/* XXL: The eXtensible and fleXible Library for data processing
Copyright (C) 2000-2011 Prof. Dr. Bernhard Seeger
Head of the Database Research Group
Department of Mathematics and Computer Science
University of Marburg
Germany
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 3 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, see <http://www.gnu.org/licenses/>.
http://code.google.com/p/xxl/
*/
package xxl.core.collections.queues;
import xxl.core.functions.Function;
/**
* The interface LIFO queue represents a LIFO (<i>last in, first out</i>)
* iteration over a collection of elements (also known as a
* <i>sequence</i>) with a <tt>peek</tt> method. This interface predefines
* a <i>LIFO strategy</i> for addition and removal of elements.
*
* @param <E> the type of the elements of this queue.
* @see xxl.core.collections.queues.Queue
*/
public interface LIFOQueue<E> extends Queue<E> {
/**
* A factory method to create a default LIFO queue (see contract for
* {@link Queue#FACTORY_METHOD FACTORY_METHOD} in interface Queue).
* This field is set to
* <code>{@link StackQueue#FACTORY_METHOD StackQueue.FACTORY_METHOD}</code>.
*/
public static final Function FACTORY_METHOD = StackQueue.FACTORY_METHOD;
}