Question

我有三个Domain类

1.Question
2.Test
3.Category

我与这些域有关系

1.Category has many test and test belong to a category
2.Category has many questions and question belongs to a category.
3.Test has many questions and question can belong to many tests.

我已经写了以下标准，但这并不是我想要的输出。你能告诉我这里我做错了吗。

Session session = getSession();
        List<String> tests = getCategoryTestIds(categoryId);
        List<Question> questions;

        questions =  session.createCriteria(Question.class)
                     .createAlias("tests", "test")
                     .add(Restrictions.and(
                             Restrictions.eq("category", new Category(categoryId)),
                             Restrictions.not(Restrictions.in("test.id", tests))))
                    .setMaxResults(10)
                    .addOrder(Order.asc("id"))
                    .list();
        }

我将问题列为空列表。我已经在db中检查了结果。理想情况下，这应该给我一个10个问题对象的列表。

以上标准正在进行

选择属于某个类别且不属于任何测试的所有问题。

Hibernate Query正在关注

select this_.id as id1_3_3_, this_.answer as answer2_3_3_, this_.category_id as categor11_3_3_, this_.explanation as explanat3_3_3_, this_.level as level4_3_3_, this_.option_a as option5_3_3_, this_.option_b as option6_3_3_, this_.option_c as option7_3_3_, this_.option_d as option8_3_3_, this_.question as question9_3_3_, this_.set_id as set10_3_3_, category3_.id as id1_0_0_, category3_.name as name2_0_0_, tests4_.question_id as question1_3_, test1_.id as test2_6_, test1_.id as id1_5_1_, test1_.category_id as category3_5_1_, test1_.name as name2_5_1_, category6_.id as id1_0_2_, category6_.name as name2_0_2_ from question this_ left outer join category category3_ on this_.category_id=category3_.id inner join test_question tests4_ on this_.id=tests4_.question_id inner join test test1_ on tests4_.test_id=test1_.id left outer join category category6_ on test1_.category_id=category6_.id where (this_.category_id=? and not (test1_.id in (?, ?))) order by this_.id asc limit ?

我已经尝试过这个查询并获得了以下hibernate sql查询

questions =  session.createCriteria(Question.class)
                     .createAlias("tests", "test")
                     .add(Restrictions.eq("category.id", categoryId))
                     .add(Restrictions.isNull("tests"))
                    .setMaxResults(10)
                    .addOrder(Order.asc("id"))
                    .list();



  question this_ 

    left outer join category category3_ on this_.category_id=category3_.id

    inner join test_question tests4_ on this_.id=tests4_.question_id 

    inner join test test1_ on tests4_.test_id=test1_.id 

    left outer join category category6_ on test1_.category_id=category6_.id 

    where this_.category_id=? and this_.id is null 

    order by this_.id asc limit ?

错误在where this_.category_id=? and this_.id is null附近，它正在检查问题的ID而不是测试

Hibernate Criteria Query问题

0 个答案: