How can I put List in WHERE for Linq-to-NHiberbnate query if it has nulls in it?

I'm using nHibernate and trying to make query.

Example:

I have List<Entity> - this will be entities to filter

I have List<int?> - this will be filter with values of some Entity.SomeId field

this list will contain values: 0,1,2,3,null

I want to make query like this:

List<int?> filters;//1,2,3,null
List<Entity> entities; // some entities
Entities.Where(entity => filters.Contains(Enentity.SomeId)).ToList();

nHibernate makes query(kind of):

select * from entities where 开发者_如何学编程entity.someId in (....);

result: returned all filtered records i need except entities where entity.SomeId == null

What's wrong with it? is there some workaround for such stuff?

I would use a compound condition and use a list of int instead of int?.

List<int> filters;//1,2,3
List<Entity> entities; // some entities
Entities.Where(entity => entity.SomeId == null
                           || filters.Contains(Enentity.SomeId))
        .ToList();