1 /*
2 * Copyright 2001-2005 (C) MetaStuff, Ltd. All Rights Reserved.
3 *
4 * This software is open source.
5 * See the bottom of this file for the licence.
6 */
7
8 package org.dom4j.util;
9
10 import org.dom4j.Attribute;
11 import org.dom4j.Element;
12 import org.dom4j.QName;
13
14 /***
15 * <p>
16 * <code>AttributeHelper</code> a number of helper methods for working with
17 * attribute values.
18 * </p>
19 *
20 * @author <a href="mailto:jstrachan@apache.org">James Strachan </a>
21 * @version $Revision: 1.7 $
22 */
23 public class AttributeHelper {
24 protected AttributeHelper() {
25 }
26
27 public static boolean booleanValue(Element element, String attributeName) {
28 return booleanValue(element.attribute(attributeName));
29 }
30
31 public static boolean booleanValue(Element element, QName attributeQName) {
32 return booleanValue(element.attribute(attributeQName));
33 }
34
35 protected static boolean booleanValue(Attribute attribute) {
36 if (attribute == null) {
37 return false;
38 }
39
40 Object value = attribute.getData();
41
42 if (value == null) {
43 return false;
44 } else if (value instanceof Boolean) {
45 Boolean b = (Boolean) value;
46
47 return b.booleanValue();
48 } else {
49 return "true".equalsIgnoreCase(value.toString());
50 }
51 }
52 }
53
54 /*
55 * Redistribution and use of this software and associated documentation
56 * ("Software"), with or without modification, are permitted provided that the
57 * following conditions are met:
58 *
59 * 1. Redistributions of source code must retain copyright statements and
60 * notices. Redistributions must also contain a copy of this document.
61 *
62 * 2. Redistributions in binary form must reproduce the above copyright notice,
63 * this list of conditions and the following disclaimer in the documentation
64 * and/or other materials provided with the distribution.
65 *
66 * 3. The name "DOM4J" must not be used to endorse or promote products derived
67 * from this Software without prior written permission of MetaStuff, Ltd. For
68 * written permission, please contact dom4j-info@metastuff.com.
69 *
70 * 4. Products derived from this Software may not be called "DOM4J" nor may
71 * "DOM4J" appear in their names without prior written permission of MetaStuff,
72 * Ltd. DOM4J is a registered trademark of MetaStuff, Ltd.
73 *
74 * 5. Due credit should be given to the DOM4J Project - http://www.dom4j.org
75 *
76 * THIS SOFTWARE IS PROVIDED BY METASTUFF, LTD. AND CONTRIBUTORS ``AS IS'' AND
77 * ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
78 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
79 * ARE DISCLAIMED. IN NO EVENT SHALL METASTUFF, LTD. OR ITS CONTRIBUTORS BE
80 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
81 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
82 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
83 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
84 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
85 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
86 * POSSIBILITY OF SUCH DAMAGE.
87 *
88 * Copyright 2001-2005 (C) MetaStuff, Ltd. All Rights Reserved.
89 */