EnumerationType.cs

public class EnumerationType<T> : PrimitiveType where T : Enumeration<T>
{
    public EnumerationType()
        : base(new SqlType(DbType.Int32))
    {
    }

    public override object Get(IDataReader rs, int index)
    {
        var o = rs[index];
        var value = Convert.ToInt32(o);
        return Enumeration<T>.FromInt32(value);
    }

    public override object Get(IDataReader rs, string name)
    {
        var ordinal = rs.GetOrdinal(name);
        return Get(rs, ordinal);
    }

    public override Type ReturnedClass
    {
        get { return typeof(T); }
    }

    public override object FromStringValue(string xml)
    {
        return int.Parse(xml);
    }

    public override string Name
    {
        get { return "enumeration"; }
    }

    public override void Set(IDbCommand cmd, object value, int index)
    {
        var parameter = (IDataParameter)cmd.Parameters[index];

        var val = (Enumeration<T>)value;

        parameter.Value = val.Value;
    }

    public override string ObjectToSQLString(object value, Dialect dialect)
    {
        return value.ToString();
    }

    public override Type PrimitiveClass
    {
        get { return typeof(int); }
    }

    public override object DefaultValue
    {
        get { return 0; }
    }
}