Description Paul Fullbright 2011-08-23 13:52:50 EDT

For the following object model:

@XmlRootElement(name="root")
public class Root {
		
	@XmlElementRef(type=Foo.class)
	public List foos;
}

@XmlSeeAlso({ FooA.class, FooB.class })
public abstract class Foo {
	
	@XmlValue
	public String value;
}

@XmlRootElement(name="foo-a")
public class FooA extends Foo {}

@XmlRootElement(name="foo-b")
public class FooB extends Foo {}


when attempting to marshal a document, I get the following exception:

javax.xml.bind.JAXBException: 
Exception Description: Invalid XmlElementRef on property foos on class jaxbtest.model.Root. Referenced Element not declared.
...

This is pretty much Example 1 (Ant Task example) (except the type is specified in the @XmlElementRef annotation, not the java field) in the @XmlElementRef javadocs, and is fully supported with Metro.