protected override ISortedStream <Correlated <AggregationResult <TIn, TKey, TAggrRes> >, TKey> CreateOutputStream(PivotSortedCorrelatedArgs <TIn, TAggrRes, TKey> args)
{
var aggregationProcessor = new AggregationProcessor <Correlated <TIn>, TIn, TAggrRes, CorrelatedAggregator <TIn> >(args.AggregationDescriptor);
return(CreateSortedStream(
args.InputStream.Observable.AggregateGrouped(
aggregationProcessor.CreateAggregators,
args.InputStream.SortDefinition.GetKey,
aggregationProcessor.Aggregate,
(i, k, a) =>
{
HashSet <Guid> correlationKeys = new HashSet <Guid>();
a.Values.Select(i => i.CorrelationKeys).ToList().ForEach(correlationKeys.UnionWith);
return new Correlated <AggregationResult <TIn, TKey, TAggrRes> >
{
Row = new AggregationResult <TIn, TKey, TAggrRes>
{
Aggregation = aggregationProcessor.CreateInstance(a),
FirstValue = i.Row,
Key = k
},
CorrelationKeys = correlationKeys
};
}),
new SortDefinition <Correlated <AggregationResult <TIn, TKey, TAggrRes> >, TKey>(i => i.Row.Key, args.InputStream.SortDefinition.KeyPosition)));
}
public PivotSortedCorrelatedStreamNode(string name, PivotSortedCorrelatedArgs <TIn, TAggrRes, TKey> args) : base(name, args)
{
}