public override DataValue Compute(IAggregationContext context, TimeSlice bucket, AggregateState state)
{
DataValue dv = base.Compute(context, bucket, state);
double duration = Convert.ToDouble(dv.Value) / Math.Abs((bucket.To - bucket.From).TotalMilliseconds) * 100;
dv.Value = duration;
return dv;
}
protected override StatusCode ComputeStatus(IAggregationContext context, int numGood, int numBad, TimeSlice bucket)
{
StatusCode code = base.ComputeStatus(context, numGood, numBad, bucket);
if (code.CodeBits == StatusCodes.GoodNoData) // can be removed if GoodNoData is used.
code = StatusCodes.Good;
return code;
}
public override DataValue Compute(IAggregationContext context, TimeSlice bucket, AggregateState state)
{
DataValue initValue = bucket.EarlyBound.Value, finalValue = bucket.LateBound.Value;
IEnumerator<DataValue> enumerator = bucket.Values.GetEnumerator();
if (initValue == null && enumerator.MoveNext()) // first element
{
initValue = enumerator.Current;
bucket.Incomplete = true;
}
if (finalValue == null)
{
while (enumerator.MoveNext())
{
finalValue = enumerator.Current;
}
bucket.Incomplete = true;
}
DataValue retVal = base.Compute(context, bucket, state);
if (retVal.StatusCode.CodeBits == StatusCodes.BadNoData)
retVal.Value = null;
else
retVal.Value = Convert.ToDouble(retVal.Value) /
Math.Abs((finalValue.SourceTimestamp - initValue.SourceTimestamp).TotalMilliseconds); // revisit
return retVal;
}
public override DataValue Compute(IAggregationContext context, TimeSlice bucket, AggregateState state)
{
List<DataValue> l = new List<DataValue>(bucket.Values);
DataValue dv = l.Count > 0 ? GetDataValue(l) : null;
if (SteppedVariable && dv == null)
dv = bucket.LateBound.Value;
DataValue retval = new DataValue();
StatusCode code = StatusCodes.BadNoData;
if (dv != null)
{
code = StatusCode.IsNotGood(dv.StatusCode)
? StatusCodes.UncertainDataSubNormal
: StatusCodes.Good;
retval.SourceTimestamp = dv.SourceTimestamp;
retval.Value = dv.Value;
code.AggregateBits = AggregateBits.Raw;
if (bucket.Incomplete) code.AggregateBits |= AggregateBits.Partial;
}
else
{
retval.SourceTimestamp = bucket.From;
}
retval.StatusCode = code;
return retval;
}
protected override StatusCode ComputeStatus(IAggregationContext context, int numGood, int numBad, TimeSlice bucket)
{
StatusCode code = base.ComputeStatus(context, numGood, numBad, bucket);
if (bucket.EarlyBound.Value == null || StatusCode.IsNotGood(bucket.EarlyBound.Value.StatusCode))
code = StatusCodes.Uncertain;
return code;
}
/// <summary>
/// Computes the value for the timeslice.
/// </summary>
protected override DataValue ComputeValue(TimeSlice slice)
{
uint? id = AggregateId.Identifier as uint?;
if (id != null)
{
switch (id.Value)
{
case Objects.AggregateFunction_StandardDeviationPopulation:
{
return ComputeStdDev(slice, false, 1);
}
case Objects.AggregateFunction_StandardDeviationSample:
{
return ComputeStdDev(slice, false, 2);
}
case Objects.AggregateFunction_VariancePopulation:
{
return ComputeStdDev(slice, true, 1);
}
case Objects.AggregateFunction_VarianceSample:
{
return ComputeStdDev(slice, true, 2);
}
}
}
return base.ComputeValue(slice);
}
public override DataValue Compute(IAggregationContext context, TimeSlice bucket, AggregateState state)
{
int numGood = 0;
int numBad = 0;
double total = 0.0;
foreach (DataValue v in bucket.Values)
{
if (state.RawValueIsGood(v))
{
numGood += 1;
total += Convert.ToDouble(v.Value, CultureInfo.InvariantCulture);
}
else
{
numBad += 1;
}
}
DataValue retval = new DataValue { SourceTimestamp = bucket.From };
StatusCode code = ComputeStatus(context, numGood, numBad, bucket).Code;
code.AggregateBits = AggregateBits.Calculated;
if (bucket.Incomplete) code.AggregateBits |= AggregateBits.Partial;
if (StatusCode.IsNotBad(code))
retval.Value = total;
retval.StatusCode = code;
GoodDataCount = numGood;
return retval;
}
public override DataValue Compute(IAggregationContext context, TimeSlice bucket, AggregateState state)
{
int numGood = 0;
int numBad = 0;
DataValue previous = RightState(bucket.EarlyBound.Value) ? bucket.EarlyBound.Value : null;
double total = 0.0;
DataValue retval = new DataValue { SourceTimestamp = bucket.From };
StatusCode code = StatusCodes.BadNoData;
foreach (DataValue v in bucket.Values)
{
if (state.RawValueIsGood(v))
{
numGood += 1;
if (previous != null)
total += (v.SourceTimestamp - previous.SourceTimestamp).TotalMilliseconds;
previous = RightState(v) ? v : null;
}
else
{
numBad += 1;
}
}
if (previous != null)
total += (bucket.LateBound.Value.SourceTimestamp - previous.SourceTimestamp).TotalMilliseconds;
retval.Value = total;
code = ComputeStatus(context, numGood, numBad, bucket).Code;
code.AggregateBits = AggregateBits.Calculated;
if (bucket.Incomplete) code.AggregateBits |= AggregateBits.Partial;
retval.StatusCode = code;
return retval;
}
protected override StatusCode ComputeStatus(IAggregationContext context, int numGood, int numBad, TimeSlice bucket)
{
if (numGood + numBad == 0)
return StatusCodes.GoodNoData;
if (numGood == 0 && numBad > 0)
return StatusCodes.Bad;
return base.ComputeStatus(context, numGood, numBad, bucket);
}
public override DataValue Compute(IAggregationContext context, TimeSlice bucket, AggregateState state)
{
DataValue dv = base.Compute(context, bucket, state);
if (dv.SourceTimestamp != bucket.From)
{
dv.SourceTimestamp = bucket.From;
StatusCode code = dv.StatusCode;
code.AggregateBits |= AggregateBits.Calculated;
dv.StatusCode = code;
}
return dv;
}
public override DataValue Compute(IAggregationContext context, TimeSlice bucket, AggregateState state)
{
int numGood = 0;
int numBad = 0;
DataValue firstGoodDv = null;
DataValue lastGoodDv = null;
DataValue lastDv = null;
bool uncertainDataSubNormal = false;
double delta = double.NaN;
foreach (DataValue dv in bucket.Values)
{
if (state.RawValueIsGood(dv))
{
if (firstGoodDv == null)
{
firstGoodDv = dv;
}
lastGoodDv = dv;
numGood++;
}
else
{
// check for non-good value occuring before first good value
if (firstGoodDv == null)
uncertainDataSubNormal = true;
numBad++;
}
lastDv = dv;
}
if (firstGoodDv != null)
{
double fv = Convert.ToDouble(firstGoodDv.Value);
double lv = Convert.ToDouble(lastGoodDv.Value);
delta = lv - fv;
}
// check for non-good value occuring after latest good value
if (!uncertainDataSubNormal && lastGoodDv != null && lastGoodDv.SourceTimestamp < lastDv.SourceTimestamp)
uncertainDataSubNormal = true;
StatusCode code = (uncertainDataSubNormal)
? StatusCodes.UncertainDataSubNormal
: (numGood > 0) ? StatusCodes.Good : StatusCodes.BadNoData;
DataValue retval = new DataValue { SourceTimestamp = bucket.From };
if (!double.IsNaN(delta))
retval.Value = delta;
code.AggregateBits = AggregateBits.Calculated;
if (bucket.Incomplete) code.AggregateBits |= AggregateBits.Partial;
retval.StatusCode = code;
return retval;
}
protected abstract bool Comparison(DataValue value1, DataValue value2); // true if keep value1.
