@Override
public Measure calculate(FormulaData data, FormulaContext context) {
double sum = 0.0;
double count = 0.0;
boolean hasValue = false;
for (FormulaData child : data.getChildren()) {
Measure measure = child.getMeasure(context.getTargetMetric());
Measure weightingMeasure = child.getMeasure(weightingMetric);
if (MeasureUtils.haveValues(measure, weightingMeasure)) {
sum += measure.getValue() * weightingMeasure.getValue();
count += weightingMeasure.getValue();
hasValue = true;
}
}
if (!hasValue && !zeroIfNoValues) {
return null;
}
double result = (Double.doubleToRawLongBits(count) == 0L) ? 0.0 : (sum / count);
return new Measure(context.getTargetMetric(), result);
}
