objectdb - objectDb での 2 つのテーブルの結合

Question

objectDb の従業員と住所に 2 つのテーブルがあり、2 つのテーブルを結合して、emp_add のような 3 番目のテーブルを生成したいと考えています。

従業員.java

@Entity
public class Employee
{

    int empid;
    String empname;
    private Set<Address> address;

    public Employee(int empid, String empname, Set address)
    {
        this.empid = empid;
        this.empname = empname;
        this.address = address;
    }

    @Id
    public int getId()
    {
        return empid;
    }

    public void setId(int empid)
    {
        this.empid = empid;
    }

    public String getName()
    {
        return empname;
    }

    public void setName(String empname)
    {
        this.empname = empname;
    }

    @ManyToMany
    @JoinTable(name = "emp_add",
            joinColumns
            = @JoinColumn(name = "empid", referencedColumnName = "empid"),
            inverseJoinColumns
            = @JoinColumn(name = "addid", referencedColumnName = "addid")
    )
    public Set getAddress()
    {
        return address;
    }

    public void setAddress(Set address)
    {
        this.address = address;
    }

}

アドレス.java

@Entity
public class Address
{

    int addid;
    String city;
    String houseno;
    private Set<Employee> employee;
    public Address(int addid, String city, String houseno,Set employee)
    {
        this.addid = addid;
        this.city = city;
        this.houseno = houseno;
    }

    public int getAdd()
    {
        return addid;
    }

    public void setAdd(int addid)
    {
        this.addid = addid;
    }

    public String getCity()
    {
        return city;
    }

    public void setCity(String city)
    {
        this.city = city;
    }

    public String getHouse()
    {
        return houseno;
    }

    public void setHouse(String houseno)
    {
        this.houseno = houseno;
    }

    @ManyToMany(mappedBy = "employee")
    public Set getEmployee()
    {
        return employee;
    }

    public void setEmployee(Set employee)
    {
        this.employee = employee;
    }

}

EmployyAdd.java
---------------
public class EmployyAdd
{

    public static void main(String[] args)
    {
        EntityManagerFactory emfactory = Persistence.createEntityManagerFactory("$objectdb/db/empadd.odb");
        EntityManager entitymanager = emfactory.createEntityManager();
        entitymanager.getTransaction().begin();
        Set<Employee> employee = new HashSet<Employee>();
        Set<Address> address = new HashSet<Address>();
        Employee emp = new Employee(1, "ram", employee);
        Employee emp2 = new Employee(2, "john", employee);

        Address add = new Address(1, "bbsr", "444", address);
        Address add2 = new Address(2, "delhi", "747",address);
        employee.add(emp);
        employee.add(emp2);
        address.add(add);
        address.add(add2);
        entitymanager.persist(emp);
        entitymanager.persist(emp2);

        entitymanager.persist(add);
        entitymanager.persist(add2);

        entitymanager.getTransaction().commit();
        entitymanager.close();
        emfactory.close();

    }
}

指定されたコードを実行すると、output: packagename.Address packagename.Employee および Employee 内のような出力が生成されます。