001    /**
002     *  Licensed to the Apache Software Foundation (ASF) under one or more
003     *  contributor license agreements.  See the NOTICE file distributed with
004     *  this work for additional information regarding copyright ownership.
005     *  The ASF licenses this file to You under the Apache License, Version 2.0
006     *  (the "License"); you may not use this file except in compliance with
007     *  the License.  You may obtain a copy of the License at
008     *
009     *     http://www.apache.org/licenses/LICENSE-2.0
010     *
011     *  Unless required by applicable law or agreed to in writing, software
012     *  distributed under the License is distributed on an "AS IS" BASIS,
013     *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     *  See the License for the specific language governing permissions and
015     *  limitations under the License.
016     */
017    
018    package org.apache.geronimo.deployment.util;
019    
020    import org.w3c.dom.Element;
021    import org.w3c.dom.NodeList;
022    import org.w3c.dom.Node;
023    
024    /**
025     * 
026     * 
027     * @version $Rev: 706640 $ $Date: 2008-10-21 14:44:05 +0000 (Tue, 21 Oct 2008) $
028     */
029    public class XMLUtil {
030        public static Object getContent(Element element) {
031            NodeList nl = element.getChildNodes();
032            StringBuffer content = new StringBuffer();
033            for (int i = 0; i < nl.getLength(); i++) {
034                Node node = nl.item(i);
035                switch (node.getNodeType()) {
036                case Node.ELEMENT_NODE:
037                    return node;
038                case Node.CDATA_SECTION_NODE:
039                case Node.TEXT_NODE:
040                    content.append(node.getNodeValue());
041                    break;
042                }
043            }
044            return content.toString().trim();
045        }
046    
047        public static Element getChild(Element parent, String name) {
048            for (Node child = parent.getFirstChild(); child != null; child = child.getNextSibling()) {
049                if (child instanceof Element && name.equals(child.getNodeName())) {
050                    return (Element) child;
051                }
052            }
053            return null;
054        }
055    
056        public static String getChildContent(Element parent, String name, String missing, String empty) {
057            Element child = getChild(parent, name);
058            if (child == null) {
059                return missing;
060            } else {
061                String content = (String) getContent(child);
062                return (content != null) ? content : empty;
063            }
064        }
065    }