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    package org.apache.camel.converter.jaxp;
018    
019    import org.w3c.dom.Attr;
020    import org.w3c.dom.Element;
021    import org.w3c.dom.Node;
022    import org.w3c.dom.NodeList;
023    import org.w3c.dom.Text;
024    import org.apache.camel.Converter;
025    
026    /**
027     * Converts from some DOM types to Java types
028     *
029     * @version $Revision: 830197 $
030     */
031    @Converter
032    public final class DomConverter {
033    
034        private DomConverter() {
035            // Utility Class
036        }
037    
038        @Converter
039        public static String toString(NodeList nodeList) {
040            StringBuffer buffer = new StringBuffer();
041            append(buffer, nodeList);
042            return buffer.toString();
043        }
044    
045        @Converter
046        public static Integer toInteger(NodeList nodeList) {
047            StringBuffer buffer = new StringBuffer();
048            append(buffer, nodeList);
049            String s = buffer.toString();
050            return Integer.valueOf(s);
051        }
052    
053        @Converter
054        public static Long toLong(NodeList nodeList) {
055            StringBuffer buffer = new StringBuffer();
056            append(buffer, nodeList);
057            String s = buffer.toString();
058            return Long.valueOf(s);
059        }
060    
061        private static void append(StringBuffer buffer, NodeList nodeList) {
062            int size = nodeList.getLength();
063            for (int i = 0; i < size; i++) {
064                append(buffer, nodeList.item(i));
065            }
066        }
067    
068        private static void append(StringBuffer buffer, Node node) {
069            if (node instanceof Text) {
070                Text text = (Text) node;
071                buffer.append(text.getTextContent());
072            } else if (node instanceof Attr) {
073                Attr attribute = (Attr) node;
074                buffer.append(attribute.getTextContent());
075            } else if (node instanceof Element) {
076                Element element = (Element) node;
077                append(buffer, element.getChildNodes());
078            }
079        }
080    }