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From Tim Moloney <t.molo...@verizon.net>
Subject Re: Event-driven whiteboard pattern?
Date Sun, 29 Apr 2007 02:39:38 GMT
Will do.  Thanks for the pointer.  :)


Jeremy Volkman wrote:
> Perhaps you should look at the OSGi Event Admin spec, which is a pub/sub
> event framework that uses the whiteboard pattern.
> http://www2.osgi.org/javadoc/r4/org/osgi/service/event/package-summary.html 
> HTH,
> Jeremy
> On 4/28/07, Tim Moloney <t.moloney@verizon.net> wrote:
>> Is it possible to use the whiteboard pattern for an event-driven
>> application?
>> I have a prototype of what I want to accomplish using the listener
>> pattern.  I experienced first-hand the extra admin of getting service
>> references, etc.  I've read a couple of the tutorials which describe
>> using the whiteboard pattern in OSGi but they aren't event-driven.  The
>> timing of these examples is controlled by the event-listener, not the
>> event source.  I need the interaction to take place when the event
>> occurs, not when the listener gets around to it.
>> Am I missing something obvious or should I just stick with the listener
>> pattern?
>> Perhaps another way to ask this is, what is the best way for an
>> event-driven app to use the OSGi service registry?
>> Thanks,
>>   Tim

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