摘要：
@Entity@Inheritance(strategy=InheritanceType.SINGLE_TABLE)@DiscriminatorColumn()public class Animal { } @Entity@DiscriminatorValue(value= "P")public c 阅读全文
摘要：
User to Group, Many to One的关系 Test Case 1: session.beginTransaction(); user.setGroup(group); session.save(group); session.save(user); session.getTrans 阅读全文