1 /*
2 * $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/expr/DefaultDivExpr.java,v 1.14 2006/11/30 18:49:27 elharo Exp $
3 * $Revision: 1.14 $
4 * $Date: 2006/11/30 18:49:27 $
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: DefaultDivExpr.java,v 1.14 2006/11/30 18:49:27 elharo Exp $
46 */
47
48
49 package org.jaxen.expr;
50
51 import org.jaxen.Context;
52 import org.jaxen.JaxenException;
53 import org.jaxen.function.NumberFunction;
54
55 class DefaultDivExpr extends DefaultMultiplicativeExpr
56 {
57 /***
58 *
59 */
60 private static final long serialVersionUID = 6318739386201615441L;
61
62 DefaultDivExpr(Expr lhs,
63 Expr rhs)
64 {
65 super( lhs,
66 rhs );
67 }
68
69 public String getOperator()
70 {
71 return "div";
72 }
73
74 public Object evaluate(Context context) throws JaxenException
75 {
76 Number lhsValue = NumberFunction.evaluate( getLHS().evaluate( context ),
77 context.getNavigator() );
78 Number rhsValue = NumberFunction.evaluate( getRHS().evaluate( context ),
79 context.getNavigator() );
80
81 double result = lhsValue.doubleValue() / rhsValue.doubleValue();
82
83 return new Double( result );
84 }
85
86 }