使用JPA的@SecondaryTable来实现hibernate的混合使用“每个类分层结构一张表”和“每个子类一张表”的功能

@Entity
@Table(name = " T_BASE " )
@Inheritance(strategy = InheritanceType.SINGLE_TABLE)
@DiscriminatorColumn(name = " CATEGORY " ,discriminatorType = DiscriminatorType.STRING)
public class BaseDomain ... {
}

@Entity
@DiscriminatorValue( " sub1 " )
public class SubDomain1 extends BaseDomain ... {
}

@Entity
@SecondaryTable(name = " T_SUB2 " )
@DiscriminatorValue( " sub2 " )
public class SubDomain2 extends BaseDomain ... {
privateStringext;

@Column(table="T_SUB2",name="EXT2")
publicStringgetExt()...{
returnext;
}
publicvoidsetExt(Stringext)...{
this.ext=ext;
}
}