/*
* Copyright 2001-2008 The Apache Software Foundation.
*
* Licensed 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.juddi.jaxb;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.HashMap;
import java.util.Map;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBElement;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;
import org.apache.log4j.Logger;
import org.w3c.dom.Element;
/**
* @author <a href="mailto:jfaath@apache.org">Jeff Faath</a>
*/
public class JAXBMarshaller {
private static Logger logger = Logger.getLogger(JAXBMarshaller.class);
public static final String PACKAGE_UDDIAPI = "org.uddi.api_v3";
public static final String PACKAGE_SUBSCRIPTION = "org.uddi.sub_v3";
private static final Map<String, JAXBContext> JAXBContexts = new HashMap<String, JAXBContext>();
static {
try {
JAXBContexts.put(PACKAGE_UDDIAPI, JAXBContext.newInstance(PACKAGE_UDDIAPI));
JAXBContexts.put(PACKAGE_SUBSCRIPTION, JAXBContext.newInstance(PACKAGE_SUBSCRIPTION));
} catch (JAXBException e) {
logger.error("Initialization of JAXBMarshaller failed:" + e, e);
throw new ExceptionInInitializerError(e);
}
}
@SuppressWarnings("unchecked")
public static Object unmarshallFromInputStream(InputStream inputStream, String thePackage) throws JAXBException {
Object obj = null;
if (inputStream != null) {
JAXBContext jc = JAXBContexts.get(thePackage);
Unmarshaller unmarshaller = jc.createUnmarshaller();
obj = ((JAXBElement)unmarshaller.unmarshal(inputStream)).getValue();
}
else
logger.error("A null input stream was provided");
return obj;
}
public static Object unmarshallFromFileResource(String fileName, String thePackage) throws JAXBException, IOException {
Object obj = null;
URL url = Thread.currentThread().getContextClassLoader().getResource(fileName);
if (url==null) {
logger.error("Could not find resource: " + fileName);
} else {
InputStream resourceStream =url.openStream();
obj = unmarshallFromInputStream(resourceStream, thePackage);
}
return obj;
}
public static Object unmarshallFromString(String rawObject, String thePackage) throws JAXBException {
Object obj = null;
if (rawObject != null && rawObject.length() > 0) {
ByteArrayInputStream bais = new ByteArrayInputStream(rawObject.getBytes());
obj = unmarshallFromInputStream(bais, thePackage);
}
else
logger.error("The raw object provided is null or empty");
return obj;
}
public static String marshallToString(Object object, String thePackage) throws JAXBException {
String rawObject = null;
JAXBContext jc = JAXBContexts.get(thePackage);
Marshaller marshaller = jc.createMarshaller();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
marshaller.marshal(object, baos);
rawObject = baos.toString();
return rawObject;
}
public static Element marshallToElement(Object object, String thePackage, Element element) throws JAXBException {
JAXBContext jc = JAXBContexts.get(thePackage);
Marshaller marshaller = jc.createMarshaller();
marshaller.marshal(object, element);
return element;
}
@SuppressWarnings("unchecked")
public static Object unmarshallFromElement(Element element, String thePackage) throws JAXBException {
JAXBContext jc = JAXBContexts.get(thePackage);
Unmarshaller unmarshaller = jc.createUnmarshaller();
Object obj = ((JAXBElement) unmarshaller.unmarshal(element)).getValue();
return obj;
}
}