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one-to-one mapping of a fkey ref pkey in same table

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prk3777

Post subject: one-to-one mapping of a fkey ref pkey in same table

Posted: Thu Jun 28, 2007 5:18 am

Newbie

Joined: Thu Jun 28, 2007 2:08 am
Posts: 1
Location: Bangalore

I have two columns in a single table,
EmployeeID (Primary Key)
ManagerID (Foreign Key Ref EmployeeID)
How to create a one-to-one relational mapping of ManagerID?

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Torax

Post subject:

Posted: Thu Jun 28, 2007 6:09 am

Newbie

Joined: Thu Jun 21, 2007 8:01 am
Posts: 5

Hi,

there is actualy an example for this in the Hibernate documentation (and in the book, see link at top)

something like:

Code:

import javax.persistence.*;

@Entity
@Table ( name = "EMPLOYEE" )
public class Employee {

  @Id
  @GeneratedValue
  @Column(name = "EmployeeID")
  private Long employeeID;

  @ManyToOne(cascade = CascadeType.ALL)
  @JoinColumn(name = "ManagerID")
  private Message managerID

  <snip>other attributes here<snip>
} 

Hope this helps.

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