Question

有没有办法强制Observable.Buffer在缓冲时间结束前刷新？

在示例中：

mSubscription = mFluxObservable.Buffer(new TimeSpan(0, 0, 1, 30)).Subscribe(o => saver(o, iSessionId));

我想在1:30时段结束前刷新数据！

Answer 1

这对我有用：

var subject = new Subject<Unit>();
var closing = Observable
    .Timer(new TimeSpan(0, 0, 1, 30))
    .Select(x => Unit.Default);

var query =
    mFluxObservable
        .Buffer(() => Observable
            .Amb(subject, closing)
            .Take(1));

现在我只需要调用subject.OnNext(Unit.Default)来强制缓冲区刷新。冲洗后立即启动一个新的缓冲区。

Answer 2

...和使用窗口基本相同的主体：

var bufferPeriod = TimeSpan.FromSeconds(1.5);
var source = Observable.Interval(TimeSpan.FromMilliseconds(100)).Take(50);

//source.Buffer(bufferPeriod).Dump();

var bufferFlush = new Subject<long>();//Or Subject<Unit>
source.Window(
        ()=>Observable.Merge(Observable.Timer(bufferPeriod), bufferFlush))
    .Select(window=>window.ToList())
    .Dump();

//Simulate calling flush.
Observable.Interval(TimeSpan.FromMilliseconds(1350)).Take(2).Subscribe(bufferFlush);

强制刷新到Observable.Buffer c＃

2 个答案: