Java XML JAXB Unmarshaller marshallUnmarshall(T inObj)

Description

Marshalls inObj and unmarshalls the result, returning the unmarshalled version

License

LGPL

Parameter

Parameter	Description
inObj	a parameter

Exception

Parameter	Description
Exception	an exception

Declaration

public static <T> T marshallUnmarshall(T inObj) throws Exception 

Method Source Code

//package com.java2s;
/*//from ww w. jav  a2  s  . c o  m
 * Copyright (c) 2007-2012 The Broad Institute, Inc.
 * SOFTWARE COPYRIGHT NOTICE
 * This software and its documentation are the copyright of the Broad Institute, Inc. All rights are reserved.
 *
 * This software is supplied without any warranty or guaranteed support whatsoever. The Broad Institute is not responsible for its use, misuse, or functionality.
 *
 * This software is licensed under the terms of the GNU Lesser General Public License (LGPL),
 * Version 2.1 which is available at http://www.opensource.org/licenses/lgpl-2.1.php.
 */

import org.w3c.dom.Document;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBElement;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;
import javax.xml.namespace.QName;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

public class Main {
    /**
     * Marshalls {@code inObj} and unmarshalls the result, returning the
     * unmarshalled version
     *
     * @param inObj
     * @return
     * @throws Exception
     */
    public static <T> T marshallUnmarshall(T inObj) throws Exception {

        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        DocumentBuilder builder = factory.newDocumentBuilder();
        Document doc = builder.newDocument();

        JAXBContext jc = JAXBContext.newInstance(inObj.getClass());
        Marshaller m = jc.createMarshaller();
        m.setProperty(Marshaller.JAXB_FRAGMENT, true);

        //This JAXBElement business is necessary because we don't know if we have @XmlRootElement on inObj
        JAXBElement inel = new JAXBElement(new QName("", "obj"), inObj.getClass(), inObj);
        //m.marshal(inel, System.out);
        m.marshal(inel, doc);

        Unmarshaller u = jc.createUnmarshaller();
        JAXBElement el = (JAXBElement) u.unmarshal(doc, inObj.getClass());
        return (T) el.getValue();
    }
}

Related

1. createUnmarshaller(Object object)
2. getUnmarshaller()
3. getUnmarshaller()
4. getUnmarshaller()
5. getUnmarshaller(Class jaxbClass)
6. unmarshal(Class beanClass, InputStream is)
7. unmarshal(Class c, Object o)
8. unmarshal(Class clazz, Source source)
9. unmarshal(Class clazz, String xml)