java - 在 Hibernate 中使用注释映射接口(interface)集合

Question

我有一个名为 Rule 的接口(interface)，它有 2 个实现类，它们都共享一个抽象基类。

@MappedSuperclass
public interface Rule { .. }

@Entity
@Inheritance(strategy = InheritanceType.TABLE_PER_CLASS)
public abstract class BaseRule implements Rule {

@Entity
public class ImlementingRule1 extends BaseRule { 

@Entity
public class ImlementingRule1 extends BaseRule { 

我在 containingRules 类中使用这个 Rule 接口(interface):

@OneToMany
@JoinColumn(name = "RULES_ID")
private List<Rule> rules;

无论我尝试什么设置，我总是以:

Caused by: org.hibernate.MappingException: Cannot use identity column key generation with <union-subclass> mapping for: mynamespace.BaseRule

Answer 1

除了使用抽象基类而不是接口(interface)，我个人没有找到其他解决方案。

@OneToMany
@JoinColumn(name = "RULES_ID")
private List<BaseRule> rules;

上面写着 right here :

Annotating interfaces is currently not supported.