JPA：嵌入了一个嵌入式嵌入式实体

Question

我有一个实体，在其中嵌入了另一个嵌入了embeddeid的实体。当我使用第一个实体时，我得到了这个例外：

it.test.tesctclassPK must not have @Id properties when used as an @EmbeddedId: it.test.firstClass.test.id

但是在密钥类中没有@id注释，甚至在嵌入式类中也没有。

修改

Firstclass是非嵌入类，test是可嵌入类，testpk是嵌入类的嵌入式。

编辑2

的Firstclass

@Entity
@Table(name = "sometable", schema = "someschema")
public class FirstClass implements Serializable {
    private static final long serialVersionUID = 1L;
    private FirstClassPK id;
    @Embedded
    private Test test;
    public FirstClass() {
    }
    /*various attribute getters and setters*/
}

测试

@Entity
@Table(name="sometable", schema="somechema")
@Embeddable
public class Test implements Serializable {
    private static final long serialVersionUID = 1L;
    private TestPK id;
    public Test() {
    }

    @EmbeddedId
    public TestPK getId() {
        return this.id;
    }
    /*various attribute, getters and setters*/
}

TestPk

Test

@Entity
@Table(name="sometable", schema="somechema")
@Embeddable
public class TestPk implements Serializable {
    private static final long serialVersionUID = 1L;

    public TestPk() {
    }

    /*various attribute, getters and setters*/
}