Hi all,
I really like the publish / subscribe concept of EventAdmin. It provides
a great way to decouple senders and receivers. The downside is that the
events are limited to a simple map and using anything else than simple
types for the values is discouraged.
What I am missing is a simple and ideally non intrusive way of sending
Pojos around. What I have in mind is something similar to the JEE
eventing
(http://www.adam-bien.com/roller/abien/entry/java_ee_6_observer_with)
but with string topics rather than matching annoations.
So what I could imagine is something like:
public interface PojoEventAdmin <T> {
void sendEvent(String topic, T event);
void postEvent(String topic, T event);
}
public interface PojoEventHandler <T> {
void handle(String topic, T event);
}
The event handlers could register using the whiteboard pattern like for
EventAdmin. Internally the implementation could then even use the
EventAdmin to transport the objects. This is of course not fully thought
out. Especially I am not sure if the generics would cause problems.
Is there any initiative to do something like this? Perhaps even an
extension of the EventAdmin spec? I have seen the Event framework in
Eclipse 4 which seems similar but I doubt it works outside eclipse.
I would be glad about any hints.
Christian
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