Tiziana,

the idea of the service description terms was to enable the description of a service, potentially from different perspectives by using multiple service description terms. The service name should help the specifiers which term belongs to which service, not just a target to point guarantee terms to. Guarantee terms are a good means to define those aspects of a service whose compliance you want to monitor individually, not summararily as part of the service. In the given example, we may interpret that both parties are happy if the service is performed, without specifying detailed guarantees.

Whether this is realistic is another question. The examples are mainly to illustrate the syntax and cannot be analyzed too thoroughly for their semantic content. What I really mean is we are lacking a good primer ...

Heiko

-----
Heiko Ludwig, Dr. rer. pol.
IBM TJ Watson Research Center, PO Box 704, Yorktown, NY, 10598
hludwig@us.ibm.com, tel. +1 914 784 7160,  mob. +1 646 236 9453
http://www.research.ibm.com/people/h/hludwig/




"Tiziana Ferrari" <tiziana.ferrari@cnaf.infn.it>
Sent by: owner-graap-wg@ggf.org

01/21/2005 04:49 AM

To
<graap-wg@gridforum.org>
cc
Subject
[graap-wg] question regarding offer example (pp. 48-51)





Hi all,
I have a question regarding the offer example appears in the appendix of the
ws-agreement specification (latest version of the document).
In that example there's a service description term that refers to service
name "ComputeJob2", but the service scope of the guarantees all point to
"ComputeJob1". I don't see the need of having service names that never
appear in at least one guarantee term scope. Could you explain the meaning
of this?

Thank you in advance,
Tiziana



********************************************
Tiziana Ferrari            Tiziana.Ferrari@cnaf.infn.it
Italian National Inst. for Nuclear Physics / CNAF

v.le Berti Pichat 6/2, 40127 BOLOGNA, ITALY
tel: +39.051.6092.759      fax:+39.051.6092.746
http://www.cnaf.infn.it/~ferrari
********************************************