package org.red5.server;
import java.lang.ref.WeakReference;
import java.util.AbstractList;
import java.util.ArrayList;
import java.util.Collection;
/*
* RED5 Open Source Flash Server - http://www.osflash.org/red5
*
* Copyright (c) 2006-2009 by respective authors (see below). All rights reserved.
*
* This library is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free Software
* Foundation; either version 2.1 of the License, or (at your option) any later
* version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
* PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along
* with this library; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/**
* Client list, implemented using weak references to prevent memory leaks.
*
* @author Paul Gregoire (mondain@gmail.com)
* @param <E> type of class
*/
public class ClientList<E> extends AbstractList<E> implements ListMBean {
private static final long serialVersionUID = -3127064371410565215L;
private ArrayList<WeakReference<E>> items;
public ClientList() {
items = new ArrayList<WeakReference<E>>();
}
public ClientList(Collection<E> c) {
items = new ArrayList<WeakReference<E>>();
addAll(0, c);
}
public boolean add(E element) {
return items.add(new WeakReference<E>(element));
}
public void add(int index, E element) {
items.add(index, new WeakReference<E>(element));
}
public int size() {
removeReleased();
return items.size();
}
public E get(int index) {
return ((WeakReference<E>) items.get(index)).get();
}
private void removeReleased() {
for (WeakReference<E> ref : items) {
if (ref.get() == null) {
items.remove(ref);
}
}
}
}