R – Nhibernate Icriteria Enum flags (BitMask) support

[Flags]

public enum ShowProductOn : short

{

    HomePage = 1,

    SalesPage = 2,

    NewsLetter = 4

};

Valid values for this enum:

1 – HomePage

2 – SalesPage

3 – HomePage, SalesPage

4 – NewsLetter

5 – HomePage, NewsLetter

6 – SalesPage, NewsLetter

7 – HomePage, SalesPage, NewsLetter

I would like to write a criteria that returns all the products on homepage.
To check it in c# is very simple:

if ((MY_PARAM & ShowProductOn.HomePage) == ShowProductOn.HomePage)

Console.WriteLine("Yes");

in Sql it's also very simple:

DECLARE @BitMask int = 3

IF ((@BitMask & 1) = 1)

BEGIN

Print('Yes')

END

This is the NH Criteria that I wrote to return all products on homepage (should match 1|3|5|7):

ICriteria criteria = NHibernateSession.CreateCriteria()
.Add(Restrictions.Eq("ShowProductOn", ShowProductOn.HomePage));

This criteria returns only items with "ShowProductOn"=1 but ignores the other matched items with "ShowProductOn"=3|5|7.

Does anyone knows the ICriteria /HQL syntax to write a criteria that will return all items with "ShowProductOn"=1|3|5|7 ?

Shay.