Wolfgang Laun-2 wrote:
>
> Sorry, typo!
> "...a *file* jaxb.index..."
> (not "fiel(d)")
>
> This file simply lists the simple class names in that package, see the
> javadoc for JAXBContext.newInstance( String path).
>
> .W
>
thanks a lot again- happy weekend :-) !
On Fri, Mar 6, 2009 at 3:27 PM, joshua1970 <joshua1970j_at_libero.it> wrote:
>
>
>
> Wolfgang Laun-2 wrote:
> >
> > Assuming classes in packages each containing a fiel jaxb.index
> > (see JAXBContext.newInstance), you might marshal arbitrary
> > classes as shown below. Works with any class or superclass,
> > so java.lang.Object is OK, too.
> >
> > import javax.xml.namespace.QName;
> > import packa.*;
> > import packb.*;
> >
> > public class Main {
> > Main(){
> > }
> >
> > <T> JAXBElement<T> wrap( String ns, String tag, T o ){
> > QName qtag = new QName( ns, tag );
> > Class<?> clazz = o.getClass();
> > @SuppressWarnings( "unchecked" )
> > JAXBElement<T> jbe = new JAXBElement( qtag, clazz, o );
> > return jbe;
> > }
> >
> > void marshal() throws Exception {
> >
> > ClassA a = new ClassA();
> > a.setFa1( 42 );
> > ClassB b = new ClassB();
> > b.setFb1( "baked bean" );
> >
> > JAXBContext jc = JAXBContext.newInstance( "packa:packb" );
> > Marshaller m = jc.createMarshaller();
> > m.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
> >
> > JAXBElement<ClassA> jba = wrap( "http://packa", "BeanA", a );
> > m.marshal( jba, System.out );
> > m.setProperty( Marshaller.JAXB_FRAGMENT, true );
> >
> > JAXBElement<?> jbb = wrap( "http://packb", "BeanB", (Object)b
> );
> > m.marshal( jbb, System.out );
> > }
> >
> >
> > public static void main( String[] args ) throws Exception {
> > Main main = new Main();
> > main.marshal();
> > }
> > }
> >
> > Output:
> > <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
> > <ns2:BeanA xmlns:ns2="http://packa">
> > <fa1>42</fa1>
> > </ns2:BeanA>
> >
> > <ns2:BeanB xmlns:ns2="http://packb">
> > <fb1>baked bean</fb1>
> > </ns2:BeanB>
> >
> > -W
> >
>
>
> Hello!
> thank you very much for your reply: excuse me can you clarify just this:
> >Assuming classes in packages each containing a fiel jaxb.index
> Do you mean I need to add a field/annotation to the superclass so that it
> can marshall fields of the subclass ?
> sorry, I didn't understand that.... :-<
>
> thanks for your patience
>
>
> On Fri, Mar 6, 2009 at 12:27 PM, joshua1970 <joshua1970j_at_libero.it> wrote:
>
> >
> > Hi all !
> > I'm pretty new to JAXB, however I'm using just the basic features to
> > marshal
> > my Entity Beans
> > into XML. This method works fine to marshal my EntityBean called
> > "MyEntity"
> > into XML.
> >
> > StringWriter strWriter = new StringWriter();
> > JAXBContext context = null;
> > Marshaller marshaller = null;
> > try {
> > context =
> > JAXBContext.newInstance(BaseComponent.class);
> > marshaller = context.createMarshaller();
> > marshaller.setProperty( Marshaller.JAXB_FRAGMENT,
> > Boolean.TRUE );
> > } catch (JAXBException e1) {
> > // TODO Auto-generated catch block
> > e1.printStackTrace();
> > }
> > Iterator <MyEntity> iter = list.iterator();
> > while (iter.hasNext()) {
> > try {
> > MyEntity ejb = iter.next();
> > marshaller.marshal(ejb , strWriter);
> >
> > } catch (JAXBException e) {
> > // TODO Auto-generated catch block
> > e.printStackTrace();
> > }
> > }
> >
> > My question is : how can I adapt this to all my Entity Beans ? I have
> > tried
> > first adding a top interface to all my Entity Beans and replacing all
> > MyEntity with MyEntityItf in the code
> >
> > ex
> > Iterator <MyEntity> iter = list.iterator();
> > with
> > Iterator <MyEntityItf> iter = list.iterator();
> >
> > However I get a runtime error which warns me that I cannot use
> interfaces
> > with JAXB.
> > Ok, I have tried extending an empty Class as placeorder but I get an
> empty
> > XML and the error message:
> >
> > [com.sun.istack.SAXException2: unable to marshal type
> > "ejb.entity.MyEntity"
> > as an element because it is missing an @XmlRootElement annotation]
> >
> > Can anybody give me a clue how to solve this problem ?
> > thanks a lot
> > john
> >
> >
> > --
> > View this message in context:
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> > Sent from the java.net - jaxb users mailing list archive at Nabble.com.
> >
> >
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> >
> >
>
> :-(
> --
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