private void DefineAggregationAction(TInput inputrow, TOutput aggOutput)
{
foreach (var attrmap in AggTypeInfo.AggregateColumns)
{
decimal?inputVal = ConvertToDecimal(attrmap.PropInInput.GetValue(inputrow));
decimal?aggVal = ConvertToDecimal(attrmap.PropInOutput.GetValue(aggOutput));
decimal?res = null;
if (aggVal == null && attrmap.AggregationMethod == AggregationMethod.Count)
{
res = 1;
}
else if (aggVal == null)
{
res = inputVal;
}
else if (attrmap.AggregationMethod == AggregationMethod.Sum)
{
res = (inputVal ?? 0) + aggVal;
}
else if (attrmap.AggregationMethod == AggregationMethod.Max)
{
res = ((inputVal ?? 0) > aggVal) ? inputVal : aggVal;
}
else if (attrmap.AggregationMethod == AggregationMethod.Min)
{
res = (inputVal ?? 0) < aggVal ? inputVal : aggVal;
}
else if (attrmap.AggregationMethod == AggregationMethod.Count)
{
res = aggVal + 1;
}
object output = Convert.ChangeType(
res, TypeInfo.TryGetUnderlyingType(attrmap.PropInOutput));
attrmap.PropInOutput.SetValueOrThrow(aggOutput, output);
}
}
private void AddUnderlyingType(PropertyInfo propInfo)
{
Type t = TypeInfo.TryGetUnderlyingType(propInfo);
underlyingPropType.Add(propInfo, t);
}