protected override IStream <Correlated <TOut> > CreateOutputStream(CorrelateArgs <TInLeft, TInRight, TOut> args)
{
var rightDicoS = args.RightInputStream.Observable
.ToList()
.Map(l => l
.SelectMany(i => i.CorrelationKeys.Select(ck => new
{
CorrelationKey = ck,
Value = i
}))
.GroupBy(i => i.CorrelationKey)
.ToDictionary(i => i.Key, i => i.Select(v => v.Value.Row).ToList()));
var matchingS = args.LeftInputStream.Observable
.CombineWithLatest(rightDicoS, (l, rl) =>
{
var element = this.HandleMatching(l.CorrelationKeys, rl).FirstOrDefault();
// if (elements.Count > 1)
// {
// throw new Exception("Several elements are matching the correlation whereas only one should match.");
// }
return(new
{
Left = l,
Right = element //s.FirstOrDefault()
});
}, true);
return(base.CreateUnsortedStream(matchingS.Map(i => new Correlated <TOut> {
Row = args.ResultSelector(i.Left.Row, i.Right), CorrelationKeys = i.Left.CorrelationKeys
})));
}
protected override IStream <Correlated <TOut> > CreateOutputStream(CorrelateArgs <TInLeft, TInRight, TOut> args)
{
var rightDicoS = args.RightInputStream.Observable
.ToList()
.Map(l => l
.SelectMany(i => i.CorrelationKeys.Select(ck => new
{
CorrelationKey = ck,
Value = i
}))
.GroupBy(i => i.CorrelationKey)
.ToDictionary(i => i.Key, i => i.Select(v => v.Value.Row).ToList()));
var matchingS = args.LeftInputStream.Observable
.CombineWithLatest(rightDicoS, (l, rl) => this
.HandleMatching(l.CorrelationKeys, rl)
.Select(i => new Correlated <TOut>
{
CorrelationKeys = l.CorrelationKeys,
Row = args.ResultSelector(l.Row, i)
})
.ToList(), true);
return(base.CreateUnsortedStream(matchingS.MultiMap((List <Correlated <TOut> > i, Action <Correlated <TOut> > push) => i.ForEach(push))));
}