Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
DefaultAndExpr |
|
| 2.0;2 |
1 | /* | |
2 | * $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/expr/DefaultAndExpr.java,v 1.16 2006/11/30 18:49:27 elharo Exp $ | |
3 | * $Revision: 1.16 $ | |
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: DefaultAndExpr.java,v 1.16 2006/11/30 18:49:27 elharo Exp $ | |
46 | */ | |
47 | ||
48 | package org.jaxen.expr; | |
49 | ||
50 | import org.jaxen.Context; | |
51 | import org.jaxen.JaxenException; | |
52 | import org.jaxen.Navigator; | |
53 | import org.jaxen.function.BooleanFunction; | |
54 | ||
55 | class DefaultAndExpr extends DefaultLogicalExpr | |
56 | { | |
57 | /** | |
58 | * | |
59 | */ | |
60 | private static final long serialVersionUID = -5237984010263103742L; | |
61 | ||
62 | DefaultAndExpr(Expr lhs, | |
63 | Expr rhs) | |
64 | { | |
65 | 248 | super( lhs, |
66 | rhs ); | |
67 | 248 | } |
68 | ||
69 | public String getOperator() | |
70 | { | |
71 | 338 | return "and"; |
72 | } | |
73 | ||
74 | public String toString() | |
75 | { | |
76 | 0 | return "[(DefaultAndExpr): " + getLHS() + ", " + getRHS() + "]"; |
77 | } | |
78 | ||
79 | public Object evaluate(Context context) throws JaxenException | |
80 | { | |
81 | 422 | Navigator nav = context.getNavigator(); |
82 | 422 | Boolean lhsValue = BooleanFunction.evaluate( getLHS().evaluate( context ), nav ); |
83 | ||
84 | 422 | if ( !lhsValue.booleanValue() ) |
85 | { | |
86 | 190 | return Boolean.FALSE; |
87 | } | |
88 | ||
89 | // Short circuits are required in XPath. "The right operand is not | |
90 | // evaluated if the left operand evaluates to false." | |
91 | 232 | Boolean rhsValue = BooleanFunction.evaluate( getRHS().evaluate( context ), nav ); |
92 | ||
93 | 232 | if ( !rhsValue.booleanValue() ) |
94 | { | |
95 | 6 | return Boolean.FALSE; |
96 | } | |
97 | ||
98 | 226 | return Boolean.TRUE; |
99 | } | |
100 | ||
101 | ||
102 | } |