Source Code Cross Referenced for DOMBuilder.java in  » Workflow-Engines » OpenWFE » org » jdom » input » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Workflow Engines » OpenWFE » org.jdom.input 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*--
002:
003:         $Id: DOMBuilder.java,v 1.1 2005/04/27 09:32:41 wittek Exp $
004:
005:         Copyright (C) 2000-2004 Jason Hunter & Brett McLaughlin.
006:         All rights reserved.
007:
008:         Redistribution and use in source and binary forms, with or without
009:         modification, are permitted provided that the following conditions
010:         are met:
011:
012:         1. Redistributions of source code must retain the above copyright
013:            notice, this list of conditions, and the following disclaimer.
014:
015:         2. Redistributions in binary form must reproduce the above copyright
016:            notice, this list of conditions, and the disclaimer that follows
017:            these conditions in the documentation and/or other materials
018:            provided with the distribution.
019:
020:         3. The name "JDOM" must not be used to endorse or promote products
021:            derived from this software without prior written permission.  For
022:            written permission, please contact <request_AT_jdom_DOT_org>.
023:
024:         4. Products derived from this software may not be called "JDOM", nor
025:            may "JDOM" appear in their name, without prior written permission
026:            from the JDOM Project Management <request_AT_jdom_DOT_org>.
027:
028:         In addition, we request (but do not require) that you include in the
029:         end-user documentation provided with the redistribution and/or in the
030:         software itself an acknowledgement equivalent to the following:
031:             "This product includes software developed by the
032:              JDOM Project (http://www.jdom.org/)."
033:         Alternatively, the acknowledgment may be graphical using the logos
034:         available at http://www.jdom.org/images/logos.
035:
036:         THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
037:         WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
038:         OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
039:         DISCLAIMED.  IN NO EVENT SHALL THE JDOM AUTHORS OR THE PROJECT
040:         CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
041:         SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
042:         LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
043:         USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
044:         ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
045:         OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
046:         OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
047:         SUCH DAMAGE.
048:
049:         This software consists of voluntary contributions made by many
050:         individuals on behalf of the JDOM Project and was originally
051:         created by Jason Hunter <jhunter_AT_jdom_DOT_org> and
052:         Brett McLaughlin <brett_AT_jdom_DOT_org>.  For more information
053:         on the JDOM Project, please see <http://www.jdom.org/>.
054:
055:         */
056:
057:        package org.jdom.input;
058:
059:        import org.jdom.*;
060:        import org.jdom.Document;
061:        import org.jdom.Element;
062:        import org.w3c.dom.*;
063:
064:        /**
065:         * Builds a JDOM {@link org.jdom.Document org.jdom.Document} from a pre-existing
066:         * DOM {@link org.w3c.dom.Document org.w3c.dom.Document}. Also handy for testing
067:         * builds from files to sanity check {@link SAXBuilder}.
068:         *
069:         * @version $Revision: 1.1 $, $Date: 2005/04/27 09:32:41 $
070:         * @author  Brett McLaughlin
071:         * @author  Jason Hunter
072:         * @author  Philip Nelson
073:         * @author  Kevin Regan
074:         * @author  Yusuf Goolamabbas
075:         * @author  Dan Schaffer
076:         * @author  Bradley S. Huffman
077:         */
078:        public class DOMBuilder {
079:
080:            private static final String CVS_ID = "@(#) $RCSfile: DOMBuilder.java,v $ $Revision: 1.1 $ $Date: 2005/04/27 09:32:41 $ $Name:  $";
081:
082:            /** Adapter class to use */
083:            private String adapterClass;
084:
085:            /** The factory for creating new JDOM objects */
086:            private JDOMFactory factory = new DefaultJDOMFactory();
087:
088:            /**
089:             * This creates a new DOMBuilder which will attempt to first locate
090:             * a parser via JAXP, then will try to use a set of default parsers.
091:             * The underlying parser will not validate.
092:             */
093:            public DOMBuilder() {
094:            }
095:
096:            /**
097:             * This creates a new DOMBuilder using the specified DOMAdapter
098:             * implementation as a way to choose the underlying parser.
099:             * The underlying parser will not validate.
