package myorg.relex.one2one;
   
   import java.util.Date;
   
   import javax.persistence.*;
   
   /**
    * Provides example of one-to-one unidirectional relationship 
    * using a primary key join.
   */
  @Entity
  @Table(name="RELATIONEX_EMPLOYEE")
  public class Employee {
  	@Id //pk value must be assigned, not generated
  	private int id;
  	
  	@OneToOne(optional=false,fetch=FetchType.EAGER)
  	@PrimaryKeyJoinColumn //informs provider the FK derived from PK
  	private Person person;
  
  	@Temporal(TemporalType.DATE)
  	private Date hireDate;
  	
  	protected Employee() {}
  	public Employee(Person person) {
  		this.person = person;
  		if (person != null) { id = person.getId(); }
  	}
  
  	public int getId() { return person.getId(); }
  	public Person getPerson() { return person; }
  
  	public Date getHireDate() { return hireDate; }
  	public void setHireDate(Date hireDate) {
  		this.hireDate = hireDate;
  	}
  }