Example usage for java.util Iterator forEachRemaining

Introduction

In this page you can find the example usage for java.util Iterator forEachRemaining.

Prototype

default void forEachRemaining(Consumer<? super E> action) 

Source Link

Document

Performs the given action for each remaining element until all elements have been processed or the action throws an exception.

Usage

From source file:net.csthings.cassinate.CassinateHelper.java

public void truncateAllTables(String keyspaceName) {
    Iterator<TableMetadata> tables = cluster.getMetadata().getKeyspace(keyspaceName).getTables().iterator();
    LOG.debug("Truncating tables in {}", keyspaceName);
    tables.forEachRemaining(
            t -> session.executeAsync(String.format("TRUNCATE TABLE %s.%s ;", keyspaceName, t.getName())));
}

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From source file:net.csthings.cassinate.CassinateHelper.java

public void dropAllTables(String keyspaceName) {
    Iterator<TableMetadata> tables = cluster.getMetadata().getKeyspace(keyspaceName).getTables().iterator();
    LOG.debug("Truncating tables: {}", tables.toString());
    tables.forEachRemaining(
            t -> session.executeAsync(String.format("DROP TABLE %s.%s ;", keyspaceName, t.getName())));
}

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From source file:info.archinnov.achilles.it.TestNativeQueries.java

@Test
public void should_iterate_regular_typed_query() throws Exception {
    //Given/*from w  w w.ja v a 2s.  co  m*/
    final Map<String, Object> values = new HashMap<>();
    final long id = RandomUtils.nextLong(0L, Long.MAX_VALUE);
    values.put("id", id);
    values.put("date1", "'2015-10-01 00:00:00+0000'");
    values.put("date2", "'2015-10-02 00:00:00+0000'");
    values.put("date3", "'2015-10-03 00:00:00+0000'");
    values.put("date4", "'2015-10-04 00:00:00+0000'");
    values.put("date5", "'2015-10-05 00:00:00+0000'");
    values.put("date6", "'2015-10-06 00:00:00+0000'");
    values.put("date7", "'2015-10-07 00:00:00+0000'");
    values.put("date8", "'2015-10-08 00:00:00+0000'");
    values.put("date9", "'2015-10-09 00:00:00+0000'");
    scriptExecutor.executeScriptTemplate("SimpleEntity/insert_many_rows.cql", values);

    final SimpleStatement statement = new SimpleStatement("SELECT * FROM simple WHERE id = :id LIMIT 100");

    //When
    final Iterator<TypedMap> iter = manager.query().nativeQuery(statement, id).iterator();

    //Then
    final AtomicBoolean foundEntity = new AtomicBoolean(false);
    iter.forEachRemaining(instance -> {
        foundEntity.getAndSet(true);
        assertThat(instance).isNotNull();
        assertThat(instance.<String>getTyped("value")).contains("id - date");
    });
    assertThat(foundEntity.get()).isTrue();
}

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From source file:net.anthavio.vinbudin.vui.ChatUI.java

private void refreshMessageBoard() {
    SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy 'at' HH:mm z");
    Iterator<ChatMessage> messages = service.messagesIterator();
    StringBuilder sb = new StringBuilder();
    messages.forEachRemaining(message -> {
        sb.append(sdf.format(message.getDate())).append(", ").append(message.getAuthor().getName()).append(" [")
                .append(message.getAuthor().getFrom().name()).append("]: ").append(message.getText())
                .append("\n");
    });/*from www . j a va 2 s .c  om*/
    labelBoard.setValue(sb.toString());
}

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From source file:info.archinnov.achilles.it.TestTypedQueries.java