100:             *
101:             * @param adapterClass <code>String</code> name of class
102:             *                     to use for DOM building.
103:             */
104:            public DOMBuilder(String adapterClass) {
105:                this .adapterClass = adapterClass;
106:            }
107:
108:            /*
109:             * This sets a custom JDOMFactory for the builder.  Use this to build
110:             * the tree with your own subclasses of the JDOM classes.
111:             *
112:             * @param factory <code>JDOMFactory</code> to use
113:             */
114:            public void setFactory(JDOMFactory factory) {
115:                this .factory = factory;
116:            }
117:
118:            /**
119:             * Returns the current {@link org.jdom.JDOMFactory} in use.
120:             * @return the factory in use
121:             */
122:            public JDOMFactory getFactory() {
123:                return factory;
124:            }
125:
126:            /**
127:             * This will build a JDOM tree from an existing DOM tree.
128:             *
129:             * @param domDocument <code>org.w3c.dom.Document</code> object
130:             * @return <code>Document</code> - JDOM document object.
131:             */
132:            public Document build(org.w3c.dom.Document domDocument) {
133:                Document doc = factory.document(null);
134:                buildTree(domDocument, doc, null, true);
135:                return doc;
136:            }
137:
138:            /**
139:             * This will build a JDOM Element from an existing DOM Element
140:             *
141:             * @param domElement <code> org.w3c.dom.Element</code> object
142:             * @return <code>Element</code> - JDOM Element object
143:             */
144:            public org.jdom.Element build(org.w3c.dom.Element domElement) {
145:                Document doc = factory.document(null);
146:                buildTree(domElement, doc, null, true);
147:                return doc.getRootElement();
148:            }
149:
150:            /**
151:             * This takes a DOM <code>Node</code> and builds up
152:             * a JDOM tree, recursing until the DOM tree is exhausted
153:             * and the JDOM tree results.
154:             *
155:             * @param node <code>Code</node> to examine.
156:             * @param doc JDOM <code>Document</code> being built.
157:             * @param current <code>Element</code> that is current parent.
158:             * @param atRoot <code>boolean</code> indicating whether at root level.
159:             */
160:            private void buildTree(Node node, Document doc, Element current,
161:                    boolean atRoot) {
162:                // Recurse through the tree
163:                switch (node.getNodeType()) {
164:                case Node.DOCUMENT_NODE:
165:                    NodeList nodes = node.getChildNodes();
166:                    for (int i = 0, size = nodes.getLength(); i < size; i++) {
167:                        buildTree(nodes.item(i), doc, current, true);
168:                    }
169:                    break;
170:
171:                case Node.ELEMENT_NODE:
172:                    String nodeName = node.getNodeName();
173:                    String prefix = "";
174:                    String localName = nodeName;
175:                    int colon = nodeName.indexOf(':');
176:                    if (colon >= 0) {
177:                        prefix = nodeName.substring(0, colon);
178:                        localName = nodeName.substring(colon + 1);
179:                    }
180:
181:                    // Get element's namespace
182:                    Namespace ns = null;
183:                    String uri = node.getNamespaceURI();
184:                    if (uri == null) {
185:                        ns = (current == null) ? Namespace.NO_NAMESPACE
186:                                : current.getNamespace(prefix);
187:                    } else {
188:                        ns = Namespace.getNamespace(prefix, uri);
189:                    }
190:
191:                    Element element = factory.element(localName, ns);
192:
193:                    if (atRoot) {
194:                        // If at root, set as document root
195:                        doc.setRootElement(element); // XXX should we use a factory call?
