Examples with Spliterator java.util.Spliterator used on opensource projects

Example 96 with Spliterator

use of java.util.Spliterator in project j2cl by google.

the class StreamImpl method flatMapToInt.

@Override
public IntStream flatMapToInt(Function<? super T, ? extends IntStream> mapper) {
    throwIfTerminated();
    final Spliterator<? extends IntStream> spliteratorOfStreams = new MapToObjSpliterator<>(mapper, spliterator);
    AbstractIntSpliterator flatMapSpliterator = new Spliterators.AbstractIntSpliterator(Long.MAX_VALUE, 0) {

        IntStream nextStream;

        Spliterator.OfInt next;

        @Override
        public boolean tryAdvance(IntConsumer action) {
            // look for a new spliterator
            while (advanceToNextSpliterator()) {
                // if we have one, try to read and use it
                if (next.tryAdvance(action)) {
                    return true;
                } else {
                    nextStream.close();
                    nextStream = null;
                    // failed, null it out so we can find another
                    next = null;
                }
            }
            return false;
        }

        private boolean advanceToNextSpliterator() {
            while (next == null) {
                if (!spliteratorOfStreams.tryAdvance(n -> {
                    if (n != null) {
                        nextStream = n;
                        next = n.spliterator();
                    }
                })) {
                    return false;
                }
            }
            return true;
        }
    };
    return new IntStreamImpl(this, flatMapSpliterator);
}

Example 97 with Spliterator

use of java.util.Spliterator in project cx-flow by checkmarx-ltd.

the class AzureDevopsClient method getProjectIssueIds.

private List<String> getProjectIssueIds() throws IOException {
    log.info("Getting project issue IDs.");
    ObjectNode requestBody = objectMapper.createObjectNode();
    // WIQL language is read-only, so potential parameter injection shouldn't do any harm.
    String wiqlQuery = String.format("Select System.Id From WorkItems Where System.TeamProject = '%s'", projectName);
    requestBody.put("query", wiqlQuery);
    HttpEntity<ObjectNode> request = getRequestEntity(requestBody);
    String url = getResourceUrl("wit/wiql", null);
    ResponseEntity<ObjectNode> response = restClient.exchange(url, HttpMethod.POST, request, ObjectNode.class);
    ObjectNode responseBody = extractBody(response);
    List<String> result = StreamSupport.stream(responseBody.get("workItems").spliterator(), false).map(issue -> issue.get(ID_KEY).asText()).collect(Collectors.toList());
    log.info("Issues found: {}", result.size());
    return result;
}

Example 98 with Spliterator

use of java.util.Spliterator in project baremaps by baremaps.

the class PartitionedSpliteratorTest method trySplitWithNonEquivalentElementInStreamTest.

@Test
void trySplitWithNonEquivalentElementInStreamTest() {
    PartitionedSpliterator<Integer> stream = new PartitionedSpliterator<>(IntStream.range(0, 600).spliterator(), 250);
    Spliterator<Stream<Integer>> a = stream.trySplit();
    Spliterator<Stream<Integer>> b = stream.trySplit();
    Spliterator<Stream<Integer>> c = stream.trySplit();
    Spliterator<Stream<Integer>> d = stream.trySplit();
    AtomicInteger i = new AtomicInteger();
    a.forEachRemaining(s -> s.forEach(item -> {
        // cast necessary otherwise call is ambiguous
        assertEquals(i.get(), (long) item);
        i.getAndIncrement();
    }));
    b.forEachRemaining(s -> s.forEach(item -> {
        assertEquals(i.get(), (long) item);
        i.getAndIncrement();
    }));
    c.forEachRemaining(s -> s.forEach(item -> {
        assertEquals(i.get(), (long) item);
        i.getAndIncrement();
    }));
    d.forEachRemaining(s -> s.forEach(item -> fail()));
    stream.forEachRemaining(item -> fail());
    assertEquals(600, i.get());
}

Example 99 with Spliterator

use of java.util.Spliterator in project geotoolkit by Geomatys.

the class DistanceSpliteratorTest method testSegments.

private void testSegments(final CoordinateReferenceSystem crs, final boolean isOrthodromic) throws IOException, FactoryException {
    final DistanceSpliterator.Builder builder = DistanceSpliterator.builder().setCrs(crs);
    final UnaryOperator<Coordinate> pointTransformer = getTransformer(crs);
    final List<Segment> segments = Segment.loadTestData();
    for (Segment s : segments) {
        builder.setPolyline(new CoordinateArraySequence(new Coordinate[] { pointTransformer.apply(s.start), pointTransformer.apply(s.end) }, 2));
        final Spliterator.OfDouble ds = isOrthodromic ? builder.buildOrthodromic() : builder.buildLoxodromic();
        Assert.assertEquals("Returned spliterator is not of expected type", DistanceSpliterator.class, ds.getClass());
        boolean segmentComputed = ds.tryAdvance((double val) -> EngineTest.assertDistance(s, isOrthodromic, val));
        Assert.assertTrue("Segment length has not been computed", segmentComputed);
        ds.tryAdvance((double val) -> org.junit.Assert.fail("A second computing has been done, despite the fact that we've got only one segment."));
    }
}

Example 100 with Spliterator

use of java.util.Spliterator in project structure-project by wudskq.

the class IntPipeline method forEachWithCancel.

@Override
final void forEachWithCancel(Spliterator<Integer> spliterator, Sink<Integer> sink) {
    Spliterator.OfInt spl = adapt(spliterator);
    IntConsumer adaptedSink = adapt(sink);
    do {
    } while (!sink.cancellationRequested() && spl.tryAdvance(adaptedSink));
}