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16 package org.apache.ws.jaxme.impl;
17
18 import javax.xml.bind.DatatypeConverterInterface;
19 import javax.xml.bind.ValidationEvent;
20 import javax.xml.bind.ValidationEventHandler;
21 import javax.xml.bind.ValidationEventLocator;
22 import javax.xml.bind.helpers.PrintConversionEventImpl;
23 import javax.xml.bind.helpers.ValidationEventLocatorImpl;
24
25 import org.apache.ws.jaxme.XMLConstants;
26 import org.apache.ws.jaxme.util.NamespaceSupport;
27 import org.xml.sax.Attributes  ;
28 import org.xml.sax.ContentHandler ;
29 import org.xml.sax.SAXException ;
30 import org.xml.sax.helpers.AttributesImpl ;
31
32
33
37 public class JMSAXDriverController {
38 private static final Attributes ZERO_ATTRIBUTES = new AttributesImpl ();
39 private final JMMarshallerImpl marshaller;
40 private final DatatypeConverterInterface converter;
41 private final ContentHandler target;
42 private final NamespaceSupport nss = new NamespaceSupport();
43 private int cnt;
44
45
47 public JMMarshallerImpl getJMMarshaller() {
48 return marshaller;
49 }
50
51
54 public ContentHandler getTarget() {
55 return target;
56 }
57
58
60 public NamespaceSupport getNamespaceContext() {
61 return nss;
62 }
63
64
66 public JMSAXDriverController(JMMarshallerImpl pMarshaller, ContentHandler pTarget) throws SAXException {
67 marshaller = pMarshaller;
68 target = pTarget;
69 converter = marshaller.getDatatypeConverter();
70 }
71
72
75 public DatatypeConverterInterface getDatatypeConverter() {
76 return converter;
77 }
78
79 protected String getNewPrefix(String pURI, String pSuggestedPrefix) {
80 if (pSuggestedPrefix == null || pSuggestedPrefix.length() == 0) {
81 if (!nss.isPrefixDeclared("")) {
82 nss.declarePrefix("", pURI);
83 return "";
84 }
85 pSuggestedPrefix = "p";
86 }
87 String pc = pSuggestedPrefix;
88 for (;;) {
89 if (!nss.isPrefixDeclared(pc)) {
90 nss.declarePrefix(pc, pURI);
91 return pc;
92 }
93 pc = pSuggestedPrefix + ++cnt;
94 }
95 }
96
97 protected String getPreferredPrefix(JMSAXDriver pDriver, String pURI) {
98 if (pDriver != null) {
99 String prefix = pDriver.getPreferredPrefix(pURI);
100 if (prefix != null) {
101 return prefix;
102 }
103 }
104 if (XMLConstants.XML_SCHEMA_URI.equals(pURI)) {
105 return "xsi";
106 } else {
107 return null;
108 }
109 }
110
111 protected String getElementQName(JMSAXDriver pDriver, String pPrefix,
112 String pNamespaceURI, String pLocalName) throws SAXException {
113 if (pNamespaceURI == null) {
114 pNamespaceURI = "";
115 }
116 String prefix = nss.getPrefix(pNamespaceURI);
117 if (prefix == null) {
118 if (pPrefix != null) {
119 prefix = pPrefix;
120 } else {
121 prefix = getNewPrefix(pNamespaceURI, getPreferredPrefix(pDriver, pNamespaceURI));
122 }
123 nss.declarePrefix(prefix, pNamespaceURI);
124 getTarget().startPrefixMapping(prefix, pNamespaceURI);
125 }
126 if (prefix == null || "".equals(prefix)) {
127 return pLocalName;
128 } else {
129 return prefix + ":" + pLocalName;
130 }
131 }
132
133 protected String getElementQName(JMSAXDriver pDriver, String pNamespaceURI,
134 String pLocalName)
135 throws SAXException {
136 if (pNamespaceURI == null) {
137 pNamespaceURI = "";
138 }
139 String prefix = nss.getPrefix(pNamespaceURI);
140 if (prefix == null) {
141 prefix = getNewPrefix(pNamespaceURI, getPreferredPrefix(pDriver, pNamespaceURI));
142 nss.declarePrefix(prefix, pNamespaceURI);
143 getTarget().startPrefixMapping(prefix, pNamespaceURI);
144 }
145 if (prefix == null || "".equals(prefix)) {
146 return pLocalName;
147 } else {
148 return prefix + ":" + pLocalName;
149 }
150 }
151
152
155 public String getAttrQName(JMSAXDriver pDriver, String pNamespaceURI,
156 String pLocalName) throws SAXException {
157 if (pNamespaceURI == null) {
158 pNamespaceURI = "";
159 }
160 String prefix = nss.getAttributePrefix(pNamespaceURI);
