/*
 * $Header$
 * $Revision: 1252 $
 * $Date: 2006-11-09 08:21:05 -0800 (Thu, 09 Nov 2006) $
 *
 * ====================================================================
 *
 * Copyright 2000-2002 bob mcwhirter & James Strachan.
 * 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 Jaxen Project 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.
 *
 * ====================================================================
 * This software consists of voluntary contributions made by many 
 * individuals on behalf of the Jaxen Project and was originally 
 * created by bob mcwhirter <bob@werken.com> and 
 * James Strachan <jstrachan@apache.org>.  For more information on the 
 * Jaxen Project, please see <http://www.jaxen.org/>.
 * 
 * $Id: LogicalExpr.java 1252 2006-11-09 16:21:05Z elharo $
 */
package org.jaxen.expr;

/**
 * Represents an XPath logical expression. This represents productions
 * <a href="http://www.w3.org/TR/xpath#NT-OrExpr">21   OrExpr</a> and 
 * <a href="http://www.w3.org/TR/xpath#NT-AndExpr">22 AndExpr</a> in the XPath specification.
 * 
 * <table><tr valign="baseline">
 * <td><a name="NT-OrExpr"></a>[21]&nbsp;&nbsp;&nbsp;</td><td>OrExpr</td><td>&nbsp;&nbsp;&nbsp;::=&nbsp;&nbsp;&nbsp;</td><td><a href="http://www.w3.org/TR/xpath#NT-AndExpr">AndExpr</a></td><td></td>
 * </tr>
 * <tr valign="baseline">
 * <td></td><td></td><td></td><td>| <a href="http://www.w3.org/TR/xpath#NT-OrExpr">OrExpr</a> 'or' <a href="http://www.w3.org/TR/xpath#NT-AndExpr">AndExpr</a></td><td></td>
 * </tr>
 * <tr valign="baseline">
 * <td><a name="NT-AndExpr"></a>[22]&nbsp;&nbsp;&nbsp;</td><td>AndExpr</td><td>&nbsp;&nbsp;&nbsp;::=&nbsp;&nbsp;&nbsp;</td><td><a href="http://www.w3.org/TR/xpath#NT-EqualityExpr">EqualityExpr</a></td><td></td>
 * </tr>
 * <tr valign="baseline">
 * <td></td><td></td><td></td><td>| <a href="http://www.w3.org/TR/xpath#NT-AndExpr">AndExpr</a> 'and' <a href="http://www.w3.org/TR/xpath#NT-EqualityExpr">EqualityExpr</a></td><td></td>
 * </tr></table>
 * 
 */
public interface LogicalExpr extends BinaryExpr {
}
