具有外键关系的Hibernate子类

Question

I need some help defining the following object hierarchy/ database relationship in Hibernate

From the object sense – Agent is inherited from Person and Agency is inherited from Organization. they are inherited from Party which can have multiple Addresses associated with it

The database consists of

Agent
-ID
-Name
-PartyID (references Party.ID)

Agency
-ID
-Name
-PartyID (references Party.ID)

Address
-AddrID
-PartyID (references Party.ID)
-Street

Party.
-PartyID

Answer 1

this article could help you. includes src as well.

http://www.ibm.com/developerworks/java/library/j-hibernate/

community page

http://docs.jboss.org/hibernate/core/3.3/reference/en/html/inheritance.html

Answer 2

Something like the following could be a start

@Entity
public class Party {

  @Id
  private BigInteger partyID;

  private String name;

  @OneToMany(mappedBy="party")
  private Set<Address> addresses;

} 

@Entity
public class Organization extends Party {} 

@Entity
public class Person extends Party {} 

@Entity
public class Agency extends Organization {} 

@Entity
public class Agent extends Person {}

@Entity
public class Address{

  @Id
  private BigInteger addressID;

  @ManyToOne
  private Party party;

  private String street;
}