public override DataValue Compute(IAggregationContext context, TimeSlice bucket, AggregateState state)
{
int numGood = 0;
int numBad = 0;
DataValue valueToKeep = new DataValue() { SourceTimestamp = bucket.From, StatusCode = StatusCodes.BadNoData };
bool moreData = false;
bool hasGoodData = false;
foreach (DataValue dv in bucket.Values)
{
if (state.RawValueIsGood(dv))
{
hasGoodData = true;
if (valueToKeep.StatusCode == StatusCodes.BadNoData)
{
valueToKeep = dv;
}
else
{
moreData = valueToKeep == dv;
if (Comparison(dv, valueToKeep))
{
valueToKeep = dv;
}
}
numGood++;
}
else
{
numBad++;
if (!hasGoodData)
valueToKeep = dv;
}
}
DataValue retval = valueToKeep.StatusCode == StatusCodes.BadNoData ? valueToKeep : (DataValue)valueToKeep.Clone();
if (hasGoodData)
{
StatusCode code = StatusCodes.Good;
code = ComputeStatus(context, numGood, numBad, bucket).Code;
code.AggregateBits = moreData ? AggregateBits.ExtraData : AggregateBits.Raw;
if (bucket.Incomplete) code.AggregateBits |= AggregateBits.Partial;
retval.StatusCode = code;
} // numGood = 0, hasGoodData = false beyond this point, i.e., no good data
else if(numBad > 0)
{
retval.Value = null;
retval.StatusCode = StatusCodes.Bad;
retval.StatusCode = retval.StatusCode.SetAggregateBits(AggregateBits.Raw);
}
return retval;
}
public override DataValue Compute(IAggregationContext context, TimeSlice bucket, AggregateState state)
{
DataValue retval = new DataValue { SourceTimestamp = bucket.From };
StatusCode code = StatusCodes.BadNoData;
DataValue boundValue = context.IsReverseAggregation ? bucket.LateBound.Value : bucket.EarlyBound.Value;
if (boundValue != null)
{
code = bucket.EarlyBound.Value.StatusCode.Code;
code.AggregateBits = bucket.EarlyBound.Value.StatusCode.AggregateBits;
retval.Value = Convert.ToDouble(bucket.EarlyBound.Value.Value, CultureInfo.InvariantCulture);
}
if (bucket.Incomplete) code.AggregateBits |= AggregateBits.Partial;
retval.StatusCode = code;
return retval;
}
public override DataValue Compute(IAggregationContext context, TimeSlice bucket, AggregateState state)
{
DataValue initValue = bucket.EarlyBound.Value;
IEnumerator<DataValue> enumerator = bucket.Values.GetEnumerator();
if (enumerator.MoveNext()) // first element
{
if(initValue == null && bucket.From != enumerator.Current.SourceTimestamp)
bucket.Incomplete = true;
}
DataValue retVal = base.Compute(context, bucket, state);
if (GoodDataCount > 0)
retVal.Value = Convert.ToDouble(retVal.Value) / GoodDataCount;
else
retVal.Value = null;
return retVal;
}
public override DataValue Compute(IAggregationContext context, TimeSlice bucket, AggregateState state)
{
int numGood = 0;
int numBad = 0;
double minV = double.MaxValue;
double maxV = double.MinValue;
bool uncertainDataSubNormal = false;
double range = double.NaN;
foreach (DataValue dv in bucket.Values)
{
if (state.RawValueIsGood(dv))
{
double v = Convert.ToDouble(dv.Value);
if (minV > v)
{
minV = v;
}
if (maxV < v)
{
maxV = v;
}
numGood++;
}
else
{
uncertainDataSubNormal = true;
numBad++;
}
}
if (minV != double.MaxValue && maxV != double.MinValue)
{
range = Math.Abs(maxV - minV);
}
StatusCode code = (uncertainDataSubNormal)
? StatusCodes.UncertainDataSubNormal
: StatusCodes.Good;
if (numGood + numBad == 0) code = StatusCodes.BadNoData;
DataValue retval = new DataValue { SourceTimestamp = bucket.From };
if (!double.IsNaN(range))
retval.Value = range;
code.AggregateBits = AggregateBits.Calculated;
if (bucket.Incomplete) code.AggregateBits |= AggregateBits.Partial;
retval.StatusCode = code;
return retval;
}
public override DataValue Compute(IAggregationContext context, TimeSlice bucket, AggregateState state)
{
StatusCode returnCode = StatusCodes.BadNoData;
foreach(DataValue dv in bucket.Values)
{
if (returnCode == StatusCodes.BadNoData)
{
returnCode = dv.StatusCode;
}
else
{
// StatusCodes.Bad = 0x80000000
// StatusCodes.Uncertain = 0x40000000
// StatusCodes.Good = 0x00000000
uint code = dv.StatusCode.Code >> 28; // 7 Hexadecimal digits = 28 binary digits.
switch (code)
{
case 8: // 8 is maximum
returnCode = StatusCodes.Bad;
break;
case 4:
if(StatusCode.IsNotBad(returnCode))
returnCode = StatusCodes.Uncertain;
break;
case 0: // 0 is minimum
break;
default:
Debug.Assert(true, "should not touch this line");
throw new Exception(String.Format("Unknown error in WorstQuality aggregate calculation, code = {0}", dv.StatusCode));
}
}
}
DataValue retVal = new DataValue() { SourceTimestamp = bucket.From };
if (returnCode != StatusCodes.BadNoData)
{
retVal.Value = returnCode;
StatusCode status = StatusCodes.Good;
status.AggregateBits |= AggregateBits.Calculated;
if (bucket.Incomplete) status.AggregateBits |= AggregateBits.Partial;
retVal.StatusCode = status;
}
else
{
retVal.StatusCode = returnCode;
}
return retVal;
}
/// <summary>
/// Computes the value for the timeslice.
/// </summary>
protected override DataValue ComputeValue(TimeSlice slice)
{
uint? id = AggregateId.Identifier as uint?;
if (id != null)
{
switch (id.Value)
{
case Objects.AggregateFunction_DurationGood:
{
return ComputeDurationGoodBad(slice, false, false);
}
case Objects.AggregateFunction_DurationBad:
{
return ComputeDurationGoodBad(slice, true, false);
}
case Objects.AggregateFunction_PercentGood:
{
return ComputeDurationGoodBad(slice, false, true);
}
case Objects.AggregateFunction_PercentBad:
{
return ComputeDurationGoodBad(slice, true, true);
}
case Objects.AggregateFunction_WorstQuality:
{
return ComputeWorstQuality(slice, false);
}
case Objects.AggregateFunction_WorstQuality2:
{
return ComputeWorstQuality(slice, true);
}
}
}
return base.ComputeValue(slice);
}
/// <summary>
/// Computes the value for the timeslice.
/// </summary>
protected override DataValue ComputeValue(TimeSlice slice)
{
uint? id = AggregateId.Identifier as uint?;
if (id != null)
{
switch (id.Value)
{
case Objects.AggregateFunction_Start:
{
return ComputeStartEnd(slice, false);
}
case Objects.AggregateFunction_End:
{
return ComputeStartEnd(slice, true);
}
case Objects.AggregateFunction_Delta:
{
return ComputeDelta(slice);
}
case Objects.AggregateFunction_StartBound:
{
return ComputeStartEnd2(slice, false);
}
case Objects.AggregateFunction_EndBound:
{
return ComputeStartEnd2(slice, true);
}
case Objects.AggregateFunction_DeltaBounds:
{
return ComputeDelta2(slice);
}
}
}
return base.ComputeValue(slice);
}
/// <summary>
/// Computes the value for the timeslice.
/// </summary>
protected override DataValue ComputeValue(TimeSlice slice)
{
uint? id = AggregateId.Identifier as uint?;
if (id != null)
{
switch (id.Value)
{
case Objects.AggregateFunction_Average:
{
return ComputeAverage(slice);
}
case Objects.AggregateFunction_TimeAverage:
{
return ComputeTimeAverage(slice, false, 1);
}
case Objects.AggregateFunction_Total:
{
return ComputeTimeAverage(slice, false, 2);
}
case Objects.AggregateFunction_TimeAverage2:
{
return ComputeTimeAverage(slice, true, 1);
}
case Objects.AggregateFunction_Total2:
{
return ComputeTimeAverage(slice, true, 2);
}
}
}
return base.ComputeValue(slice);
}
/// <summary>
/// Computes the value for the timeslice.
/// </summary>
protected override DataValue ComputeValue(TimeSlice slice)
{
uint? id = AggregateId.Identifier as uint?;
if (id != null)
{
switch (id.Value)
{
case Objects.AggregateFunction_Count:
{
return ComputeCount(slice);
}
case Objects.AggregateFunction_AnnotationCount:
{
return ComputeAnnotationCount(slice);
}
case Objects.AggregateFunction_DurationInStateZero:
{
return ComputeDurationInState(slice, false);
}
case Objects.AggregateFunction_DurationInStateNonZero:
{
return ComputeDurationInState(slice, true);
}
case Objects.AggregateFunction_NumberOfTransitions:
{
return ComputeNumberOfTransitions(slice);
}
}
}
return base.ComputeValue(slice);
}
public override DataValue Compute(IAggregationContext context, TimeSlice bucket, AggregateState state)
{
int numGood = 0;
int numBad = 0;
foreach (DataValue v in bucket.Values)
{
if (state.RawValueIsGood(v))
{
numGood += 1;
}
else
{
numBad += 1;
}
}
StatusCode code = StatusCodes.Good;
DataValue retval = new DataValue { SourceTimestamp = bucket.From };
retval.Value = numGood;
code = ComputeStatus(context, numGood, numBad, bucket).Code;
code.AggregateBits = AggregateBits.Calculated;
if (bucket.Incomplete) code.AggregateBits |= AggregateBits.Partial;
retval.StatusCode = code;
return retval;
}
/// <summary>
/// Computes the value for the timeslice.
