@Entity
@Indexed
public class A {
	@Id
	@GeneratedValue
	private long id;

	@OneToOne
	@IndexedEmbedded
	private B b;
}

@Entity
public class B {
	@Id
	@GeneratedValue
	private Timestamp id;

	@Field
	private String foo;

	public Timestamp getId() {
		return id;
	}

	public String getFoo() {
		return foo;
	}
}