001: /*
002: * Copyright (c) 1998-2007 Caucho Technology -- all rights reserved
003: *
004: * This file is part of Resin(R) Open Source
005: *
006: * Each copy or derived work must preserve the copyright notice and this
007: * notice unmodified.
008: *
009: * Resin Open Source is free software; you can redistribute it and/or modify
010: * it under the terms of the GNU General Public License as published by
011: * the Free Software Foundation; either version 2 of the License, or
012: * (at your option) any later version.
013: *
014: * Resin Open Source is distributed in the hope that it will be useful,
015: * but WITHOUT ANY WARRANTY; without even the implied warranty of
016: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
017: * of NON-INFRINGEMENT. See the GNU General Public License for more
018: * details.
019: *
020: * You should have received a copy of the GNU General Public License
021: * along with Resin Open Source; if not, write to the
022: *
023: * Free Software Foundation, Inc.
024: * 59 Temple Place, Suite 330
025: * Boston, MA 02111-1307 USA
026: *
027: * @author Emil Ong
028: */
029:
030: package com.caucho.jaxb.property;
031:
032: import java.io.IOException;
033: import java.util.ArrayList;
034:
035: import javax.xml.XMLConstants;
036: import javax.xml.bind.JAXBException;
037: import javax.xml.bind.Marshaller;
038: import javax.xml.bind.Unmarshaller;
039: import javax.xml.namespace.QName;
040: import javax.xml.namespace.NamespaceContext;
041: import javax.xml.stream.XMLStreamReader;
042: import javax.xml.stream.XMLStreamWriter;
043: import javax.xml.stream.XMLStreamException;
044:
045: import org.w3c.dom.Document;
046: import org.w3c.dom.Node;
047:
048: import com.caucho.jaxb.BinderImpl;
049: import com.caucho.jaxb.JAXBUtil;
050: import com.caucho.jaxb.NodeIterator;
051: import com.caucho.jaxb.mapping.Namer;
052: import com.caucho.util.L10N;
053: import com.caucho.xml.stream.StaxUtil;
054:
055: /**
056: * a qname property
057: */
058: public class QNameProperty extends Property {
059: public static final QName SCHEMA_TYPE = new QName(
060: XMLConstants.W3C_XML_SCHEMA_NS_URI, "QName", "xsd");
061:
062: private static final L10N L = new L10N(QNameProperty.class);
063:
064: public static final QNameProperty PROPERTY = new QNameProperty();
065:
066: private int _nsCounter = 0;
067:
068: public void write(Marshaller m, XMLStreamWriter out, Object obj,
069: Namer namer) throws IOException, XMLStreamException,
070: JAXBException {
071: QName qname = namer.getQName(obj);
072: StaxUtil.writeStartElement(out, qname);
073:
074: if (obj != null) {
075: QName name = (QName) obj;
076:
077: String namespace = name.getNamespaceURI();
078: String prefix = name.getPrefix();
079:
080: // check if we need to declare this namespace prefix
081: if (namespace != null && !"".equals(namespace)) {
082: String declaredPrefix = out.getPrefix(namespace);
083:
084: // 6 cases: the given prefix can be "" or not ""
085: // and the declared prefix can be null, default (""), or not ""
086:
087: if (declaredPrefix == null) {
088: if ("".equals(prefix)) {
089: // use a dummy prefix... can use "n" all the time since we enter
090: // and leave the element without any children... unless the name
091: // of the element itself has a namespace with prefix "n"
092: if ("n".equals(qname.getPrefix()))
093: prefix = "d";
094: else
095: prefix = "n";
096:
097: out.writeNamespace(prefix, namespace);
098: } else {
099: // just write the given prefix
100: out.writeNamespace(prefix, namespace);
101: }
102: } else if ("".equals(declaredPrefix)) {
103: if (!"".equals(prefix)) {
104: // need to declare this prefix
105: out.writeNamespace(prefix, namespace);
106: }
107: // else if prefix == "" or prefix == null, do nothing
108: } else {
109: if ("".equals(prefix)) {
110: // take on existing prefix
111: prefix = declaredPrefix;
112: } else if (!prefix.equals(declaredPrefix)) {
113: // the given prefix doesn't match the existing one, so declare it
114: out.writeNamespace(prefix, namespace);
115: }
116: }
117: }
118:
119: if (prefix == null || "".equals(prefix))
120: out.writeCharacters(name.getLocalPart());
121: else
122: out.writeCharacters(prefix + ":" + name.getLocalPart());
123: }
124:
125: StaxUtil.writeEndElement(out, qname);
126: }
127:
128: public Object bindFrom(BinderImpl binder, NodeIterator node,
129: Object previous) throws JAXBException {
130: throw new UnsupportedOperationException();
131: }
132:
133: public Object readAttribute(XMLStreamReader in, int i)
134: throws JAXBException {
135: return resolveQName(in.getAttributeValue(i), in
136: .getNamespaceContext());
137: }
138:
139: // Can't use CDataProperty because we need access to the namespace map
140: public Object read(Unmarshaller u, XMLStreamReader in,
141: Object previous) throws IOException, XMLStreamException,
142: JAXBException {
143: in.next();
144:
145: Object ret = null;
146:
147: if (in.getEventType() == in.CHARACTERS) {
148: String text = in.getText();
149: ret = resolveQName(text, in.getNamespaceContext());
150:
151: // essentially a nextTag() that handles end of document gracefully
152: while (in.hasNext()) {
153: in.next();
154:
155: if (in.getEventType() == in.END_ELEMENT)
156: break;
157: }
158: }
159:
160: // essentially a nextTag() that handles end of document gracefully
161: while (in.hasNext()) {
162: in.next();
163:
164: if (in.getEventType() == in.START_ELEMENT
165: || in.getEventType() == in.END_ELEMENT)
166: break;
167: }
168:
169: return ret;
170: }
171:
172: public Node bindTo(BinderImpl binder, Node node, Object obj,
173: Namer namer) throws JAXBException {
174: throw new UnsupportedOperationException();
175: }
176:
177: // XXX default namespace?
178: private QName resolveQName(String text, NamespaceContext context)
179: throws JAXBException {
180: int colon = text.indexOf(':');
181:
182: if (colon < 0)
183: return new QName(text);
184: else {
185: String prefix = text.substring(0, colon);
186:
187: // NOTE!!! The Xerces StAX requires the prefixes to be interned for
188: // some reason...
189: String namespace = context.getNamespaceURI(prefix.intern());
190:
191: if (namespace == null)
192: throw new JAXBException(L.l(
193: "No known namespace for prefix '{0}'", prefix));
194:
195: String localName = text.substring(colon + 1);
196:
197: if ("".equals(localName))
198: throw new JAXBException(L
199: .l("Malformed QName: empty localName"));
200:
201: return new QName(namespace, localName, prefix);
202: }
203: }
204:
205: public QName getSchemaType() {
206: return SCHEMA_TYPE;
207: }
208: }
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