org.eclipse.microprofile.reactive.streams.operators.spi.Graph Java Examples
The following examples show how to use
org.eclipse.microprofile.reactive.streams.operators.spi.Graph.
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Example #1
Source File: Engine.java From smallrye-reactive-streams-operators with Apache License 2.0 | 6 votes |
@Override public <T> CompletionStage<T> buildCompletion(Graph graph) { Flowable<?> flowable = null; for (Stage stage : graph.getStages()) { Operator operator = Stages.lookup(stage); if (operator instanceof PublisherOperator) { flowable = createPublisher(stage, (PublisherOperator) operator); } else if (operator instanceof ProcessorOperator) { flowable = applyProcessors(flowable, stage, (ProcessorOperator) operator); } else { return applySubscriber(flowable, stage, (TerminalOperator) operator); } } throw new IllegalArgumentException("Graph did not have terminal stage"); }
Example #2
Source File: Engine.java From smallrye-reactive-streams-operators with Apache License 2.0 | 6 votes |
@Override public <T, R> SubscriberWithCompletionStage<T, R> buildSubscriber(Graph graph) { Processor<T, T> processor = new ConnectableProcessor<>(); Flowable<T> flowable = Flowable.fromPublisher(processor); for (Stage stage : graph.getStages()) { Operator operator = Stages.lookup(stage); if (operator instanceof ProcessorOperator) { flowable = applyProcessors(flowable, stage, (ProcessorOperator) operator); } else if (operator instanceof TerminalOperator) { CompletionStage<R> result = applySubscriber(Transformer.apply(flowable), stage, (TerminalOperator) operator); return new DefaultSubscriberWithCompletionStage<>(processor, result); } else { throw new UnsupportedStageException(stage); } } throw new IllegalArgumentException("The graph does not have a valid final stage"); }
Example #3
Source File: ConcatStageFactoryTest.java From smallrye-reactive-streams-operators with Apache License 2.0 | 6 votes |
@Test(expected = NullPointerException.class) public void testWithoutEngine() { Graph g1 = () -> Collections.singletonList((Stage.Of) () -> Arrays.asList(1, 2, 3)); Graph g2 = () -> Collections.singletonList((Stage.Of) () -> Arrays.asList(1, 2, 3)); factory.create(null, new Stage.Concat() { @Override public Graph getFirst() { return g1; } @Override public Graph getSecond() { return g2; } }); }
Example #4
Source File: Engine.java From smallrye-mutiny with Apache License 2.0 | 6 votes |
@Override public <T> CompletionStage<T> buildCompletion(Graph graph) { Multi<?> flowable = null; for (Stage stage : graph.getStages()) { Operator operator = Stages.lookup(stage); if (operator instanceof PublisherOperator) { flowable = createPublisher(stage, (PublisherOperator) operator); } else if (operator instanceof ProcessorOperator) { flowable = applyProcessors(flowable, stage, (ProcessorOperator) operator); } else { return applySubscriber(flowable, stage, (TerminalOperator) operator); } } throw new IllegalArgumentException("Graph did not have terminal stage"); }
Example #5
Source File: FlatMapStageFactory.java From smallrye-mutiny with Apache License 2.0 | 5 votes |
@Override public Multi<O> apply(Multi<I> source) { return source .onItem().<O> producePublisher(item -> { Graph graph = mapper.apply(item); return engine.buildPublisher(Objects.requireNonNull(graph)); }) .concatenate(); }
Example #6
Source File: EngineTest.java From smallrye-reactive-streams-operators with Apache License 2.0 | 5 votes |
@Test(expected = UnsupportedStageException.class) public void testCreatingPublisherWithUnknownStage() { engine = new Engine(); List<Stage> stages = new ArrayList<>(); stages.add(new Stage() { // Unknown stage. }); stages.add((Stage.Map) () -> i -> (int) i + 1); Graph graph = () -> stages; engine.buildPublisher(graph); }
Example #7
Source File: EngineTest.java From smallrye-mutiny with Apache License 2.0 | 5 votes |
@Test(expected = IllegalArgumentException.class) public void testInvalidSubscriber() { engine = new Engine(); List<Stage> stages = new ArrayList<>(); stages.add((Stage.Map) () -> i -> (int) i + 1); // This graph is not closed - so it's invalid Graph graph = () -> stages; engine.buildSubscriber(graph); }
