不能在JPQL中按ORDER BY列

Question

我试图通过JPQL查询声明中的字段进行排序,看起来它应该非常简单,但我不断收到编译器错误.

我正在尝试通过UserClockDate列进行排序,该列是UserTime行的一部分.但每次我尝试编译时都会收到错误:

严重:命名查询出错:fetchIfUserIsClockedInWithUser org.hibernate.QueryException:无法解析属性:UserClockDate of:models.UserTime [SELECT ut FROM models.UserTime ut WHERE USER_ID =:user ORDER BY ut.UserClockDate DESC]

如果我只是取出ORDER BY它编译好了.

这是班级本身的相关部分:

@NamedQueries({
        @NamedQuery(name = "fetchAllUserTimes", query = "SELECT ut FROM UserTime ut"),
        @NamedQuery(name = "fetchIfUserIsClockedInWithUser", query = "SELECT ut FROM UserTime ut WHERE USER_ID = :user ORDER BY ut.UserClockDate DESC") 
    })
@Entity
@Table(name = "userTime")
@Component
public class UserTime implements Serializable {
    private static final long serialVersionUID = 1L;

    @Id
    @GeneratedValue
    @Column(name = "UserTimeId")
    private int userTimeId;

    @ManyToOne
    @JoinColumn(name = "USER_ID")
    private User user;

    @Column(name = "UserClockIn")
    @Type(type="org.joda.time.contrib.hibernate.PersistentDateTime")
    private DateTime userClockIn;

    @Column(name = "UserClockOut")
    @Type(type="org.joda.time.contrib.hibernate.PersistentDateTime")
    public DateTime userClockOut;

    @Column(name = "UserClockDate")
    @Type(type="org.joda.time.contrib.hibernate.PersistentDateTime")
    public DateTime userClockDate;

任何你能给我的帮助将不胜感激!

Answer 1

你的意思是你尝试按不存在的字段排序？UserClockDate应该是userClockDate