1 /*
2 * $Header$
3 * $Revision: 1252 $
4 * $Date: 2006-11-09 08:21:05 -0800 (Thu, 09 Nov 2006) $
5 *
6 * ====================================================================
7 *
8 * Copyright 2000-2002 bob mcwhirter & James Strachan.
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions are
13 * met:
14 *
15 * * Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 *
18 * * Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 *
22 * * Neither the name of the Jaxen Project nor the names of its
23 * contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
27 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
29 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
30 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
31 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
32 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
33 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
34 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
35 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
36 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37 *
38 * ====================================================================
39 * This software consists of voluntary contributions made by many
40 * individuals on behalf of the Jaxen Project and was originally
41 * created by bob mcwhirter <bob@werken.com> and
42 * James Strachan <jstrachan@apache.org>. For more information on the
43 * Jaxen Project, please see <http://www.jaxen.org/>.
44 *
45 * $Id: BinaryExpr.java 1252 2006-11-09 16:21:05Z elharo $
46 */
47
48
49
50 package org.jaxen.expr;
51
52
53 /**
54 * Represents a binary expression.
55 * This does not match anything in the XPath 1.0 grammar, but in Jaxen
56 * it includes the usual binary operations such as addition, multiplication,
57 * logical and, logical or, and so forth.
58 *
59 */
60 public interface BinaryExpr extends Expr
61 {
62
63 /**
64 * Returns the left-hand side of the binary expression.
65 *
66 * @return the left hand side expression
67 */
68 Expr getLHS();
69
70
71 /**
72 * Returns the right-hand side of the binary expression.
73 *
74 * @return the right-hand side expression
75 */
76 Expr getRHS();
77
78 /**
79 * Returns the operator for the binary expression such as "+" or
80 * "div".
81 *
82 * @return the operator for the expression
83 */
84 String getOperator();
85
86 }