Jersey REST / JAXB error displaying interface

Question

I need to use the interface in my REST web service. Here is the Specs.java interface:

@XmlJavaTypeAdapter(MyAdapter.class)
public interface Specs {

    public BaseProperties getBaseProps();
    public void setBaseProps(BaseProperties baseProps);

}

MyAdapter.java:

public class MyAdapter extends XmlAdapter<Object,Object> 
{  
    public Object unmarshal(Object v) 
    { 
        return v; 
    }  
    public Object marshal(Object v) 
    { 
        return v; 
    }
}

RegSpecs.java

@XmlType
public class RegSpecs implements Specs{
private BaseProperties baseProps;

    public BaseProperties getBaseProps()
    {
        return baseProps;
    }
    public void setBaseProps(BaseProperties baseProps)
    {
        this.baseProps = baseProps;
    }

}

MapSpecs.java

@XmlType
public class MagSpecs implements Specs {

private BaseProperties baseProps;
private Features features;

    public BaseProperties getBaseProps()
    {
        return baseProps;
    }
    public void setBaseProps(BaseProperties baseProps)
    {
        this.baseProps = baseProps;
    }
    public Features getFeatures() {
        return features;
    }
    public void setFeatures(Features features) {
        this.features = features;
    }

}

Access to this service causes the following error:

javax.xml.bind.MarshalException - with a related exception: [javax.xml.bind.JAXBException: objects of the class .MagSpecs or any of its superclasses are known in this context.]

How to change my context? I am using JAXB bundled with Jersey 1.5

Thank!

EDIT: in an attempt to update my context, I added this code to my client (resource) class:

public class BookService  implements ContextResolver<JAXBContext> 
{

        private JAXBContext jaxbContext;

        public BookService() {
            try {
                // Bootstrap your JAXBContext will all necessary classes
                jaxbContext = JAXBContext.newInstance(Specs.class,MagSpecs.class, RegSpecs.class);
            } catch(Exception e) {
                throw new RuntimeException(e);
            }
        }

        public JAXBContext getContext(Class<?> clazz) {
            if(BookService.class == clazz) {
                return jaxbContext;
            }
            return null;
        }

In this case, I get the error:

entity.Specs - , JAXB .      :          . entity.Specs default-no-arg.      :          .

Answer 1

Specs , MagSpecs , , . - @XmlSeeAlso Specs:

@XmlSeeAlso({ MagSpecs.class, RegSpecs.class })
@XmlJavaTypeAdapter(MyAdapter.class) // Never needed this annotation myself...
public interface Specs {
    public BaseProperties getBaseProps();
    public void setBaseProps(BaseProperties baseProps);
}

, , JAXB, , , , XML- , , () . ( , ):

private SchemaOutputResolver sink;
StringWriter schema;

@Before
public void init() {
    schema = new StringWriter();
    sink = new SchemaOutputResolver() {
        @Override
        public Result createOutput(String namespaceUri,
                String suggestedFileName) throws IOException {
            StreamResult sr = new StreamResult(schema);
            sr.setSystemId("/dev/null");
            return sr;
        }
    };
    Assert.assertTrue(schema.toString().isEmpty());
}

private void testJAXB(Class<?>... classes) throws Exception {
    JAXBContext.newInstance(classes).generateSchema(sink);
    Assert.assertTrue(schema.toString().length() > 0);
}

@Test
public void testJAXBForSpecs() throws Exception {
    testJAXB(Specs.class);
}

---

[EDIT]: Specs . , . , .

Answer 2

EclipseLink JAXB (MOXy) XML ( , ). , factory create, impl:

• http://bdoughan.blogspot.com/2010/07/moxy-jaxb-map-interfaces-to-xml.html

MOXy REST:

• http://bdoughan.blogspot.com/2010/08/creating-restful-web-service-part-35.html