/// </summary>
protected override DataValue ComputeValue(TimeSlice slice)
{
uint?id = AggregateId.Identifier as uint?;
if (id != null)
{
switch (id.Value)
{
case Objects.AggregateFunction_Minimum:
{
return(ComputeMinMax(slice, 1, false));
}
case Objects.AggregateFunction_MinimumActualTime:
{
return(ComputeMinMax(slice, 1, true));
}
case Objects.AggregateFunction_Maximum:
{
return(ComputeMinMax(slice, 2, false));
}
case Objects.AggregateFunction_MaximumActualTime:
{
return(ComputeMinMax(slice, 2, true));
}
case Objects.AggregateFunction_Range:
{
return(ComputeMinMax(slice, 3, false));
}
case Objects.AggregateFunction_Minimum2:
{
return(ComputeMinMax2(slice, 1, false));
}
case Objects.AggregateFunction_MinimumActualTime2:
{
return(ComputeMinMax2(slice, 1, true));
}
case Objects.AggregateFunction_Maximum2:
{
return(ComputeMinMax2(slice, 2, false));
}
case Objects.AggregateFunction_MaximumActualTime2:
{
return(ComputeMinMax2(slice, 2, true));
}
case Objects.AggregateFunction_Range2:
{
return(ComputeMinMax2(slice, 3, false));
}
}
}
return(base.ComputeValue(slice));
}
public override void UpdateBoundingValues(TimeSlice bucket, AggregateState state)
{
}
/// <summary>
/// Calculates the Count aggregate for the timeslice.
/// </summary>
protected DataValue ComputeNumberOfTransitions(TimeSlice slice)
{
// get the values in the slice.
List<DataValue> values = GetValues(slice);
// check for empty slice.
if (values == null)
{
return GetNoDataValue(slice);
}
// determine whether a transition occurs at the StartTime
double lastValue = Double.NaN;
if (slice.EarlyBound != null)
{
if (StatusCode.IsGood(slice.EarlyBound.Value.StatusCode))
{
try
{
lastValue = CastToDouble(slice.EarlyBound.Value);
}
catch (Exception)
{
lastValue = Double.NaN;
}
}
}
// count the transitions.
int count = 0;
for (int ii = 0; ii < values.Count; ii++)
{
if (!IsGood(values[ii]))
{
continue;
}
double nextValue = 0;
try
{
nextValue = CastToDouble(values[ii]);
}
catch (Exception)
{
continue;
}
if (!Double.IsNaN(lastValue))
{
if (lastValue != nextValue)
{
count++;
}
}
lastValue = nextValue;
}
// set the timestamp and status.
DataValue value = new DataValue();
value.WrappedValue = new Variant(count, TypeInfo.Scalars.Int32);
value.SourceTimestamp = GetTimestamp(slice);
value.ServerTimestamp = GetTimestamp(slice);
value.StatusCode = value.StatusCode.SetAggregateBits(AggregateBits.Calculated);
value.StatusCode = GetValueBasedStatusCode(slice, values, value.StatusCode);
// return result.
return value;
}
/// <summary>
/// Calculates the Delta2 aggregate for the timeslice.
/// </summary>
protected DataValue ComputeDelta2(TimeSlice slice)
{
// get the values in the slice.
List <DataValue> values = GetValuesWithSimpleBounds(slice);
// check for empty slice.
if (values == null || values.Count == 0)
{
return(GetNoDataValue(slice));
}
DataValue start = values[0];
DataValue end = values[values.Count - 1];
// check for bad bounds.
if (StatusCode.IsBad(start.StatusCode) || StatusCode.IsBad(end.StatusCode))
{
return(GetNoDataValue(slice));
}
// convert to doubles.
double startValue = 0;
TypeInfo originalType = null;
try {
startValue = CastToDouble(start);
originalType = start.WrappedValue.TypeInfo;
} catch (Exception) {
startValue = Double.NaN;
}
double endValue = 0;
try {
endValue = CastToDouble(end);
} catch (Exception) {
endValue = Double.NaN;
}
// check for bad bounds.
if (Double.IsNaN(startValue) || Double.IsNaN(endValue))
{
return(GetNoDataValue(slice));
}
DataValue value = new DataValue();
value.SourceTimestamp = GetTimestamp(slice);
value.ServerTimestamp = GetTimestamp(slice);
if (StatusCode.IsNotGood(start.StatusCode) || StatusCode.IsNotGood(end.StatusCode))
{
value.StatusCode = StatusCodes.UncertainDataSubNormal;
}
value.StatusCode = value.StatusCode.SetAggregateBits(AggregateBits.Calculated);
// calculate delta.
double delta = endValue - startValue;
if (originalType != null && originalType.BuiltInType != BuiltInType.Double)
{
object delta2 = TypeInfo.Cast(delta, TypeInfo.Scalars.Double, originalType.BuiltInType);
value.WrappedValue = new Variant(delta2, originalType);
}
else
{
value.WrappedValue = new Variant(delta, TypeInfo.Scalars.Double);
}
// return result.
return(value);
}
public void UpdateProcessedData(DataValue rawValue, AggregateState state)
{
// step 1: compute new TimeSlice instances to enqueue, until we reach the one the
// rawValue belongs in or we've reached the one that goes to the EndTime. Ensure
// that the raw value is added to the last one created.
TimeSlice tmpTS = null;
if (m_pending == null)
{
m_pending = new Queue <TimeSlice>();
}
if (m_latest == null)
{
tmpTS = TimeSlice.CreateInitial(StartTime, EndTime, ProcessingInterval);
if (tmpTS != null)
{
m_pending.Enqueue(tmpTS);
m_latest = tmpTS;
}
}
else
{
tmpTS = m_latest;
}
DateTime latestTime = (StartTime > EndTime) ? StartTime : EndTime;
while ((tmpTS != null) && (state.HasTerminated || !tmpTS.AcceptValue(rawValue)))
{
tmpTS = TimeSlice.CreateNext(latestTime, ProcessingInterval, tmpTS);
if (tmpTS != null)
{
m_pending.Enqueue(tmpTS);
m_latest = tmpTS;
}
}
// step 2: apply the aggregator to the head of the queue to see if we can convert
// it into a processed point. If so, dequeue it and add the processed value to the
// m_released list. Keep doing it until one of the TimeSlices returns null or we
// run out of enqueued TimeSlices (should only happen on termination).
if (m_released == null)
{
m_released = new List <DataValue>();
}
foreach (TimeSlice b in m_pending)
{
UpdateBoundingValues(b, state);
}
bool active = true;
while ((m_pending.Count > 0) && active)
{
TimeSlice top = m_pending.Peek();
DataValue computed = null;
if (!WaitForMoreData(top, state))
{
computed = Compute(this, top, state);
}
if (computed != null)
{
m_released.Add(computed);
m_pending.Dequeue();
}
else
{
active = false;
}
}
}
/// <summary>
/// Calculates the AnnotationCount aggregate for the timeslice.
/// </summary>
protected DataValue ComputeAnnotationCount(TimeSlice slice)
{
// get the values in the slice.
List<DataValue> values = GetValues(slice);
// check for empty slice.
if (values == null)
{
return GetNoDataValue(slice);
}
// count the values.
int count = 0;
for (int ii = 0; ii < values.Count; ii++)
{
count++;
}
// set the timestamp and status.
DataValue value = new DataValue();
value.WrappedValue = new Variant(count, TypeInfo.Scalars.Int32);
value.SourceTimestamp = GetTimestamp(slice);
value.ServerTimestamp = GetTimestamp(slice);
value.StatusCode = value.StatusCode.SetAggregateBits(AggregateBits.Calculated);
// return result.
return value;
}
/// <summary>
/// Calculates the StdDev, Variance, StdDev2 and Variance2 aggregates for the timeslice.
/// </summary>
protected DataValue ComputeStdDev(TimeSlice slice, bool includeBounds, int valueType)
{
// get the values in the slice.
