[Proposal] New notification implementation

For those interested I've sent a patch for implementing a new notification mechanism. It's available here: http://jira.xwiki.org/jira/browse/XWIKI-1522 I'd love to get feedback on this. Here's what I say in there: " At the place where you want to register for an event: getObservationManager().addListener(new DocumentSaveEvent ("DocumentToWatch"), listener); At the place where you want to receive for an event: public class MyListener implements EventListener { public void onEvent(Event event, Object source, Object data) { ... } } At the place where you want to fire notifications to event listeners: getObservationManager().notify(new DocumentSaveEvent("SomeDocument"), "some source", "some data"); It's easily extensible and you can create all sorts of events as it's fully generic. " Have a look at the implementation. You'll see I have even introduced the notion of EventFilter so that we can have regex when registering interest for an event. Thanks -Vincent