Source Code Cross Referenced for JdomNavigator.java in  » Template-Engine » freemarker-2.3.10 » freemarker » ext » xml » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Template Engine » freemarker 2.3.10 » freemarker.ext.xml 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Copyright (c) 2003 The Visigoth Software Society. All rights
003:         * reserved.
004:         *
005:         * Redistribution and use in source and binary forms, with or without
006:         * modification, are permitted provided that the following conditions
007:         * are met:
008:         *
009:         * 1. Redistributions of source code must retain the above copyright
010:         *    notice, this list of conditions and the following disclaimer.
011:         *
012:         * 2. Redistributions in binary form must reproduce the above copyright
013:         *    notice, this list of conditions and the following disclaimer in
014:         *    the documentation and/or other materials provided with the
015:         *    distribution.
016:         *
017:         * 3. The end-user documentation included with the redistribution, if
018:         *    any, must include the following acknowledgement:
019:         *       "This product includes software developed by the
020:         *        Visigoth Software Society (http://www.visigoths.org/)."
021:         *    Alternately, this acknowledgement may appear in the software itself,
022:         *    if and wherever such third-party acknowledgements normally appear.
023:         *
024:         * 4. Neither the name "FreeMarker", "Visigoth", nor any of the names of the 
025:         *    project contributors may be used to endorse or promote products derived
026:         *    from this software without prior written permission. For written
027:         *    permission, please contact visigoths@visigoths.org.
028:         *
029:         * 5. Products derived from this software may not be called "FreeMarker" or "Visigoth"
030:         *    nor may "FreeMarker" or "Visigoth" appear in their names
031:         *    without prior written permission of the Visigoth Software Society.
032:         *
033:         * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
034:         * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
035:         * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
036:         * DISCLAIMED.  IN NO EVENT SHALL THE VISIGOTH SOFTWARE SOCIETY OR
037:         * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
038:         * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
039:         * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
040:         * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
041:         * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
042:         * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
043:         * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
044:         * SUCH DAMAGE.
045:         * ====================================================================
046:         *
047:         * This software consists of voluntary contributions made by many
048:         * individuals on behalf of the Visigoth Software Society. For more
049:         * information on the Visigoth Software Society, please see
050:         * http://www.visigoths.org/
051:         */
052:
053:        package freemarker.ext.xml;
054:
055:        import java.io.IOException;
056:        import java.io.StringWriter;
057:        import java.util.Iterator;
058:        import java.util.List;
059:
060:        import freemarker.template.TemplateModelException;
061:
062:        import org.jaxen.Context;
063:        import org.jaxen.NamespaceContext;
064:        import org.jaxen.jdom.JDOMXPath;
065:        import org.jdom.Element;
066:        import org.jdom.Attribute;
067:        import org.jdom.CDATA;
068:        import org.jdom.Comment;
069:        import org.jdom.DocType;
070:        import org.jdom.Document;
071:        import org.jdom.EntityRef;
072:        import org.jdom.Namespace;
073:        import org.jdom.ProcessingInstruction;
074:        import org.jdom.Text;
075:        import org.jdom.output.XMLOutputter;
076:
077:        /**
078:         * @version $Id: JdomNavigator.java,v 1.3.4.2 2006/11/14 10:42:54 szegedia Exp $ 
079:         * @author Attila Szegedi
080:         */
081:        class JdomNavigator extends Navigator {
082:            private static final XMLOutputter OUTPUT = new XMLOutputter();
083:
084:            JdomNavigator() {
085:            }
086:
087:            void getAsString(Object node, StringWriter sw)
088:                    throws TemplateModelException {
089:                try {
090:                    if (node instanceof  Element) {
091:                        OUTPUT.output((Element) node, sw);
092:                    } else if (node instanceof  Attribute) {
093:                        Attribute attribute = (Attribute) node;
094:                        sw.write(" ");
095:                        sw.write(attribute.getQualifiedName());
096:                        sw.write("=\"");
097:                        sw.write(OUTPUT.escapeAttributeEntities(attribute
098:                                .getValue()));
099:                        sw.write("\"");
100:                    } else if (node instanceof  Text) {
101:                        OUTPUT.output((Text) node, sw);
102:                    } else if (node instanceof  Document) {
103:                        OUTPUT.output((Document) node, sw);
104:                    } else if (node instanceof  ProcessingInstruction) {
105:                        OUTPUT.output((ProcessingInstruction) node, sw);
106:                    } else if (node instanceof  Comment) {
107:                        OUTPUT.output((Comment) node, sw);
108:                    } else if (node instanceof  CDATA) {
109:                        OUTPUT.output((CDATA) node, sw);
110:                    } else if (node instanceof  DocType) {
111:                        OUTPUT.output((DocType) node, sw);