List <DataValue> values = null;
if (includeBounds)
{
values = GetValuesWithSimpleBounds(slice);
}
else
{
values = GetValues(slice);
}
// check for empty slice.
if (values == null || values.Count == 0)
{
return(GetNoDataValue(slice));
}
// get the regions.
List <SubRegion> regions = GetRegionsInValueSet(values, false, true);
List <double> xData = new List <double>();
double average = 0;
bool nonGoodDataExists = false;
for (int ii = 0; ii < regions.Count; ii++)
{
if (StatusCode.IsGood(regions[ii].StatusCode))
{
xData.Add(regions[ii].StartValue);
average += regions[ii].StartValue;
}
else
{
nonGoodDataExists = true;
}
}
// check if no good data.
if (xData.Count == 0)
{
return(GetNoDataValue(slice));
}
average /= xData.Count;
// calculate variance.
double variance = 0;
for (int ii = 0; ii < xData.Count; ii++)
{
double error = xData[ii] - average;
variance += error * error;
}
// use the sample variance if bounds are included.
if (includeBounds)
{
variance /= (xData.Count + 1);
}
// use the population variance if bounds are not included.
else
{
variance /= xData.Count;
}
// select the result.
double result = 0;
switch (valueType)
{
case 1: { result = Math.Sqrt(variance); break; }
case 2: { result = variance; break; }
}
// set the timestamp and status.
DataValue value = new DataValue();
value.WrappedValue = new Variant(result, TypeInfo.Scalars.Double);
value.SourceTimestamp = GetTimestamp(slice);
value.ServerTimestamp = GetTimestamp(slice);
if (nonGoodDataExists)
{
value.StatusCode = StatusCodes.UncertainDataSubNormal;
}
value.StatusCode = value.StatusCode.SetAggregateBits(AggregateBits.Calculated);
// return result.
return(value);
}
public abstract DataValue Compute(IAggregationContext context, TimeSlice bucket, AggregateState state);
/// <summary>
/// Calculates the StdDev, Variance, StdDev2 and Variance2 aggregates for the timeslice.
/// </summary>
protected DataValue ComputeTimeAverage(TimeSlice slice, bool useSimpleBounds, int valueType)
{
// get the values in the slice.
List<DataValue> values = null;
if (useSimpleBounds)
{
values = GetValuesWithSimpleBounds(slice);
}
else
{
values = GetValuesWithInterpolatedBounds(slice);
}
// check for empty slice.
if (values == null || values.Count == 0)
{
return GetNoDataValue(slice);
}
// get the regions.
List<SubRegion> regions = GetRegionsInValueSet(values, !useSimpleBounds, Stepped);
double total = 0;
double totalDuration = 0;
bool nonGoodRegionsExists = false;
for (int ii = 0; ii < regions.Count; ii++)
{
double duration = regions[ii].Duration/1000.0;
if (StatusCode.IsNotBad(regions[ii].StatusCode))
{
total += (regions[ii].StartValue + regions[ii].EndValue) * duration / 2;
totalDuration += duration;
}
if (StatusCode.IsNotGood(regions[ii].StatusCode))
{
nonGoodRegionsExists = true;
}
}
// check if no good data.
if (totalDuration == 0)
{
return GetNoDataValue(slice);
}
// select the result.
double result = 0;
switch (valueType)
{
case 1: { result = total/totalDuration; break; }
case 2: { result = total; break; }
}
// set the timestamp and status.
DataValue value = new DataValue();
value.WrappedValue = new Variant(result, TypeInfo.Scalars.Double);
value.SourceTimestamp = GetTimestamp(slice);
value.ServerTimestamp = GetTimestamp(slice);
if (useSimpleBounds)
{
value.StatusCode = GetTimeBasedStatusCode(regions, value.StatusCode);
}
else
{
value.StatusCode = StatusCodes.Good;
if (nonGoodRegionsExists)
{
value.StatusCode = StatusCodes.UncertainDataSubNormal;
}
}
value.StatusCode = value.StatusCode.SetAggregateBits(AggregateBits.Calculated);
// return result.
return value;
}
protected override StatusCode ComputeStatus(IAggregationContext context, int numGood, int numBad, TimeSlice bucket)
{
StatusCode code = base.ComputeStatus(context, numGood, numBad, bucket);
if (bucket.EarlyBound.Value == null || StatusCode.IsNotGood(bucket.EarlyBound.Value.StatusCode))
code = StatusCodes.Uncertain;
return code;
}
protected override StatusCode ComputeStatus(IAggregationContext context, int numGood, int numBad, TimeSlice bucket)
{
return(numBad + numGood == 0 ? StatusCodes.BadNoData : base.ComputeStatus(context, numGood, numBad, bucket));
}
/// <summary>
/// Calculates the Delta aggregate for the timeslice.
/// </summary>
protected DataValue ComputeDelta(TimeSlice slice)
{
// get the values in the slice.
List <DataValue> values = GetValues(slice);
// check for empty slice.
if (values == null || values.Count == 0)
{
return(GetNoDataValue(slice));
}
// find start value.
DataValue start = null;
double startValue = 0;
TypeInfo originalType = null;
bool badDataSkipped = false;
for (int ii = 0; ii < values.Count; ii++)
{
start = values[ii];
if (StatusCode.IsGood(start.StatusCode))
{
try {
startValue = CastToDouble(start);
originalType = start.WrappedValue.TypeInfo;
break;
} catch (Exception) {
startValue = Double.NaN;
}
}
start = null;
badDataSkipped = true;
}
// find end value.
DataValue end = null;
double endValue = 0;
for (int ii = values.Count - 1; ii >= 0; ii--)
{
end = values[ii];
if (StatusCode.IsGood(end.StatusCode))
{
try {
endValue = CastToDouble(end);
break;
} catch (Exception) {
endValue = Double.NaN;
}
break;
}
end = null;
badDataSkipped = true;
}
// check if no good data.
if (Double.IsNaN(startValue) || Double.IsNaN(endValue))
{
return(GetNoDataValue(slice));
}
DataValue value = new DataValue();
value.SourceTimestamp = GetTimestamp(slice);
value.ServerTimestamp = GetTimestamp(slice);
// set status code.
if (badDataSkipped)
{
value.StatusCode = StatusCodes.UncertainDataSubNormal;
}
value.StatusCode = value.StatusCode.SetAggregateBits(AggregateBits.Calculated);
// calculate delta.
double delta = endValue - startValue;
if (originalType != null && originalType.BuiltInType != BuiltInType.Double)
{
object delta2 = TypeInfo.Cast(delta, TypeInfo.Scalars.Double, originalType.BuiltInType);
value.WrappedValue = new Variant(delta2, originalType);
}
else
{
value.WrappedValue = new Variant(delta, TypeInfo.Scalars.Double);
}
// return result.
return(value);
}
protected override StatusCode ComputeStatus(IAggregationContext context, int numGood, int numBad, TimeSlice bucket)
{
StatusCode code = base.ComputeStatus(context, numGood, numBad, bucket);
if (code.CodeBits == StatusCodes.GoodNoData) // can be removed if GoodNoData is used.
{
code = StatusCodes.Good;
}
return(code);
}
public abstract void UpdateBoundingValues(TimeSlice bucket, AggregateState state);
/// <summary>
/// Calculates the Count aggregate for the timeslice.
/// </summary>
protected DataValue ComputeNumberOfTransitions(TimeSlice slice)
{
// get the values in the slice.
List <DataValue> values = GetValues(slice);
// check for empty slice.
if (values == null)
{
return(GetNoDataValue(slice));
}
// determine whether a transition occurs at the StartTime
double lastValue = Double.NaN;
if (slice.EarlyBound != null)
{
if (StatusCode.IsGood(slice.EarlyBound.Value.StatusCode))
{
try
{
lastValue = CastToDouble(slice.EarlyBound.Value);
}
catch (Exception)
{
lastValue = Double.NaN;
}
}
}
// count the transitions.
int count = 0;
for (int ii = 0; ii < values.Count; ii++)
{
if (!IsGood(values[ii]))
{
continue;
}
double nextValue = 0;
try
{
nextValue = CastToDouble(values[ii]);
}
catch (Exception)
{
continue;
}
if (!Double.IsNaN(lastValue))
{
if (lastValue != nextValue)
{
count++;
}
}
lastValue = nextValue;
}
// set the timestamp and status.
DataValue value = new DataValue();
value.WrappedValue = new Variant(count, TypeInfo.Scalars.Int32);
value.SourceTimestamp = GetTimestamp(slice);
value.ServerTimestamp = GetTimestamp(slice);
value.StatusCode = value.StatusCode.SetAggregateBits(AggregateBits.Calculated);
value.StatusCode = GetValueBasedStatusCode(slice, values, value.StatusCode);
// return result.
return(value);
}
public abstract bool WaitForMoreData(TimeSlice bucket, AggregateState state);
/// <summary>
/// Calculates the DurationGood and DurationBad aggregates for the timeslice.
