints.  If you can use XML Schema 1.0 and XML 1.0 to capture some aspects of these two scenarios, you should be able to use SML to capture additional aspects of these scenarios.

Thanks!
Pratul


From: public-sml-request@w3.org [mailto:public-sml-request@w3.org] On Behalf Of Ken Laskey
Sent: Saturday, September 15, 2007 6:01 AM
To: public-sml@w3.org
Subject: possible SML use cases

I've exchanged email with Jim Lynn and he thought that these looked like interesting use cases but suggested I post them to this list to get a better feel for their applicability.

So here they are.  Thoughts are welcome.

Ken

Begin forwarded message:


From: Ken Laskey <klaskey@mitre.org<mailto:klaskey@mitre.org>>
Date: September 15, 2007 8:45:27 AM EDT
To: "Lynn, James (HP Software)" <james.lynn@hp.com<mailto:james.lynn@hp.com>>
Subject: Re: Meeting minutes: 2007-09-14

Jim,

I don't know a lot about SML and have not had a chance to read the spec since a pre-Submission draft but I'm interested in what its use might be in several scenarios:

1. I send a request to a data access service asking for values for certain properties, where I specify the vocabulary in which the property semantics are defined.  The data access service finds appropriate data sources and sends me back a response.  But a bare response with the values is of limited use if I don't know where those values came from or how information was processed to generate those values.  it is especially a problem if I make the request again next week and can't guarantee repeatability.  Could SML be used as a logging mechanism to tell me unambiguously how the values were generated?  Could I later submit that log and have the process re-executed?

2. In the OASIS SOA Reference Model, the following is defined and discussed

The execution context of a service interaction is the set of infrastructure elements, process entities, policy assertions and agreements that are identified as part of an instantiated service interaction, and thus forms a path between those with needs and those with capabilities.

Is SML a reasonable means by which to capture the execution context?

Thanks for helping to pull some pieces together.

Ken

On Sep 15, 2007, at 8:30 AM, Lynn, James (HP Software) wrote:


Ivan et al,

I am an editor on the SML WG. Just as an fyi for your group, this is SML 1.1, we are scheduled to release Second Public Working Draft next week.

Regards,

Jim

________________________________
From: w3c-semweb-cg-request@w3.org<mailto:w3c-semweb-cg-request@w3.org> [mailto:w3c-semweb-cg-request@w3.org] On Behalf Of Ken Laskey
Sent: Friday, September 14, 2007 5:10 PM
To: Ivan Herman
Cc: W3C SW Coordination Group; Kathryn Blackmond Laskey
Subject: Re: Meeting minutes: 2007-09-14
FYI, re Service Modeling Language (SML), see http://www.w3.org/XML/SML/

Ken

On Sep 14, 2007, at 11:16 AM, Ivan Herman wrote:



-----------------------------------------------------------------------------
Ken Laskey
MITRE Corporation, M/S H305      phone: 703-983-7934
7151 Colshire Drive                         fax:       703-983-1379
McLean VA 22102-7508