本文整理了Java中io.reactivex.Observable.lastElement()
方法的一些代码示例,展示了Observable.lastElement()
的具体用法。这些代码示例主要来源于Github
/Stackoverflow
/Maven
等平台,是从一些精选项目中提取出来的代码,具有较强的参考意义,能在一定程度帮忙到你。Observable.lastElement()
方法的具体详情如下:
包路径:io.reactivex.Observable
类名称:Observable
方法名:lastElement
[英]Returns a Maybe that emits the last item emitted by this Observable or completes if this Observable is empty.
Scheduler: lastElement does not operate by default on a particular Scheduler.
[中]返回一个Maybe,该Maybe发出此可观察对象发出的最后一项,如果此可观察对象为空,则返回complete。
调度器:默认情况下,lastElement不会在特定的调度器上运行。
代码示例来源:origin: ReactiveX/RxJava
@Override
public MaybeSource<Object> apply(Observable<Object> o) throws Exception {
return o.lastElement();
}
});
代码示例来源:origin: ReactiveX/RxJava
@Override
public ObservableSource<Object> apply(Observable<Object> o) throws Exception {
return o.lastElement().toObservable();
}
});
代码示例来源:origin: ReactiveX/RxJava
@Test
public void testLastViaObservable() {
Observable.just(1, 2, 3).lastElement();
}
代码示例来源:origin: ReactiveX/RxJava
@Test
public void testLastWithElements() {
Maybe<Integer> last = Observable.just(1, 2, 3).lastElement();
assertEquals(3, last.blockingGet().intValue());
}
代码示例来源:origin: ReactiveX/RxJava
@Test
public void testLast() {
Maybe<Integer> o = Observable.just(1, 2, 3).lastElement();
MaybeObserver<Integer> observer = TestHelper.mockMaybeObserver();
o.subscribe(observer);
InOrder inOrder = inOrder(observer);
inOrder.verify(observer, times(1)).onSuccess(3);
// inOrder.verify(observer, times(1)).onComplete();
inOrder.verifyNoMoreInteractions();
}
代码示例来源:origin: ReactiveX/RxJava
@Test
public void testLastWithOneElement() {
Maybe<Integer> o = Observable.just(1).lastElement();
MaybeObserver<Integer> observer = TestHelper.mockMaybeObserver();
o.subscribe(observer);
InOrder inOrder = inOrder(observer);
inOrder.verify(observer, times(1)).onSuccess(1);
// inOrder.verify(observer, times(1)).onComplete();
inOrder.verifyNoMoreInteractions();
}
代码示例来源:origin: ReactiveX/RxJava
@Test
public void testLastMultiSubscribe() {
Maybe<Integer> last = Observable.just(1, 2, 3).lastElement();
assertEquals(3, last.blockingGet().intValue());
assertEquals(3, last.blockingGet().intValue());
}
代码示例来源:origin: ReactiveX/RxJava
@Test
public void testLastWithEmpty() {
Maybe<Integer> o = Observable.<Integer> empty().lastElement();
MaybeObserver<Integer> observer = TestHelper.mockMaybeObserver();
o.subscribe(observer);
InOrder inOrder = inOrder(observer);
inOrder.verify(observer).onComplete();
inOrder.verify(observer, never()).onError(any(Throwable.class));
inOrder.verifyNoMoreInteractions();
}
代码示例来源:origin: ReactiveX/RxJava
@Test
public void testLastWithPredicateAndEmpty() {
Maybe<Integer> o = Observable.just(1)
.filter(
new Predicate<Integer>() {
@Override
public boolean test(Integer t1) {
return t1 % 2 == 0;
}
}).lastElement();
MaybeObserver<Integer> observer = TestHelper.mockMaybeObserver();
o.subscribe(observer);
InOrder inOrder = inOrder(observer);
inOrder.verify(observer).onComplete();
inOrder.verify(observer, never()).onError(any(Throwable.class));
inOrder.verifyNoMoreInteractions();
}
代码示例来源:origin: ReactiveX/RxJava
@Test
public void testLastWithPredicate() {
Maybe<Integer> o = Observable.just(1, 2, 3, 4, 5, 6)
.filter(new Predicate<Integer>() {
@Override
public boolean test(Integer t1) {
return t1 % 2 == 0;
}
})
.lastElement();
MaybeObserver<Integer> observer = TestHelper.mockMaybeObserver();
o.subscribe(observer);
InOrder inOrder = inOrder(observer);
inOrder.verify(observer, times(1)).onSuccess(6);
// inOrder.verify(observer, times(1)).onComplete();
inOrder.verifyNoMoreInteractions();
}
代码示例来源:origin: ReactiveX/RxJava
@Test
public void testLastWithPredicateAndOneElement() {
Maybe<Integer> o = Observable.just(1, 2)
.filter(
new Predicate<Integer>() {
@Override
public boolean test(Integer t1) {
return t1 % 2 == 0;
}
})
.lastElement();
MaybeObserver<Integer> observer = TestHelper.mockMaybeObserver();
o.subscribe(observer);
InOrder inOrder = inOrder(observer);
inOrder.verify(observer, times(1)).onSuccess(2);
// inOrder.verify(observer, times(1)).onComplete();
inOrder.verifyNoMoreInteractions();
}
代码示例来源:origin: ReactiveX/RxJava
@Test
public void testLastWithNoElements() {
Maybe<?> last = Observable.empty().lastElement();
assertNull(last.blockingGet());
}
代码示例来源:origin: ReactiveX/RxJava
/**
* We expect an ArithmeticException exception here because last() emits a single value
* but then we divide by 0.
