| /** |
| * 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.common.util; |
| |
| import java.util.Collection; |
| import java.util.concurrent.CopyOnWriteArrayList; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| public final class ModCountCopyOnWriteArrayList<T> extends CopyOnWriteArrayList<T> { |
| private static final long serialVersionUID = 1783937035760941219L; |
| private AtomicInteger modCount = new AtomicInteger(); |
| |
| public ModCountCopyOnWriteArrayList() { |
| super(); |
| } |
| public ModCountCopyOnWriteArrayList(Collection<? extends T> c) { |
| super(c); |
| if (c instanceof ModCountCopyOnWriteArrayList) { |
| modCount.set(((ModCountCopyOnWriteArrayList<?>)c).getModCount()); |
| } |
| } |
| |
| public int getModCount() { |
| return modCount.get(); |
| } |
| |
| public void setModCount(int i) { |
| modCount.set(i); |
| } |
| |
| @Override |
| public void add(int index, T element) { |
| super.add(index, element); |
| modCount.incrementAndGet(); |
| } |
| |
| @Override |
| public boolean add(T element) { |
| if (super.add(element)) { |
| modCount.incrementAndGet(); |
| return true; |
| } |
| return false; |
| } |
| |
| @Override |
| public boolean addAll(Collection<? extends T> c) { |
| if (super.addAll(c)) { |
| modCount.incrementAndGet(); |
| return true; |
| } |
| return false; |
| } |
| |
| @Override |
| public boolean addAll(int index, Collection<? extends T> c) { |
| if (super.addAll(index, c)) { |
| modCount.incrementAndGet(); |
| return true; |
| } |
| return false; |
| } |
| |
| @Override |
| public int addAllAbsent(Collection<? extends T> c) { |
| int i = super.addAllAbsent(c); |
| if (i > 0) { |
| modCount.incrementAndGet(); |
| } |
| return i; |
| } |
| |
| @Override |
| public boolean addIfAbsent(T element) { |
| if (super.addIfAbsent(element)) { |
| modCount.incrementAndGet(); |
| return true; |
| } |
| return false; |
| } |
| |
| @Override |
| public void clear() { |
| super.clear(); |
| modCount.incrementAndGet(); |
| } |
| |
| @Override |
| public T remove(int index) { |
| T t = super.remove(index); |
| if (t != null) { |
| modCount.incrementAndGet(); |
| } |
| return t; |
| } |
| |
| @Override |
| public boolean remove(Object o) { |
| if (super.remove(o)) { |
| modCount.incrementAndGet(); |
| return true; |
| } |
| return false; |
| } |
| |
| @Override |
| public boolean removeAll(Collection<?> c) { |
| if (super.removeAll(c)) { |
| modCount.incrementAndGet(); |
| return true; |
| } |
| return false; |
| } |
| |
| @Override |
| public boolean retainAll(Collection<?> c) { |
| if (super.retainAll(c)) { |
| modCount.incrementAndGet(); |
| return true; |
| } |
| return false; |
| } |
| |
| @Override |
| public int hashCode() { |
| return super.hashCode() + modCount.get(); |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (o instanceof ModCountCopyOnWriteArrayList) { |
| return super.equals(o) && modCount.get() |
| == ((ModCountCopyOnWriteArrayList<?>)o).getModCount(); |
| } |
| return false; |
| } |
| |
| } |
| |