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Subject: Re: [ws-rx] RE: [WS-RX] Action 0040
- From: Doug Davis <dug@us.ibm.com>
- To: ws-rx@lists.oasis-open.org
- Date: Wed, 5 Oct 2005 18:25:48 -0400
Ashok,
would it be possible for you
to write-up a formal proposal for this. Its hard to know from this
note exactly which kind of change you're proposing. Having the exact spec
changes you'd like to see will speed up the discussions.
thanks
-Doug
Ashok Malhotra <ashok.malhotra@oracle.com>
10/05/2005 06:20 PM
Please respond to
ashok.malhotra |
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0040 |
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> Action: Ashok to write proposed clarification
text on meaning of
> "observed" in this spec.
I sent earlier mail on this which said:
"The word 'observed' in the above paragraph should be interpreted
in the sense of wsp:Observed which, in earlier versions of WS-Policy (see
ftp://www6.software.ibm.com/software/developer/library/ws-policy2003.pdf),
was a value for the wsp:Usage attribute that identified how the assertion
was to be processed. Assertions that are 'Observed' become properties
of the policy subject but do not influence the content of messages."
If you read the spec, though, it defines wsp:Observed as follows:
"This assertion will be applied to all subjects and requesters of
the service are informed that the policy will be applied". This
is not quite the semantic we agreed to and I think we need a little more
discussion. My apologies! I relied on memory instead of checking
the spec.
When the RM assertions are applied to a WSDL, I'm assuming that this is
the WSDL between the AS and the AD. These are the two participants
in the exchange and it's their messages that the WSDL will define. If
the messages are to be exchanged reliably the AS or AD will add the RM
assertions to the WSDL. But note that the WSDL defines the messages
in the reliable sequence and not the CreateSequence, CreateSequenceResponse,
etc. which are framing messages that manage the protocol.
I think the semantic we require for this usage is that the second half
of the wsp:Observed quoted earlier "requesters of the service are
informed that the policy will be applied" but not the first half that
says that the assertion will be applied because these assertions are not
applied to the messages in the sequence.
If there is a requirement that the information in the RM assertions should
be carried in (some of) the framing messages, we will need to devise a
mechanism to say that.
All the best, Ashok
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