io.reactivex.Flowable.concatMapIterable()方法的使用及代码示例

x33g5p2x  于2022-01-19 转载在 其他  
字(8.0k)|赞(0)|评价(0)|浏览(145)

本文整理了Java中io.reactivex.Flowable.concatMapIterable()方法的一些代码示例，展示了Flowable.concatMapIterable()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。Flowable.concatMapIterable()方法的具体详情如下：
包路径：io.reactivex.Flowable
类名称：Flowable
方法名：concatMapIterable

Flowable.concatMapIterable介绍

[英]Returns a Flowable that concatenate each item emitted by the source Publisher with the values in an Iterable corresponding to that item that is generated by a selector. Backpressure: The operator honors backpressure from downstream. The source Publishers is expected to honor backpressure as well. If the source Publisher violates the rule, the operator will signal a MissingBackpressureException. Scheduler: concatMapIterable does not operate by default on a particular Scheduler.
[中]返回一个Flowable，它将源发布服务器发出的每个项与选择器生成的该项对应的Iterable中的值连接起来。背压：操作员接受来自下游的背压。预计出版者也会接受背压。如果源发布服务器违反规则，操作员将发出MissingBackpressureException信号。调度程序：默认情况下，ConcatMapiteTable不会在特定调度程序上运行。

代码示例

代码示例来源：origin: ReactiveX/RxJava

  1. @Override
  2.   public Publisher<Integer> createPublisher(long elements) {
  3.     return
  4.         Flowable.range(0, (int)elements)
  5.         .concatMapIterable(new Function<Integer, Iterable<Integer>>() {
  6.           @Override
  7.           public Iterable<Integer> apply(Integer v) throws Exception {
  8.             return Collections.singletonList(v);
  9.           }
  10.         })
  11.       ;
  12.   }
  13. }

代码示例来源：origin: ReactiveX/RxJava

  1. @Test(expected = NullPointerException.class)
  2. public void concatMapIterableNull() {
  3.   just1.concatMapIterable(null);
  4. }

代码示例来源：origin: ReactiveX/RxJava

  1. /**
  2.  * Returns a Flowable that concatenate each item emitted by the source Publisher with the values in an
  3.  * Iterable corresponding to that item that is generated by a selector.
  4.  *
  5.  * <dl>
  6.  *  <dt><b>Backpressure:</b></dt>
  7.  *  <dd>The operator honors backpressure from downstream. The source {@code Publisher}s is
  8.  *  expected to honor backpressure as well. If the source {@code Publisher} violates the rule, the operator will
  9.  *  signal a {@code MissingBackpressureException}.</dd>
  10.  *  <dt><b>Scheduler:</b></dt>
  11.  *  <dd>{@code concatMapIterable} does not operate by default on a particular {@link Scheduler}.</dd>
  12.  * </dl>
  13.  *
  14.  * @param <U>
  15.  *            the type of item emitted by the resulting Publisher
  16.  * @param mapper
  17.  *            a function that returns an Iterable sequence of values for when given an item emitted by the
  18.  *            source Publisher
  19.  * @return a Flowable that emits the results of concatenating the items emitted by the source Publisher with
  20.  *         the values in the Iterables corresponding to those items, as generated by {@code collectionSelector}
  21.  * @see <a href="http://reactivex.io/documentation/operators/flatmap.html">ReactiveX operators documentation: FlatMap</a>
  22.  */
  23. @CheckReturnValue
  24. @BackpressureSupport(BackpressureKind.FULL)
  25. @SchedulerSupport(SchedulerSupport.NONE)
  26. public final <U> Flowable<U> concatMapIterable(Function<? super T, ? extends Iterable<? extends U>> mapper) {
  27.   return concatMapIterable(mapper, 2);
  28. }

代码示例来源：origin: ReactiveX/RxJava

  1. @Test(expected = NullPointerException.class)
  2. public void concatMapIterableReturnNull() {
  3.   just1.concatMapIterable(new Function<Integer, Iterable<Object>>() {
  4.     @Override
  5.     public Iterable<Object> apply(Integer v) {
  6.       return null;
  7.     }
  8.   }).blockingSubscribe();
  9. }