@Test
public void should_iterate_regular_typed_query() throws Exception {
    //Given/*from w ww  .ja  v  a  2  s . c o m*/
    final Map<String, Object> values = new HashMap<>();
    final long id = RandomUtils.nextLong(0L, Long.MAX_VALUE);
    values.put("id", id);
    values.put("date1", "'2015-10-01 00:00:00+0000'");
    values.put("date2", "'2015-10-02 00:00:00+0000'");
    values.put("date3", "'2015-10-03 00:00:00+0000'");
    values.put("date4", "'2015-10-04 00:00:00+0000'");
    values.put("date5", "'2015-10-05 00:00:00+0000'");
    values.put("date6", "'2015-10-06 00:00:00+0000'");
    values.put("date7", "'2015-10-07 00:00:00+0000'");
    values.put("date8", "'2015-10-08 00:00:00+0000'");
    values.put("date9", "'2015-10-09 00:00:00+0000'");
    scriptExecutor.executeScriptTemplate("SimpleEntity/insert_many_rows.cql", values);

    final SimpleStatement statement = new SimpleStatement("SELECT * FROM simple WHERE id = :id LIMIT 100");

    //When
    final Iterator<SimpleEntity> iter = manager.query().typedQueryForSelect(statement, id).iterator();

    //Then
    final AtomicBoolean foundEntity = new AtomicBoolean(false);
    iter.forEachRemaining(instance -> {
        foundEntity.getAndSet(true);
        assertThat(instance).isNotNull();
        assertThat(instance.getValue()).contains("id - date");
    });

    assertThat(foundEntity.get()).isTrue();
}

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From source file:com.ikanow.aleph2.graph.titan.utils.TitanGraphBuildingUtils.java

/** Tidy up duplicates created because of the lack of consistency in deduplication (+lack of upsert!)
 * @param tx//ww w.  ja v  a  2 s. c  o  m
 * @param grouped_vertices
 * @param mutable_stats_per_batch
 */
public static void mergeDuplicates(final TitanTransaction tx, final String bucket_path,
        final Map<JsonNode, List<Vertex>> grouped_vertices, final MutableStatsBean mutable_stats_per_batch) {
    grouped_vertices.entrySet().stream().filter(kv -> !kv.getValue().isEmpty()).forEach(kv -> {

        final Stream<Vertex> vertices = kv.getValue().stream().sorted((a, b) -> postProcSortingMethod(a, b));
        final Iterator<Vertex> it = vertices.iterator();
        if (it.hasNext()) {
            final long matches_found = kv.getValue().size() - 1;
            mutable_stats_per_batch.vertex_matches_found += matches_found; //(#vertices)
            if (matches_found > 0) {
                mutable_stats_per_batch.vertices_updated++;//(#keys)
            }

            final Vertex merge_into = it.next();
            if (it.hasNext()) {
                mutable_stats_per_batch.vertices_updated++;
            }
            it.forEachRemaining(v -> {
                // special case: add all buckets, update times etc
                Optionals.streamOf(v.properties(GraphAnnotationBean.a2_p), false).map(vp -> vp.value())
                        .forEach(val -> merge_into.property(Cardinality.set, GraphAnnotationBean.a2_p, val));
                merge_into.property(GraphAnnotationBean.a2_tm, new Date().getTime());

                // copy vertex properties into the "merge_into" vertex
                Optionals.streamOf(v.properties(), false).filter(vp -> !_RESERVED_PROPERTIES.contains(vp.key())) // (ie don't overwrite system properties)
                        .forEach(vp -> merge_into.property(vp.key(), vp.value()));

                // OK edges are the difficult bit
                mergeEdges(bucket_path, Direction.IN, false, merge_into, v, mutable_stats_per_batch);
                mergeEdges(bucket_path, Direction.OUT, false, merge_into, v, mutable_stats_per_batch);

                // (finally remove this vertex)
                // (previously - commened out code, we just removed the bucket, but since we're trying to remove singletons, we'll always delete)
                //Optionals.streamOf(v.properties(GraphAnnotationBean.a2_p), false).filter(vp -> bucket_path.equals(vp.value())).forEach(vp -> vp.remove());
                //if (!v.properties(GraphAnnotationBean.a2_p).hasNext()) v.remove();
                v.remove();
            });
        }

    });
}

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From source file:org.apache.bookkeeper.common.util.TestBackoff.java

