Examples with UnaryOperator java.util.function.UnaryOperator used on opensource projects

Example 6 with UnaryOperator

use of java.util.function.UnaryOperator in project grakn by graknlabs.

the class QueryVisitor method visitPropHas.

@Override
public UnaryOperator<VarPattern> visitPropHas(GraqlParser.PropHasContext ctx) {
    Label type = visitLabel(ctx.label());
    VarPattern relation = Optional.ofNullable(ctx.relation).map(this::getVariable).orElseGet(Graql::var);
    VarPattern resource = Optional.ofNullable(ctx.resource).map(this::getVariable).orElseGet(Graql::var);
    if (ctx.predicate() != null) {
        resource = resource.val(visitPredicate(ctx.predicate()));
    }
    VarPattern finalResource = resource;
    return var -> var.has(type, finalResource, relation);
}

Example 7 with UnaryOperator

use of java.util.function.UnaryOperator in project jdk8u_jdk by JetBrains.

the class SequentialOpTest method testLazy.

@SuppressWarnings({ "rawtypes", "unchecked" })
@Test(dataProvider = "StreamTestData<Integer>", dataProviderClass = StreamTestDataProvider.class, groups = { "serialization-hostile" })
public void testLazy(String name, TestData.OfRef<Integer> data) {
    Function<Integer, Integer> id = LambdaTestHelpers.identity();
    AtomicInteger counter = new AtomicInteger();
    Supplier<Stream<Integer>>[] suppliers = new Supplier[] { () -> data.stream(), () -> data.parallelStream() };
    UnaryOperator<Stream<Integer>>[] configs = new UnaryOperator[] { (UnaryOperator<Stream<Integer>>) s -> s.peek(e -> {
        counter.incrementAndGet();
    }), (UnaryOperator<Stream<Integer>>) s -> s.map(id).peek(e -> {
        counter.incrementAndGet();
    }).sequential().map(id), (UnaryOperator<Stream<Integer>>) s -> s.map(id).peek(e -> {
        counter.incrementAndGet();
    }).parallel().map(id), (UnaryOperator<Stream<Integer>>) s -> s.sequential().map(id).peek(e -> {
        counter.incrementAndGet();
    }).map(id), (UnaryOperator<Stream<Integer>>) s -> s.parallel().map(id).peek(e -> {
        counter.incrementAndGet();
    }).map(id) };
    for (int i = 0; i < suppliers.length; i++) {
        setContext("supplierIndex", i);
        Supplier<Stream<Integer>> supp = suppliers[i];
        for (int j = 0; j < configs.length; j++) {
            setContext("configIndex", j);
            UnaryOperator<Stream<Integer>> config = configs[j];
            counter.set(0);
            Stream<Integer> stream = config.apply(supp.get());
            assertEquals(0, counter.get());
            Iterator<Integer> iterator = stream.iterator();
            assertEquals(0, counter.get());
            if (iterator.hasNext())
                iterator.next();
            assertTrue(data.size() == 0 || counter.get() > 0);
            counter.set(0);
            stream = config.apply(supp.get());
            Spliterator<Integer> spliterator = stream.spliterator();
            assertEquals(0, counter.get());
            spliterator.forEachRemaining(e -> {
            });
            assertTrue(data.size() == 0 || counter.get() > 0);
        }
    }
}

Example 8 with UnaryOperator

use of java.util.function.UnaryOperator in project lucene-solr by apache.

the class JsonLoaderTest method testFewParentsJsonDoc.

public void testFewParentsJsonDoc() throws Exception {
    String json = PARENT_TWO_CHILDREN_JSON;
    SolrQueryRequest req;
    SolrQueryResponse rsp;
    BufferingRequestProcessor p;
    JsonLoader loader;
    {
        //multichild test case
        final boolean array = random().nextBoolean();
        StringBuilder b = new StringBuilder();
        if (array) {
            b.append("[");
        }
        final int passes = atLeast(2);
        for (int i = 1; i <= passes; i++) {
            b.append(json.replace("1", "" + i));
            if (array) {
                b.append(i < passes ? "," : "]");
            }
        }
        req = req(PARENT_TWO_CHILDREN_PARAMS);
        req.getContext().put("path", "/update/json/docs");
        rsp = new SolrQueryResponse();
        p = new BufferingRequestProcessor(null);
        loader = new JsonLoader();
        loader.load(req, rsp, new ContentStreamBase.StringStream(b.toString()), p);
        for (int i = 1; i <= passes; i++) {
            final int ii = i;
            UnaryOperator<String> s = (v) -> v.replace("1", "" + ii);
            final SolrInputDocument parent = p.addCommands.get(i - 1).solrDoc;
            assertOnlyValue(s.apply("1"), parent, "id");
            assertOnlyValue("i am the parent", parent, "name");
            assertOnlyValue("parent", parent, "cat");
            assertEquals(2, parent.getChildDocuments().size());
            {
                final SolrInputDocument child1 = parent.getChildDocuments().get(0);
                assertOnlyValue(s.apply("1.1"), child1, "id");
                assertOnlyValue(s.apply("i am the 1st child"), child1, "name");
                assertOnlyValue("child", child1, "cat");
            }
            {
                final SolrInputDocument child2 = parent.getChildDocuments().get(1);
                assertOnlyValue(s.apply("1.2"), child2, "id");
                assertOnlyValue("i am the 2nd child", child2, "name");
                assertOnlyValue("child", child2, "cat");
                assertEquals(1, child2.getChildDocuments().size());
                final SolrInputDocument grandChild = child2.getChildDocuments().get(0);
                assertOnlyValue(s.apply("1.2.1"), grandChild, "id");
                assertOnlyValue("i am the grandchild", grandChild, "name");
                assertOnlyValue("grandchild", grandChild, "cat");
            }
        }
    }
}