161 if (prefix == null) {
162 prefix = getPreferredPrefix(pDriver, pNamespaceURI);
163 if (prefix == null) {
164 prefix = getNewPrefix(pNamespaceURI, "p");
165 }
166 getTarget().startPrefixMapping(prefix, pNamespaceURI);
167 }
168 if (prefix == null || "".equals(prefix)) {
169 return pLocalName;
170 } else {
171 return prefix + ":" + pLocalName;
172 }
173 }
174
175 protected void addSchemaLocationAttributes(JMSAXDriver pDriver,
176 AttributesImpl pAttrs) throws SAXException {
177 JMMarshallerImpl m = getJMMarshaller();
178 String schemaLocation = m.getSchemaLocation();
179 String schemaLocationAttribute;
180 if (schemaLocation != null) {
181 schemaLocationAttribute = XMLConstants.XML_SCHEMA_NS_ATTR;
182 } else {
183 schemaLocation = m.getNoNamespaceSchemaLocation();
184 if (schemaLocation != null) {
185 schemaLocationAttribute = XMLConstants.XML_SCHEMA_NO_NS_ATTR;
186 } else {
187 schemaLocationAttribute = null;
188 }
189 }
190 if (schemaLocation != null) {
191 String qName = getAttrQName(pDriver, XMLConstants.XML_SCHEMA_URI, schemaLocationAttribute);
192 pAttrs.addAttribute(XMLConstants.XML_SCHEMA_URI, schemaLocationAttribute,
193 qName, "CDATA", schemaLocation);
194 }
195 }
196
197
203 public void marshal(JMSAXDriver pDriver, String pPrefix,
204 String pNamespaceURI, String pLocalName,
205 Object pElement) throws SAXException {
206 int context = nss.getContext();
207 String qName = getElementQName(pDriver, pPrefix, pNamespaceURI, pLocalName);
208 AttributesImpl attrs = pDriver.getAttributes(this, pElement);
209 addSchemaLocationAttributes(pDriver, attrs);
210 ContentHandler h = getTarget();
211 h.startElement(pNamespaceURI, pLocalName, qName, attrs);
212 pDriver.marshalChilds(this, h, pElement);
213 h.endElement(pNamespaceURI, pLocalName, qName);
214 restoreContext(context);
215 }
216
217
223 public void marshal(JMSAXDriver pDriver, String pNamespaceURI,
224 String pLocalName, Object pElement) throws SAXException {
225 int context = nss.getContext();
226 String qName = getElementQName(pDriver, pNamespaceURI, pLocalName);
227 AttributesImpl attrs = pDriver.getAttributes(this, pElement);
228 ContentHandler h = getTarget();
229 h.startElement(pNamespaceURI, pLocalName, qName, attrs);
230 pDriver.marshalChilds(this, h, pElement);
231 h.endElement(pNamespaceURI, pLocalName, qName);
232 restoreContext(context);
233 }
234
235
237 public void marshalSimpleChild(JMSAXDriver pDriver, String pNamespaceURI,
238 String pLocalName, String pValue)
239 throws SAXException {
240 int context = nss.getContext();
241 String qName = getElementQName(pDriver, pNamespaceURI, pLocalName);
242 ContentHandler h = getTarget();
243 h.startElement(pNamespaceURI, pLocalName, qName, ZERO_ATTRIBUTES);
244 if (pValue != null && pValue.length() > 0) {
245 h.characters(pValue.toCharArray(), 0, pValue.length());
246 }
247 h.endElement(pNamespaceURI, pLocalName, qName);
248 restoreContext(context);
249 }
250
251 private void restoreContext(int pContext) throws SAXException {
252 NamespaceSupport nss = getNamespaceContext();
253 ContentHandler h = getTarget();
254 for (;;) {
255 String prefix = nss.checkContext(pContext);
256 if (prefix == null) {
257 return;
258 }
259 h.endPrefixMapping(prefix);
260 }
261 }
262
263 public void printConversionEvent(Object pObject, String pMsg, Exception pException) throws SAXException {
264 ValidationEventHandler handler = getJMMarshaller().getEventHandler();
265 if (handler != null) {
266 ValidationEventLocator locator = new ValidationEventLocatorImpl(pObject);
267 PrintConversionEventImpl event = new PrintConversionEventImpl(ValidationEvent.FATAL_ERROR, pMsg, locator);
268 if (handler.handleEvent(event)) {
269 return;
270 }
271 }
272 throw new SAXException (pMsg, pException);
273 }
274 }
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