[Resteasy-developers] RESTEasy Client Framework: unexpected element (uri:"", local:"collection"). Expected elements are (none)

[Abhijit S. <for...@gm...>]

I am getting the following error in a custom MessageBodyReader. Client
code, MessageBodyReader.readFrom() and the server response are give
below.
Any ideas? Is this a Client Framework bug? I am using RESTEasy 2.2.1.GA.

javax.xml.bind.UnmarshalException: unexpected element (uri:"",
local:"collection"). Expected elements are (none)
	at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallingContext.handleEvent(UnmarshallingContext.java:631)
	at com.sun.xml.internal.bind.v2.runtime.unmarshaller.Loader.reportError(Loader.java:236)
	at com.sun.xml.internal.bind.v2.runtime.unmarshaller.Loader.reportError(Loader.java:231)
	at com.sun.xml.internal.bind.v2.runtime.unmarshaller.Loader.reportUnexpectedChildElement(Loader.java:105)
	at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallingContext$DefaultRootLoader.childElement(UnmarshallingContext.java:1038)
	at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallingContext._startElement(UnmarshallingContext.java:467)
	at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallingContext.startElement(UnmarshallingContext.java:448)
	at com.sun.xml.internal.bind.v2.runtime.unmarshaller.SAXConnector.startElement(SAXConnector.java:137)
	at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:501)
	at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:400)
	at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl$NSContentDriver.scanRootElementHook(XMLNSDocumentScannerImpl.java:626)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:3103)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(XMLDocumentScannerImpl.java:922)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:648)
	at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:140)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:511)
	at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:808)
	at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)
	at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:119)
	at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1205)
	at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:522)
	at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(UnmarshallerImpl.java:200)
	at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal(UnmarshallerImpl.java:173)
	at javax.xml.bind.helpers.AbstractUnmarshallerImpl.unmarshal(AbstractUnmarshallerImpl.java:137)
	at javax.xml.bind.helpers.AbstractUnmarshallerImpl.unmarshal(AbstractUnmarshallerImpl.java:184)
	at name.app.abhi.movieservice.jaxrs.client.contenthandling.MovieSetMessageBodyReader.readFrom(MovieSetMessageBodyReader.java:66)

====================================================================================
Client:

@GET
    @Consumes("text/xml")
    public SortedSet<Movie> sendRequest() {
	ResteasyProviderFactory instance = ResteasyProviderFactory
		.getInstance();
	RegisterBuiltin.register(instance);
	instance.registerProvider(MovieSetMessageBodyReader.class);

	Map<String, Object> requestAttributes = new HashMap<String, Object>();
	requestAttributes.put("path", path);

	MovieServiceJaxRs proxy = ProxyFactory.create(MovieServiceJaxRs.class,
		ENDPOINT, requestAttributes);
	ClientResponse<TreeSet<Movie>> response =
(ClientResponse<TreeSet<Movie>>) proxy
		.getMovieSet(path);
	return response.getEntity(TreeSet.class, new MovieParameterizedType());

    }

=======================================================================================
MessageBodyReader.readFrom():

@Override
    public TreeSet<Movie> readFrom(Class<TreeSet<Movie>> type,
	    Type genericType, Annotation[] annotations, MediaType mediaType,
	    MultivaluedMap<String, String> httpHeaders, InputStream entityStream)
	    throws IOException, WebApplicationException {

	try {
	    JAXBContext ctx = JAXBContext.newInstance(type);
	    return (TreeSet<Movie>) ctx.createUnmarshaller().unmarshal(
		    entityStream);
	} catch (JAXBException e) {
	    e.printStackTrace();
	}

	return null;
    }

=======================================================================================
Server response:

?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<collection>
	<movie>		
		<genre>Unknown</genre>
		<name>4.3.2.1</name>
		<year>2010</year>
	</movie>
	<movie>		
		<genre>Unknown</genre>
		<name>Battlestar Galactica The Plan</name>
		<year>2009</year>
	</movie>
</collection>