org.linguafranca.pwdb.kdbx.jaxb.util.JaxbUtil Maven / Gradle / Ivy

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Contains a JAXB implementation for KDBX.

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package org.linguafranca.pwdb.kdbx.jaxb.util;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBElement;
import javax.xml.bind.JAXBException;
import javax.xml.bind.util.JAXBSource;
import javax.xml.namespace.QName;

public class JaxbUtil {

    // https://stackoverflow.com/questions/879453/how-to-make-a-deep-copy-of-jaxb-object-like-xmlbean-xmlobject-copy
    // however it does not copy transients which we need it to, so we don't use it
    public static  T deepCopyJAXB(T object, Class clazz) {
        try {
            JAXBContext jaxbContext = JAXBContext.newInstance(clazz);
            JAXBElement contentObject = new JAXBElement(new QName(clazz.getSimpleName()), clazz, object);
            JAXBSource source = new JAXBSource(jaxbContext, contentObject);
            return jaxbContext.createUnmarshaller().unmarshal(source, clazz).getValue();
        } catch (JAXBException e) {
            throw new RuntimeException(e);
        }
    }

    public static  T deepCopyJAXB(T object) {
        if(object==null) throw new RuntimeException("Can't guess at class");
        return deepCopyJAXB(object, (Class) object.getClass());
    }
}