/// </summary>
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);
}
/// <summary>
/// Computes the status code for the processing interval using the percent good/bad
/// information in the context.
/// </summary>
/// <param name="context"></param>
/// <param name="numGood"></param>
/// <param name="numBad"></param>
/// <returns></returns>
protected virtual StatusCode ComputeStatus(IAggregationContext context, int numGood, int numBad, TimeSlice bucket)
{
int total = numGood + numBad;
if (total > 0)
{
double pbad = (numBad * 100) / total;
if (pbad > context.PercentDataBad)
{
return(StatusCodes.Bad);
}
double pgood = (numGood * 100) / total;
if (pgood >= context.PercentDataGood)
{
return(StatusCodes.Good);
}
return(StatusCodes.Uncertain);
// return StatusCodes.UncertainDataSubNormal;
}
else
{
return(StatusCodes.GoodNoData);
}
}
public override void UpdateBoundingValues(TimeSlice bucket, AggregateState state)
{
BoundingValue EarlyBound = bucket.EarlyBound;
BoundingValue LateBound = bucket.LateBound;
if (bucket.ExactMatch(state.LatestTimestamp))
{
EarlyBound.RawPoint = state.LatePoint == null ? state.EarlyPoint : state.LatePoint;
EarlyBound.DerivationType = BoundingValueType.QualityRaw;
}
else
{
if (EarlyBound.DerivationType != BoundingValueType.QualityRaw)
{
if (EarlyBound.EarlyPoint == null)
{
if ((state.EarlyPoint != null) && (state.EarlyPoint.SourceTimestamp < bucket.From))
{
EarlyBound.EarlyPoint = state.EarlyPoint;
}
}
if (EarlyBound.LatePoint == null)
{
if ((state.LatePoint != null) && (state.LatePoint.SourceTimestamp >= bucket.From))
{
EarlyBound.CurrentBadPoints = new List <DataValue>();
foreach (DataValue dv in state.CurrentBadPoints)
{
if (dv.SourceTimestamp < EarlyBound.Timestamp)
{
EarlyBound.CurrentBadPoints.Add(dv);
}
}
EarlyBound.DerivationType = BoundingValueType.QualityInterpolation;
}
}
}
if (state.HasTerminated && (state.LatePoint == null))
{
EarlyBound.CurrentBadPoints = new List <DataValue>();
foreach (DataValue dv in state.CurrentBadPoints)
{
if (dv.SourceTimestamp < EarlyBound.Timestamp)
{
EarlyBound.CurrentBadPoints.Add(dv);
}
}
EarlyBound.DerivationType = BoundingValueType.QualityExtrapolation;
}
}
if (bucket.EndMatch(state.LatestTimestamp))
{
LateBound.RawPoint = state.LatePoint == null ? state.EarlyPoint : state.LatePoint;
LateBound.DerivationType = BoundingValueType.QualityRaw;
}
else
{
if (LateBound.DerivationType != BoundingValueType.QualityRaw)
{
if ((state.EarlyPoint != null) && (state.EarlyPoint.SourceTimestamp < bucket.To))
{
LateBound.EarlyPoint = state.EarlyPoint;
}
if (LateBound.LatePoint == null)
{
if ((state.LatePoint != null) && (state.LatePoint.SourceTimestamp >= bucket.To))
{
LateBound.CurrentBadPoints = new List <DataValue>();
foreach (DataValue dv in state.CurrentBadPoints)
{
if (dv.SourceTimestamp < LateBound.Timestamp)
{
LateBound.CurrentBadPoints.Add(dv);
}
}
LateBound.DerivationType = BoundingValueType.QualityInterpolation;
}
}
}
if (state.HasTerminated && (state.LatePoint == null))
{
LateBound.CurrentBadPoints = new List <DataValue>();
foreach (DataValue dv in state.CurrentBadPoints)
{
if (dv.SourceTimestamp < LateBound.Timestamp)
{
LateBound.CurrentBadPoints.Add(dv);
}
}
LateBound.DerivationType = BoundingValueType.QualityExtrapolation;
}
}
}
public override DataValue Compute(IAggregationContext context, TimeSlice bucket, AggregateState state)
{
int numGood = 0;
int numBad = 0;
int nTransitions = 0;
long stateCode = -1;
IEnumerator<DataValue> enumerator = bucket.Values.GetEnumerator();
bool bucketValueNotEmpty = enumerator.MoveNext();
if (bucketValueNotEmpty && enumerator.Current != null)
{
if (bucket.EarlyBound != null)
{
if (enumerator.Current.SourceTimestamp == bucket.EarlyBound.Timestamp && bucket.EarlyBound.PriorPoint != null)
{
stateCode = Convert.ToInt32(Convert.ToBoolean(bucket.EarlyBound.PriorPoint.Value));
}
else if (bucket.EarlyBound.Value != null)
{
stateCode = Convert.ToInt32(Convert.ToBoolean(bucket.EarlyBound.Value.Value));
}
}
}
// viz. UA MultiStateNodeState & TwoStateNodeState,
// assume DataValue.Value is either an EnumValueType or a bool
if (bucketValueNotEmpty)
{
do
{
DataValue dv = enumerator.Current;
if (state.RawValueIsGood(dv))
{
EnumValueType ev = dv.Value as EnumValueType;
if (ev == null)
{
bool b;
if (bool.TryParse(dv.Value.ToString(), out b))
{
if (stateCode < 0)
stateCode = b ? 1 : 0;
else if (b.CompareTo(Convert.ToBoolean(stateCode)) != 0)
{
nTransitions++;
stateCode = b ? 1 : 0;
}
}
else
continue;
}
else
{
long s = ev.Value;
if (stateCode < 0)
stateCode = s;
else if (!s.Equals(stateCode))
{
nTransitions++;
stateCode = s;
}
}
numGood++;
}
else
{
numBad++;
}
} while (enumerator.MoveNext());
}
StatusCode code = ComputeStatus(context, numGood, numBad, bucket).Code;
DataValue retval = new DataValue { SourceTimestamp = bucket.From, Value = nTransitions };
code.AggregateBits = AggregateBits.Calculated;
if (bucket.Incomplete) code.AggregateBits |= AggregateBits.Partial;
retval.StatusCode = code;
return retval;
}
/// <summary>
/// Calculate the Start and End aggregates for the timeslice.
/// </summary>
protected DataValue ComputeStartEnd(TimeSlice slice, bool returnEnd)
{
// get the values in the slice.
List<DataValue> values = GetValues(slice);
// check for empty slice.
if (values == null || values.Count == 0)
{
return GetNoDataValue(slice);
}
// return start value.
if (!returnEnd)
{
return values[0];
}
// return end value.
else
{
return values[values.Count - 1];
}
}
/// <summary>
/// Calculates the DurationInStateZero and DurationInStateNonZero aggregates for the timeslice.
/// </summary>
protected DataValue ComputeDurationInState(TimeSlice slice, bool isNonZero)
{
// get the values in the slice.
List<DataValue> values = GetValuesWithSimpleBounds(slice);
// check for empty slice.
if (values == null)
{
return GetNoDataValue(slice);
}
// get the regions.
List<SubRegion> regions = GetRegionsInValueSet(values, false, true);
double duration = 0;
for (int ii = 0; ii < regions.Count; ii++)
{
if (StatusCode.IsNotGood(regions[ii].StatusCode))
{
continue;
}
if (isNonZero)
{
if (regions[ii].StartValue != 0)
{
duration += regions[ii].Duration;
}
}
else
{
if (regions[ii].StartValue == 0)
{
duration += regions[ii].Duration;
}
}
}
// set the timestamp and status.
DataValue value = new DataValue();
value.WrappedValue = new Variant(duration, TypeInfo.Scalars.Double);
value.SourceTimestamp = GetTimestamp(slice);
value.ServerTimestamp = GetTimestamp(slice);
value.StatusCode = value.StatusCode.SetAggregateBits(AggregateBits.Calculated);
value.StatusCode = GetTimeBasedStatusCode(regions, value.StatusCode);
// return result.
return value;
}
/// <summary>
/// Calculate the Start2 and End2 aggregates for the timeslice.
/// </summary>
protected DataValue ComputeStartEnd2(TimeSlice slice, bool returnEnd)
{
// get the values in the slice.