Example #8
Source File: EngineTest.java From smallrye-mutiny with Apache License 2.0 | 5 votes |
@Test public void testValidCompletion() { engine = new Engine(); List<Stage> stages = new ArrayList<>(); stages.add((Stage.PublisherStage) () -> Multi.createFrom().empty()); stages.add((Stage.Map) () -> i -> (int) i + 1); stages.add(new Stage.FindFirst() { }); Graph graph = () -> stages; assertThat(engine.buildCompletion(graph)).isNotNull(); }
Example #9
Source File: EngineTest.java From smallrye-mutiny with Apache License 2.0 | 5 votes |
@Test(expected = IllegalArgumentException.class) public void testInvalidCompletion() { engine = new Engine(); List<Stage> stages = new ArrayList<>(); stages.add((Stage.PublisherStage) () -> Multi.createFrom().empty()); stages.add((Stage.Map) () -> i -> (int) i + 1); // This graph is not closed - so it's invalid Graph graph = () -> stages; engine.buildCompletion(graph); }
Example #10
Source File: EngineTest.java From smallrye-mutiny with Apache License 2.0 | 5 votes |
@Test(expected = UnsupportedStageException.class) public void testCompletionWithUnknownStage() { engine = new Engine(); List<Stage> stages = new ArrayList<>(); stages.add((Stage.PublisherStage) () -> Multi.createFrom().empty()); stages.add((Stage.Map) () -> i -> (int) i + 1); stages.add(new Stage() { // Unknown stage. }); stages.add(new Stage.FindFirst() { }); Graph graph = () -> stages; assertThat(engine.buildCompletion(graph)).isNotNull(); }
Example #11
Source File: EngineTest.java From smallrye-reactive-streams-operators with Apache License 2.0 | 5 votes |
@Test(expected = UnsupportedStageException.class) public void testCompletionWithUnknownStage() { engine = new Engine(); List<Stage> stages = new ArrayList<>(); stages.add((Stage.PublisherStage) Flowable::empty); stages.add((Stage.Map) () -> i -> (int) i + 1); stages.add(new Stage() { // Unknown stage. }); stages.add(new Stage.FindFirst() { }); Graph graph = () -> stages; assertThat(engine.buildCompletion(graph)).isNotNull(); }
Example #12
Source File: EngineTest.java From smallrye-mutiny with Apache License 2.0 | 5 votes |
@Test public void testValidPublisher() { engine = new Engine(); List<Stage> stages = new ArrayList<>(); stages.add((Stage.Of) () -> Arrays.asList(1, 2, 3)); stages.add((Stage.Map) () -> i -> (int) i + 1); Graph graph = () -> stages; assertThat(engine.buildPublisher(graph)).isNotNull(); }
Example #13
Source File: Engine.java From smallrye-mutiny with Apache License 2.0 | 5 votes |
@Override public <T, R> Processor<T, R> buildProcessor(Graph graph) { Processor<T, T> processor = new ConnectableProcessor<>(); Multi<T> multi = Multi.createFrom().publisher(processor); for (Stage stage : graph.getStages()) { Operator operator = Stages.lookup(stage); multi = applyProcessors(multi, stage, (ProcessorOperator) operator); } //noinspection unchecked return (Processor<T, R>) new WrappedProcessor<>(processor, multi); }
Example #14
Source File: ReactiveStreamsVerification.java From microprofile-reactive-streams-operators with Apache License 2.0 | 5 votes |
@Test public void iterate() { Graph graph = graphFor(rs.iterate(1, i -> i + 1)); Iterator iter = getStage(Stage.Of.class, graph).getElements().iterator(); assertTrue(iter.hasNext()); assertEquals(iter.next(), 1); assertTrue(iter.hasNext()); assertEquals(iter.next(), 2); assertTrue(iter.hasNext()); assertEquals(iter.next(), 3); }
Example #15
Source File: ProcessorBuilderVerification.java From microprofile-reactive-streams-operators with Apache License 2.0 | 5 votes |
@Test public void peek() { AtomicInteger peeked = new AtomicInteger(); Graph graph = graphFor(builder().peek(peeked::set)); ((Consumer) getAddedStage(Stage.Peek.class, graph).getConsumer()).accept(1); assertEquals(peeked.get(), 1); }
Example #16
Source File: PublisherBuilderVerification.java From microprofile-reactive-streams-operators with Apache License 2.0 | 5 votes |
