/*
* JBoss, Home of Professional Open Source
* Copyright 2005-2008, Red Hat Middleware LLC, and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This 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 software 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 software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.messaging.core.list;
import java.util.Iterator;
import java.util.List;
/**
* A type of linked list which maintains items according to a priority
* and allows adding and removing of elements at both ends, and peeking
*
* @author <a href="mailto:tim.fox@jboss.com>Tim Fox</a>
* @version <tt>$Revision: 1174 $</tt>
*
* $Id: PrioritizedDeque.java 1174 2006-08-02 14:14:32Z timfox $
*/
public interface PriorityLinkedList<T> extends Iterable<T>
{
void addFirst(T t, int priority);
void addLast(T t, int priority);
T removeFirst();
T peekFirst();
List<T> getAll();
void clear();
int size();
Iterator<T> iterator();
boolean isEmpty();
}