List<DataValue> values = GetValuesWithSimpleBounds(slice);
// check for empty slice.
if (values == null || values.Count == 0)
{
return GetNoDataValue(slice);
}
DataValue value = null;
// return start bound.
if ((!returnEnd && !TimeFlowsBackward) || (returnEnd && TimeFlowsBackward))
{
value = values[0];
}
// return end bound.
else
{
value = values[values.Count - 1];
}
if (returnEnd)
{
value.SourceTimestamp = GetTimestamp(slice);
value.ServerTimestamp = GetTimestamp(slice);
if (StatusCode.IsNotBad(value.StatusCode))
{
value.StatusCode = value.StatusCode.SetAggregateBits(AggregateBits.Calculated);
}
}
return value;
}
public override void UpdateBoundingValues(TimeSlice bucket, AggregateState state)
{
BoundingValue EarlyBound = bucket.EarlyBound;
BoundingValue LateBound = bucket.LateBound;
if (bucket.ExactMatch(state.LatestTimestamp) && StatusCode.IsGood(state.LatestStatus))
{
EarlyBound.RawPoint = state.LatePoint == null ? state.EarlyPoint : state.LatePoint;
EarlyBound.DerivationType = BoundingValueType.Raw;
}
else
{
if (EarlyBound.DerivationType != BoundingValueType.Raw)
{
if (EarlyBound.EarlyPoint == null)
{
if ((state.EarlyPoint != null) && (state.EarlyPoint.SourceTimestamp < bucket.From))
{
EarlyBound.EarlyPoint = state.EarlyPoint;
}
}
if (EarlyBound.LatePoint == null)
{
if ((state.LatePoint != null) && (state.LatePoint.SourceTimestamp >= bucket.From))
{
EarlyBound.LatePoint = state.LatePoint;
if (SteppedVariable)
{
EarlyBound.CurrentBadPoints = new List <DataValue>();
foreach (DataValue dv in state.CurrentBadPoints)
{
if (dv.SourceTimestamp < EarlyBound.Timestamp)
{
EarlyBound.CurrentBadPoints.Add(dv);
}
}
}
else
{
EarlyBound.CurrentBadPoints = state.CurrentBadPoints;
}
EarlyBound.DerivationType = SteppedVariable ? BoundingValueType.SteppedInterpolation : BoundingValueType.SlopedInterpolation;
}
}
}
if (state.HasTerminated && (state.LatePoint == null))
{
if (SteppedVariable)
{
EarlyBound.CurrentBadPoints = new List <DataValue>();
foreach (DataValue dv in state.CurrentBadPoints)
{
if (dv.SourceTimestamp < EarlyBound.Timestamp)
{
EarlyBound.CurrentBadPoints.Add(dv);
}
}
}
else
{
EarlyBound.CurrentBadPoints = state.CurrentBadPoints;
}
}
}
if (bucket.EndMatch(state.LatestTimestamp) && StatusCode.IsGood(state.LatestStatus))
{
LateBound.RawPoint = state.LatePoint == null ? state.EarlyPoint : state.LatePoint;
LateBound.DerivationType = BoundingValueType.Raw;
}
else
{
if (LateBound.DerivationType != BoundingValueType.Raw)
{
if ((state.EarlyPoint != null) && (state.EarlyPoint.SourceTimestamp < bucket.To))
{
LateBound.EarlyPoint = state.EarlyPoint;
}
if (LateBound.LatePoint == null)
{
if ((state.LatePoint != null) && (state.LatePoint.SourceTimestamp >= bucket.To))
{
LateBound.LatePoint = state.LatePoint;
if (SteppedVariable)
{
LateBound.CurrentBadPoints = new List <DataValue>();
foreach (DataValue dv in state.CurrentBadPoints)
{
if (dv.SourceTimestamp < LateBound.Timestamp)
{
LateBound.CurrentBadPoints.Add(dv);
}
}
}
else
{
LateBound.CurrentBadPoints = state.CurrentBadPoints;
}
LateBound.DerivationType = SteppedVariable ? BoundingValueType.SteppedInterpolation : BoundingValueType.SlopedInterpolation;
}
}
}
if (state.HasTerminated && (state.LatePoint == null))
{
if (SteppedVariable)
{
LateBound.CurrentBadPoints = new List <DataValue>();
foreach (DataValue dv in state.CurrentBadPoints)
{
if (dv.SourceTimestamp < LateBound.Timestamp)
{
LateBound.CurrentBadPoints.Add(dv);
}
}
}
else
{
LateBound.CurrentBadPoints = state.CurrentBadPoints;
}
}
UpdatePriorPoint(LateBound, state);
}
}
/// <summary>
/// Calculate the Minimum, Maximum, MinimumActualTime and MaximumActualTime aggregates for the timeslice.
/// </summary>
protected DataValue ComputeMinMax(TimeSlice slice, int valueType, bool returnActualTime)
{
// get the values in the slice.
List <DataValue> values = GetValues(slice);
// check for empty slice.
if (values == null || values.Count == 0)
{
return(GetNoDataValue(slice));
}
double minimumGoodValue = Double.MaxValue;
double minimumUncertainValue = Double.MaxValue;
double maximumGoodValue = Double.MinValue;
double maximumUncertainValue = Double.MinValue;
DateTime minimumGoodTimestamp = DateTime.MinValue;
DateTime maximumGoodTimestamp = DateTime.MinValue;
TypeInfo minimumOriginalType = null;
TypeInfo maximumOriginalType = null;
bool badValuesExist = false;
bool duplicatesMinimumsExist = false;
bool duplicatesMaximumsExist = false;
bool goodValueExists = false;
for (int ii = 0; ii < values.Count; ii++)
{
double currentValue = 0;
DateTime currentTime = values[ii].SourceTimestamp;
StatusCode currentStatus = values[ii].StatusCode;
// ignore bad values.
if (!IsGood(values[ii]))
{
badValuesExist = true;
continue;
}
// convert to double.
try
{
currentValue = CastToDouble(values[ii]);
}
catch (Exception)
{
badValuesExist = true;
continue;
}
// check for uncertain.
if (StatusCode.IsUncertain(currentStatus))
{
if (minimumUncertainValue > currentValue)
{
minimumUncertainValue = currentValue;
}
if (maximumUncertainValue < currentValue)
{
maximumUncertainValue = currentValue;
}
continue;
}
// check for new minimum.
if (minimumGoodValue > currentValue)
{
minimumGoodValue = currentValue;
minimumGoodTimestamp = currentTime;
minimumOriginalType = values[ii].WrappedValue.TypeInfo;
duplicatesMinimumsExist = false;
goodValueExists = true;
}
// check for duplicate minimums.
else if (minimumGoodValue == currentValue)
{
duplicatesMinimumsExist = true;
}
// check for new maximum.
if (maximumGoodValue < currentValue)
{
maximumGoodValue = currentValue;
maximumGoodTimestamp = currentTime;
maximumOriginalType = values[ii].WrappedValue.TypeInfo;
duplicatesMaximumsExist = false;
goodValueExists = true;
}
// check for duplicate maximums.
else if (maximumGoodValue == currentValue)
{
duplicatesMaximumsExist = true;
}
}
// check if at least on good value exists.
if (!goodValueExists)
{
return(GetNoDataValue(slice));
}
// set the status code.
StatusCode statusCode = StatusCodes.Good;
// uncertain if any bad values exist.
if (badValuesExist)
{
statusCode = StatusCodes.UncertainDataSubNormal;
}
// determine the calculated value to return.
object processedValue = null;
TypeInfo processedType = null;
DateTime processedTimestamp = DateTime.MinValue;
bool uncertainValueExists = false;
bool duplicatesExist = false;
if (valueType == 1)
{
processedValue = minimumGoodValue;
processedTimestamp = minimumGoodTimestamp;
processedType = minimumOriginalType;
uncertainValueExists = minimumGoodValue > minimumUncertainValue;
duplicatesExist = duplicatesMinimumsExist;
}
else if (valueType == 2)
{
processedValue = maximumGoodValue;
processedTimestamp = maximumGoodTimestamp;
processedType = maximumOriginalType;
uncertainValueExists = maximumGoodValue < maximumUncertainValue;
duplicatesExist = duplicatesMaximumsExist;
}
else if (valueType == 3)
{
processedValue = Math.Abs(maximumGoodValue - minimumGoodValue);
processedType = TypeInfo.Scalars.Double;
uncertainValueExists = maximumGoodValue <maximumUncertainValue || minimumGoodValue> minimumUncertainValue;
}
// set calculated if not returning actual time and value is not at the start time.
if (!returnActualTime && processedTimestamp != slice.StartTime)
{
statusCode = statusCode.SetAggregateBits(AggregateBits.Calculated);
}
// set the multiple values flags.
if (duplicatesExist)
{
statusCode = statusCode.SetAggregateBits(statusCode.AggregateBits | AggregateBits.MultipleValues);
}
// convert back to original datatype.
if (processedType != null && processedType.BuiltInType != BuiltInType.Double)
{
processedValue = TypeInfo.Cast(processedValue, TypeInfo.Scalars.Double, processedType.BuiltInType);
}
else
{
processedType = TypeInfo.Scalars.Double;
}
// create processed value.
