HHH-14869 Fix CallbackRegistryImpl#registerCallbacks considering all given callbacks have the same type

Author: yrodiere

hibernate-core/src/main/java/org/hibernate/jpa/event/internal/CallbackRegistryImpl.java

@@ -41,13 +41,15 @@ public void registerCallbacks(Class entityClass, Callback[] callbacks) {
 			return;
 		}
 
-		final HashMap<Class, Callback[]> map = determineAppropriateCallbackMap( callbacks[0].getCallbackType() );
-		Callback[] entityCallbacks = map.get( entityClass );
-
-		if ( entityCallbacks != null ) {
-			callbacks = ArrayHelper.join( entityCallbacks, callbacks );
+		for ( Callback callback : callbacks ) {
+			final HashMap<Class, Callback[]> map = determineAppropriateCallbackMap( callback.getCallbackType() );
+			Callback[] entityCallbacks = map.get( entityClass );
+			if ( entityCallbacks == null ) {
+				entityCallbacks = new Callback[0];
+			}
+			entityCallbacks = ArrayHelper.join( entityCallbacks, callback );
+			map.put( entityClass, entityCallbacks );
 		}
-		map.put( entityClass, callbacks );
 	}
 
 	@Override