i'm doing OneToOne association with shared primary key

Employee<--->Address (bidirectional)

I'm using Ms SQLServer 2005

Employee : EMP_ID(pK)
Address : ADDRESS_ID(pFK references EMP_ID of Employee)

I'm using hibernate with annotations.

Employee class :

@Entity
@Table(name = "EMPLOYEE")
public class Employee
{
@GenericGenerator(name = "assigned",strategy = "assigned")
@Id @GeneratedValue(generator = "assigned")
@Column(name = "EMP_ID")
private Integer empiId;
@Column(name = "NAME")
private String name;
@Column(name = "SALARY")
private Double salary;
@OneToOne
@PrimaryKeyJoinColumn
private Address address;
//.....setters n getter
}

Address class :

@Entity
@Table(name = "ADDRESS")
public class Address
{
@Id @GeneratedValue(generator = "myForeignGenerator")
@GenericGenerator(
name = "myForeignGenerator",
strategy = "foreign",
parameters = @Parameter(name = "property",value = "employee")
)
@Column(name = "ADDRESS_ID")
private Integer addressId;
@Column(name = "STREET")
private String street;
@Column(name = "CITY")
private String city;
@Column(name = "ZIPCODE")
private String zipcode;
@OneToOne(mappedBy = "address") // Is this stmt necessary??? (in the book 'Java Persistence with Hibernate', this line is not specified, if i dont write this line, i get an err.. -> "Could not determine type for: Package1.Employee, at table: ADDRESS, for columns: [org.hibernate.mapping.Column(employee)]", this is not my prime doubt)
private Employee employee;
//.......setters n getters
}

Main :

public static void main(String args[])
{
Employee employee = new Employee();
employee.setEmpiId(44);
employee.setName("AAA");
employee.setSalary(23000.0);

Address address = new Address();
address.setStreet("XZXZ");
address.setCity("Pune");
address.setZipcode("41004");

employee.setAddress(address);
address.setEmployee(employee);

Session session = HibernateUtil.getSessionFactory().openSession();
Transaction tx = session.beginTransaction();

session.save(employee);
//session.save(address);

tx.commit();
session.close();
HibernateUtil.ShutDown();
}


I'm saving only the employee object.
But the changes get saved in db only in employee table.
It should also save the address object in the databse, right?
Or do i need to save the address object explicitly using session.save(address) after session.save(employee)?

Please help me.

Thanx in advance.

You need to set the cascade parameter on the @OneToOne annotation.
Like:
.

Yes, the statement is necessary.

I know this was a little while ago now, but I hope you figured out that you want to put the cascade=CascadeType.ALL on the @OneToOne in the Employee class, if that's the object you want to save (you don't need it in the address class).