Java Hibernate使用错误类型的@discriminatorvalues子类生成查询

我拥有连接类型的实体的继承关系

@Entity
@Table(name = "MSM_SUBSCRIPTION")
@DiscriminatorColumn(name = "SUBSCRIPTIONTYPE", discriminatorType = DiscriminatorType.STRING, length = 100)
class subscription {
}


@DiscriminatorValue("com.xxx.XXXSubscription")
@Table(name = "XXX")

public class XXXSubscription extends Subscription implements Serializable {

}

当我尝试使用命名查询时，例如

SELECT s.class AS subscriptiontype,
FROM
Subscription s

它将导致以下查询

select

       case 

           when s1_.subscriptionId is not null then com.xxx.XXXSubscription
           when s.subscriptionId is not null then 'Subscription' 
       end AS subscriptiontype,

   from

       MSM_SUBSCRIPTION s 

   left outer join
       XXXSubscription s1_ 
           on s.subscriptionId=s6_.subscriptionId

它抛出一个错误，如下所示

-ORA-00904: "COM"."xxx"."MMSSUBSCRIPTION": invalid identifier

正如我所注意到的，在生成的查询中，case语句周围没有标记，在使用DiscriminatorValue'com.xxx.XXXSubscription'周围的标记手动触发此查询时，查询运行良好

有人能帮忙吗？？？

试试这个 您可以使用@heritation注释定义超类

@Entity
@Table(name = "MSM_SUBSCRIPTION")
**@Inheritance(strategy = InheritanceType.SINGLE_TABLE)**
@DiscriminatorColumn(name = "SUBSCRIPTIONTYPE", discriminatorType = DiscriminatorType.STRING, length = 100)
class subscription {
}


@DiscriminatorValue("com.xxx.XXXSubscription")
@Table(name = "XXX")

public class XXXSubscription extends Subscription implements Serializable {

}

---

在我看来，您需要在超类上使用@heritation标记，这样子类只需要@discriminatorvalue（“”）