/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.camel.converter.jaxb;
import java.util.HashMap;
import java.util.Map;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.util.JAXBSource;
import javax.xml.parsers.ParserConfigurationException;
import org.w3c.dom.Document;
import org.apache.camel.Converter;
import org.apache.camel.Exchange;
import org.apache.camel.Message;
import org.apache.camel.converter.HasAnnotation;
import org.apache.camel.converter.jaxp.XmlConverter;
/**
* @version $Revision: 750806 $
*/
public final class JaxbConverter {
private XmlConverter xmlConverter = new XmlConverter();
private Map<Class, JAXBContext> contexts = new HashMap<Class, JAXBContext>();
@Converter
public JAXBSource toSource(@HasAnnotation(XmlRootElement.class)Object value) throws JAXBException {
if (value == null) {
throw new IllegalArgumentException("Cannot convert from null value to JAXBSource");
}
JAXBContext context = getJaxbContext(value);
return new JAXBSource(context, value);
}
@Converter
public Document toDocument(@HasAnnotation(XmlRootElement.class)Object value) throws JAXBException, ParserConfigurationException {
if (value == null) {
throw new IllegalArgumentException("Cannot convert from null value to JAXBSource");
}
JAXBContext context = getJaxbContext(value);
// must create a new instance of marshaller as its not thred safe
Marshaller marshaller = context.createMarshaller();
Document doc = xmlConverter.createDocument();
marshaller.marshal(value, doc);
return doc;
}
@Converter
public static MessageDefinition toMessageType(Exchange exchange) {
return toMessageType(exchange.getIn());
}
@Converter
public static MessageDefinition toMessageType(Message in) {
MessageDefinition answer = new MessageDefinition();
answer.copyFrom(in);
return answer;
}
private synchronized JAXBContext getJaxbContext(Object value) throws JAXBException {
Class type = value.getClass();
JAXBContext context = contexts.get(type);
if (context == null) {
context = JAXBContext.newInstance(type);
contexts.put(type, context);
}
return context;
}
}