Java Code Examples for io.reactivex.Observable#range()

The following examples show how to use io.reactivex.Observable#range() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: OperatorsTest.java    From Java-programming-methodology-Rxjava-articles with Apache License 2.0 7 votes vote down vote up 
@Test
void zip_test3() {
    Integer[] numbers = {1, 2, 13, 34, 15, 17};
    String[] fruits = {"苹果", "梨", "李子", "荔枝",
            "芒果"};

    Observable<Integer> source1 = Observable.fromArray(numbers);
    Observable<String> source2 = Observable.fromArray(fruits);
    Observable<Integer> source3 = Observable.range(10, 3);

    Observable.zip(source1, source2, source3,
            (value1, value2, value3) -> value1 + ":" + value2 + "*" + value3)
              .subscribe(item -> System.out.println("we got: " + item + "  from the Observable"),
                      throwable -> System.out.println("异常-> " + throwable.getMessage()),
                      () -> System.out.println("Emission completed"));
}
Example 2
Source File: NonBlockingOperators.java    From Learn-Java-12-Programming with MIT License 6 votes vote down vote up 
private static void utilities(){
    Observable<String> obs = Observable.just("one")
            .flatMap(s -> Observable.fromArray(s.split("")));

    obs.delay(5, TimeUnit.MILLISECONDS)
            .subscribe(System.out::print);         //prints: one
    pauseMs(10);

    System.out.println();

    Observable source = Observable.range(1,5);
    Disposable disposable = source.subscribe();
    Observable.using(
            () -> disposable,
            x -> source,
            y -> System.out.println("Disposed: " + y) //prints: Disposed: DISPOSED
    )
    .delay(10, TimeUnit.MILLISECONDS)
    .subscribe(System.out::print);                   //prints: 12345
    pauseMs(25);
}
Example 3
Source File: BlockingOperators.java    From Learn-Java-12-Programming with MIT License 6 votes vote down vote up 
private static void observableBlocking2(){
    Observable<Integer> obs = Observable.range(1,5);

    List<Double> list = new ArrayList<>();
    obs.filter(i -> i % 2 == 0)
            .doOnNext(System.out::println)  //prints 2 and 4
            .map(Math::sqrt)
            .delay(100, TimeUnit.MILLISECONDS)
            .subscribe(d -> {
                if(list.size() == 1){
                    list.remove(0);
                }
                list.add(d);
            });
    System.out.println(list);   //prints: []

    try {
        TimeUnit.MILLISECONDS.sleep(200);
    } catch (InterruptedException e) {
        e.printStackTrace();
    }
    System.out.println(list);   //prints: [2.0]
}
Example 4
Source File: BlockingOperators.java    From Learn-Java-12-Programming with MIT License 6 votes vote down vote up 
private static void observableBlocking1(){
    Observable<Integer> obs = Observable.range(1,5);

    Double d2 = obs.filter(i -> i % 2 == 0)
                   .doOnNext(System.out::println)  //prints 2 and 4
                   .map(Math::sqrt)
                   .delay(100, TimeUnit.MILLISECONDS)
                   .blockingLast();
    System.out.println(d2);   //prints: 2.0

    List<Double> list = new ArrayList<>();
    obs.filter(i -> i % 2 == 0)
       .doOnNext(System.out::println)  //prints 2 and 4
       .map(Math::sqrt)
       .delay(100, TimeUnit.MILLISECONDS)
       .subscribe(d -> {
            if(list.size() == 1){
                list.remove(0);
            }
            list.add(d);
       });
    System.out.println(list);   //prints: []
}
Example 5
Source File: OperatorsTest.java    From Java-programming-methodology-Rxjava-articles with Apache License 2.0 5 votes vote down vote up 
@Test
void take_skip_test() {
    Observable<Integer> range = Observable.range(1, 5);
    range.take(3)
         .collect(ArrayList::new, List::add)
         .subscribe(System.out::println);  // [1, 2, 3]

    range.skip(3)
         .collect(ArrayList::new, List::add)
         .subscribe(System.out::println);  // [4, 5]
    range.skip(5)
         .collect(ArrayList::new, List::add)
         .subscribe(System.out::println);  // []


    range.takeLast(2)
         .collect(ArrayList::new, List::add)
         .subscribe(System.out::println);  // [4, 5]
    range.skipLast(2)
         .collect(ArrayList::new, List::add)
         .subscribe(System.out::println);  // [1, 2, 3]

