Question

@Entity
@Table(name="users")
public class User implements Serializable 
{
    private List<Request> sentRequest;
    private List<Request> receivedRequest;
    private Profile profile;
}

public  List<Object> getUserProfiles(Integer userid) 
{
    query = em.createQuery(
            "SELECT p from Profile p1,Profile p2 WHERE " + 
            "p1.user.sentRequest.sender.id (:id) NOT IN " + 
            " p2.user.receivedRequest.receiver.id and " + 
            "p1.user.id NOT IN (:id)"
        ).setParameter("id",userid);

我在上面尝试查询它是非法尝试取消引用收集。这种关系是用户 - 配置文件OneToOne和用户 - 请求OneToMany

我想选择那些尚未发送请求的用户个人资料以及自己的个人资料。

Answer 1

问题在于代码的这一部分p1.user.sentRequest.sender.id (:id) NOT IN参数必须在NOT IN之后p1.user.sentRequest.sender.id NOT IN (:id)

JPA：非法尝试取消引用收集

1 个答案: