import javax.persistence.*
import org.hibernate.annotations.*

@Entity
@Table(name="user_hibernate")
class UserHibernate
{
	@Id
	@GeneratedValue(strategy = javax.persistence.GenerationType.IDENTITY)
	Long id

	@Version
	@Column(nullable = false)
	Long version

	String name

	@ManyToOne(optional = false)
	@JoinColumn(name = "house_id", insertable = false, updatable = false, nullable = false)
	HouseHibernate house

	// Variant 1 (bidirectionality is on the association)

	/*@OneToOne()
	@JoinColumn(name = "home_computer_id")
	ComputerHibernate homeComputer

	@OneToMany(cascade = CascadeType.ALL, targetEntity = ComputerHibernate.class)
    @JoinColumn(name = "owner_id", nullable = false)
	Set computers*/

	// Variant 2 (bidirectionality is on the list, see Computer class)

	@OneToOne()
	@JoinColumn(name = "home_computer_id")
	ComputerHibernate homeComputer

	@OneToMany(cascade = CascadeType.ALL, targetEntity = ComputerHibernate.class)
	@JoinColumn(name = "owner_id", nullable = false)
	Set computers

	// Variant 3 (cascade is on the association, this will *fail*)

	/*@OneToOne(cascade = CascadeType.ALL)
	@JoinColumn(name = "home_computer_id")
	ComputerHibernate homeComputer

	@OneToMany(cascade = CascadeType.ALL, targetEntity = ComputerHibernate.class)
	@JoinColumn(name = "owner_id", nullable = false)
	Set computers*/
}