You have a few options at this point.
First, be sure you've compiled the generated *Descriptor.java files
and they're in the cp.
1)
_cdr = new ClassDescriptorResolverImpl();
_cdr.resolve(/* one option for top level class */);
_cdr.resolve(/* a different option for top level class */);
_cdr.resolve(/* yet a third option for top level class */);
_myUnmarshaller = new Unmarshaller((Class)null);
_myUnmarshaller.setResolver(_cdr);
//Now you can safely unmarshall.
2) In the instance document, add an xsi:type attribute
on the node that you'll pass to the unmarshaller.
You don't need to specify it for the child nodes, b/c
this info is code generated into the *Descriptor.java files.
Here is an example:
<?xml version="1.0" encoding="UTF-8"?>
<Wrapper>
<Aclass xsi:type="java:pollux.AxClass"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";>
<sString>string23</sString>
<xInt>23</xInt>
</Aclass>
</Wrapper>
3) Instead of using xsi:type, you can specify a namespace.
This option is nice because you can easily change
your package structure without breaking the client.
See this post for an example:
http://www.mail-archive.com/[email protected]/msg09658.html
Hope this help,
--Erik
> -----Original Message-----
> From: Dean Hiller [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, December 05, 2002 7:42 AM
> To: [EMAIL PROTECTED]
> Subject: Re: [castor-dev] unmarshalling unkown xml with
> generated code
>
>
> That didnt' seem to work, throws an exception saying
> "The class for the
> root element 'ButtonPress' could not be found from the
> UnmarshalHandler.
> I am looking at the UnmarshalHandler and the classDesc
> returned from
> _cdResolver.resolveByXMLName(name, namespace, null); is
> null. Because
> of this, the exception is thrown. _cdResolver is a
> ClassDescriptorResolverImpl, so I am now looking at
> that. It loads from
> the mapping first(which I don't have as I read this is
> for non-generated
> source code). It then goes through the cached
> elements. The cache size
> is 0. There are no elements in the cache. Am I
> missing something?
> thanks very much for your help,
> Dean
>
> [EMAIL PROTECTED] wrote:
>
> >Use this:
> >
> > _myUnmarshaller = new Unmarshaller((Class)null);
> >
> >
> > > -----Original Message-----
> > > From: Dean Hiller [mailto:[EMAIL PROTECTED]]
> > > Sent: Wednesday, December 04, 2002 3:56 PM
> > > To: [EMAIL PROTECTED]
> > > Subject: [castor-dev] unmarshalling unkown xml with
> > > generated code
> > >
> > >
> > > I am sorry, the mail archives seem to be down, so I
> > > could not search
> > > them yet.
> > >
> > > I see Mapping is supposed to be used for non-generated
> > > code from what I
> > > read so far. How do I unmarshal objects where I don't
> > > know what the xml
> > > is ahead of time. I can't seem to just do this
> > >
> > > UnMarshaller u = new UnMarshaller();
> > > Object o = u.unmarshal(myStream);
> > > if(o instanceof Device).......
> > > else if(o instanceof System).....
> > >
> > > I am sure castor can handle this. I am just not sure
> > > how to do it.
> > > thanks for any help in this,
> > > Dean
> > >
> > >
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