/**
* Removes a listener from the multicaster
*
* @param listener the listener to remove
*/
public void removeApplicationListener(ApplicationListener listener) {
for (Iterator iterator = listeners.iterator(); iterator.hasNext(); ) {
ApplicationListener applicationListener = (ApplicationListener) iterator.next();
if (applicationListener instanceof AsynchronousEventListener) {
if (((AsynchronousEventListener) applicationListener).getListener().equals(listener)) {
listeners.remove(applicationListener);
return;
}
} else {
if (applicationListener.equals(listener)) {
listeners.remove(applicationListener);
return;
}
}
}
listeners.remove(listener);
}
/**
* Method is used to dispatch events to listeners registered with the EventManager or dispatches
* events to Mule depending on the type and state of the event received. If the event is not a
* Mule event it will be dispatched to any listeners registered that are NOT MuleEventListeners.
* If the event is a Mule event and there is no source event attached to it, it is assumed that
* the event was dispatched by an object in the context using context.publishEvent() and will be
* dispatched by Mule. If the event does have a source event attached to it, it is assumed that
* the event was dispatched by Mule and will be delivered to any listeners subscribed to the
* event.
*
* @param e application event received by the context
*/
public void multicastEvent(ApplicationEvent e) {
MuleApplicationEvent muleEvent = null;
// if the context gets refreshed we need to reinitialise
if (e instanceof ContextRefreshedEvent) {
// If the manager is being initialised from another context
// don't try and initialise Mule
if (MuleManager.isInstanciated() && !MuleManager.getInstance().isInitialised()) {
try {
registerMulticasterDescriptor();
} catch (UMOException ex) {
throw new MuleRuntimeException(SpringMessages.failedToReinitMule(), ex);
}
} else {
initMule();
}
} else if (e instanceof ContextClosedEvent) {
MuleManager.getInstance().dispose();
return;
} else if (e instanceof MuleApplicationEvent) {
muleEvent = (MuleApplicationEvent) e;
// If there is no Mule event the event didn't originate from Mule
// so its an outbound event
if (muleEvent.getMuleEventContext() == null) {
try {
dispatchEvent(muleEvent);
} catch (ApplicationEventException e1) {
exceptionListener.exceptionThrown(e1);
}
return;
}
}
for (Iterator iterator = listeners.iterator(); iterator.hasNext(); ) {
ApplicationListener listener = (ApplicationListener) iterator.next();
if (muleEvent != null) {
// As the asynchronous listener wraps the real listener we need to
// check the
// type of the wrapped listener, but invoke the Async listener
if (listener instanceof AsynchronousEventListener) {
AsynchronousEventListener asyncListener = (AsynchronousEventListener) listener;
if (asyncListener.getListener() instanceof MuleSubscriptionEventListener) {
if (isSubscriptionMatch(
muleEvent.getEndpoint(),
((MuleSubscriptionEventListener) asyncListener.getListener()).getSubscriptions())) {
asyncListener.onApplicationEvent(muleEvent);
}
} else if (asyncListener.getListener() instanceof MuleEventListener) {
asyncListener.onApplicationEvent(muleEvent);
} else if (!(asyncListener.getListener() instanceof MuleEventListener)) {
asyncListener.onApplicationEvent(e);
}
// Synchronous Event listener Checks
} else if (listener instanceof MuleSubscriptionEventListener) {
if (isSubscriptionMatch(
muleEvent.getEndpoint(),
((MuleSubscriptionEventListener) listener).getSubscriptions())) {
listener.onApplicationEvent(muleEvent);
}
} else if (listener instanceof MuleEventListener) {
listener.onApplicationEvent(muleEvent);
}
} else if (listener instanceof AsynchronousEventListener
&& !(((AsynchronousEventListener) listener).getListener() instanceof MuleEventListener)) {
listener.onApplicationEvent(e);
} else if (!(listener instanceof MuleEventListener)) {
listener.onApplicationEvent(e);
} else {
// Finally only propagate the Application event if the
// ApplicationEvent interface is explicitly implemented
for (int i = 0; i < listener.getClass().getInterfaces().length; i++) {
if (listener.getClass().getInterfaces()[i].equals(ApplicationListener.class)) {
listener.onApplicationEvent(e);
break;
}
}
}
}
}
