Is it possible to use `SqlDbType.Structured` to pass Table-Valued Parameters in NHibernate?

I want to pass a collection of ids to a stored procedure that will be mapped using NHibernate. This technique was introduced in Sql Server 2008 ( more info here => Table-Valued Parameters ). I just don't want to pass multiple ids within an nvarchar parameter and then chop its value on the SQL Server side.

My first, ad hoc, idea was to implement my own IType.

public class Sql2008Structured : IType {
    private static readonly SqlType[] x = new[] { new SqlType(DbType.Object) };
    public SqlType[] SqlTypes(NHibernate.Engine.IMapping mapping) {
        return x;
    }

    public bool IsCollectionType {
        get { return true; }
    }

    public int GetColumnSpan(NHibernate.Engine.IMapping mapping) {
        return 1;
    }

    public void NullSafeSet(DbCommand st, object value, int index, NHibernate.Engine.ISessionImplementor session) {
        var s = st as SqlCommand;
        if (s != null) {
            s.Parameters[index].SqlDbType = SqlDbType.Structured;
            s.Parameters[index].TypeName = "IntTable";
            s.Parameters[index].Value = value;
        }
        else {
            throw new NotImplementedException();
        }
    }

    #region IType Members...
    #region ICacheAssembler Members...
}

No more methods are implemented; a throw new NotImplementedException(); is in all the rest. Next, I created a simple extension for IQuery.

public static class StructuredExtensions {
    private static readonly Sql2008Structured structured = new Sql2008Structured();

    public static IQuery SetStructured(this IQuery query, string name, DataTable dt) {
        return query.SetParameter(name, dt, structured);
    }
}

Typical usage for me is

DataTable dt = ...;
ISession s = ...;
var l = s.CreateSQLQuery("EXEC some_sp @id = :id, @par1 = :par1")
            .SetStructured("id", dt)
            .SetParameter("par1", ...)
            .SetResultTransformer(Transformers.AliasToBean<SomeEntity>())
            .List<SomeEntity>();

Ok, but what is an "IntTable"? It's the name of SQL type created to pass table value arguments.

CREATE TYPE IntTable AS TABLE
(
    ID INT
);

And some_sp could be like

CREATE PROCEDURE some_sp
    @id IntTable READONLY,
    @par1 ...
AS
BEGIN
...
END

It only works with Sql Server 2008 of course and in this particular implementation with a single-column DataTable.

var dt = new DataTable();
dt.Columns.Add("ID", typeof(int));

It's POC only, not a complete solution, but it works and might be useful when customized. If someone knows a better/shorter solution let us know.