cvs commit: incubator-geronimo/modules/kernel/src/java/org/apache/geronimo/kernel/deployment/service XMLUtil.java

[da...@apache.org]

dain        2003/10/24 15:45:33

  Added:       modules/kernel/src/java/org/apache/geronimo/kernel/deployment/service
                        XMLUtil.java
  Log:
  Initial revision
  
  Revision  Changes    Path
  1.1                  incubator-geronimo/modules/kernel/src/java/org/apache/geronimo/kernel/deployment/service/XMLUtil.java
  
  Index: XMLUtil.java
  ===================================================================
  /* ====================================================================
   * The Apache Software License, Version 1.1
   *
   * Copyright (c) 2003 The Apache Software Foundation.  All rights
   * reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * 3. The end-user documentation included with the redistribution,
   *    if any, must include the following acknowledgment:
   *       "This product includes software developed by the
   *        Apache Software Foundation (http://www.apache.org/)."
   *    Alternately, this acknowledgment may appear in the software itself,
   *    if and wherever such third-party acknowledgments normally appear.
   *
   * 4. The names "Apache" and "Apache Software Foundation" and
   *    "Apache Geronimo" must not be used to endorse or promote products
   *    derived from this software without prior written permission. For
   *    written permission, please contact apache@apache.org.
   *
   * 5. Products derived from this software may not be called "Apache",
   *    "Apache Geronimo", nor may "Apache" appear in their name, without
   *    prior written permission of the Apache Software Foundation.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   *
   * ====================================================================
   */
  package org.apache.geronimo.kernel.deployment.service;
  
  import org.w3c.dom.Element;
  import org.w3c.dom.NodeList;
  import org.w3c.dom.Node;
  
  /**
   * Utility methods for dealing with xml.
   *
   * @version $Revision: 1.1 $ $Date: 2003/10/24 22:45:33 $
   */
  public class XMLUtil {
      /**
       * Return the content of an argument node.
       * If the node contains an Element, then the Element is returned;
       * otherwise the content of the node (after stripping comments and trimming)
       * is returned, or null if it is empty or zero length
       * @param element the element to extract the value from
       * @return the value of the node (a String or Element)
       */
      public static Object getContent(Element element) {
          NodeList nl = element.getChildNodes();
          if (nl.getLength() == 0) {
              return null;
          }
  
          StringBuffer content = new StringBuffer();
          for (int i = 0; i < nl.getLength(); i++) {
              Node node = nl.item(i);
              switch (node.getNodeType()) {
              case Node.ELEMENT_NODE:
                  return node;
              case Node.CDATA_SECTION_NODE:
              case Node.TEXT_NODE:
                  content.append(node.getNodeValue());
                  break;
              }
          }
          String s = content.toString().trim();
          return (s.length() > 0) ? s : null;
      }
  }