Re: WS-Eventing optionality analysis

Nice catch on the Expires issue.  Seems to me that it would be good for 
the spec to mandate that whatever choice the event source makes that it be 
consistent across all operations.  Sounds like a new issues to me.

thanks
-Doug
______________________________________________________
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Gilbert Pilz <gilbert.pilz@oracle.com> 
Sent by: public-ws-resource-access-request@w3.org
09/21/2010 06:45 PM

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"public-ws-resource-access@w3.org" <public-ws-resource-access@w3.org>
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Subject
WS-Eventing optionality analysis






Attached is an analysis of the optionality of the various 
operations/messages and features in WS-Eventing. I'm not sure if this 
format is the best for displaying this information. I tried to color code 
things: black is required, blue is required for one party but not another, 
red is optional for both parties. Sub-elements/sub-features are scoped to 
the optionality of there containing element/feature. For example, event 
sources are required to support expiration values using xs:duration iff 
they support wse:Expires, but subscribers may elect to use xs:dateTime 
values - so xs:duration is blue (required for event source, optional for 
subscriber) scoped by a red element/feature (wse:Expires).

If anyone has a better suggestion on how to display this info, please 
speak up.

One issue that writing this analysis brought up is the granularity of 
options. In the case of WS-Eventing this only impacts subscription 
expiration, but it might impact the other spec differently. For 
WS-Eventing the question is, "If you are an event source that supports 
wse:Subscribe/wse:Expires are your subscription manager therefor required 
to support wse:Renew/wse:Expires?" Put another way, "Can I have a 
subscription manager that supports wse:Renew/wse:Expires even though my 
event source doesn't support wse:Subscribe/wse:Expires?"

~ gp[attachment "ws-eventing-optionality-analysis.odt" deleted by Doug 
Davis/Raleigh/IBM]