爲什麼hibernate Criteria不在criteria.list（）的結果中維護順序？

Question

我正在做的MySql查詢與在Java中使用hibernate標準。我在下面給出了我的代碼的小圖片。

 Criteria criteria = getCurrentSession().createCriteria(A.class, "a"); 
     ProjectionList projections = Projections.projectionList(); 

     projections.add(Projections.distinct(Projections.property("a.column_of_a"))); 
     projections.add(Projections.property("b.column_of_b")); 
     projections.add(Projections.property("c.column_of_c")); 
     criteria.setProjection(projections); 

     criteria.createAlias("a.listName1", "b", JoinType.LEFT_OUTER_JOIN); 
     criteria.createAlias("b.listName2", "c", JoinType.LEFT_OUTER_JOIN); 
     criteria.createAlias("c.listName3", "d", JoinType.LEFT_OUTER_JOIN); 

     criteria.add(Restrictions.eq("a.column_of_a", someValue)); 
     criteria.add(Restrictions.eq("c.column_of_c", someValue)); 

     criteria.addOrder(Order.asc("a.column_of_a")); 
     criteria.addOrder(Order.desc("b.column_of_b")); 

     @SuppressWarnings("unchecked") 
     List<Object[]> records = criteria.list(); 

     for(int i=0;i<3;i++) 
     { 
      Object record[] = records.get(i); 
      Object value = record[1]; 
      System.out.println("value::"+value); 
     } 

我現在的問題是，當我得到在Java代碼中的結果和我在eclipse打印控制檯我得到不同的順序每次執行代碼時的結果。但是當我從控制檯複製並粘貼MySql查詢到MySql編輯器時，我每次都得到相同的結果。當然，在mySql編輯器中必須給出相同的結果。但沒有得到爲什麼hibernate標準每次都以不同順序給出結果？

在此先感謝。每個答案都會很感激。

Answer 1

Criteria criteria = getCurrentSession().createCriteria(A.class, "a"); 


    criteria.createAlias("a.listName1", "b", JoinType.LEFT_OUTER_JOIN); 
    criteria.createAlias("b.listName2", "c", JoinType.LEFT_OUTER_JOIN); 
    criteria.createAlias("c.listName3", "d", JoinType.LEFT_OUTER_JOIN); 

    ProjectionList projections = Projections.projectionList(); 

    projections.add(Projections.distinct(Projections.property("a.column_of_a"))); 
    projections.add(Projections.property("b.column_of_b")); 
    projections.add(Projections.property("c.column_of_c")); 
    criteria.setProjection(projections); 

    criteria.add(Restrictions.eq("a.column_of_a", someValue)); 
    criteria.add(Restrictions.eq("c.column_of_c", someValue)); 

    criteria.addOrder(Order.asc("a.column_of_a")); 
    criteria.addOrder(Order.desc("b.column_of_b")); 

    @SuppressWarnings("unchecked") 
    List<Object[]> records = criteria.list(); 

    for(int i=0;i<3;i++) 
    { 
     Object record[] = records.get(i); 
     Object value = record[1]; 
     System.out.println("value::"+value); 
    } 

我認爲你的代碼是在創建別名之前投射屬性。嘗試上面的代碼...