Hibernate3 Learning Notes (15) | Inheritance mapping

Here are 3 ways to discuss inheritance mappings in detail:

1.Table per concrete class

The inheritance relationship follows the following figure:

The data table is designed as follows:

The MySQL database performs the following DDL:

1.CREATE TABLE DefaultUser (
2.    ID INT (one) not NULL auto_increment PRIMARY KEY,
3.    name VARCHAR not NULL default ',
4.    someproperty VARCHAR (100)
5.);
6.
7.CREATE TABLE PowerUser (
8.    ID INT (one) not NULL auto_increment PRIMARY KEY,
9.    name VARCHAR not NULL default ',
    otherproperty VARCHAR (100)
11.);

User.java

1.package Com.hb3.pack_08.model;
2.
3.public class User {
4.
5.    Private Integer ID;
6.    private String name;
7.
8. Public    User () {
9.    }
Ten.    Public Integer getId () {
return        ID;
.    }
Public    void SetId (Integer id) {
        this.id = ID;
.    }
Public    String GetName () {
return        name;
.    }
Public    void SetName (String name) {
        this.name = name;
A.    }
23.}