AbstractLifeCycleManager.java

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you 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 org.apache.cxf.bus.managers;

import java.util.ListIterator;
import java.util.concurrent.CopyOnWriteArrayList;

/**
 * AbstractLifeCycleManager implementation
 * @param <T> listener class
 */
abstract class AbstractLifeCycleManager<T> {
    protected final CopyOnWriteArrayList<T> listeners;

    AbstractLifeCycleManager() {
        listeners = new CopyOnWriteArrayList<>();
    }

    protected ListIterator<T> reversedListIterator() {
        @SuppressWarnings("unchecked")
        final CopyOnWriteArrayList<T> cloned =  (CopyOnWriteArrayList<T>) listeners.clone();
        return cloned.listIterator(cloned.size());
    }
}