NHibernate搜索特定子类

可以在NHibernate中过滤特定的连接子类吗

例如，我有以下课程：

Pet { Name }
Cat: Pet { Paws }
Budgie: Pet { Wings }
Person { Pets }

我想创建一个NHibernate搜索，给我一个有四只爪子的猫的人

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我似乎只能限制宠物的属性（名称）…。

你应该试试这样的方法。我还没有测试过，所以我不是100%确定

 DetachedCriteria fetchCatsWith4Pawns = DetachedCriteria.For<Cat>();
 fetchCatsWith4Pawns.Add(Restrictions.Eq("Pawns", 4));
 fetchCatsWith4Pawns.SetProjection(Projections.Id());

 DetachedCriteria fetchPersonsWithCatsWith4Pawns = DetachedCriteria.For<Person>();
 fetchPersonsWithCatsWith4Pawns.CreateCriteria("Pets", "pet").Add(Subqueries.PropertyIn("pet.id", fetchCatsWith4Pawns));
 fetchPersonsWithCatsWith4Pawns.GetExecutableCriteria(session).List<Person>();

DetachedCriteria fetchCatsWith4Pawns=DetachedCriteria.For（）；
fetchCatsWith4Pawns.Add（Restrictions.Eq（“典当”，4））；
fetchCatsWith4Pawns.SetProjection（Projections.Id（））；
DetachedCriteria FetchPersonWithCatswith4Pawns=DetachedCriteria.For（）；
fetchPersonswith4pawns.CreateCriteria（“Pets”、“pet”）.Add（subquerys.PropertyIn（“pet.id”，fetchCatsWith4Pawns））；
fetchPersonswith4pawns.GetExecutableCriteria（session.List（）；

你应该试试这样的方法。我还没有测试过，所以我不是100%确定

 DetachedCriteria fetchCatsWith4Pawns = DetachedCriteria.For<Cat>();
 fetchCatsWith4Pawns.Add(Restrictions.Eq("Pawns", 4));
 fetchCatsWith4Pawns.SetProjection(Projections.Id());

 DetachedCriteria fetchPersonsWithCatsWith4Pawns = DetachedCriteria.For<Person>();
 fetchPersonsWithCatsWith4Pawns.CreateCriteria("Pets", "pet").Add(Subqueries.PropertyIn("pet.id", fetchCatsWith4Pawns));
 fetchPersonsWithCatsWith4Pawns.GetExecutableCriteria(session).List<Person>();

DetachedCriteria fetchCatsWith4Pawns=DetachedCriteria.For（）；
fetchCatsWith4Pawns.Add（Restrictions.Eq（“典当”，4））；
fetchCatsWith4Pawns.SetProjection（Projections.Id（））；
DetachedCriteria FetchPersonWithCatswith4Pawns=DetachedCriteria.For（）；
fetchPersonswith4pawns.CreateCriteria（“Pets”、“pet”）.Add（subquerys.PropertyIn（“pet.id”，fetchCatsWith4Pawns））；
fetchPersonswith4pawns.GetExecutableCriteria（session.List（）；