JPA为每个项目选择最新实例

我想我已经有了这个查询。

select m from Meeting m     where m.meetingDate =         (select max(m1.meetingDate)  from Meeting m1  where m1.attendee = m.attendee )    and not exists         (select m2 from Meeting m2  where m2.attendee = m.attendee  and m2.meetingDate > m.meetingDate)