Mike, Ken
Please check out my edits of the sections...There seemed to
be good and sufficient material for me to work with in what I started
from...Ugh!
Bob
From: Ken Laskey [mailto:]
Sent: Sunday, April 12, 2009 9:03 PM
To: Francis
McCabe
Cc: Mike Poulin; James Odell;
Subject: Re: [soa-rm-ra] SOA-RA(F)
reorganization
I will reread but I thought the insistence was policies not referring
to contracts.
On Apr 12, 2009, at 8:49 PM, Francis McCabe wrote:
I
do not believe that we ever signed up for Michaels insistence on contracts not
referring to policies. I for one do not.
On Apr 12, 2009, at 5:46 PM, Ken Laskey wrote:
It
appears we agree on the specifics for policies and contracts, and indeed did
discuss much of this before. I'm wondering if something critical got
lost in the last Policy section shuffle that eld to the current text.
Ken
On Apr 12, 2009, at 7:24 PM, Mike Poulin wrote:
As I
recall, a year ago I initiated a discussion here about relationship
between Policies and Contracts. Now, it looks like James has picked up my
position. I said that time that:
1) contracts (due to their
private matter) may not refer to each other while policies may and
effectively do
2) contracts may include more things than just policies
or references to policies, e.g. a selection of a subset of services
interfaces derived from the service description. This information is not
really a policy though it may be expressed in the form of policy
assertions
3) there may be different types of policies - for the
service development and for the run-time. The latter must be mentioned in
the service contracts as well as in the service descriptions (otherwise
the consumer is not obliged to be compliant with non-specified policies),
the former does not need such mentioning but they might be included into
development tools and design controls.
In any case, Policies AND
Contracts deserve much more attention in SOA RM.
-
Michael
-----
Original Message -----
From: "James Odell"
To:
Subject:
[soa-rm-ra] SOA-RA(F) reorganization
Date: Sat, 11 Apr 2009 17:46:06
-0400
Hi
all,
After yet another reading of the SOA-RA (Foundation?) and
having sat through the recent spate of meetings, I have the following
say about the reorganization of the SOA-RA:
Overall, I think that
the chapters and topics are sequenced in a coherent and logical manner.
Perhaps, it is because I read it too many times now. But, I
don’t think so.
Also, I understand the need to minimize the amount of
work needed on the SOA-RA at this point in its development. We
need to get it released for public comment — without compromising
quality and understandability, of course.
Having said this, the only
thing that bothers me enough to suggest a reorganizational change is the
area of Policies:
1) Policies, in general, are depicted in
document far earlier than they are finally addressed (by 40-50 pages).
Since policies — IMO — are an important ingredient in the SOA-RA,
I would like to see them addressed earlier. (My personal opinion
is that policies are not mentioned anywhere near the amount that they
should. For example, they are used in events, composition of services,
roles, and organizations. However, since this would involve
additions to the current document, I will not push this)
2)
I strongly dislike grouping the entire
topic with contracts. While policies are used for contracts,
Policy is a standalone concept — which neither depends on nor is used
solely with Contract. (Even the OMG and W3C treat policies as a
separate notion.) Why is this reasonable? Because policies
are used in a variety of situations — only one of which is contracts.
By placing Policies in lock step with (and almost subordinate to)
with Contracts is not appropriate, IMO.
3) My suggestion:
separate Policies and Contracts into two distinct subsections (e.g., 4.4
and 4.5).
In short, this would provide clarity for the
notion of Policy and not require much change to the current
document.
All the
best,
Jim
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-----------------------------------------------------------------------------
Ken Laskey
MITRE Corporation, M/S H305
phone:
703-983-7934
7515 Colshire Drive
fax: 703-983-1379
McLean VA 22102-7508
-----------------------------------------------------------------------------
Ken Laskey
MITRE Corporation, M/S H305 phone: 703-983-7934
7515 Colshire Drive
fax: 703-983-1379
McLean VA 22102-7508