    range.takeUntil(x -> x == 3)
         .collect(ArrayList::new, List::add)
         .subscribe(System.out::println);  // [1, 2, 3]
    range.takeWhile(x -> x != 3)
         .collect(ArrayList::new, List::add)
         .subscribe(System.out::println);  // [1, 2]

    range.all(x -> x != 4)
         .subscribe(System.out::println);    // [false]
    range.contains(4)
         .subscribe(System.out::println);         // [true]
}
Example 6
Source File: FlowableIntegrationTest.java    From tutorials with MIT License 5 votes vote down vote up 
@Test public void  whenErrorStrategyUsed_thenExceptionIsThrown() {
        Observable observable = Observable.range(1, 100000);
    TestSubscriber subscriber = observable.toFlowable(BackpressureStrategy.ERROR).observeOn(Schedulers.computation()).test();

    subscriber.awaitTerminalEvent();
    subscriber.assertError(MissingBackpressureException.class);
}
Example 7
Source File: FlowableIntegrationTest.java    From tutorials with MIT License 5 votes vote down vote up 
@Test public void whenMissingStrategyUsed_thenException() {
    Observable observable = Observable.range(1, 100000);
    TestSubscriber subscriber = observable.toFlowable(BackpressureStrategy.MISSING).observeOn(Schedulers.computation()).test();

    subscriber.awaitTerminalEvent();
    subscriber.assertError(MissingBackpressureException.class);
}
Example 8
Source File: RxJavaHooksUnitTest.java    From tutorials with MIT License 5 votes vote down vote up 
@Test
public void givenObservable_whenAssembled_shouldExecuteTheHook() {

    RxJavaPlugins.setOnObservableAssembly(observable -> {
        hookCalled = true;
        return observable;
    });

    Observable.range(1, 10);
    assertTrue(hookCalled);
}
Example 9
Source File: NotInFirst.java    From akarnokd-misc with Apache License 2.0 5 votes vote down vote up 
@Test
public void test() {
    Observable<Integer> obs1 = Observable.range(1, 10);
    Observable<Integer> obs2 = Observable.range(5, 10);
    
    obs1.collect(HashSet::new, (a, b) -> a.add(b))
    .flatMapObservable(set -> 
        obs2.filter(set::contains)
    )
    .subscribe(System.out::println);
}
Example 10
Source File: Demo_take.java    From Reactive-Programming-With-Java-9 with MIT License 5 votes vote down vote up 
public static void main(String[] args) {
	// TODO Auto-generated method stub
	Observable<Integer> observable = Observable.range(10, 9);
	observable.take(3).count().subscribe(item -> System.out.println("emitted " + item + " items"));
	observable.take(3).subscribe(new Observer<Integer>() {

		@Override
		public void onComplete() {
			// TODO Auto-generated method stub
			System.out.println("collected  items successfully");

		}

		@Override
		public void onError(Throwable throwable) {
			// TODO Auto-generated method stub
			throwable.printStackTrace();
		}

		@Override
		public void onNext(Integer value) {
			// TODO Auto-generated method stub
			System.out.println("collected item: " + value);

		}

		@Override
		public void onSubscribe(Disposable disposable) {
			// TODO Auto-generated method stub

		}
	});
}
Example 11
Source File: Demo_concat.java    From Reactive-Programming-With-Java-9 with MIT License 5 votes vote down vote up 
public static void main(String[] args) {
	// TODO Auto-generated method stub
	Observable source1=	Observable.range(1,5);
	Observable source2=Observable.just(10,20,30);
	Observable.concat(source1,source2).subscribe(new Consumer<Integer>() {

		@Override
		public void accept(Integer value) throws Exception {
			// TODO Auto-generated method stub
			System.out.println(value);
			
		}
	});

}
Example 12
Source File: Demo_zip.java    From Reactive-Programming-With-Java-9 with MIT License 5 votes vote down vote up 
public static void main(String[] args) {
	// TODO Auto-generated method stub
	Integer[] numbers = { 1, 2, 13, 34, 12, 10 };
	String[] fruits = { "mango", "pineapple", "apple", "mango", "papaya" };

