Example usage for java.util Spliterators spliteratorUnknownSize

Introduction

In this page you can find the example usage for java.util Spliterators spliteratorUnknownSize.

Prototype

public static Spliterator.OfDouble spliteratorUnknownSize(PrimitiveIterator.OfDouble iterator,
        int characteristics) 

Source Link

Document

Creates a Spliterator.OfDouble using a given DoubleStream.DoubleIterator as the source of elements, with no initial size estimate.

Usage

From source file:com.ikanow.aleph2.search_service.elasticsearch.utils.ElasticsearchIndexUtils.java

/** Utility function to handle fields
 * TODO (ALEPH-14): need to be able to specify different options for different fields via columnar settings
 * @param mutable_mapping//from   www .j a va  2 s.  com
 * @param fielddata_info
 * @param mapper
 */
protected static void handleMappingFields(final ObjectNode mutable_mapping,
        final Optional<Tuple3<JsonNode, JsonNode, Boolean>> fielddata_info, final ObjectMapper mapper,
        final String index_type) {
    Optional.ofNullable(mutable_mapping.get("fields")).filter(j -> !j.isNull() && j.isObject()).ifPresent(j -> {
        StreamSupport.stream(Spliterators.spliteratorUnknownSize(j.fields(), Spliterator.ORDERED), false)
                .forEach(Lambdas.wrap_consumer_u(kv -> {
                    final ObjectNode mutable_o = (ObjectNode) kv.getValue();
                    setMapping(mutable_o, fielddata_info, mapper, index_type);
                }));
    });
}

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From source file:org.apache.wicket.MarkupContainer.java

/**
 * Returns a sequential {@code Stream} with the all children of this markup container as its
 * source. This stream does traverse the component tree.
 * //from w w  w  .ja  v  a  2  s  .  c  om
 * @return a sequential {@code Stream} over the all children of this markup container
 * @since 8.0
 */
@SuppressWarnings("unchecked")
public Stream<Component> streamChildren() {
    class ChildrenIterator<C> implements Iterator<C> {
        private Iterator<C> currentIterator;

        private Deque<Iterator<C>> iteratorStack = new ArrayDeque<>();

        private ChildrenIterator(Iterator<C> iterator) {
            currentIterator = iterator;
        }

        @Override
        public boolean hasNext() {
            if (!currentIterator.hasNext() && !iteratorStack.isEmpty()) {
                currentIterator = iteratorStack.pop();
            }
            return currentIterator.hasNext();
        }

        @Override
        public C next() {
            C child = currentIterator.next();
            if (child instanceof Iterable) {
                iteratorStack.push(currentIterator);
                currentIterator = ((Iterable<C>) child).iterator();
            }
            return child;
        }
    }
    return StreamSupport.stream(Spliterators.spliteratorUnknownSize(new ChildrenIterator<>(iterator()), 0),
            false);
}

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From source file:org.kie.workbench.common.dmn.backend.DMNMarshallerTest.java

@Test
public void test_function_java_WB_model() throws IOException {
    final DMNMarshaller m = getDMNMarshaller();

    @SuppressWarnings("unchecked")
    final Graph<?, Node<?, ?>> g = m.unmarshall(null, this.getClass().getResourceAsStream("/DROOLS-2372.dmn"));

    final Stream<Node<?, ?>> stream = StreamSupport
            .stream(Spliterators.spliteratorUnknownSize(g.nodes().iterator(), Spliterator.ORDERED), false);
    final Optional<Decision> wbDecision = stream.filter(n -> n.getContent() instanceof ViewImpl)
            .map(n -> (ViewImpl) n.getContent()).filter(n -> n.getDefinition() instanceof Decision)
            .map(n -> (Decision) n.getDefinition()).findFirst();

    wbDecision.ifPresent(d -> {// w ww  .ja v a  2s.  c  om
        assertTrue(d.getExpression() instanceof FunctionDefinition);
        final FunctionDefinition wbFunction = (FunctionDefinition) d.getExpression();

        //This is what the WB expects
        assertEquals(FunctionDefinition.Kind.JAVA, wbFunction.getKind());
    });

    final DMNRuntime runtime = roundTripUnmarshalMarshalThenUnmarshalDMN(
            this.getClass().getResourceAsStream("/DROOLS-2372.dmn"));
    final DMNModel dmnModel = runtime.getModels().get(0);

    final BusinessKnowledgeModelNode bkmNode = dmnModel.getBusinessKnowledgeModels().iterator().next();
    final org.kie.dmn.model.api.FunctionDefinition dmnFunction = bkmNode.getBusinessKnowledModel()
            .getEncapsulatedLogic();
    assertEquals(FunctionKind.JAVA, dmnFunction.getKind());
}

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From source file:com.joyent.manta.client.MantaClient.java

/**
 * Gets all of the Manta jobs' IDs as a real-time {@link Stream} from
 * the Manta API. <strong>Make sure to close this stream when you are done with
 * otherwise the HTTP socket will remain open.</strong>
 *
 * @return a stream with all of the job IDs (actually all that Manta will give us)
 *///from  w  w  w  . j  av  a 2  s . c  o m
public Stream<UUID> getAllJobIds() {
    final String path = String.format("%s/jobs", config.getMantaHomeDirectory());

    final MantaDirectoryListingIterator itr = new MantaDirectoryListingIterator(path, httpHelper, MAX_RESULTS);

    danglingStreams.add(itr);

    Stream<Map<String, Object>> backingStream = StreamSupport
            .stream(Spliterators.spliteratorUnknownSize(itr, Spliterator.ORDERED | Spliterator.NONNULL), false);

    return backingStream.map(item -> {
        final String id = Objects.toString(item.get("name"));
        return UUID.fromString(id);
    });
}

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From source file:org.kie.workbench.common.dmn.backend.DMNMarshallerTest.java

private static Node<View, ?> nodeOfDefinition(final Iterator<Node<View, ?>> nodesIterator, final Class aClass) {
    return StreamSupport.stream(Spliterators.spliteratorUnknownSize(nodesIterator, Spliterator.NONNULL), false)
            .filter(node -> aClass.isInstance(node.getContent().getDefinition())).findFirst().get();
}

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