Karl Pauls a écrit :
Indeed the event dispatching is distributed.
o.k., I see.
That is because I said that the specification seems to me a bit elusive
referring to UPnP Events ...
Moreover this could be a valid reason to adopt an external bundle that
bridge all the UPnP Events to the EA service ... it works also without
the base driver ....
Hm, the problem I see with this is how do you know that a device that
reads the spec differently doesn't send its events to the event admin
too? Then we end-up with a situation where we have duplicated events.
Sure, but this is legacy since the
org.osgi.service.upnp.UPnPEventListener exists before R4 and EventAdmin.
One more thing : an argument to add the UPnP to EA bridge inside the EA
implementation may be an optimization
in which the bridge is deactived when non EventHandler with
(event.topics=org/osgi/service/upnp/UPnPEvent) is registered !
A general-purpose dependency manager could be useful in this context !
Isn't it Rick ;-)
More over, there is the same optimization for Framework-,
Bundle-,Service-, and Log-Events
Karl, how do you tacckle that in your EA implementation ?
Didier
This sounds like a tough problem. If we provide an external bridge
then we could create duplicated events - If we don't then for some
events no bridging is taking place ... either way we lose :-(
Maybe we should raise this issue on the osgi-dev list and request some
clarifications on who is supposed to do what exactly?!
Additionally, rather then creating a separate bundle, I'd propose to
include the bridge in the EventAdmin instead. It already does some
other bridging anyways (i.e., Framework-, Bundle-,Service-, and
Log-Events). Does this sound like a good idea?
regards,
Karl
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Karl Pauls
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