public static TryCatch <AggregateValue> TryCreate(
AggregateOperator aggregateOperator,
CosmosElement continuationToken)
{
TryCatch <IAggregator> tryCreateAggregator;
switch (aggregateOperator)
{
case AggregateOperator.Average:
tryCreateAggregator = AverageAggregator.TryCreate(continuationToken);
break;
case AggregateOperator.Count:
tryCreateAggregator = CountAggregator.TryCreate(continuationToken);
break;
case AggregateOperator.Max:
tryCreateAggregator = MinMaxAggregator.TryCreateMaxAggregator(continuationToken);
break;
case AggregateOperator.Min:
tryCreateAggregator = MinMaxAggregator.TryCreateMinAggregator(continuationToken);
break;
case AggregateOperator.Sum:
tryCreateAggregator = SumAggregator.TryCreate(continuationToken);
break;
default:
throw new ArgumentException($"Unknown {nameof(AggregateOperator)}: {aggregateOperator}.");
}
return(tryCreateAggregator.Try <AggregateValue>((aggregator) => new AggregateAggregateValue(aggregator)));
}
public static TryCatch <IAggregator> TryCreateMaxAggregator(string continuationToken)
{
return(MinMaxAggregator.TryCreate(isMinAggregation: false, continuationToken: continuationToken));
}
public static TryCatch <IAggregator> TryCreateMinAggregator(CosmosElement continuationToken)
{
return(MinMaxAggregator.TryCreate(isMinAggregation: true, continuationToken: continuationToken));
}
