FW: [wsn] Groups - Proposal for Pull Notification (pull proposal.1.pdf) uploaded

["Patil, Sanjay" <sanjay.patil@sap.com>]

Curiously enough the conclusion we are arriving at on this topic today
is very close to my proposal in the past, except that we are calling
Queue as a PullPoint :-)

Thanks,
Sanjay

>-----Original Message-----
>From: Patil, Sanjay 
>Sent: Tuesday, Feb 01, 2005 19:50 PM
>To: 'sggraham@us.ibm.com'; wsn@lists.oasis-open.org
>Subject: RE: [wsn] Groups - Proposal for Pull Notification 
>(pull proposal.1.pdf) uploaded
>
>
>
>Hi Steve,
>
>Thanks for the proposal. I have some comments and also a 
>strawman proposal to address my concerns ...
>
>Is it a good idea to put the pull functionality on top of the 
>Subscription capability? I believe pull (just like push) is a 
>delivery level concept and we should try to keep it separate 
>from the Subscription semantics.
>
>I therefore propose the following -
>A> Define an interface for a QueueFactory and a QueueManager
>B> Define an interface for a Queue for pulling messages
>C> Keep Subscription interfaces unchanged. The Subscribe 
>request now contains EPR for a queue instead of a push endpoint.
>
>Apart from allowing the clean separation of delivery semantics 
>from Subscription capabilities, the above proposal allows for -
>A> A Subscriber to shift between a pull mode and push mode as 
>and when it wishes. 
>
>B> Use cases where an independent MailBox service hosts 
>multiple queues (with possibly different QoS) from which the 
>Subscriber can independently pick and choose a particular 
>Queue it prefers and passes its EPR as ConsumerReference to 
>the NotificationProducer as part of the Subscribe message 
>(like any other regular Subscription ME).
>
>Let us talk more tomorrow!
>
>Thanks,
>Sanjay
>
>>-----Original Message-----
>>From: sggraham@us.ibm.com [mailto:sggraham@us.ibm.com] 
>>Sent: Monday, Jan 31, 2005 10:46 AM
>>To: wsn@lists.oasis-open.org
>>Subject: [wsn] Groups - Proposal for Pull Notification (pull 
>>proposal.1.pdf) uploaded
>>
>>
>>The document named Proposal for Pull Notification (pull 
>>proposal.1.pdf) has
>>been submitted by Mr Stephen Graham to the OASIS Web Services 
>>Notification
>>(WSN) TC document repository.
>>
>>Document Description:
>>Sketch of the Pull Notification proposal per AI from Oct f2f
>>
>>Download Document:  
>>http://www.oasis-open.org/apps/org/workgroup/wsn/download.php/1
>>1249/pull%20proposal.1.pdf
>>
>>View Document Details:
>>http://www.oasis-open.org/apps/org/workgroup/wsn/document.php?d
>ocument_id=11249
>
>
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>-OASIS Open Administration
>