dorkbox.messageBus.SubscriptionMode Maven / Gradle / Ivy
/*
* Copyright 2019 dorkbox, llc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package dorkbox.messageBus;
public
enum SubscriptionMode {
/**
* This is the default.
*
* We use strong references when saving the subscribed listeners (these are the classes & methods that receive messages).
*
* In certain environments (ie: spring), it is desirable to use weak references -- so that there are no memory leaks during
* the container lifecycle (or, more specifically, so one doesn't have to manually manage the memory).
*/
StrongReferences,
/**
* Using weak references is a tad slower than using strong references, since there are additional steps taken when there are orphaned
* references (when GC occurs) that have to be cleaned up. This cleanup occurs during message publication.
*/
WeakReferences
}