protected override IStream <AggregationResult <TIn, TKey, TAggrRes> > CreateOutputStream(PivotArgs <TIn, TAggrRes, TKey> args)
{
var aggregationProcessor = new AggregationProcessor <TIn, TIn, TAggrRes, Core.Aggregation.Aggregator <TIn> >(args.AggregationDescriptor);
return(CreateUnsortedStream(
args.InputStream.Observable.Aggregate(
aggregationProcessor.CreateAggregators,
args.GetKey,
aggregationProcessor.Aggregate, (i, k, a) => new AggregationResult <TIn, TKey, TAggrRes>
{
Aggregation = aggregationProcessor.CreateInstance(a),
FirstValue = i,
Key = k
})));
}
public PivotStreamNode(string name, PivotArgs <TIn, TAggrRes, TKey> args) : base(name, args)
{
}