Example 9 with UnaryOperator

use of java.util.function.UnaryOperator in project trex-stateless-gui by cisco-system-traffic-generator.

the class MultiplierOption method buildUI.

/**
     * Build multiplier view UI
     *
     * @param title
     * @param group
     */
private void buildUI(String title, ToggleGroup group) {
    // add radio button
    selection = new RadioButton(title);
    selection.setToggleGroup(group);
    selection.selectedProperty().addListener((ObservableValue<? extends Boolean> observable, Boolean oldValue, Boolean newValue) -> {
        if (newValue) {
            multiplierSelectionEvent.onMultiplierSelect(type);
        }
        value.setDisable(!newValue);
    });
    setTooltip();
    getChildren().add(selection);
    MultiplierOption.setTopAnchor(selection, 15d);
    MultiplierOption.setLeftAnchor(selection, 0d);
    // text field
    value = new TextField();
    value.setPrefSize(120, 22);
    value.setDisable(true);
    value.addEventFilter(KeyEvent.KEY_RELEASED, multiplierSelectionEvent.validateInput());
    String regex = unitRegex();
    final UnaryOperator<TextFormatter.Change> keyPressFilter = c -> {
        String text = c.getControlNewText();
        if (text.matches(regex)) {
            return c;
        } else {
            return null;
        }
    };
    value.setTextFormatter(new TextFormatter<>(keyPressFilter));
    getChildren().add(value);
    MultiplierOption.setTopAnchor(value, 43d);
    MultiplierOption.setLeftAnchor(value, 0d);
    MultiplierOption.setBottomAnchor(value, 15d);
}

Example 10 with UnaryOperator

use of java.util.function.UnaryOperator in project algorithms by Iurii-Dziuban.

the class DefaultAndStaticInInterface method testDatePlusStream.

// --- End of Question 17.
// Java 8 certification Question 18.
/**
 * Which of the following statements can fill in the blank to make the code compile successfully? (Choose all that apply.)
 *
 *     Set[? extends RuntimeException] set = VALUE
 *
 *     A. new HashSet[? extends RuntimeException]();
 *     B. new HashSet<Exception>();
 *     C. new TreeSet<RuntimeException>();
 *     D. new TreeSet<NullPointerException>();
 *     E. None of the above
 *
 *     Answer: C,D . A is not possible on the right side of expression.
 *     B is not possible, cause Exception is higher in hierarchy
 */
// --- End of Question 18.
// Java 8 certification Question 19.
/**
 * Which of the following position a ResultSet cursor to a location immediately before the
 *     first row? (Choose all that apply.)
 *     A. rs.absolute(-1)
 *     B. rs.absolute(0)
 *     C. rs.absolute(1)
 *     D. rs.beforeFirst()
 *     E. rs.first()
 *     F. rs.next()
 *
 *     Answer: B, D. On scrollable ResultSet absolute -1 -> end row, 0 -> before first row, 1 -> the first row
 *     beforeFirst() is equivalent method
 */
// --- End of Question 19.
// Java 8 certification Question 20.
/**
 * Assume that today is June 1, 2016. What is the result of the following?
 */
@Test
public void testDatePlusStream() {
    LocalDate localDate = LocalDate.of(2016, 6, 1);
    Stream<LocalDate> s = Stream.of(localDate);
    UnaryOperator<LocalDate> u = l -> l;
    s.filter(l -> l != null).map(u).peek(System.out::println);
    assertThat(Stream.of(localDate).filter(l -> l != null).map(u).collect(Collectors.toList()).get(0)).isEqualTo(localDate);
}