protected override TStream CreateOutputStream(SubstractUnsortedArgs <TStream, TInLeft, TInRight, TKey> args)
{
var keyToExcludeHashObservable = args.RightInputStream.Observable.ToList().Map(i => new HashSet <TKey>(i.Select(j => args.GetRightKey(j)).Distinct()));
var outObservable = args.LeftInputStream.Observable
.CombineWithLatest(
keyToExcludeHashObservable,
(l, r) => new
{
Value = l,
MustExclude = r.Contains(args.GetLeftKey(l))
})
.Filter(i => !i.MustExclude)
.Map(i => i.Value);
return(base.CreateMatchingStream(outObservable, args.LeftInputStream));
}
public SubstractUnsortedStreamNode(string name, SubstractUnsortedArgs <TStream, TInLeft, TInRight, TKey> args) : base(name, args)
{
}