Serialize a JAXB object via its ID?

Question

In my data model, I have something to this effect:

@Entity
public class Target {

    @Id 
    @GeneratedValue
    private Long id;

    /* ...etc... */
}

@         


        

Answer 1

It works for EclipseLink MOXy with XmlID and XmlIDRef (but fails for sun JAXB, where XmlID must be string)

@Entity
@XmlRootElement
public class Target {
    @Id
    @GeneratedValue
    @XmlID
    @XmlElement
    private Long id;
}


@Entity
@XmlRootElement
public class Dependency {

    @Id
    @GeneratedValue
    @XmlElement
    private  Long id;

    @ManyToOne(optional = false)
    @Column(name = "target_id")
    @XmlIDREF
    @XmlElement(name = "targetId")
    private Target target;
}