112:                    } else if (node instanceof  EntityRef) {
113:                        OUTPUT.output((EntityRef) node, sw);
114:                    } else {
115:                        throw new TemplateModelException(node.getClass()
116:                                .getName()
117:                                + " is not a core JDOM class");
118:                    }
119:                } catch (IOException e) {
120:                    throw new TemplateModelException(e);
121:                }
122:            }
123:
124:            void getChildren(Object node, String localName,
125:                    String namespaceUri, List result) {
126:                if (node instanceof  Element) {
127:                    Element e = (Element) node;
128:                    if (localName == null) {
129:                        result.addAll(e.getChildren());
130:                    } else {
131:                        result.addAll(e.getChildren(localName, Namespace
132:                                .getNamespace("", namespaceUri)));
133:                    }
134:                } else if (node instanceof  Document) {
135:                    Element root = ((Document) node).getRootElement();
136:                    if (localName == null
137:                            || (equal(root.getName(), localName) && equal(root
138:                                    .getNamespaceURI(), namespaceUri))) {
139:                        result.add(root);
140:                    }
141:                }
142:            }
143:
144:            void getAttributes(Object node, String localName,
145:                    String namespaceUri, List result) {
146:                if (node instanceof  Element) {
147:                    Element e = (Element) node;
148:                    if (localName == null) {
149:                        result.addAll(e.getAttributes());
150:                    } else {
151:                        Attribute attr = e.getAttribute(localName, Namespace
152:                                .getNamespace("", namespaceUri));
153:                        if (attr != null) {
154:                            result.add(attr);
155:                        }
156:                    }
157:                } else if (node instanceof  ProcessingInstruction) {
158:                    ProcessingInstruction pi = (ProcessingInstruction) node;
159:                    if ("target".equals(localName)) {
160:                        result.add(new Attribute("target", pi.getTarget()));
161:                    } else if ("data".equals(localName)) {
162:                        result.add(new Attribute("data", pi.getData()));
163:                    } else {
164:                        result.add(new Attribute(localName, pi
165:                                .getValue(localName)));
166:                    }
167:                } else if (node instanceof  DocType) {
168:                    DocType doctype = (DocType) node;
169:                    if ("publicId".equals(localName)) {
170:                        result.add(new Attribute("publicId", doctype
171:                                .getPublicID()));
172:                    } else if ("systemId".equals(localName)) {
173:                        result.add(new Attribute("systemId", doctype
174:                                .getSystemID()));
175:                    } else if ("elementName".equals(localName)) {
176:                        result.add(new Attribute("elementName", doctype
177:                                .getElementName()));
178:                    }
179:                }
180:            }
181:
182:            void getDescendants(Object node, List result) {
183:                if (node instanceof  Document) {
184:                    Element root = ((Document) node).getRootElement();
185:                    result.add(root);
186:                    getDescendants(root, result);
187:                } else if (node instanceof  Element) {
188:                    getDescendants((Element) node, result);
189:                }
190:            }
191:
192:            private void getDescendants(Element node, List result) {
193:                for (Iterator iter = node.getChildren().iterator(); iter
194:                        .hasNext();) {
195:                    Element subnode = (Element) iter.next();
196:                    result.add(subnode);
197:                    getDescendants(subnode, result);
198:                }
199:            }
200:
201:            Object getParent(Object node) {
202:                if (node instanceof  Element) {
203:                    return ((Element) node).getParent();
204:                }
205:                if (node instanceof  Attribute) {
206:                    return ((Attribute) node).getParent();
207:                }
208:                if (node instanceof  Text) {
209:                    return ((Text) node).getParent();
210:                }
211:                if (node instanceof  ProcessingInstruction) {
212:                    return ((ProcessingInstruction) node).getParent();
213:                }
214:                if (node instanceof  Comment) {
215:                    return ((Comment) node).getParent();
216:                }
217:                if (node instanceof  EntityRef) {
218:                    return ((EntityRef) node).getParent();
219:                }
220:                return null;
221:            }
222:
223:            Object getDocument(Object node) {
224:                if (node instanceof  Element) {
225:                    return ((Element) node).getDocument();
226:                } else if (node instanceof  Attribute) {
227:                    Element parent = ((Attribute) node).getParent();
228:                    return parent == null ? null : parent.getDocument();
229:                } else if (node instanceof  Text) {
230:                    Element parent = ((Text) node).getParent();
231:                    return parent == null ? null : parent.getDocument();
232:                } else if (node instanceof  Document)