	Observable<Integer> source1 = Observable.fromArray(numbers);
	Observable<String> source2 = Observable.fromArray(fruits);
	Observable<Integer> source3 = Observable.range(30, 3);
	Observable.zip(source1, source2, source3, (value1, value2, value3) -> {

		return value1 + ":" + value2 + "*" + value3;
	}).subscribe(new Observer<String>() {

		@Override
		public void onComplete() {
			// TODO Auto-generated method stub
			System.out.println("zipping completed successfully");

		}

		@Override
		public void onError(Throwable throwable) {
			// TODO Auto-generated method stub
			throwable.printStackTrace();

		}

		@Override
		public void onNext(String value) {
			// TODO Auto-generated method stub
			System.out.println(value);
		}

		@Override
		public void onSubscribe(Disposable arg0) {
			// TODO Auto-generated method stub

		}
	});
}
Example 13
Source File: DemoRange.java    From Reactive-Programming-With-Java-9 with MIT License 5 votes vote down vote up 
public static void main(String[] args) {
	// TODO Auto-generated method stub
	Observable<Integer> observable=Observable.range(10, 5);
	observable.subscribe(number->System.out.println(number));
}
Example 14
Source File: Demo_take_no_threading.java    From Reactive-Programming-With-Java-9 with MIT License 5 votes vote down vote up 
public static void main(String[] args) {
	// TODO Auto-generated method stub
	Observable<Integer> observable = Observable.range(1, 50);

	observable.take(5).subscribe(new Observer<Integer>() {

		@Override
		public void onComplete() {
			// TODO Auto-generated method stub
			System.out.println(Thread.currentThread().getName() + " finished reading of items");

		}

		@Override
		public void onError(Throwable throwable) {
			// TODO Auto-generated method stub
			System.out.println(Thread.currentThread().getName() + " finished with exception");

		}

		@Override
		public void onNext(Integer value) {
			// TODO Auto-generated method stub
			System.out.println(Thread.currentThread().getName() + " read item:-"+value);

		}

		@Override
		public void onSubscribe(Disposable arg0) {
			// TODO Auto-generated method stub

		}
	});

}
Example 15
Source File: DisposableUsage.java    From Learn-Java-12-Programming with MIT License 5 votes vote down vote up 
private static void disposable1(){
    Observable<Integer> obs = Observable.range(1,5);

    List<Double> list = new ArrayList<>();
    Disposable disposable =
            obs.filter(i -> i % 2 == 0)
                    .doOnNext(System.out::println)  //prints 2 and 4
                    .map(Math::sqrt)
                    .delay(100, TimeUnit.MILLISECONDS)
                    .subscribe(d -> {
                        if(list.size() == 1){
                            list.remove(0);
                        }
                        list.add(d);
                    });
    System.out.println(list);   //prints: []
    System.out.println(disposable.isDisposed()); //prints: false
    disposable.dispose();

    try {
        TimeUnit.MILLISECONDS.sleep(200);
    } catch (InterruptedException e) {
        e.printStackTrace();
    }

    System.out.println(disposable.isDisposed());  //prints: true
    disposable.dispose();

    System.out.println(list);   //prints: [2.0]

}
Example 16
Source File: DisposableUsage.java    From Learn-Java-12-Programming with MIT License 5 votes vote down vote up 
private static void disposable2(){
    Observable source = Observable.range(1,5);
    Disposable disposable = source.subscribe();
    Observable<Integer> obs = Observable.using(
            () -> disposable,
            r -> source,
            r -> System.out.println("Disposed: " + r) //prints: Disposed: DISPOSED
    );
    List<Double> list = new ArrayList<>();
    obs.filter(i -> i % 2 == 0)
            .doOnNext(System.out::println)  //prints 2 and 4
            .map(Math::sqrt)
            .delay(100, TimeUnit.MILLISECONDS)
            .subscribe(d -> {
                if(list.size() == 1){
                    list.remove(0);
                }
                list.add(d);
            });
    System.out.println(list);                  //prints: []
    try {
        TimeUnit.MILLISECONDS.sleep(200);
    } catch (InterruptedException e) {
        e.printStackTrace();
    }
    System.out.println(list);                  //prints: [2.0]
}
Example 17
Source File: DemoRange.java    From Reactive-Programming-With-Java-9 with MIT License 4 votes vote down vote up 
public static void main(String[] args) {
	// TODO Auto-generated method stub
	Observable<Integer> observable=Observable.range(10, 5);
	observable.subscribe(number->System.out.println(number));
}