@Test public void toMultipleStages() { Graph graph = graphFor(builder().to( rs.<Integer>builder().map(Function.identity()).cancel())); assertEquals(graph.getStages().size(), 3); Iterator<Stage> stages = graph.getStages().iterator(); assertTrue(stages.next() instanceof Stage.Of); assertTrue(stages.next() instanceof Stage.Map); assertTrue(stages.next() instanceof Stage.Cancel); }
Example #17
Source File: EngineTest.java From smallrye-reactive-streams-operators with Apache License 2.0 | 5 votes |
@Test(expected = UnsupportedStageException.class) public void testUnknownTerminalStage() { engine = new Engine(); List<Stage> stages = new ArrayList<>(); stages.add((Stage.Map) () -> i -> (int) i + 1); stages.add(new Stage() { // Unknown stage }); Graph graph = () -> stages; engine.buildSubscriber(graph); }
Example #18
Source File: PublisherBuilderVerification.java From microprofile-reactive-streams-operators with Apache License 2.0 | 5 votes |
@Test public void viaBuilderFromDifferentReactiveStreamsImplementation() { Graph graph = graphFor(builder().via(Mocks.PROCESSOR_BUILDER)); assertEquals(graph.getStages().size(), 3); Iterator<Stage> stages = graph.getStages().iterator(); assertTrue(stages.next() instanceof Stage.Of); assertTrue(stages.next() instanceof Stage.Distinct); assertTrue(stages.next() instanceof Stage.Limit); }
Example #19
Source File: ProcessorBuilderVerification.java From microprofile-reactive-streams-operators with Apache License 2.0 | 5 votes |
@Test public void forEach() { AtomicInteger received = new AtomicInteger(); Graph graph = graphFor(builder().forEach(received::set)); Collector collector = getAddedStage(Stage.Collect.class, graph).getCollector(); Object container = collector.supplier().get(); collector.accumulator().accept(container, 1); assertEquals(received.get(), 1); assertNull(collector.finisher().apply(container)); }
Example #20
Source File: ProcessorBuilderVerification.java From microprofile-reactive-streams-operators with Apache License 2.0 | 5 votes |
private <S extends Stage> S getAddedStage(Class<S> clazz, Graph graph) { assertEquals(graph.getStages().size(), 2, "Graph does not have two stages"); Iterator<Stage> stages = graph.getStages().iterator(); Stage first = stages.next(); assertTrue(first instanceof Stage.Map, "First stage " + first + " is not a " + Stage.Map.class); Stage second = stages.next(); assertTrue(clazz.isInstance(second), "Second stage " + second + " is not a " + clazz); return clazz.cast(second); }
Example #21
Source File: OnErrorResumeWithStageFactory.java From smallrye-reactive-streams-operators with Apache License 2.0 | 5 votes |
@SuppressWarnings("unchecked") @Override public <I, O> ProcessingStage<I, O> create(Engine engine, Stage.OnErrorResumeWith stage) { Function<Throwable, Graph> function = Objects.requireNonNull(stage).getFunction(); Objects.requireNonNull(function); return source -> (Flowable<O>) RxJavaPlugins.onAssembly( new OnErrorResumeWith<>(source, (Throwable err) -> { Graph graph = function.apply(err); return Flowable.fromPublisher( Objects.requireNonNull(engine.buildPublisher(Objects.requireNonNull(graph)))); })); }
Example #22
Source File: ProcessorBuilderVerification.java From microprofile-reactive-streams-operators with Apache License 2.0 | 5 votes |
@Test public void reduce() { Graph graph = graphFor(builder().reduce((a, b) -> a - b)); Collector collector = getAddedStage(Stage.Collect.class, graph).getCollector(); Object container1 = collector.supplier().get(); assertEquals(collector.finisher().apply(container1), Optional.empty()); Object container2 = collector.supplier().get(); collector.accumulator().accept(container2, 2); assertEquals(collector.finisher().apply(container2), Optional.of(2)); Object container3 = collector.supplier().get(); collector.accumulator().accept(container3, 5); collector.accumulator().accept(container3, 2); assertEquals(collector.finisher().apply(container3), Optional.of(3)); }
Example #23
Source File: CoupledStageFactory.java From smallrye-reactive-streams-operators with Apache License 2.0 | 5 votes |
