How to bind element of namespace with EclipseLink MOXy? - jaxb

Question

I have the following java model:
public class Container {
public X x;
public Y y;
}
public class X {
public String test;
}
public class Y {}
and want to map the following document:
<?xml version="1.0" encoding="UTF-8"?>
<my:root xmlns:my="http://my.url" test="value">
<x/>
</my:root>
For this, I use a bindings file:
<?xml version="1.0"?>
<xml-bindings
xmlns="http://www.eclipse.org/eclipselink/xsds/persistence/oxm"
package-name="example">
<xml-schema namespace="http://my.url" />
<java-types>
<java-type name="Container">
<xml-root-element name="root"/>
<xml-type namespace="http://my.url" />
<java-attributes>
<xml-element java-attribute="x" xml-path="x" type="example.X"/>
<xml-element java-attribute="y" xml-path="." type="example.Y"/>
</java-attributes>
</java-type>
<java-type name="Y">
<java-attributes>
<xml-element java-attribute="test" xml-path="#test"/>
</java-attributes>
</java-type>
</java-types>
</xml-bindings>
It fails with an Exception:
[Exception [EclipseLink-25008] (Eclipse Persistence Services - 2.5.1.v20130918-f2b9fc5): org.eclipse.persistence.exceptions.XMLMarshalException
Exception Description: A descriptor with default root element {http://my.url}root was not found in the project]
at org.eclipse.persistence.jaxb.JAXBBinder.unmarshal(JAXBBinder.java:100)
at example.Main.main(Main.java:39)
The model for the given document is not necessarily very intuitive but neither do I have an influence on the model or the document.
How can I make it work? Everything worked fine until the namespace "http://my.url" was introduced.

Answer 1

Using the information you provided in your question, the following demo code works for me:
Demo Code
Demo
import java.io.File;
import java.util.*;
import javax.xml.bind.*;
import org.eclipse.persistence.jaxb.JAXBContextProperties;;
public class Demo {
public static void main(String[] args) throws Exception {
Map<String, Object> properties = new HashMap<String, Object>(1);
properties.put(JAXBContextProperties.OXM_METADATA_SOURCE, "example/oxm.xml");
JAXBContext jc = JAXBContext.newInstance(new Class[] {Container.class}, properties);
Unmarshaller unmarshaller = jc.createUnmarshaller();
File xml = new File("src/example/input.xml");
Object result = unmarshaller.unmarshal(xml);
Marshaller marshaller = jc.createMarshaller();
marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
marshaller.marshal(result, System.out);
}
}
Output
<?xml version="1.0" encoding="UTF-8"?>
<ns0:root xmlns:ns0="http://my.url">
<x/>
</ns0:root>