代码示例来源：origin: ReactiveX/RxJava

  1. @Test(expected = NullPointerException.class)
  2. public void concatMapIterableIteratorNull() {
  3.   just1.concatMapIterable(new Function<Integer, Iterable<Object>>() {
  4.     @Override
  5.     public Iterable<Object> apply(Integer v) {
  6.       return new Iterable<Object>() {
  7.         @Override
  8.         public Iterator<Object> iterator() {
  9.           return null;
  10.         }
  11.       };
  12.     }
  13.   }).blockingSubscribe();
  14. }

代码示例来源：origin: ReactiveX/RxJava

  1. @Test
  2. public void concatMapIterableBufferSize() {
  3.   Flowable.just(1, 2).concatMapIterable(new Function<Integer, Iterable<Integer>>() {
  4.     @Override
  5.     public Iterable<Integer> apply(Integer v) throws Exception {
  6.       return Arrays.asList(1, 2, 3, 4, 5);
  7.     }
  8.   }, 1)
  9.   .test()
  10.   .assertResult(1, 2, 3, 4, 5, 1, 2, 3, 4, 5);
  11. }

代码示例来源：origin: ReactiveX/RxJava

  1. @Test
  2. public void longRunning() {
  3.   TestSubscriber<Integer> ts = new TestSubscriber<Integer>();
  4.   int n = 1000 * 1000;
  5.   Flowable.range(1, n).concatMapIterable(mapper)
  6.   .subscribe(ts);
  7.   ts.assertValueCount(n * 2);
  8.   ts.assertNoErrors();
  9.   ts.assertComplete();
  10. }

代码示例来源：origin: ReactiveX/RxJava

  1. @Test
  2. public void normal() {
  3.   TestSubscriber<Integer> ts = new TestSubscriber<Integer>();
  4.   Flowable.range(1, 5).concatMapIterable(mapper)
  5.   .subscribe(ts);
  6.   ts.assertValues(1, 2, 2, 3, 3, 4, 4, 5, 5, 6);
  7.   ts.assertNoErrors();
  8.   ts.assertComplete();
  9. }

代码示例来源：origin: ReactiveX/RxJava

  1. @Test
  2. public void just() {
  3.   TestSubscriber<Integer> ts = new TestSubscriber<Integer>();
  4.   Flowable.just(1).concatMapIterable(mapper)
  5.   .subscribe(ts);
  6.   ts.assertValues(1, 2);
  7.   ts.assertNoErrors();
  8.   ts.assertComplete();
  9. }

代码示例来源：origin: ReactiveX/RxJava

  1. @Test
  2. public void empty() {
  3.   TestSubscriber<Integer> ts = new TestSubscriber<Integer>();
  4.   Flowable.<Integer>empty().concatMapIterable(mapper)
  5.   .subscribe(ts);
  6.   ts.assertNoValues();
  7.   ts.assertNoErrors();
  8.   ts.assertComplete();
  9. }

代码示例来源：origin: ReactiveX/RxJava

  1. @Test
  2. public void mixture() {
  3.   TestSubscriber<Integer> ts = new TestSubscriber<Integer>();
  4.   Flowable.range(0, 1000)
  5.   .concatMapIterable(new Function<Integer, Iterable<Integer>>() {
  6.     @Override
  7.     public Iterable<Integer> apply(Integer v) {
  8.       return (v % 2) == 0 ? Collections.singleton(1) : Collections.<Integer>emptySet();
  9.     }
  10.   })
  11.   .subscribe(ts);
  12.   ts.assertValueCount(500);
  13.   ts.assertNoErrors();
  14.   ts.assertComplete();
  15. }

代码示例来源：origin: ReactiveX/RxJava

  1. @Test
  2. public void justHidden() {
  3.   TestSubscriber<Integer> ts = new TestSubscriber<Integer>();
  4.   Flowable.just(1).hide().concatMapIterable(mapper)
  5.   .subscribe(ts);
  6.   ts.assertValues(1, 2);
  7.   ts.assertNoErrors();
  8.   ts.assertComplete();
  9. }

代码示例来源：origin: ReactiveX/RxJava

  1. @Test
  2. public void emptyInnerThenSingleBackpressured() {
  3.   TestSubscriber<Integer> ts = new TestSubscriber<Integer>(1);
  4.   Flowable.range(1, 2)
  5.   .concatMapIterable(new Function<Integer, Iterable<Integer>>() {
  6.     @Override
  7.     public Iterable<Integer> apply(Integer v) {
  8.       return v == 2 ? Collections.singleton(1) : Collections.<Integer>emptySet();
  9.     }
  10.   })
  11.   .subscribe(ts);
  12.   ts.assertValue(1);
  13.   ts.assertNoErrors();
  14.   ts.assertComplete();
  15. }

