Opc.Ua.Server.StatusAggregateCalculator.ComputeWorstQuality C# (CSharp) Method

        protected DataValue ComputeWorstQuality(TimeSlice slice, bool includeBounds)
        {
            // get the values in the slice.
            List<DataValue> values = null;
            
            if (!includeBounds)
            {
                values = GetValues(slice);
            }
            else
            {
                values = GetValuesWithSimpleBounds(slice);
            }

            // check for empty slice.
            if (values == null || values.Count == 0)
            {
                return GetNoDataValue(slice);
            }

            // get the regions.
            List<SubRegion> regions = GetRegionsInValueSet(values, false, true);

            StatusCode worstQuality = StatusCodes.Good;
            int badQualityCount = 0;
            int uncertainQualityCount = 0;

            for (int ii = 0; ii < values.Count; ii++)
            {
                StatusCode quality = values[ii].StatusCode;

                if (StatusCode.IsBad(quality))
                {
                    badQualityCount++;

                    if (StatusCode.IsNotBad(worstQuality))
                    {
                        worstQuality = quality.CodeBits;
                    }

                    continue;
                }

                if (StatusCode.IsUncertain(quality))
                {
                    uncertainQualityCount++;

                    if (StatusCode.IsGood(worstQuality))
                    {
                        worstQuality = quality.CodeBits;
                    }

                    continue;
                }
            }

            // set the timestamp and status.
            DataValue value = new DataValue();
            value.WrappedValue = new Variant(worstQuality, TypeInfo.Scalars.StatusCode);
            value.SourceTimestamp = GetTimestamp(slice);
            value.ServerTimestamp = GetTimestamp(slice);
            value.StatusCode = value.StatusCode.SetAggregateBits(AggregateBits.Calculated);

            if ((StatusCode.IsBad(worstQuality) && badQualityCount > 1) || (StatusCode.IsUncertain(worstQuality) && uncertainQualityCount > 1))
            {
                value.StatusCode = value.StatusCode.SetAggregateBits(value.StatusCode.AggregateBits | AggregateBits.MultipleValues);
            }

            // return result.
            return value;
        }
        #endregion