@Entity(name = "analysis")
public class Analysis {
    ...

    @Embedded
    @AttributeOverride(name = "id", column = @Column(name = "cube_id"))
    private DomainReference cube;

    // Blending Info
    @ElementCollection
    @AttributeOverride(name = "id", column = @Column(name = "cube_id"))
    private Set<DomainReference> blendedCubes = new HashSet<>();

@Embeddable
public class DomainReference {
    @Column(columnDefinition = "VARCHAR(36)")
    private String id;

entityManager.createQuery("select analys from analysis analys inner join analys.blendedCubes blendedcub1_ where blendedcub1_.id='001'")