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.datatype;
9
10 import com.sun.msv.datatype.DatabindableDatatype;
11 import com.sun.msv.datatype.SerializationContext;
12 import com.sun.msv.datatype.xsd.XSDatatype;
13
14 import org.dom4j.Element;
15 import org.dom4j.Namespace;
16 import org.dom4j.QName;
17 import org.dom4j.tree.AbstractAttribute;
18
19 import org.relaxng.datatype.DatatypeException;
20 import org.relaxng.datatype.ValidationContext;
21
22 /**
23 * <p>
24 * <code>DatatypeAttribute</code> represents an Attribute which supports the
25 * <a href="http://www.w3.org/TR/xmlschema-2/">XML Schema Data Types </a>
26 * specification.
27 * </p>
28 *
29 * @author <a href="mailto:jstrachan@apache.org">James Strachan </a>
30 * @version $Revision: 1.9 $
31 */
32 public class DatatypeAttribute extends AbstractAttribute implements
33 SerializationContext, ValidationContext {
34 /** The parent <code>Element</code> of the <code>Attribute</code> */
35 private Element parent;
36
37 /** The <code>QName</code> for this element */
38 private QName qname;
39
40 /** The <code>XSDatatype</code> of the <code>Attribute</code> */
41 private XSDatatype datatype;
42
43 /** The data (Object) value of the <code>Attribute</code> */
44 private Object data;
45
46 /** The text value of the <code>Attribute</code> */
47 private String text;
48
49 public DatatypeAttribute(QName qname, XSDatatype datatype) {
50 this.qname = qname;
51 this.datatype = datatype;
52 }
53
54 public DatatypeAttribute(QName qname, XSDatatype datatype, String text) {
55 this.qname = qname;
56 this.datatype = datatype;
57 this.text = text;
58 this.data = convertToValue(text);
59 }
60
61 public String toString() {
62 return getClass().getName() + hashCode() + " [Attribute: name "
63 + getQualifiedName() + " value \"" + getValue() + "\" data: "
64 + getData() + "]";
65 }
66
67 /**
68 * Returns the MSV XSDatatype for this node
69 *
70 * @return DOCUMENT ME!
71 */
72 public XSDatatype getXSDatatype() {
73 return datatype;
74 }
75
76 // SerializationContext interface
77 // -------------------------------------------------------------------------
78 public String getNamespacePrefix(String uri) {
79 Element parentElement = getParent();
80
81 if (parentElement != null) {
82 Namespace namespace = parentElement.getNamespaceForURI(uri);
83
84 if (namespace != null) {
85 return namespace.getPrefix();
86 }
87 }
88
89 return null;
90 }
91
92 // ValidationContext interface
93 // -------------------------------------------------------------------------
94 public String getBaseUri() {
95 // XXXX: could we use a Document for this?
96 return null;
97 }
98
99 public boolean isNotation(String notationName) {
100 // XXXX: no way to do this yet in dom4j so assume false
101 return false;
102 }
103
104 public boolean isUnparsedEntity(String entityName) {
105 // XXXX: no way to do this yet in dom4j so assume valid
106 return true;
107 }
108
109 public String resolveNamespacePrefix(String prefix) {
110 // first lets see if this is our attribute's prefix
111 if (prefix.equals(getNamespacePrefix())) {
112 return getNamespaceURI();
113 } else {
114 Element parentElement = getParent();
115
116 if (parentElement != null) {
117 Namespace namespace = parentElement
118 .getNamespaceForPrefix(prefix);
119
120 if (namespace != null) {
121 return namespace.getURI();
122 }
123 }
124 }
125
126 return null;
127 }
128
129 // Attribute interface
130 // -------------------------------------------------------------------------
131 public QName getQName() {
132 return qname;
133 }
134
135 public String getValue() {
136 return text;
137 }
138
139 public void setValue(String value) {
140 validate(value);
141
142 this.text = value;
143 this.data = convertToValue(value);
144 }
145
146 public Object getData() {
147 return data;
148 }
149
150 public void setData(Object data) {
151 String s = datatype.convertToLexicalValue(data, this);
152 validate(s);
153 this.text = s;
154 this.data = data;
155 }
156
157 public Element getParent() {
158 return parent;
159 }
160
161 public void setParent(Element parent) {
162 this.parent = parent;
163 }
164
165 public boolean supportsParent() {
166 return true;
167 }
168
169 public boolean isReadOnly() {
170 return false;
171 }
172
173 // Implementation methods
174 // -------------------------------------------------------------------------
175 protected void validate(String txt) throws IllegalArgumentException {
176 try {
177 datatype.checkValid(txt, this);
178 } catch (DatatypeException e) {
179 throw new IllegalArgumentException(e.getMessage());
180 }
181 }
182
183 protected Object convertToValue(String txt) {
184 if (datatype instanceof DatabindableDatatype) {
185 DatabindableDatatype bindable = (DatabindableDatatype) datatype;
186
187 return bindable.createJavaObject(txt, this);
188 } else {
189 return datatype.createValue(txt, this);
190 }
191 }
192 }
193
194 /*
195 * Redistribution and use of this software and associated documentation
196 * ("Software"), with or without modification, are permitted provided that the
197 * following conditions are met:
198 *
199 * 1. Redistributions of source code must retain copyright statements and
200 * notices. Redistributions must also contain a copy of this document.
201 *
202 * 2. Redistributions in binary form must reproduce the above copyright notice,
203 * this list of conditions and the following disclaimer in the documentation
204 * and/or other materials provided with the distribution.
205 *
206 * 3. The name "DOM4J" must not be used to endorse or promote products derived
207 * from this Software without prior written permission of MetaStuff, Ltd. For
208 * written permission, please contact dom4j-info@metastuff.com.
209 *
210 * 4. Products derived from this Software may not be called "DOM4J" nor may
211 * "DOM4J" appear in their names without prior written permission of MetaStuff,
212 * Ltd. DOM4J is a registered trademark of MetaStuff, Ltd.
213 *
214 * 5. Due credit should be given to the DOM4J Project - http://www.dom4j.org
215 *
216 * THIS SOFTWARE IS PROVIDED BY METASTUFF, LTD. AND CONTRIBUTORS ``AS IS'' AND
217 * ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
218 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
219 * ARE DISCLAIMED. IN NO EVENT SHALL METASTUFF, LTD. OR ITS CONTRIBUTORS BE
220 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
221 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
222 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
223 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
224 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
225 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
226 * POSSIBILITY OF SUCH DAMAGE.
227 *
228 * Copyright 2001-2005 (C) MetaStuff, Ltd. All Rights Reserved.
229 */