content: package org.apache.archiva.xml;
  
  /*
   * 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.
   */
  
  import org.w3c.dom.*;
  
  import javax.xml.parsers.DocumentBuilder;
  import javax.xml.parsers.DocumentBuilderFactory;
  import javax.xml.parsers.ParserConfigurationException;
  
  public class XmlUtil {
  
  
      public static Document createDocument() throws ParserConfigurationException {
          DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
          DocumentBuilder builder = factory.newDocumentBuilder();
          return builder.newDocument();
      }
  
      public static Element addChild(Document doc, Element parent, String name) {
          Element el = doc.createElement(name);
          parent.appendChild(el);
          return el;
      }
  
      public static Element addChild(Element parent, String name) {
          Document doc = parent.getOwnerDocument();
          Element el = doc.createElement(name);
          parent.appendChild(el);
          return el;
      }
  
      public static String getText(Node element) {
          if (element!=null) {
              element.normalize();
              try {
                  String txt = element.getTextContent();
                  if (txt!=null) {
                      return txt.trim();
                  }
              } catch (DOMException e) {
                  return "";
              }
          }
          return "";
      }
  
      public static Node getChild(Element parent, String name) {
          NodeList elList = parent.getElementsByTagName(name);
          if (elList.getLength()>0) {
              return elList.item(0);
          } else {
              return null;
          }
      }
  
      public static String getChildText(Element parent, String name) {
          return getText(getChild(parent, name));
      }
  
  }
  