233:                    return (Document) node;
234:                else if (node instanceof  ProcessingInstruction) {
235:                    return ((ProcessingInstruction) node).getDocument();
236:                } else if (node instanceof  EntityRef) {
237:                    return ((EntityRef) node).getDocument();
238:                } else if (node instanceof  Comment) {
239:                    return ((Comment) node).getDocument();
240:                }
241:                return null;
242:            }
243:
244:            Object getDocumentType(Object node) {
245:                return node instanceof  Document ? ((Document) node)
246:                        .getDocType() : null;
247:            }
248:
249:            void getContent(Object node, List result) {
250:                if (node instanceof  Element)
251:                    result.addAll(((Element) node).getContent());
252:                else if (node instanceof  Document)
253:                    result.addAll(((Document) node).getContent());
254:            }
255:
256:            String getText(Object node) {
257:                if (node instanceof  Element) {
258:                    return ((Element) node).getTextTrim();
259:                }
260:                if (node instanceof  Attribute) {
261:                    return ((Attribute) node).getValue();
262:                }
263:                if (node instanceof  CDATA) {
264:                    return ((CDATA) node).getText();
265:                }
266:                if (node instanceof  Comment) {
267:                    return ((Comment) node).getText();
268:                }
269:                if (node instanceof  ProcessingInstruction) {
270:                    return ((ProcessingInstruction) node).getData();
271:                }
272:                return null;
273:            }
274:
275:            String getLocalName(Object node) {
276:                if (node instanceof  Element) {
277:                    return ((Element) node).getName();
278:                }
279:                if (node instanceof  Attribute) {
280:                    return ((Attribute) node).getName();
281:                }
282:                if (node instanceof  EntityRef) {
283:                    return ((EntityRef) node).getName();
284:                }
285:                if (node instanceof  ProcessingInstruction) {
286:                    return ((ProcessingInstruction) node).getTarget();
287:                }
288:                if (node instanceof  DocType) {
289:                    return ((DocType) node).getElementName();
290:                }
291:                return null;
292:            }
293:
294:            String getNamespacePrefix(Object node) {
295:                if (node instanceof  Element) {
296:                    return ((Element) node).getNamespacePrefix();
297:                }
298:                if (node instanceof  Attribute) {
299:                    return ((Attribute) node).getNamespacePrefix();
300:                }
301:                return null;
302:            }
303:
304:            String getNamespaceUri(Object node) {
305:                if (node instanceof  Element) {
306:                    return ((Element) node).getNamespaceURI();
307:                }
308:                if (node instanceof  Attribute) {
309:                    return ((Attribute) node).getNamespaceURI();
310:                }
311:                return null;
312:            }
313:
314:            String getType(Object node) {
315:                if (node instanceof  Attribute) {
316:                    return "attribute";
317:                }
318:                if (node instanceof  CDATA) {
319:                    return "cdata";
320:                }
321:                if (node instanceof  Comment) {
322:                    return "comment";
323:                }
324:                if (node instanceof  Document) {
325:                    return "document";
326:                }
327:                if (node instanceof  DocType) {
328:                    return "documentType";
329:                }
330:                if (node instanceof  Element) {
331:                    return "element";
332:                }
333:                if (node instanceof  EntityRef) {
334:                    return "entityReference";
335:                }
336:                if (node instanceof  Namespace) {
337:                    return "namespace";
338:                }
339:                if (node instanceof  ProcessingInstruction) {
340:                    return "processingInstruction";
341:                }
342:                if (node instanceof  Text) {
343:                    return "text";
344:                }
345:                return "unknown";
346:            }
347:
348:            XPathEx createXPathEx(String xpathString)
349:                    throws TemplateModelException {
350:                try {
351:                    return new JDOMXPathEx(xpathString);
352:                } catch (Exception e) {
353:                    throw new TemplateModelException(e);
354:                }
355:            }
356:
357:            private static final class JDOMXPathEx extends JDOMXPath implements 
358:                    XPathEx {
359:                JDOMXPathEx(String path) throws Exception {
360:                    super (path);
361:                }
362:
363:                public List selectNodes(Object object,
364:                        NamespaceContext namespaces)
365:                        throws TemplateModelException {
366:                    Context context = getContext(object);
367:                    context.getContextSupport().setNamespaceContext(namespaces);
368:                    try {
369:                        return selectNodesForContext(context);
370:                    } catch (Exception e) {
371:                        throw new TemplateModelException(e);
372:                    }
373:                }
374:            }
375:        }
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