@Entity
public class Address implements Serializable {
	private static final long serialVersionUID = 1L;

	@Id
	@GeneratedValue
	private Long id;

	@Version
	private Integer version;
...
}

@Entity
public class Partner implements Serializable {
	private static final long serialVersionUID = 1L;
...

	private @OneToOne(cascade=CascadeType.ALL)
	Address address4;
...
}

@Entity
public class Partner implements Serializable {
	private static final long serialVersionUID = 1L;
...

	private @OneToOne(cascade=CascadeType.ALL, cascade=CascadeType.ALL)
	Address address4;
...
}