Re: [wsdm] Proposed requirement from WSDM

[Steve Graham <sggraham@us.ibm.com>]

Interesting.
So this is kinda like a very strongly
applied filter expression?
Right now, the selector specifies a
pattern that MUST be met in order for the entire message to be sent.

If I understand this requirement, it
is an additional "expression" on the subscribe, but stating the
pattern of the notification itself, ie the elements that must
appear on the notification and no more
than those elements specified.

It will, of course be very tricky to
make sure that the "pattern" expressed will end up with a notification
message that is still validatable with respect
to the message schema.

sgg

++++++++
Steve Graham
(919)254-0615 (T/L 444)
STSM, On Demand Architecture
Member, IBM Academy of Technology
<Soli Deo Gloria/>
++++++++

"Vambenepe, William N" <vbp@hp.com>

09/09/2004 01:34 PM

To	<wsn@lists.oasis-open.org>
cc	<wsdm@lists.oasis-open.org>
Subject	[wsdm] Proposed requirement from WSDM

Dear WSNers,

The WSDM TC would like to submit the following requirement to WSN:

"Add the option, when subscribing for notification, to specify that
only
parts of the message should be sent. Note that the message that is sent
still needs to be schema-valid for the schema of the message."

The reasoning behind this requirement is that the content of the
notification message can get very large and in some cases only a subset
of this is of interest to the consumer. And in some cases, the
notification producer doesn't know what parts of the notification the
consumer is interested in, but the subscriber knows. So it should be
possible for the subscriber to express this in the subscription.

The WSDM TC would like WSN to add this to the WSN issues list.

Regards,

William

PS: doesn't it make us all feel good that Outlook wants to correct
"WSNers" to "Winners" on the first line of this email?
;-)

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