DataValue value = new DataValue();
value.WrappedValue = new Variant(processedValue, processedType);
value.StatusCode = statusCode;
if (returnActualTime)
{
value.SourceTimestamp = processedTimestamp;
value.ServerTimestamp = processedTimestamp;
}
else
{
value.SourceTimestamp = GetTimestamp(slice);
value.ServerTimestamp = GetTimestamp(slice);
}
return(value);
}
/// <summary>
/// Calculates the Delta aggregate for the timeslice.
/// </summary>
protected DataValue ComputeDelta(TimeSlice slice)
{
// get the values in the slice.
List<DataValue> values = GetValues(slice);
// check for empty slice.
if (values == null || values.Count == 0)
{
return GetNoDataValue(slice);
}
// find start value.
DataValue start = null;
double startValue = 0;
TypeInfo originalType = null;
bool badDataSkipped = false;
for (int ii = 0; ii < values.Count; ii++)
{
start = values[ii];
if (StatusCode.IsGood(start.StatusCode))
{
try
{
startValue = CastToDouble(start);
originalType = start.WrappedValue.TypeInfo;
break;
}
catch (Exception)
{
startValue = Double.NaN;
}
}
start = null;
badDataSkipped = true;
}
// find end value.
DataValue end = null;
double endValue = 0;
for (int ii = values.Count - 1; ii >= 0; ii--)
{
end = values[ii];
if (StatusCode.IsGood(end.StatusCode))
{
try
{
endValue = CastToDouble(end);
break;
}
catch (Exception)
{
endValue = Double.NaN;
}
break;
}
end = null;
badDataSkipped = true;
}
// check if no good data.
if (Double.IsNaN(startValue) || Double.IsNaN(endValue))
{
return GetNoDataValue(slice);
}
DataValue value = new DataValue();
value.SourceTimestamp = GetTimestamp(slice);
value.ServerTimestamp = GetTimestamp(slice);
// set status code.
if (badDataSkipped)
{
value.StatusCode = StatusCodes.UncertainDataSubNormal;
}
value.StatusCode = value.StatusCode.SetAggregateBits(AggregateBits.Calculated);
// calculate delta.
double delta = endValue - startValue;
if (originalType != null && originalType.BuiltInType != BuiltInType.Double)
{
object delta2 = TypeInfo.Cast(delta, TypeInfo.Scalars.Double, originalType.BuiltInType);
value.WrappedValue = new Variant(delta2, originalType);
}
else
{
value.WrappedValue = new Variant(delta, TypeInfo.Scalars.Double);
}
// return result.
return value;
}
protected override StatusCode ComputeStatus(IAggregationContext context, int numGood, int numBad, TimeSlice bucket)
{
StatusCode code = (bucket.EarlyBound.Value == null && numGood + numBad == 0) ? // no inital bound, do not extrapolate
StatusCodes.BadNoData : base.ComputeStatus(context, numGood, numBad, bucket);
return(code);
}
/// <summary>
/// Calculates the Delta2 aggregate for the timeslice.
/// </summary>
protected DataValue ComputeDelta2(TimeSlice slice)
{
// get the values in the slice.
List<DataValue> values = GetValuesWithSimpleBounds(slice);
// check for empty slice.
if (values == null || values.Count == 0)
{
return GetNoDataValue(slice);
}
DataValue start = values[0];
DataValue end = values[values.Count-1];
// check for bad bounds.
if (StatusCode.IsBad(start.StatusCode) || StatusCode.IsBad(end.StatusCode))
{
return GetNoDataValue(slice);
}
// convert to doubles.
double startValue = 0;
TypeInfo originalType = null;
try
{
startValue = CastToDouble(start);
originalType = start.WrappedValue.TypeInfo;
}
catch (Exception)
{
startValue = Double.NaN;
}
double endValue = 0;
try
{
endValue = CastToDouble(end);
}
catch (Exception)
{
endValue = Double.NaN;
}
// check for bad bounds.
if (Double.IsNaN(startValue) || Double.IsNaN(endValue))
{
return GetNoDataValue(slice);
}
DataValue value = new DataValue();
value.SourceTimestamp = GetTimestamp(slice);
value.ServerTimestamp = GetTimestamp(slice);
if (StatusCode.IsNotGood(start.StatusCode) || StatusCode.IsNotGood(end.StatusCode))
{
value.StatusCode = StatusCodes.UncertainDataSubNormal;
}
value.StatusCode = value.StatusCode.SetAggregateBits(AggregateBits.Calculated);
// calculate delta.
double delta = endValue - startValue;
if (originalType != null && originalType.BuiltInType != BuiltInType.Double)
{
object delta2 = TypeInfo.Cast(delta, TypeInfo.Scalars.Double, originalType.BuiltInType);
value.WrappedValue = new Variant(delta2, originalType);
}
else
{
value.WrappedValue = new Variant(delta, TypeInfo.Scalars.Double);
}
// return result.
return value;
}
/// <summary>
/// Calculate the Minimum2, Maximum2, MinimumActualTime2, MaximumActualTime2 and Range2 aggregates for the timeslice.
/// </summary>
protected DataValue ComputeMinMax2(TimeSlice slice, int valueType, bool returnActualTime)
{
// get the values in the slice.
List <DataValue> values = GetValuesWithSimpleBounds(slice);
// check for empty slice.
if (values == null || values.Count == 0)
{
return(GetNoDataValue(slice));
}
double minimumGoodValue = Double.MaxValue;
double maximumGoodValue = Double.MinValue;
DateTime minimumGoodTimestamp = DateTime.MinValue;
DateTime maximumGoodTimestamp = DateTime.MinValue;
StatusCode minimumGoodStatusCode = StatusCodes.Good;
StatusCode maximumGoodStatusCode = StatusCodes.Good;
TypeInfo minimumOriginalType = null;
TypeInfo maximumOriginalType = null;
bool duplicatesMinimumsExist = false;
bool duplicatesMaximumsExist = false;
bool goodValueExists = false;
for (int ii = 0; ii < values.Count; ii++)
{
double currentValue = 0;
DateTime currentTime = values[ii].SourceTimestamp;
StatusCode currentStatus = values[ii].StatusCode;
// ignore bad values (as determined by the TreatUncertainAsBad parameter).
if (!IsGood(values[ii]))
{
continue;
}
// convert to double.
try
{
currentValue = CastToDouble(values[ii]);
}
catch (Exception)
{
continue;
}
// skip endpoint if stepped.
if (currentTime == slice.EndTime)
{
if (Stepped)
{
break;
}
}
// check for new minimum.
if (minimumGoodValue > currentValue)
{
minimumGoodValue = currentValue;
minimumGoodTimestamp = currentTime;
minimumGoodStatusCode = currentStatus;
minimumOriginalType = values[ii].WrappedValue.TypeInfo;
duplicatesMinimumsExist = false;
goodValueExists = true;
}
// check for duplicate minimums.
else if (minimumGoodValue == currentValue)
{
duplicatesMinimumsExist = true;
}
// check for new maximum.
if (maximumGoodValue < currentValue)
{
maximumGoodValue = currentValue;
maximumGoodTimestamp = currentTime;
maximumGoodStatusCode = currentStatus;
maximumOriginalType = values[ii].WrappedValue.TypeInfo;
duplicatesMaximumsExist = false;
goodValueExists = true;
}
// check for duplicate maximums.
else if (maximumGoodValue == currentValue)
{
duplicatesMaximumsExist = true;
}
}
// check if at least on good value exists.
if (!goodValueExists)
{
return(GetNoDataValue(slice));
}
// determine the calculated value to return.
object processedValue = null;
TypeInfo processedType = null;
DateTime processedTimestamp = DateTime.MinValue;
StatusCode processedStatusCode = StatusCodes.Good;
bool duplicatesExist = false;
if (valueType == 1)
{
processedValue = minimumGoodValue;
processedTimestamp = minimumGoodTimestamp;
processedStatusCode = minimumGoodStatusCode;
processedType = minimumOriginalType;
duplicatesExist = duplicatesMinimumsExist;
}
else if (valueType == 2)
{
processedValue = maximumGoodValue;
processedTimestamp = maximumGoodTimestamp;
processedStatusCode = maximumGoodStatusCode;
processedType = maximumOriginalType;
duplicatesExist = duplicatesMaximumsExist;
}
else if (valueType == 3)
{
processedValue = Math.Abs(maximumGoodValue - minimumGoodValue);
processedType = TypeInfo.Scalars.Double;
}
// set the status code.
