Re: [wsrp] Questions on event names and aliases

[Richard Jacob <richard.jacob@de.ibm.com>]

The portlet will alway receive what it declared as the event name. So the
answer to your second question would be yes, a.b will be send to the
portlet.
Concerning the first question I think that we always will have an
transformation of events on the consumer side before dispatching events.
In the easiest case it's an identity transformation when 2 portlets declare
the same event name.
The second case is name/alias transformation which is basically changing
the qnames for events.
And the third case is a full transformation including payload
transformation.

I think portlets have always to receive the events they declared, since
this is what they will handle. Aliases are a wiring help and could be event
modified post-development.

So back to your first question: Since we have a pre-transformation before
dispatching happens, it should be sufficient to have just the name
specified in the handledEvents array.
First a match of alias to name is done and once that happend the
wildcarding mechanism is used to decide if the event should be dispatched
if you will.

Mit freundlichen Gruessen / best regards,

        Richard Jacob
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             Subbu Allamaraju                                          
             <subbu@bea.com>                                           
                                                                        To
             06/04/2007 07:20          wsrp <wsrp@lists.oasis-open.org>
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                                                                   Subject
                                       [wsrp] Questions on event names and
                                       aliases                         
                                                                       
                                                                       
                                                                       
                                                                       
                                                                       
                                                                       




I have a question on event names and wildcard matching.

Section 5.1.16 defines the wildcard mechanism for event names, limiting
the description to just "name"s of published or handled events. Does
this mechanism also apply to alias names of events?

Since an alias is another name for the same event, logically it seems
valid for the consumer to match alias names based on the same
wildcarding algorithm used while matching by the event name.

A follow up question is, when a portlet declares an event name such as
"{foons}a.b." as the event name and the event match happened via an
alias, what name should be used while dispatching the event to the
producer? I would assume that it should be the "{foons}a.b.".

Thanks for any comments.

Subbu

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