Example usage for java.util.stream IntStream range

List of usage examples for java.util.stream IntStream range

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Introduction

In this page you can find the example usage for java.util.stream IntStream range.

Prototype

public static IntStream range(int startInclusive, int endExclusive)

Source Link

Document

Returns a sequential ordered IntStream from startInclusive (inclusive) to endExclusive (exclusive) by an incremental step of 1 .

Usage

From source file:com.epam.ta.reportportal.demo_data.DemoLogsService.java

List<Log> generateDemoLogs(String itemId, String status) {
    try (BufferedReader errorsBufferedReader = new BufferedReader(
            new InputStreamReader(errorLogsResource.getInputStream(), UTF_8));
            BufferedReader demoLogsBufferedReader = new BufferedReader(
                    new InputStreamReader(demoLogs.getInputStream(), UTF_8))) {
        String error = errorsBufferedReader.lines().collect(Collectors.joining("\n"));
        List<String> logMessages = demoLogsBufferedReader.lines().collect(toList());
        int t = random.nextInt(30);
        List<Log> logs = IntStream.range(1, t + 1).mapToObj(it -> {
            Log log = new Log();
            log.setLevel(logLevel());//from www .  ja va  2s.c om
            log.setLogTime(new Date());
            log.setTestItemRef(itemId);
            log.setLogMsg(logMessages.get(random.nextInt(logMessages.size())));
            return log;
        }).collect(toList());
        if (FAILED.name().equals(status)) {
            String file = dataStorage.saveData(
                    new BinaryData(IMAGE_PNG_VALUE, img.contentLength(), img.getInputStream()), "file");
            Log log = new Log();
            log.setLevel(ERROR);
            log.setLogTime(new Date());
            log.setTestItemRef(itemId);
            log.setLogMsg(error);
            final BinaryContent binaryContent = new BinaryContent(file, file, IMAGE_PNG_VALUE);
            log.setBinaryContent(binaryContent);
            logs.add(log);
        }
        return logRepository.save(logs);
    } catch (IOException e) {
        throw new ReportPortalException("Unable to generate demo logs", e);
    }
}

From source file:org.apache.bookkeeper.stream.storage.impl.sc.DefaultStorageContainerControllerTest.java

private static Set<BookieSocketAddress> newCluster(int numServers) {
    Set<BookieSocketAddress> cluster = IntStream.range(0, numServers)
            .mapToObj(idx -> new BookieSocketAddress("127.0.0.1", 4181 + idx)).collect(Collectors.toSet());
    return ImmutableSet.copyOf(cluster);
}

From source file:alfio.manager.EventNameManager.java

private String generateRandomName() {
    return IntStream.range(0, 5).mapToObj(i -> RandomStringUtils.randomAlphanumeric(15)).filter(this::isUnique)
            .limit(1).findFirst().orElse("");
}

From source file:nova.core.util.RayTracer.java

/**
 * Check all blocks that are in a line//from w  w w  .jav  a  2s.  c o m
 * @return The blocks ray traced in the order from closest to furthest.
 */
public Stream<RayTraceBlockResult> rayTraceBlocks(World world) {
    //All relevant blocks
    return rayTraceBlocks(
            IntStream.range(0, (int) distance + 1).mapToObj(i -> ray.origin.add(ray.dir.scalarMultiply(i)))
                    .flatMap(vec -> Arrays.stream(Direction.VALID_DIRECTIONS)
                            .map(direction -> Vector3DUtil.floor(vec.add(direction.toVector())))) //Cover a larger area to be safe
                    .distinct().map(world::getBlock).filter(Optional::isPresent).map(Optional::get));
}

From source file:es.uvigo.ei.sing.laimages.core.operations.Interpolator.java

private static double[][] calculateNewValues(double[][] data, int interpolationLevel) {
    final int initialRows = data.length;
    final int initialColumns = data[0].length;

    final BivariateGridInterpolator interpolator = new BilinearInterpolator();
    final BivariateFunction function = interpolator.interpolate(
            IntStream.range(0, initialRows).asDoubleStream().toArray(),
            IntStream.range(0, initialColumns).asDoubleStream().toArray(), data);

    final int newNumRows = CALCULATE_SIZE.applyAsInt(initialRows, interpolationLevel);
    final int newNumColumns = CALCULATE_SIZE.applyAsInt(initialColumns, interpolationLevel);

    final double[][] newValues = new double[newNumRows][newNumColumns];

    final double xFactor = ((double) initialRows - 1d) / ((double) newNumRows - 1d);
    final double yFactor = ((double) initialColumns - 1d) / ((double) newNumColumns - 1d);
    for (int i = 0; i < newValues.length; i++) {
        for (int j = 0; j < newValues[i].length; j++) {
            newValues[i][j] = function.value((double) i * xFactor, (double) j * yFactor);
        }//from   ww  w .  j a  va 2 s  .  co m
    }