代码示例来源：origin: ReactiveX/RxJava

  1. @Test
  2. public void manyEmptyInnerThenSingleBackpressured() {
  3.   TestSubscriber<Integer> ts = new TestSubscriber<Integer>(1);
  4.   Flowable.range(1, 1000)
  5.   .concatMapIterable(new Function<Integer, Iterable<Integer>>() {
  6.     @Override
  7.     public Iterable<Integer> apply(Integer v) {
  8.       return v == 1000 ? Collections.singleton(1) : Collections.<Integer>emptySet();
  9.     }
  10.   })
  11.   .subscribe(ts);
  12.   ts.assertValue(1);
  13.   ts.assertNoErrors();
  14.   ts.assertComplete();
  15. }

代码示例来源：origin: ReactiveX/RxJava

  1. @Test
  2. public void asIntermediate() {
  3.   TestSubscriber<Integer> ts = new TestSubscriber<Integer>();
  4.   int n = 1000 * 1000;
  5.   Flowable.range(1, n).concatMapIterable(mapper).concatMap(new Function<Integer, Flowable<Integer>>() {
  6.     @Override
  7.     public Flowable<Integer> apply(Integer v) {
  8.       return Flowable.just(v);
  9.     }
  10.   })
  11.   .subscribe(ts);
  12.   ts.assertValueCount(n * 2);
  13.   ts.assertNoErrors();
  14.   ts.assertComplete();
  15. }

代码示例来源：origin: ReactiveX/RxJava

  1. @Test
  2. public void error() {
  3.   TestSubscriber<Integer> ts = new TestSubscriber<Integer>();
  4.   Flowable.<Integer>just(1).concatWith(Flowable.<Integer>error(new TestException()))
  5.   .concatMapIterable(mapper)
  6.   .subscribe(ts);
  7.   ts.assertValues(1, 2);
  8.   ts.assertError(TestException.class);
  9.   ts.assertNotComplete();
  10. }

代码示例来源：origin: ReactiveX/RxJava

  1. .concatMapIterable(new Function<Integer, Iterable<Integer>>() {
  2.   @Override
  3.   public Iterable<Integer> apply(Integer v) {

代码示例来源：origin: ReactiveX/RxJava

  1. .concatMapIterable(new Function<Integer, Iterable<Integer>>() {
  2.   @Override
  3.   public Iterable<Integer> apply(Integer v) {

代码示例来源：origin: ReactiveX/RxJava

  1. .concatMapIterable(new Function<Integer, Iterable<Integer>>() {
  2.   @Override
  3.   public Iterable<Integer> apply(Integer v) {

代码示例来源：origin: ReactiveX/RxJava

  1. @Test
  2. public void normalBackpressured() {
  3.   TestSubscriber<Integer> ts = new TestSubscriber<Integer>(0);
  4.   Flowable.range(1, 5).concatMapIterable(mapper)
  5.   .subscribe(ts);
  6.   ts.assertNoValues();
  7.   ts.assertNoErrors();
  8.   ts.assertNotComplete();
  9.   ts.request(1);
  10.   ts.assertValue(1);
  11.   ts.assertNoErrors();
  12.   ts.assertNotComplete();
  13.   ts.request(2);
  14.   ts.assertValues(1, 2, 2);
  15.   ts.assertNoErrors();
  16.   ts.assertNotComplete();
  17.   ts.request(7);
  18.   ts.assertValues(1, 2, 2, 3, 3, 4, 4, 5, 5, 6);
  19.   ts.assertNoErrors();
  20.   ts.assertComplete();
  21. }

内容来源于网络，如有侵权，请联系作者删除！

Flowable

相关文章

    查看更多

    热门标签

    更多
    JavaquerypythonNode开发语言requestUtil数据库Table后端算法LoggerMessageElementParser

    最新文章

    更多

    Flowable类方法

    • 蜀ICP备13028337号-1 大数据知识库 https://www.saoniuhuo.com © All rights reserved
    • 本站内容来源互联网,如果侵犯您的权益请联系我们删除, 联系方式：448109455@qq.com