dynamic jaxb marshalling

dynamiJaxbMarshalling.java

    public static <T> void marshal (Writer writer, Class<T> aclass, T tobj) {
        try {
            Object toMarshall = tobj;
            JAXBContext context = JAXBContext.newInstance(tobj.getClass().getPackage().getName());
            // è un XmlRootElement
            if ( tobj.getClass().getAnnotation(XmlRootElement.class) == null ) {
                JAXBElement<T> ttobj = new JAXBElement(
                        new QName("", tobj.getClass().getSimpleName().toLowerCase()),
                        aclass,
                        tobj
                );
                toMarshall = ttobj;
            }
            Marshaller marshaller = context.createMarshaller();
            marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE);
            marshaller.marshal(toMarshall, writer);
        } catch (JAXBException e) {
            LOGGER.error("error", e);
        }
    }