JPA MappedSuperClass

Question

我在我的hibernate项目中使用@MappedSuperclass：

@MappedSuperclass
public abstract class AbstractHotel extends AbstractData {
    protected String id;
    protected String name;
    protected String type;
    ....
}

@Entity
@Table(name = "T_HOTEL")
public class Hotel extends AbstractHotel {
    @AttributeOverride(name = "id", column = @Column(name = "hotel_id"))
    protected String id;

    @AttributeOverride(name = "name", column = @Column(name = "hotel_name"))
    protected String name;

    @AttributeOverride(name = "type", column = @Column(name = "hotel_type"))
    protected String type;

    ...
}

如图所示，我希望列可以在子类中被覆盖，但是我收到错误：

org.hibernate.MappingException: Duplicate property mapping of id found in cn.test.Hotel

有可能解决这个问题吗？

Answer 1

您不应该在子类中再次定义字段：请查看：https://stackoverflow.com/a/5258090/286588