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.Element;
11 import org.dom4j.QName;
12 import org.dom4j.tree.DefaultElement;
13
14 /**
15 * <p>
16 * <code>UserDataElement</code> support the adornment of a user data object on
17 * an Element or Attribute instance such that the methods {@link#getData}
18 * {@link #setData(Object)}will get and set the values of a user data object.
19 * This can be useful for developers wishing to create XML trees and adorn the
20 * trees with user defined objects.
21 * </p>
22 *
23 * @author <a href="mailto:james.strachan@metastuff.com">James Strachan </a>
24 * @version $Revision: 1.12 $
25 */
26 public class UserDataElement extends DefaultElement {
27 /** The user data object */
28 private Object data;
29
30 public UserDataElement(String name) {
31 super(name);
32 }
33
34 public UserDataElement(QName qname) {
35 super(qname);
36 }
37
38 public Object getData() {
39 return data;
40 }
41
42 public void setData(Object data) {
43 this.data = data;
44 }
45
46 public String toString() {
47 return super.toString() + " userData: " + data;
48 }
49
50 public Object clone() {
51 UserDataElement answer = (UserDataElement) super.clone();
52
53 if (answer != this) {
54 answer.data = getCopyOfUserData();
55 }
56
57 return answer;
58 }
59
60 // Implementation methods
61 // -------------------------------------------------------------------------
62
63 /**
64 * If a deep copy of user data is required whenever the clone() or
65 * createCopy() methods are called on this element then this method should
66 * return a clone of the user data
67 *
68 * @return DOCUMENT ME!
69 */
70 protected Object getCopyOfUserData() {
71 return data;
72 }
73
74 protected Element createElement(String name) {
75 Element answer = getDocumentFactory().createElement(name);
76 answer.setData(getCopyOfUserData());
77
78 return answer;
79 }
80
81 protected Element createElement(QName qName) {
82 Element answer = getDocumentFactory().createElement(qName);
83 answer.setData(getCopyOfUserData());
84
85 return answer;
86 }
87
88 // protected DocumentFactory getDocumentFactory() {
89 // return DOCUMENT_FACTORY;
90 // }
91 }
92
93 /*
94 * Redistribution and use of this software and associated documentation
95 * ("Software"), with or without modification, are permitted provided that the
96 * following conditions are met:
97 *
98 * 1. Redistributions of source code must retain copyright statements and
99 * notices. Redistributions must also contain a copy of this document.
100 *
101 * 2. Redistributions in binary form must reproduce the above copyright notice,
102 * this list of conditions and the following disclaimer in the documentation
103 * and/or other materials provided with the distribution.
104 *
105 * 3. The name "DOM4J" must not be used to endorse or promote products derived
106 * from this Software without prior written permission of MetaStuff, Ltd. For
107 * written permission, please contact dom4j-info@metastuff.com.
108 *
109 * 4. Products derived from this Software may not be called "DOM4J" nor may
110 * "DOM4J" appear in their names without prior written permission of MetaStuff,
111 * Ltd. DOM4J is a registered trademark of MetaStuff, Ltd.
112 *
113 * 5. Due credit should be given to the DOM4J Project - http://www.dom4j.org
114 *
115 * THIS SOFTWARE IS PROVIDED BY METASTUFF, LTD. AND CONTRIBUTORS ``AS IS'' AND
116 * ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
117 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
118 * ARE DISCLAIMED. IN NO EVENT SHALL METASTUFF, LTD. OR ITS CONTRIBUTORS BE
119 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
120 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
121 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
122 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
123 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
124 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
125 * POSSIBILITY OF SUCH DAMAGE.
126 *
127 * Copyright 2001-2005 (C) MetaStuff, Ltd. All Rights Reserved.
128 */
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