zdm/event-bus
zdm/event-bus
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Simplify binding access calls in EventBus

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This commit is contained in:
Kai S. K. Engelbart 2021-02-15 09:25:16 +01:00
parent ebc11555f6
commit e040f6ab1b
Signed by: kske
GPG Key ID: 8BEB13EC5DF7EF13
1 changed files with 10 additions and 13 deletions
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23
event-bus-core/src/main/java/dev/kske/eventbus/core/EventBus.java
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@ -51,11 +51,12 @@ public final class EventBus {
return instance;
}
private final Map<Class<? extends IEvent>, TreeSet<EventHandler>> bindings
= new ConcurrentHashMap<>();
private final Set<EventListener> registeredListeners = ConcurrentHashMap.newKeySet();
private final ThreadLocal<DispatchState> dispatchState
= ThreadLocal.withInitial(DispatchState::new);
private final Map<Class<? extends IEvent>, TreeSet<EventHandler>> bindings =
new ConcurrentHashMap<>();
private final Set<EventListener> registeredListeners =
ConcurrentHashMap.newKeySet();
private final ThreadLocal<DispatchState> dispatchState =
ThreadLocal.withInitial(DispatchState::new);
/**
* Dispatches an event to all event handlers registered for it in descending order of their
@ -97,9 +98,7 @@ public final class EventBus {
private List<EventHandler> getHandlersFor(Class<? extends IEvent> eventClass) {
// Get handlers defined for the event class
Set<EventHandler> handlers
= bindings.containsKey(eventClass) ? bindings.get(eventClass)
: new TreeSet<>();
Set<EventHandler> handlers = bindings.getOrDefault(eventClass, new TreeSet<>());
// Get subtype handlers
for (var binding : bindings.entrySet())
@ -151,20 +150,18 @@ public final class EventBus {
// Initialize and bind the handler
var handler = new EventHandler(listener, method, annotation);
if (!bindings.containsKey(handler.getEventType()))
bindings.put(handler.getEventType(), new TreeSet<>());
bindings.putIfAbsent(handler.getEventType(), new TreeSet<>());
logger.log(Level.DEBUG, "Binding event handler {0}", handler);
bindings.get(handler.getEventType())
.add(handler);
handlerBound = true;
}
if(!handlerBound)
if (!handlerBound)
logger.log(
Level.WARNING,
"No event handlers bound for event listener {0}",
listener.getClass().getName()
);
listener.getClass().getName());
}
/**