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.geronimo.kernel.config.xstream;
018
019 import java.lang.reflect.Method;
020
021 import com.thoughtworks.xstream.converters.ConversionException;
022 import com.thoughtworks.xstream.converters.Converter;
023 import com.thoughtworks.xstream.converters.MarshallingContext;
024 import com.thoughtworks.xstream.converters.UnmarshallingContext;
025 import com.thoughtworks.xstream.io.HierarchicalStreamReader;
026 import com.thoughtworks.xstream.io.HierarchicalStreamWriter;
027
028 /**
029 * @version $Rev: 549825 $ $Date: 2007-06-22 10:17:31 -0400 (Fri, 22 Jun 2007) $
030 */
031 public class QNameConverter implements Converter {
032 private static final String QNAME_CLASS = "javax.xml.namespace.QName";
033
034 public boolean canConvert(Class clazz) {
035 return QNAME_CLASS.equals(clazz.getName());
036 }
037
038 public void marshal(Object object, HierarchicalStreamWriter writer, MarshallingContext marshallingContext) {
039 writer.setValue(object.toString());
040 }
041
042 public Object unmarshal(HierarchicalStreamReader reader, UnmarshallingContext unmarshallingContext) {
043 Class qnameClass = unmarshallingContext.getRequiredType();
044 if (!canConvert(qnameClass)) {
045 throw new ConversionException("Unexpected type in unmarshal: " + qnameClass.getName());
046 }
047
048 String qnameString = reader.getValue();
049 try {
050 Method method = qnameClass.getMethod("valueOf", new Class[]{String.class});
051 Object qname = method.invoke(null, new Object[] { qnameString });
052 return qname;
053 } catch (Exception e) {
054 throw new ConversionException("Unable to convert value to a qname: " + qnameString, e);
055 }
056 }
057 }