public static ConnectableObservable<Data> addCaches(final CacheObservable... ts) {
ArrayList<Observable<Data>> list = new ArrayList<>();
for (CacheObservable t : ts) list.add(t.observable);
ConnectableObservable<Data> co =
concat(from(list))
.first(
new Func1<Data, Boolean>() {
@Override
public Boolean call(Data data) {
return (data != null && data.isAvailable() && data.isLastest());
}
})
.publish();
co.subscribe(
new Subscriber<Data>() {
@Override
public void onCompleted() {}
@Override
public void onError(Throwable e) {}
@Override
public void onNext(Data data) {
for (CacheObservable t : ts) {
t.save(data);
}
}
});
return co;
}
@Override
public void call(Subscriber<? super TResult> child) {
Observable<TResult> observable;
ConnectableObservable<TIntermediate> connectable;
try {
connectable = new OperatorMulticast<TInput, TIntermediate>(source, subjectFactory);
observable = resultSelector.call(connectable);
} catch (Throwable t) {
child.onError(t);
return;
}
final SafeSubscriber<TResult> s = new SafeSubscriber<TResult>(child);
observable.unsafeSubscribe(s);
connectable.connect(
new Action1<Subscription>() {
@Override
public void call(Subscription t1) {
s.add(t1);
}
});
}
public void exampleReplayWithBufferSize() throws InterruptedException {
ConnectableObservable<Long> source =
Observable.interval(1000, TimeUnit.MILLISECONDS).take(5).replay(2);
source.connect();
Thread.sleep(4500);
source.subscribe(System.out::println);
// 2
// 3
// 4
}
@Test
public void testReplayWithBufferSize() {
TestScheduler scheduler = Schedulers.test();
TestSubscriber<Long> tester = new TestSubscriber<>();
ConnectableObservable<Long> source =
Observable.interval(1000, TimeUnit.MILLISECONDS, scheduler).take(5).replay(2, scheduler);
source.connect();
scheduler.advanceTimeBy(4500, TimeUnit.MILLISECONDS);
source.subscribe(tester);
scheduler.triggerActions();
tester.assertReceivedOnNext(Arrays.asList(2L, 3L));
scheduler.advanceTimeBy(500, TimeUnit.MILLISECONDS);
tester.assertReceivedOnNext(Arrays.asList(2L, 3L, 4L));
}
@Override
public void onStart() {
super.onStart();
_subscriptions = new CompositeSubscription();
ConnectableObservable<Object> tapEventEmitter = _rxBus.toObserverable().publish();
_subscriptions //
.add(
bindSupportFragment(this, tapEventEmitter) //
.subscribe(
new Action1<Object>() {
@Override
public void call(Object event) {
if (event instanceof RxBusDemoFragment.TapEvent) {
_showTapText();
}
}
}));
_subscriptions //
.add(
tapEventEmitter
.publish(
new Func1<Observable<Object>, Observable<List<Object>>>() {
@Override
public Observable<List<Object>> call(Observable<Object> stream) {
return stream.buffer(stream.debounce(1, TimeUnit.SECONDS));
}
})
.observeOn(AndroidSchedulers.mainThread())
.subscribe(
new Action1<List<Object>>() {
@Override
public void call(List<Object> taps) {
_showTapCount(taps.size());
}
}));
_subscriptions.add(tapEventEmitter.connect());
}
@Test
public void testReplayWithTime() throws InterruptedException {
TestScheduler scheduler = Schedulers.test();
TestSubscriber<Long> tester = new TestSubscriber<>();
ConnectableObservable<Long> source =
Observable.interval(1000, TimeUnit.MILLISECONDS, scheduler)
.take(5)
.replay(2000, TimeUnit.MILLISECONDS, scheduler);
source.connect();
scheduler.advanceTimeBy(4500, TimeUnit.MILLISECONDS);
source.subscribe(tester);
tester.assertReceivedOnNext(Arrays.asList(2L, 3L));
scheduler.advanceTimeBy(500, TimeUnit.MILLISECONDS);
tester.assertReceivedOnNext(Arrays.asList(2L, 3L, 4L));
// 2
// 3
// 4
}
public void exampleReplay() throws InterruptedException {
ConnectableObservable<Long> cold = Observable.interval(200, TimeUnit.MILLISECONDS).replay();
cold.connect();
System.out.println("Subscribe first");
cold.subscribe(i -> System.out.println("First: " + i));
Thread.sleep(700);
System.out.println("Subscribe second");
cold.subscribe(i -> System.out.println("Second: " + i));
Thread.sleep(500);
// Subscribe first
// First: 0
// First: 1
// First: 2
// Subscribe second
// Second: 0
// Second: 1
// Second: 2
// First: 3
// Second: 3
}
@Test
public void testReplay() throws InterruptedException {
TestScheduler scheduler = Schedulers.test();
TestSubscriber<Long> tester1 = new TestSubscriber<>();
TestSubscriber<Long> tester2 = new TestSubscriber<>();
ConnectableObservable<Long> cold =
Observable.interval(200, TimeUnit.MILLISECONDS, scheduler).replay();
Subscription connection = cold.connect();
cold.subscribe(tester1);
scheduler.advanceTimeBy(700, TimeUnit.MILLISECONDS);
tester1.assertReceivedOnNext(Arrays.asList(0L, 1L, 2L));
tester2.assertReceivedOnNext(Arrays.asList());
cold.subscribe(tester2);
tester1.assertReceivedOnNext(Arrays.asList(0L, 1L, 2L));
tester2.assertReceivedOnNext(Arrays.asList(0L, 1L, 2L));
scheduler.advanceTimeBy(500, TimeUnit.MILLISECONDS);
tester1.assertReceivedOnNext(Arrays.asList(0L, 1L, 2L, 3L, 4L, 5L));
tester2.assertReceivedOnNext(Arrays.asList(0L, 1L, 2L, 3L, 4L, 5L));
connection.unsubscribe();
}
public static void main(String[] args) {
Observable<String> lineInput =
Observable.create(
(Subscriber<? super String> subscriber) -> {
if (subscriber.isUnsubscribed()) return;
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
String line = null;
try {
while (!subscriber.isUnsubscribed() && (line = reader.readLine()) != null) {
subscriber.onNext(line);
}
if (!subscriber.isUnsubscribed()) {
subscriber.onCompleted();
}
} catch (IOException e) {
subscriber.onError(e);
}
});
ConnectableObservable<String> sourceObs = lineInput.publish();
Function<Pattern, Observable<Integer>> lineParser =
(pattern) ->
sourceObs
.filter(
line -> {
return pattern.matcher(line).matches();
})
.map(
line -> {
return Integer.parseInt(line.substring(line.indexOf("=") + 1).trim());
});
Subscriber<Integer> whenUnsub =
new SafeSubscriber<Integer>(
new Subscriber<Integer>() {
@Override
public void onCompleted() {}
@Override
public void onError(Throwable throwable) {}
@Override
public void onNext(Integer s) {
System.out.println(s);
}
});
whenUnsub.add(
Subscriptions.create(
() -> {
System.out.println("unsubscribe callback");
}));
Observable.combineLatest(
lineParser.apply(Pattern.compile("^a.*")).startWith(0),
lineParser.apply(Pattern.compile("^b.*")).startWith(0),
(x, y) -> x + y)
.subscribe(whenUnsub);
sourceObs.connect();
}
