Hibernate: Annotation one-to-one (join table)

Unidirectonal one-to-one (join table) association

Hibernate Doc (Chap 8.3.3)

::Relationship::
person(one) -> address(one)

::DB Schema::
person(personId)
address(addressId)
personaddress(personId, addressId)

::Java Operation::
person.getAddress();

::Annotation::

@Entity
@Table(name = "PERSON")
@Entity
@Table(name = "PERSON")
public class Person {

  @Id
  @GeneratedValue(strategy = GenerationType.AUTO)
  @Column(name = "personId")
  private int id;

  @OneToOne(optional=true)
  @JoinTable(name="PersonAddress",
    joinColumns = {
      @JoinColumn(name="personId", unique = true)           
    },
    inverseJoinColumns = {
      @JoinColumn(name="addressId")
    }     
  )
  private Address address;
}

@Entity
@Table(name = "ADDRESS")
public class Address {
  @Id
  @GeneratedValue(strategy = GenerationType.AUTO)
  @Column(name = "addressId")
  private int id;  
}

::Generated SQL::
- person.getAddress();

select person0_.personId as personId2_1_, person0_1_.addressId as addressId3_1_, address1_.addressId as addressId4_0_ from PERSON person0_ left outer join PersonAddress person0_1_ on person0_.personId=person0_1_.personId left outer join ADDRESS address1_ on person0_1_.addressId=address1_.addressId where person0_.personId=?

[Association Mapping List]