StatusCode statusCode = processedStatusCode;
// set calculated if not returning actual time and value is not at the start time.
if (!returnActualTime && processedTimestamp != slice.StartTime && (statusCode.AggregateBits & AggregateBits.Interpolated) == 0)
{
statusCode = statusCode.SetAggregateBits(statusCode.AggregateBits | AggregateBits.Calculated);
}
// set the multiple values flags.
if (duplicatesExist)
{
statusCode = statusCode.SetAggregateBits(statusCode.AggregateBits | AggregateBits.MultipleValues);
}
// convert back to original datatype.
if (processedType != null && processedType.BuiltInType != BuiltInType.Double)
{
processedValue = TypeInfo.Cast(processedValue, TypeInfo.Scalars.Double, processedType.BuiltInType);
}
else
{
processedType = TypeInfo.Scalars.Double;
}
// create processed value.
DataValue value = new DataValue();
value.WrappedValue = new Variant(processedValue, processedType);
value.StatusCode = GetTimeBasedStatusCode(slice, values, statusCode);
// zero value if status is bad.
if (StatusCode.IsBad(value.StatusCode))
{
value.WrappedValue = Variant.Null;
}
if (returnActualTime)
{
// calculate effective time if end bound is used.
if (TimeFlowsBackward)
{
if (processedTimestamp == slice.StartTime)
{
processedTimestamp = processedTimestamp.AddMilliseconds(+1);
value.StatusCode = value.StatusCode.SetAggregateBits(value.StatusCode.AggregateBits | AggregateBits.Interpolated);
}
}
else
{
if (processedTimestamp == slice.EndTime)
{
processedTimestamp = processedTimestamp.AddMilliseconds(-1);
value.StatusCode = value.StatusCode.SetAggregateBits(value.StatusCode.AggregateBits | AggregateBits.Interpolated);
}
}
value.SourceTimestamp = processedTimestamp;
value.ServerTimestamp = processedTimestamp;
}
else
{
value.SourceTimestamp = GetTimestamp(slice);
value.ServerTimestamp = GetTimestamp(slice);
}
return(value);
}
/// <summary>
/// Calculates the RegSlope, RegConst and RegStdDev aggregates for the timeslice.
/// </summary>
protected DataValue ComputeAverage(TimeSlice slice)
{
// get the values in the slice.
List<DataValue> values = GetValues(slice);
// check for empty slice.
if (values == null || values.Count == 0)
{
return GetNoDataValue(slice);
}
// calculate total and count.
int count = 0;
double total = 0;
for (int ii = 0; ii < values.Count; ii++)
{
if (StatusCode.IsGood(values[ii].StatusCode))
{
try
{
double sample = CastToDouble(values[ii]);
total += sample;
count++;
}
catch
{
// ignore conversion errors.
}
}
}
// check for empty slice.
if (count == 0)
{
return GetNoDataValue(slice);
}
// select the result.
double result = total/count;
// set the timestamp and status.
DataValue value = new DataValue();
value.WrappedValue = new Variant(result, TypeInfo.Scalars.Double);
value.SourceTimestamp = GetTimestamp(slice);
value.ServerTimestamp = GetTimestamp(slice);
value.StatusCode = value.StatusCode.SetAggregateBits(AggregateBits.Calculated);
value.StatusCode = GetValueBasedStatusCode(slice, values, value.StatusCode);
// return result.
return value;
}
/// <summary>
/// Calculates the StdDev, Variance, StdDev2 and Variance2 aggregates for the timeslice.
/// </summary>
protected DataValue ComputeTimeAverage(TimeSlice slice, bool useSimpleBounds, int valueType)
{
// get the values in the slice.
List <DataValue> values = null;
if (useSimpleBounds)
{
values = GetValuesWithSimpleBounds(slice);
}
else
{
values = GetValuesWithInterpolatedBounds(slice);
}
// check for empty slice.
if (values == null || values.Count == 0)
{
return(GetNoDataValue(slice));
}
// get the regions.
List <SubRegion> regions = GetRegionsInValueSet(values, !useSimpleBounds, Stepped);
double total = 0;
double totalDuration = 0;
bool nonGoodRegionsExists = false;
for (int ii = 0; ii < regions.Count; ii++)
{
double duration = regions[ii].Duration / 1000.0;
if (StatusCode.IsNotBad(regions[ii].StatusCode))
{
total += (regions[ii].StartValue + regions[ii].EndValue) * duration / 2;
totalDuration += duration;
}
if (StatusCode.IsNotGood(regions[ii].StatusCode))
{
nonGoodRegionsExists = true;
}
}
// check if no good data.
if (totalDuration == 0)
{
return(GetNoDataValue(slice));
}
// select the result.
double result = 0;
switch (valueType)
{
case 1: { result = total / totalDuration; break; }
case 2: { result = total; break; }
}
// set the timestamp and status.
DataValue value = new DataValue();
value.WrappedValue = new Variant(result, TypeInfo.Scalars.Double);
value.SourceTimestamp = GetTimestamp(slice);
value.ServerTimestamp = GetTimestamp(slice);
if (useSimpleBounds)
{
value.StatusCode = GetTimeBasedStatusCode(regions, value.StatusCode);
}
else
{
value.StatusCode = StatusCodes.Good;
if (nonGoodRegionsExists)
{
value.StatusCode = StatusCodes.UncertainDataSubNormal;
}
}
value.StatusCode = value.StatusCode.SetAggregateBits(AggregateBits.Calculated);
// return result.
return(value);
}
/// <summary>
/// Calculates the RegSlope, RegConst and RegStdDev aggregates for the timeslice.
/// </summary>
protected DataValue ComputeRegression(TimeSlice slice, int valueType)
{
// get the values in the slice.
List <DataValue> 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);
List <double> xData = new List <double>();
List <double> yData = new List <double>();
double duration = 0;
bool nonGoodDataExists = false;
for (int ii = 0; ii < regions.Count; ii++)
{
if (StatusCode.IsGood(regions[ii].StatusCode))
{
xData.Add(regions[ii].StartValue);
yData.Add(duration);
}
else
{
nonGoodDataExists = true;
}
// normalize to seconds.
duration += regions[ii].Duration / 1000.0;
}
// check if no good data.
if (xData.Count == 0)
{
return(GetNoDataValue(slice));
}
// compute the regression parameters.
double regSlope = 0;
double regConst = 0;
double regStdDev = 0;
if (xData.Count > 1)
{
double xAvg = 0;
double yAvg = 0;
double xxAgv = 0;
double xyAvg = 0;
for (int ii = 0; ii < xData.Count; ii++)
{
xAvg += xData[ii];
yAvg += yData[ii];
xxAgv += xData[ii] * xData[ii];
xyAvg += xData[ii] * yData[ii];
}
xAvg /= xData.Count;
yAvg /= xData.Count;
xxAgv /= xData.Count;
xyAvg /= xData.Count;
regSlope = (xyAvg - xAvg * yAvg) / (xxAgv - xAvg * xAvg);
regConst = yAvg - regSlope * xAvg;
List <double> errors = new List <double>();
double eAvg = 0;
for (int ii = 0; ii < xData.Count; ii++)
{
double error = yData[ii] - regConst - regSlope * xData[ii];
errors.Add(error);
eAvg += error;
}
eAvg /= errors.Count;
double variance = 0;
for (int ii = 0; ii < errors.Count; ii++)
{
double error = errors[ii] - eAvg;
variance += error * error;
}
variance /= errors.Count;
regStdDev = Math.Sqrt(variance);
}
// select the result.
double result = 0;
switch (valueType)
{
case 1: { result = regSlope; break; }
case 2: { result = regConst; break; }
case 3: { result = regStdDev; break; }
}
// set the timestamp and status.
DataValue value = new DataValue();
value.WrappedValue = new Variant(result, TypeInfo.Scalars.Double);
value.SourceTimestamp = GetTimestamp(slice);
value.ServerTimestamp = GetTimestamp(slice);
if (nonGoodDataExists)
{
value.StatusCode = StatusCodes.UncertainDataSubNormal;
}
value.StatusCode = value.StatusCode.SetAggregateBits(AggregateBits.Calculated);
// return result.
return(value);
}
public override void UpdateBoundingValues(TimeSlice bucket, AggregateState state)
{
base.UpdateBoundingValues(bucket, state);
UpdatePriorPoint(bucket.EarlyBound, state);
}