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1 package org.ejen.util;
22
23 import org.ejen.EjenConstants;
24 import java.util.Properties  ;
25 import java.io.InputStream ;
26 import java.io.FileInputStream ;
27 import java.io.ByteArrayInputStream ;
28 import javax.xml.parsers.DocumentBuilderFactory ;
29 import javax.xml.parsers.DocumentBuilder ;
30 import org.xml.sax.InputSource ;
31 import org.w3c.dom.Node ;
32 import org.w3c.dom.Element ;
33 import org.w3c.dom.NamedNodeMap ;
34 import org.w3c.dom.Document ;
35 import org.w3c.dom.DOMException ;
36 import org.apache.xml.utils.WrappedRuntimeException;
37
38
43 public class DOMUtil {
44 public static final String S_PY_PROPERTY_NODE_NAME = "property";
45 public static final String S_PY_NAME = "name";
46 public static final String S_PY_VALUE = "value";
47
48
54 public static String getAttribute(Node n, String name) {
55 if (n != null && name != null) {
56 NamedNodeMap nnm = n.getAttributes();
57
58 if (nnm != null) {
59 Node attr = nnm.getNamedItem(name);
60
61 if (attr != null) {
62 return attr.getNodeValue();
63 }
64 }
65 }
66 return null;
67 }
68
69
84 public static String getProperty(Node n, String name) {
85 if (n != null && name != null) {
86 String [] prop = getProperty(n);
87
88 if (prop != null && name.equals(prop[0])) {
89 return prop[1];
90 }
91 }
92 return null;
93 }
94
95
110 public static String [] getProperty(Node n) {
111 if (n != null) {
112 if (S_PY_PROPERTY_NODE_NAME.equals(n.getNodeName())) {
113 NamedNodeMap nnm = n.getAttributes();
114
115 if (nnm != null) {
116 Node name = nnm.getNamedItem(S_PY_NAME);
117 Node value = nnm.getNamedItem(S_PY_VALUE);
118
119 if (name != null && value != null) {
120 return new String [] {name.getNodeValue(),
121 value.getNodeValue()};
122 }
123 }
124 }
125 }
126 return null;
127 }
128
129
144 public static Properties getChildProperties(Node n) {
145 return getChildProperties(n, new Properties ());
146 }
147
148
164 public static Properties getChildProperties(Node parent, Properties props) {
165 if (props != null) {
166 for (Node n = parent.getFirstChild(); n != null; n = n.getNextSibling()) {
167 String [] prop = getProperty(n);
168
169 if (prop != null) {
170 props.setProperty(prop[0], prop[1]);
171 }
172 }
173 }
174 return props;
175 }
176
177
182 public static Document newDocument() {
183 try {
184 DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
185
186 dbf.setNamespaceAware(true);
187 DocumentBuilder db = dbf.newDocumentBuilder();
188
189 return db.newDocument();
190 } catch (Exception e) {
191 throw new WrappedRuntimeException(e);
192 }
193 }
194
195
201 public static Document parseXMLFile(String name) {
202 InputStream inputs = null;
203
204 try {
205 inputs = new FileInputStream (name);
206 DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
207
208 dbf.setNamespaceAware(true);
209 return dbf.newDocumentBuilder().parse(new InputSource (inputs));
210 } catch (Exception e) {
211 throw new WrappedRuntimeException(e);
212 }
213 finally {
214 if (inputs != null) {
215 try {
216 inputs.close();
217 } catch (Exception e) {}
218 finally {
219 inputs = null;
220 }
221 }
222 }
223 }
224
225
233 public static Document parseXMLString(String xmlString) {
234 InputStream inputs = null;
235
236 try {
237 if (xmlString == null) {
238 inputs = new ByteArrayInputStream (EjenConstants.DEFAULT_XML_DATA.getBytes(EjenConstants.DEFAULT_XML_DATA_ENCODING));
239 } else {
240 inputs = new ByteArrayInputStream (xmlString.getBytes(EjenConstants.DEFAULT_XML_DATA_ENCODING));
241 }
242 DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
243
244 dbf.setNamespaceAware(true);
245 return dbf.newDocumentBuilder().parse(new InputSource (inputs));
246 } catch (Exception e) {
247 throw new WrappedRuntimeException(e);
248 }
249 }
250
251
259 public static Node createNode(Document doc, Node parent, String nodeName) {
260 try {
261 Element elt = doc.createElement(nodeName);
262
263 parent.appendChild(elt);
264 return elt;
265 } catch (DOMException e) {
266 throw new WrappedRuntimeException(e);
267 }
268 }
269
270
280 public static Node createCDATANode(Document doc, Node parent, String nodeName, String nodeValue) {
281 try {
282 Element elt = doc.createElement(nodeName);
283
284 elt.appendChild(doc.createCDATASection(nodeValue));
285 parent.appendChild(elt);
286 return elt;
287 } catch (DOMException e) {
288 throw new WrappedRuntimeException(e);
289 }
290 }
291
292
301 public static Node createCDATANode(Document doc, String nodeName, String nodeValue) {
302 try {
303 Element elt = doc.createElement(nodeName);
304
305 elt.appendChild(doc.createCDATASection(nodeValue));
306 return elt;
307 } catch (DOMException e) {
308 throw new WrappedRuntimeException(e);
309 }
310 }
311
312
321 public static Node createTextNode(Document doc, String nodeName, String nodeValue) {
322 try {
323 Element elt = doc.createElement(nodeName);
324
325 elt.appendChild(doc.createTextNode(nodeValue));
326 return elt;
327 } catch (DOMException e) {
328 throw new WrappedRuntimeException(e);
329 }
330 }
331 }
332 |
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