Nhibernate generic method to Query different Model

Question

I have created a generic function for nHibernate to convert List to Bean which works fine however I need a way to do conversion in a generic way without calling AddScalar(as commented in my code) to my query that is assume I have over 50 model pojo and want to use same generic method to pull list of records how can I achieve this. This is my generic Method that I want to use to any model and pass associated query.

public static IList<T> getRawQuery<T>(string query)//
{
    IList<T> ls = new List<T>();
    ISession session = MyHibernateUtil.openSession();
    try
    {
        ls = session.CreateSQLQuery(@query)
            .AddScalar("total", NHibernate.NHibernateUtil.Int32)//dont want to do this
            .AddScalar("product_name", NHibernate.NHibernateUtil.String)//this will force me to have several methods doing same work
            .AddScalar("barcode", NHibernate.NHibernateUtil.String)
            .SetResultTransformer(Transformers.AliasToBean(typeof(T)))
            .List<T>();

    }
    catch (Exception ex)
    {
        Console.WriteLine(ex);
    }
    finally
    {
        MyHibernateUtil.CloseSession(session);
    }
    return ls;
}

and here is my one of my model

public class SalesModel
{
    public virtual String barcode { get; set; }
    public virtual String product_name { get; set; }
    public virtual int total { get; set; }
}