[HandlerName("Has Long Position Active")]
    [HandlerCategory("Position")]
    public class HasLongPositionActive : IBar2BoolHandler
    {
        public bool Execute(ISecurity source, int barNum)
        {
            if (source is ISecurityRt)
            {
                return Internal(source, barNum);
            }
            var pos = source.Positions.LastLongPositionActive;
            if (pos != null && pos.EntryBarNum > barNum)
            {
                return Internal(source, barNum);
            }
            var isActive = pos != null && pos.EntryBarNum <= barNum;
            pos = source.Positions.LastLongPositionClosed;
            return isActive || !(pos == null || pos.ExitBarNum <= barNum);
        }

        private static bool Internal(ISecurity source, int barNum)
        {
            foreach (var ps in source.Positions)
            {
                if(ps.IsShort)
                {
                    continue;
                }
                if (ps.EntryBarNum <= barNum)
                {
                    if (ps.IsActive)
                    {
                        return true;
                    }
                    if (ps.ExitBarNum > barNum)
                    {
                        return true;
                    }
                }
            }
            return false;
        }
    }