| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package dom; |
| |
| import javax.xml.namespace.QName; |
| import javax.xml.parsers.DocumentBuilder; |
| import javax.xml.parsers.DocumentBuilderFactory; |
| |
| import org.w3c.dom.DOMImplementation; |
| import org.w3c.dom.Document; |
| import org.w3c.dom.Element; |
| import org.w3c.dom.ElementTraversal; |
| |
| /** |
| * This sample illustrates how to use the org.w3c.dom.ElementTraversal API. |
| * |
| * @author Michael Glavassevich, IBM |
| * |
| * @version $Id$ |
| */ |
| public class ElementPrinter { |
| |
| public static void main(String[] argv) { |
| |
| if (argv.length == 0) { |
| printUsage(); |
| System.exit(1); |
| } |
| |
| try { |
| DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance(); |
| dbf.setNamespaceAware(true); |
| dbf.setExpandEntityReferences(false); |
| DocumentBuilder db = dbf.newDocumentBuilder(); |
| Document doc = db.parse(argv[0]); |
| |
| DOMImplementation domImpl = doc.getImplementation(); |
| if (domImpl.hasFeature("ElementTraversal", "1.0")) { |
| print(doc.getDocumentElement(), 0); |
| } |
| else { |
| System.err.println("The DOM implementation does not claim support for ElementTraversal."); |
| } |
| } |
| catch (Exception ex) { |
| ex.printStackTrace(); |
| } |
| } |
| |
| private static void print(Element e, int depth) { |
| do { |
| ElementTraversal et = (ElementTraversal) e; |
| for (int i = 0; i < depth; ++i) { |
| System.out.print("--"); |
| } |
| System.out.print("--> ["); |
| System.out.print(new QName(e.getNamespaceURI(), e.getLocalName())); |
| System.out.println("], Child Element Count = " + et.getChildElementCount()); |
| Element firstElementChild = et.getFirstElementChild(); |
| if (firstElementChild != null) { |
| print(firstElementChild, depth + 1); |
| } |
| e = et.getNextElementSibling(); |
| } |
| while (e != null); |
| } |
| |
| private static void printUsage() { |
| System.err.println("usage: java dom.ElementPrinter uri"); |
| } |
| |
| } |