NHibernateクエリのヘルプが必要です

Question

次のクエリをICriteriaまたはLINQに変換することはできますか？

SELECT Test.personid 
    FROM 
    (
     SELECT r.PersonId AS personid, e.ActivityId 
     FROM Event e 
     INNER JOIN Registration r ON e.Id = r.EventId 
     WHERE e.ActivityId IN (1, 2) 
     GROUP BY r.PersonId, e.ActivityId 
    ) AS Test 

    GROUP BY Test.personid 
    HAVING COUNT(Test.ActivityId) >= 2 

Answer 1

var result = from r in session.Query<Registration>() 
      where r.Event.ActivityId == 1 || r.Event.ActivityId == 2 
      group r by r.Person into g 
      where g.Min(x => x.Event.ActivityId) != g.Max(x => x.Event.ActivityId) 
      select g.Key 

次の状態、すべての人が、クエリは常に何も返さないだろう

ActivityId == 1 || ActivityId == 2 
Having Count(r.Event.ActivityId) >= 2