Re: [wsrp-coord] Groups - Discussed Eventing Semantics.doc uploaded

[Subbu Allamaraju <subbu@bea.com>]

Rich,

Thanks for this doc. It is a good read. Please find some comments below.

General Comments:

1. It would be useful to introduce a class of events that do not cause 
new events or cause state changes. This would address a common use case 
where a portlet wants to propagate some state to other portlets, to let 
those portlets render differently. This also allows the consumer to 
piggy back dispatching such events over a getMarkup request. Other 
events could still be processed with the mechanism described in this 
proposal.

2. Mode/state changes to cause predefined events (e.g., modeChanged, 
stateChanged). I'm not sure if this is useful for state changes, but 
there are use cases for mode states to trigger events.

3. Can the consumer generate arbitrary events?

Specific Comments:

[1.1] ... in other Portlets the Consumer aggregates from the same Producer.

Does this mean that eventing is limited to portlets from the same producer.

[1.1] In the second step...

The description of the second step could also clarify that the second 
may involve several roundtrips of handleEvents() calls.

[2.1.1] generatedEvents

If a portlet is allowed to generate events that it has not described, 
could we drop generatedEvents altogether? This may actually simplify the 
programming model for portlet developer.

[3.2] handleEvents() operation

Can this operation return new navigational state? When a portlet is 
allowed to make state changes, it may have to change the navigational 
state as well.

Regards,

Subbu



richt2@us.ibm.com wrote:

> The document Discussed Eventing Semantics.doc has been submitted by Rich 
> Thompson (richt2@us.ibm.com) to the WSRP Cross-Portlet Coordination SC 
> document repository.
> 
> Document Description:
> Sorry about getting this out so close today's call.
> 
> Download Document: 
> http://www.oasis-open.org/apps/org/workgroup/wsrp/wsrp-coord/download.php/5196/Discussed%20Eventing%20Semantics.doc 
> 
> 
> View Document Details:
> http://www.oasis-open.org/apps/org/workgroup/wsrp/wsrp-coord/document.php?document_id=5196 
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