001 /**
002 *
003 * Copyright 2005 The Apache Software Foundation
004 *
005 * Licensed under the Apache License, Version 2.0 (the "License");
006 * you may not use this file except in compliance with the License.
007 * 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: 410741 $ $Date: 2006-05-31 21:35:48 -0700 (Wed, 31 May 2006) $
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);
055 }
056 }
057 }