@Override public <I, O> ProcessingStage<I, O> create(Engine engine, Stage.Coupled stage) { Graph source = Objects.requireNonNull(stage.getPublisher()); Graph sink = Objects.requireNonNull(stage.getSubscriber()); Publisher<O> publisher = engine.buildPublisher(source); SubscriberWithCompletionStage<I, ?> subscriber = engine.buildSubscriber(sink); return upstream -> Flowable.fromPublisher( new CouplingProcessor<>(upstream, subscriber.getSubscriber(), publisher)); }
Example #24
Source File: ProcessorBuilderVerification.java From microprofile-reactive-streams-operators with Apache License 2.0 | 5 votes |
@Test public void onErrorResumeWithRsPublisher() { Graph graph = graphFor(builder().onErrorResumeWithRsPublisher(t -> Mocks.PUBLISHER)); Graph resumeWith = getAddedStage(Stage.OnErrorResumeWith.class, graph).getFunction().apply(new RuntimeException()); assertEquals(resumeWith.getStages().size(), 1); assertSame(((Stage.PublisherStage) resumeWith.getStages().iterator().next()).getRsPublisher(), Mocks.PUBLISHER); }
Example #25
Source File: ProcessorBuilderVerification.java From microprofile-reactive-streams-operators with Apache License 2.0 | 5 votes |
@Test public void collectComponents() { Supplier supplier = () -> null; BiConsumer accumulator = (a, b) -> {}; Graph graph = graphFor(builder().collect(supplier, accumulator)); Collector collector = getAddedStage(Stage.Collect.class, graph).getCollector(); assertSame(collector.supplier(), supplier); assertSame(collector.accumulator(), accumulator); // Finisher must be identity function Object myObject = new Object(); assertSame(collector.finisher().apply(myObject), myObject); }
Example #26
Source File: ProcessorBuilderVerification.java From microprofile-reactive-streams-operators with Apache License 2.0 | 5 votes |
@Test public void toList() { Graph graph = graphFor(builder().toList()); Collector collector = getAddedStage(Stage.Collect.class, graph).getCollector(); Object container = collector.supplier().get(); collector.accumulator().accept(container, 1); collector.accumulator().accept(container, 2); collector.accumulator().accept(container, 3); assertEquals(collector.finisher().apply(container), Arrays.asList(1, 2, 3)); }
Example #27
Source File: PublisherBuilderVerification.java From microprofile-reactive-streams-operators with Apache License 2.0 | 5 votes |
@Test public void toList() { Graph graph = graphFor(builder().toList()); Collector collector = getAddedStage(Stage.Collect.class, graph).getCollector(); Object container = collector.supplier().get(); collector.accumulator().accept(container, 1); collector.accumulator().accept(container, 2); collector.accumulator().accept(container, 3); assertEquals(collector.finisher().apply(container), Arrays.asList(1, 2, 3)); }
Example #28
Source File: PublisherBuilderVerification.java From microprofile-reactive-streams-operators with Apache License 2.0 | 5 votes |
@Test public void onErrorResumeWith() { Graph graph = graphFor(builder().onErrorResumeWith(t -> rs.empty())); Graph resumeWith = getAddedStage(Stage.OnErrorResumeWith.class, graph).getFunction().apply(new RuntimeException()); assertEquals(resumeWith.getStages().size(), 1); assertEmptyStage(resumeWith.getStages().iterator().next()); }
Example #29
Source File: PublisherBuilderVerification.java From microprofile-reactive-streams-operators with Apache License 2.0 | 5 votes |
@Test public void toBuilderFromDifferentReactiveStreamsImplementation() { Graph graph = graphFor(builder().to(Mocks.SUBSCRIBER_BUILDER)); assertEquals(graph.getStages().size(), 3); Iterator<Stage> stages = graph.getStages().iterator(); assertTrue(stages.next() instanceof Stage.Of); assertTrue(stages.next() instanceof Stage.Distinct); assertTrue(stages.next() instanceof Stage.Cancel); }
Example #30
Source File: ProcessorBuilderVerification.java From microprofile-reactive-streams-operators with Apache License 2.0 | 5 votes |
@Test public void viaBuilderFromDifferentReactiveStreamsImplementation() { Graph graph = graphFor(builder().via(Mocks.PROCESSOR_BUILDER)); assertEquals(graph.getStages().size(), 3); Iterator<Stage> stages = graph.getStages().iterator(); assertTrue(stages.next() instanceof Stage.Map); assertTrue(stages.next() instanceof Stage.Distinct); assertTrue(stages.next() instanceof Stage.Limit); }