196:                    } else {
197:                        // else add to parent element
198:                        factory.addContent(current, element);
199:                    }
200:
201:                    // Add namespaces
202:                    NamedNodeMap attributeList = node.getAttributes();
203:                    int attsize = attributeList.getLength();
204:
205:                    for (int i = 0; i < attsize; i++) {
206:                        Attr att = (Attr) attributeList.item(i);
207:
208:                        String attname = att.getName();
209:                        if (attname.startsWith("xmlns")) {
210:                            String attPrefix = "";
211:                            colon = attname.indexOf(':');
212:                            if (colon >= 0) {
213:                                attPrefix = attname.substring(colon + 1);
214:                            }
215:
216:                            String attvalue = att.getValue();
217:
218:                            Namespace declaredNS = Namespace.getNamespace(
219:                                    attPrefix, attvalue);
220:
221:                            // Add as additional namespaces if it's different
222:                            // than this element's namespace (perhaps we should
223:                            // also have logic not to mark them as additional if
224:                            // it's been done already, but it probably doesn't
225:                            // matter)
226:                            if (prefix.equals(attPrefix)) {
227:                                element.setNamespace(declaredNS);
228:                            } else {
229:                                factory.addNamespaceDeclaration(element,
230:                                        declaredNS);
231:                            }
232:                        }
233:                    }
234:
235:                    // Add attributes
236:                    for (int i = 0; i < attsize; i++) {
237:                        Attr att = (Attr) attributeList.item(i);
238:
239:                        String attname = att.getName();
240:
241:                        if (!attname.startsWith("xmlns")) {
242:                            String attPrefix = "";
243:                            String attLocalName = attname;
244:                            colon = attname.indexOf(':');
245:                            if (colon >= 0) {
246:                                attPrefix = attname.substring(0, colon);
247:                                attLocalName = attname.substring(colon + 1);
248:                            }
249:
250:                            String attvalue = att.getValue();
251:
252:                            // Get attribute's namespace
253:                            Namespace attns = null;
254:                            if ("".equals(attPrefix)) {
255:                                attns = Namespace.NO_NAMESPACE;
256:                            } else {
257:                                attns = element.getNamespace(attPrefix);
258:                            }
259:
260:                            Attribute attribute = factory.attribute(
261:                                    attLocalName, attvalue, attns);
262:                            factory.setAttribute(element, attribute);
263:                        }
264:                    }
265:
266:                    // Recurse on child nodes
267:                    // The list should never be null nor should it ever contain
268:                    // null nodes, but some DOM impls are broken
269:                    NodeList children = node.getChildNodes();
270:                    if (children != null) {
271:                        int size = children.getLength();
272:                        for (int i = 0; i < size; i++) {
273:                            Node item = children.item(i);
274:                            if (item != null) {
275:                                buildTree(item, doc, element, false);
276:                            }
277:                        }
278:                    }
279:                    break;
280:
281:                case Node.TEXT_NODE:
282:                    String data = node.getNodeValue();
283:                    factory.addContent(current, factory.text(data));
284:                    break;
285:
286:                case Node.CDATA_SECTION_NODE:
287:                    String cdata = node.getNodeValue();
288:                    factory.addContent(current, factory.cdata(cdata));
289:                    break;
290:
291:                case Node.PROCESSING_INSTRUCTION_NODE:
292:                    if (atRoot) {
293:                        factory.addContent(doc, factory.processingInstruction(
294:                                node.getNodeName(), node.getNodeValue()));
295:                    } else {
296:                        factory.addContent(current, factory
297:                                .processingInstruction(node.getNodeName(), node
298:                                        .getNodeValue()));
299:                    }
300:                    break;
301:
302:                case Node.COMMENT_NODE:
303:                    if (atRoot) {
304:                        factory.addContent(doc, factory.comment(node
305:                                .getNodeValue()));
306:                    } else {
307:                        factory.addContent(current, factory.comment(node
308:                                .getNodeValue()));
309:                    }
310:                    break;
311:
312:                case Node.ENTITY_REFERENCE_NODE:
313:                    EntityRef entity = factory.entityRef(node.getNodeName());
314:                    factory.addContent(current, entity);
315:                    break;
316:
317:                case Node.ENTITY_NODE:
318:                    // ??
319:                    break;
320:
321:                case Node.DOCUMENT_TYPE_NODE:
322:                    DocumentType domDocType = (DocumentType) node;
323:                    String publicID = domDocType.getPublicId();
324:                    String systemID = domDocType.getSystemId();
325:                    String internalDTD = domDocType.getInternalSubset();
326:
327:                    DocType docType = factory.docType(domDocType.getName());
328:                    docType.setPublicID(publicID);
329:                    docType.setSystemID(systemID);
330:                    docType.setInternalSubset(internalDTD);
331:
332:                    factory.addContent(doc, docType);
333:                    break;
334:                }
335:            }
336:        }
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