public static StreamCache <Empty, T> Sort <T, U>(this IStreamable <Empty, T> stream, Expression <Func <T, U> > sortBySelector)
{
var u_comparer = Utility.CreateCompoundComparer(sortBySelector, ComparerExpression <U> .Default.GetCompareExpr()).Compile();
IStreamable <Empty, T> stream2 = stream;
stream.GetProperties(out StreamProperties <Empty, T> properties);
if (!properties.IsStartEdgeOnly)
{
var secondStream = new StreamEvent <T>[]
{
StreamEvent.CreateStart(StreamEvent.MaxSyncTime, default(T)),
StreamEvent.CreatePunctuation <T>(StreamEvent.InfinitySyncTime),
}.ToObservable().ToStreamable();
stream2 = stream.Join(secondStream, (x, y) => x);
}
var observableCache = stream2.ToPayloadEnumerable().ToList();
observableCache.Sort(new Comparison <T>(u_comparer));
var str = observableCache.ToObservable()
.ToAtemporalStreamable(TimelinePolicy.Sequence(80000))
;
var str2 = str
.SetProperty().IsConstantDuration(true, StreamEvent.InfinitySyncTime)
;
var str3 = str2.Cache();
return(str3);
}
private static void JoinPointsTest(bool fixedInterval = false)
{
var left = new Subject <StreamEvent <string> >();
var right = new Subject <StreamEvent <string> >();
var qc = new QueryContainer();
IStreamable <Empty, string> leftInput = qc.RegisterInput(left);
IStreamable <Empty, string> rightInput = qc.RegisterInput(right);
if (fixedInterval)
{
leftInput = leftInput.AlterEventDuration(1);
rightInput = rightInput.AlterEventDuration(1);
}
var query = leftInput.Join(
rightInput,
l => (l != null ? l[0].ToString() : null),
r => (r != null ? r[0].ToString() : null),
(l, r) => $"{l},{r}");
var output = new List <StreamEvent <string> >();
qc.RegisterOutput(query).ForEachAsync(o => output.Add(o));
var process = qc.Restore();
// Should match and egress immediately
left.OnNext(StreamEvent.CreatePoint(100, "A1"));
right.OnNext(StreamEvent.CreatePoint(100, "A2"));
process.Flush();
var expected = new StreamEvent <string>[]
{
StreamEvent.CreatePoint(100, "A1,A2"),
};
Assert.IsTrue(expected.SequenceEqual(output));
output.Clear();
left.OnCompleted();
right.OnCompleted();
}