Description Sabine Heider 2010-11-21 13:46:17 EST

Nested embeddables can't be used as embedded ids. When trying to do so, a validation exception [EclipseLink-7298] is thrown. 

I tried the following mapping, which at least to my understanding of JPA 2 should be valid:

@Entity
public class Project {
    @EmbeddedId private ProjectId id;
    private String description;
    //...
}

@Embeddable
public class ProjectId {
    @Embedded private DeptId dept;
    private String name;
    //...
}

@Embeddable
public class DeptId {
    private int number;
    private String country;
    //...
}