Java @ IdClass with @ Inheritance(策略= InheritanceType. SINGLE_TABLE)

我用冬眠. 我有一堂抽象课:

@Data
@Entity
@Table(schema = "timesheetdb", name = "project_property")
@IdClass(ProjectPropertyPK.class)
@Inheritance(strategy = InheritanceType.SINGLE_TABLE)
@DiscriminatorColumn(name = "type")
public abstract class ProjectPropertyAbstract {

    @Id
    private Integer projectId;

    @Id
    private String type;
}

@Data
@Embeddable
public class ProjectPropertyPK implements Serializable {

    private Integer projectId;
    private String type;
}

和继承人

@Data
@Entity
@DiscriminatorValue("WAGE_FUND")
public class ProjectWageFundProperty extends ProjectPropertyAbstract {

    private Boolean isEnabled;
    private Integer percentProfit;
}

@Data
@Entity
@DiscriminatorValue("CROSS_STAFFING")
public class ProjectCrossStaffingProperty extends ProjectPropertyAbstract {
    
    private Boolean isEnabled;
}

我希望在类的后代中指定属性的类型是可能的，并且所有属性都存储在一个表中.

此外，在当前的实现中，启动服务器时会出现错误: Repeated column in mapping for entity: com.timesheet.entity.project.property.ProjectCrossStaffingProperty column: type (should be mapped with insert="false" update="false")

我试图在"type"字段上方指定@列注释(insert ="false"update ="false")，但是在保存和检索数据时，"type"字段被指定为null，因此不可能返回唯一属性.