*/
@Test(expected = ArithmeticException.class)
public void testMapWithErrorInFunc() {
Observable.range(1, 1).lastElement().map(new Function<Integer, Integer>() {
@Override
public Integer apply(Integer i) {
return i / 0;
}
}).blockingGet();
}
代码示例来源:origin: ReactiveX/RxJava
@Test
public void dispose() {
TestHelper.checkDisposed(Observable.never().lastElement().toObservable());
TestHelper.checkDisposed(Observable.never().lastElement());
TestHelper.checkDisposed(Observable.just(1).lastOrError().toObservable());
TestHelper.checkDisposed(Observable.just(1).lastOrError());
TestHelper.checkDisposed(Observable.just(1).last(2).toObservable());
TestHelper.checkDisposed(Observable.just(1).last(2));
}
代码示例来源:origin: ReactiveX/RxJava
/**
* While mapping over range(1,0).last() we expect NoSuchElementException since the sequence is empty.
*/
@Test
public void testErrorPassesThruMap() {
assertNull(Observable.range(1, 0).lastElement().map(new Function<Integer, Integer>() {
@Override
public Integer apply(Integer i) {
return i;
}
}).blockingGet());
}
代码示例来源:origin: ReactiveX/RxJava
@Test
public void error() {
Observable.error(new TestException())
.lastElement()
.test()
.assertFailure(TestException.class);
}
代码示例来源:origin: radixdlt/radixdlt-java
public io.reactivex.Maybe<Collection<Consumable>> getUnconsumedConsumables() {
return newValidTransactions.lastElement().map(lastTx -> unconsumedConsumables.values());
}
}
代码示例来源:origin: florent37/RxGps
public Maybe<Location> lastLocation() {
return checkPlayServicesAvailable()
.flatMap(new Function<Boolean, ObservableSource<Boolean>>() {
@Override
public ObservableSource<Boolean> apply(@NonNull Boolean aBoolean) throws Exception {
return request(Manifest.permission.ACCESS_COARSE_LOCATION);
}
})
.flatMapMaybe(new Function<Boolean, MaybeSource<Location>>() {
@Override
public MaybeSource<Location> apply(@NonNull Boolean aBoolean) throws Exception {
return rxLocation.location().lastLocation();
}
})
.lastElement();
}
代码示例来源:origin: florent37/RxGps
public Maybe<Location> lastLocationIfExists() {
return checkPlayServicesAvailable()
.flatMap(new Function<Boolean, ObservableSource<Boolean>>() {
@Override
public ObservableSource<Boolean> apply(@android.support.annotation.NonNull Boolean aBoolean) throws Exception {
return request(Manifest.permission.ACCESS_COARSE_LOCATION);
}
})
.flatMapSingle(new Function<Boolean, SingleSource<Boolean>>() {
@Override
public SingleSource<Boolean> apply(Boolean aBoolean) throws Exception {
return rxLocation.location().isLocationAvailable();
}
})
.flatMapMaybe(new Function<Boolean, MaybeSource<Location>>() {
@Override
public MaybeSource<Location> apply(@android.support.annotation.NonNull Boolean isExists) throws Exception {
if (isExists) {
return rxLocation.location().lastLocation();
} else {
throw new RxGps.LastLocationUnavailableException();
}
}
})
.lastElement();
}
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