An interface for listener objects that receive notifications on fired events.
Description
The IEventListener interface allows you to define actions to be taken by listener objects after receiving a notification on a fired event.
Instance methods
onEvent
A method called when events this listener is subscribed to are fired.
void onEvent(IContext context, IEvent event, Parameters args)
- context: IContext - a context to trace execution through a call chain
- event: IEvent - (optional) fired event.
- args: Parameters - event arguments.
Examples
{
public class MyListener implements IEventListener {
private void onEvent(IContext context, IEvent event,Parameters args) {
System.out.println("Fired event " + event.getName());
}
}
Event event = new Event("myevent");
event.addListener(new MyListener());
event.notify("123", Parameters.fromTuples("param1", "ABC"));
// Console output: Fired event myevent
}