@Test
public void testDecorrelatedJittered() throws Exception {
    long startMs = ThreadLocalRandom.current().nextLong(1L, 1000L);
    long maxMs = ThreadLocalRandom.current().nextLong(startMs, startMs * 2);
    Stream<Long> backoffs = Backoff.decorrelatedJittered(startMs, maxMs).limit(10);
    Iterator<Long> backoffIter = backoffs.iterator();
    assertTrue(backoffIter.hasNext());/*from  w w  w. jav a 2s  . c o  m*/
    assertEquals(startMs, backoffIter.next().longValue());
    AtomicLong prevMs = new AtomicLong(startMs);
    backoffIter.forEachRemaining(backoffMs -> {
        assertTrue(backoffMs >= startMs);
        assertTrue(backoffMs <= prevMs.get() * 3);
        assertTrue(backoffMs <= maxMs);
        prevMs.set(backoffMs);
    });
}

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From source file:org.apache.bookkeeper.common.util.TestBackoff.java

@Test
public void testDecorrelatedJitteredPolicy() throws Exception {
    long startMs = ThreadLocalRandom.current().nextLong(1L, 1000L);
    long maxMs = ThreadLocalRandom.current().nextLong(startMs, startMs * 2);
    Stream<Long> backoffs = Backoff.Jitter.of(DECORRELATED, startMs, maxMs, 10).toBackoffs();
    Iterator<Long> backoffIter = backoffs.iterator();
    assertTrue(backoffIter.hasNext());/* w  w  w.  j  a v  a2 s  .  c  o m*/
    assertEquals(startMs, backoffIter.next().longValue());
    AtomicLong prevMs = new AtomicLong(startMs);
    backoffIter.forEachRemaining(backoffMs -> {
        assertTrue(backoffMs >= startMs);
        assertTrue(backoffMs <= prevMs.get() * 3);
        assertTrue(backoffMs <= maxMs);
        prevMs.set(backoffMs);
    });
}

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From source file:org.apache.jena.sparql.function.library.strjoin.java

@Override
public final NodeValue exec(List<NodeValue> args) {
    if (args == null)
        // The contract on the function interface is that this should not happen.
        throw new ARQInternalErrorException(Lib.className(this) + ": Null args list");

    Iterator<NodeValue> iter = args.iterator();
    String sep = iter.next().asString();

    List<String> x = new ArrayList<>();
    iter.forEachRemaining(arg -> x.add(arg.asString()));

    return NodeValue.makeString(String.join(sep, x));
}

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From source file:org.apache.tinkerpop.gremlin.groovy.engine.GremlinExecutorOverGraphTest.java

@Test
@LoadGraphWith(LoadGraphWith.GraphData.MODERN)
public void shouldAllowTraversalToIterateInDifferentThreadThanOriginallyEvaluatedWithAutoCommit()
        throws Exception {
    // this test sort of simulates Gremlin Server interaction where a Traversal is eval'd in one Thread, but
    // then iterated in another.  note that Gremlin Server configures the script engine to auto-commit
    // after evaluation.  this basically tests the state of the Gremlin Server GremlinExecutor when
    // being used in sessionless mode
    final ExecutorService evalExecutor = Executors.newSingleThreadExecutor(testingThreadFactory);
    final GremlinExecutor gremlinExecutor = GremlinExecutor.build().afterSuccess(b -> {
        final GraphTraversalSource g = (GraphTraversalSource) b.get("g");
        if (g.getGraph().features().graph().supportsTransactions())
            g.tx().commit();//  w w  w  .  ja v  a  2  s.  c om
    }).executorService(evalExecutor).create();

    final Map<String, Object> bindings = new HashMap<>();
    bindings.put("g", g);

    final AtomicInteger vertexCount = new AtomicInteger(0);

    final ExecutorService iterationExecutor = Executors.newSingleThreadExecutor(testingThreadFactory);
    gremlinExecutor.eval("g.V().out()", bindings).thenAcceptAsync(o -> {
        final Iterator itty = (Iterator) o;
        itty.forEachRemaining(v -> vertexCount.incrementAndGet());
    }, iterationExecutor).join();

    assertEquals(6, vertexCount.get());

    gremlinExecutor.close();
    evalExecutor.shutdown();
    evalExecutor.awaitTermination(30000, TimeUnit.MILLISECONDS);
    iterationExecutor.shutdown();
    iterationExecutor.awaitTermination(30000, TimeUnit.MILLISECONDS);
}

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