/* * Copyright (c) 2005, John Mettraux, OpenWFE.org * All rights reserved. *  * Redistribution and use in source and binary forms, with or without  * modification, are permitted provided that the following conditions are met: *  * . Redistributions of source code must retain the above copyright notice, this *   list of conditions and the following disclaimer.   *  * . Redistributions in binary form must reproduce the above copyright notice,  *   this list of conditions and the following disclaimer in the documentation  *   and/or other materials provided with the distribution. *  * . Neither the name of the "OpenWFE" nor the names of its contributors may be *   used to endorse or promote products derived from this software without *   specific prior written permission. *  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE  * POSSIBILITY OF SUCH DAMAGE. * * $Id: Set.java,v 1.3 2005/03/21 15:38:41 jmettraux Exp $ *///// Set.java//// john.mettraux@openwfe.org//// generated with // jtmpl 1.1.01 2004/05/19 (john.mettraux@openwfe.org)//package openwfe.org.query.sets;/** * A set that may be positive or negative * * <p><font size=2>CVS Info : * <br>$Author: jmettraux $ * <br>$Id: Set.java,v 1.3 2005/03/21 15:38:41 jmettraux Exp $ </font> * * @author john.mettraux@openwfe.org */public interface Set    extends java.util.Set, Cloneable{    /**     * Returns true if this set contains no element.     */    public boolean isEmpty ();    /**     * Returns true if this set is negative (ie an inverted set).     */    public boolean isNegative ();    /**     * Returns true if the st is positive.     */    public boolean isPositive ();    /**     * Sets the positive/negative state of the set.     */    public void setNegative (boolean b);    /**     * Inverts the state of the set.     */    public void invert ();    /**     * Returns a new (and positive) empty instance of this set.     */    public Set newInstance ();    /**     * Forces implementation to have this clone method.     */    public Object clone ();}