    return newValues;
}

From source file:org.lenskit.pf.PMFModel.java

public void initialize(double weightShpPrior, double activityShpPrior, double meanActivityPrior,
        int userOrItemNum, int featureCount, double maxOffsetShp, double maxOffsetRte, Random random) {
    final double activityRte = activityShpPrior + featureCount;
    PMFModel model = IntStream.range(0, userOrItemNum).parallel().mapToObj(e -> {
        ModelEntry entry = new ModelEntry(e, featureCount, weightShpPrior, activityShpPrior, meanActivityPrior);
        for (int k = 0; k < featureCount; k++) {
            double valueShp = weightShpPrior + maxOffsetShp * random.nextDouble();
            double valueRte = activityShpPrior + maxOffsetRte * random.nextDouble();
            entry.setWeightShpEntry(k, valueShp);
            entry.setWeightRteEntry(k, valueRte);
        }//  ww w . j  a va2s  .  c om
        double activityShp = activityShpPrior + maxOffsetShp * random.nextDouble();
        entry.setActivityRte(activityRte);
        entry.setActivityShp(activityShp);
        return entry;
    }).collect(new PMFModelCollector());
    addAll(model);
}

From source file:com.github.robozonky.app.version.UpdateMonitor.java

static VersionIdentifier parseNodeList(final NodeList nodeList) {
    final SortedSet<String> versions = IntStream.range(0, nodeList.getLength()).mapToObj(nodeList::item)
            .map(Node::getTextContent)
            .collect(Collectors.toCollection(() -> new TreeSet<>(new VersionComparator().reversed())));
    // find latest stable
    final String firstStable = UpdateMonitor.findFirstStable(versions);
    // and check if it is followed by any other unstable versions
    final String first = versions.first();
    if (Objects.equals(first, firstStable)) {
        return new VersionIdentifier(firstStable);
    } else {/*from   w w w . j a  v a 2s.c  o m*/
        return new VersionIdentifier(firstStable, first);
    }
}

From source file:org.gradoop.flink.model.impl.operators.matching.single.cypher.planning.queryplan.unary.ProjectEmbeddingsNode.java

@Override
protected EmbeddingMetaData computeEmbeddingMetaData() {
    final EmbeddingMetaData childMetaData = getChildNode().getEmbeddingMetaData();

    projectionKeys.sort(//w  w w.j a  v a 2s.c  o m
            Comparator.comparingInt(key -> childMetaData.getPropertyColumn(key.getLeft(), key.getRight())));

    EmbeddingMetaData embeddingMetaData = new EmbeddingMetaData();

    childMetaData.getVariables().forEach(var -> embeddingMetaData.setEntryColumn(var,
            childMetaData.getEntryType(var), childMetaData.getEntryColumn(var)));

    IntStream.range(0, projectionKeys.size()).forEach(i -> embeddingMetaData
            .setPropertyColumn(projectionKeys.get(i).getLeft(), projectionKeys.get(i).getRight(), i));

    return embeddingMetaData;
}

From source file:org.apache.samza.tools.benchmark.SystemConsumerBench.java

Set<SystemStreamPartition> createSSPs(String systemName, String physicalStreamName, int startPartition,
        int endPartition) {
    return IntStream.range(startPartition, endPartition)
            .mapToObj(x -> new SystemStreamPartition(systemName, physicalStreamName, new Partition(x)))
            .collect(Collectors.toSet());
}

From source file:nl.salp.warcraft4j.dev.casc.dbc.DbcFilenameGenerator.java

public void execute() {
    int cores = 32;
    int generators = 1;
    int consumers = cores - generators;

    ExecutorService executorService = Executors.newFixedThreadPool(cores);
    Generator generator = new Generator(CHARS, maxLength);
    /*//from w ww  .ja  v  a2 s  . c  o m
    IntStream.range(0, consumers).forEach(i -> executorService.execute(() -> {
    LOGGER.debug("Started consumer {}", i);
    Consumer<String> consumer = this.consumer.get();
    String val = null;
    //long tryCount = 0;
    while (generator.isAvailable() || !queue.isEmpty()) {
        while (val == null && (generator.isAvailable() || !queue.isEmpty())) {
            //tryCount++;
            try {
                val = queue.poll(10, TimeUnit.MILLISECONDS);
            } catch (InterruptedException e) {
            }
            //if (tryCount % 1000 == 0) {
            //    LOGGER.debug("Starvation for consumer {} with {} tries", i);
            //}
        }
        if (val != null) {
            //tryCount = 0;
            consumer.accept(val);
            val = null;
        }
    }
    LOGGER.debug("Shutting down consumer {}", i);
    }));
    */
    IntStream.range(0, generators).forEach(i -> executorService.execute(() -> {
        LOGGER.debug("Started generator {}", i);
        while (generator.isAvailable()) {
            String value = generator.next();
            //add(format(FORMAT_DBC, value));
            //add(format(FORMAT_DB2, value));
        }
        LOGGER.debug("Shutting down generator {}", i);
    }));

    LOGGER.debug("Done...");
    executorService.shutdown();
}