Example usage for com.google.common.collect Iterables size

Introduction

In this page you can find the example usage for com.google.common.collect Iterables size.

Prototype

public static int size(Iterable<?> iterable)

Source Link

Document

Returns the number of elements in iterable .

Usage

From source file:org.eclipse.osee.executor.admin.WorkUtility.java

public static <INPUT, OUTPUT> List<Callable<Collection<OUTPUT>>> partitionWork(Iterable<INPUT> work,
        PartitionFactory<INPUT, OUTPUT> factory) throws Exception {
    List<Callable<Collection<OUTPUT>>> callables = new LinkedList<Callable<Collection<OUTPUT>>>();
    int size = Iterables.size(work);
    if (size > 0) {
        int partitionSize = Math.max(1, size / NUM_PARTITIONS);

        List<INPUT> subList = new LinkedList<INPUT>();

        int index = 0;

        Iterator<INPUT> iterator = work.iterator();
        while (iterator.hasNext()) {
            subList.add(iterator.next());

            if (index != 0 && partitionSize != 0 && (index % partitionSize == 0)) {
                Callable<Collection<OUTPUT>> worker = factory.createWorker(subList);
                callables.add(worker);/* ww  w.ja v  a 2 s  . c o m*/
                subList = new LinkedList<INPUT>();
            }
            index++;
        }
        // Anything left over ?
        if (!subList.isEmpty()) {
            Callable<Collection<OUTPUT>> worker = factory.createWorker(subList);
            callables.add(worker);
        }
    }
    return callables;
}

From source file:playground.michalm.taxi.util.TaxicabUtils.java

public static int countVehicles(Iterable<? extends Vehicle> vehicles, Predicate<Vehicle> predicate) {
    return Iterables.size(Iterables.filter(vehicles, predicate));
}

From source file:org.jclouds.openstack.nova.v2_0.domain.zonescoped.RegionAndId.java

public static RegionAndId fromSlashEncoded(String id) {
    Iterable<String> parts = Splitter.on('/').split(checkNotNull(id, "id"));
    checkArgument(Iterables.size(parts) == 2, "id must be in format regionId/id");
    return new RegionAndId(Iterables.get(parts, 0), Iterables.get(parts, 1));
}

From source file:springfox.documentation.spring.web.plugins.DuplicateGroupsDetector.java

public static void ensureNoDuplicateGroups(List<DocumentationPlugin> allPlugins) throws IllegalStateException {
    Multimap<String, DocumentationPlugin> plugins = Multimaps.index(allPlugins, byGroupName());
    Iterable<String> duplicateGroups = from(plugins.asMap().entrySet()).filter(duplicates())
            .transform(toGroupNames());// w  w w. ja va  2  s.  co m
    if (Iterables.size(duplicateGroups) > 0) {
        throw new IllegalStateException(String.format(
                "Multiple Dockets with the same group name are not supported. "
                        + "The following duplicate groups were discovered. %s",
                Joiner.on(',').join(duplicateGroups)));
    }
}

From source file:org.jclouds.aliyun.ecs.compute.functions.internal.OperatingSystems.java

private static String parseVersion(Image image) {
    String sequence = image.osName().trim().replaceAll("\\s+", " ");
    int offset = 2;
    if (isWindows(image)) {
        sequence = image.platform();/*from w  ww. j  a  v  a 2s  .co  m*/
        offset = 1;
    }
    Iterable<String> splitted = Splitter.on(" ").split(sequence);
    return Iterables.get(splitted, Iterables.size(splitted) - offset);
}

From source file:co.cask.cdap.logging.gateway.handlers.FormattedLogEvent.java

public static LogOffset parseLogOffset(String offsetStr) {
    if (offsetStr.isEmpty()) {
        return LogOffset.LATEST_OFFSET;
    }/*from  w w  w.j a v  a2s. c  om*/

    Iterable<String> splits = Splitter.on(SEPARATOR).split(offsetStr);
    Preconditions.checkArgument(Iterables.size(splits) == 2, "Invalid offset provided: %s", offsetStr);

    return new LogOffset(Long.valueOf(Iterables.get(splits, 0)), Long.valueOf(Iterables.get(splits, 1)));
}

From source file:net.sourceforge.cilib.util.selection.WeightedSelection.java

private static <T> WeightedObject[] copyOfInternal(Iterable<T> iterable) {
    checkArgument(Iterables.size(iterable) >= 1,
            "Attempting to create a " + "selection on an empty collection is not valid.");
    List<T> list = Lists.newArrayList(iterable);
    List<WeightedObject> result = Lists.newArrayListWithExpectedSize(list.size());
    for (T t : list) {
        result.add(new WeightedObject(t, 0.0));
    }/*from  w  w w .j  a v a2 s  . co m*/
    return result.toArray(new WeightedObject[] {});
}

From source file:sf.net.experimaestro.utils.graphs.Sort.java

/**
 * Topological sort of a set of nodes//from ww  w.j a v a2 s.c  o  m
 *
 * @param nodes The nodes to be sorted
 * @return An ordered list of nodes
 */
static public <T extends Node> ArrayList<T> topologicalSort(List<T> nodes) {
    ArrayList<T> ordered = new ArrayList<>();
    HashSet<NodeRef<T>> dandling = new HashSet<>();

    Map<NodeRef<T>, MutableInt> remaining = new HashMap<>();
    for (Node node : nodes) {
        final Iterable<? extends Node> children = node.getChildren();
        int size = Iterables.size(children);
        if (size == 0)
            dandling.add(new NodeRef(node));
        else
            remaining.put(new NodeRef(node), new MutableInt(size));
    }

    while (!remaining.isEmpty() || !dandling.isEmpty()) {
        if (dandling.isEmpty())
            throw new XPMRuntimeException("Graph contains cycle");

        HashSet<NodeRef<T>> newDandling = new HashSet<>();
        for (NodeRef<T> ref : dandling) {
            ordered.add(ref.node);
            remaining.remove(ref);
        }

        for (NodeRef<T> ref : dandling) {
            for (Node parent : ref.node.getParents()) {
                final MutableInt children = remaining.get(new NodeRef<>(parent));
                children.decrement();
                assert children.intValue() >= 0;
                if (children.intValue() == 0)
                    newDandling.add(new NodeRef(parent));
            }

        }
        dandling = newDandling;
    }

    return ordered;

}

From source file:org.janusgraph.testutil.JanusGraphAssert.java

public static int size(Object obj) {
    Preconditions.checkArgument(obj != null);
    if (obj instanceof Traversal)
        return size(((Traversal) obj).toList());
    else if (obj instanceof Collection)
        return ((Collection) obj).size();
    else if (obj instanceof Iterable)
        return Iterables.size((Iterable) obj);
    else if (obj instanceof Iterator)
        return Iterators.size((Iterator) obj);
    else if (obj.getClass().isArray())
        return Array.getLength(obj);
    throw new IllegalArgumentException("Cannot determine size of: " + obj);
}

From source file:com.thinkbiganalytics.security.service.user.UserModelTransform.java

/**
 * Transforms Metadata groups to Security groups.
 *
 * @return the Security groups//  w w w.  j av  a  2 s.  co  m
 */
@Nonnull
public static Function<com.thinkbiganalytics.metadata.api.user.UserGroup, UserGroup> toGroupPrincipal() {
    return (com.thinkbiganalytics.metadata.api.user.UserGroup group) -> {
        final UserGroup principal = new UserGroup();
        principal.setDescription(group.getDescription());
        principal.setMemberCount(Iterables.size(group.getGroups()) + Iterables.size(group.getUsers()));
        principal.setTitle(group.getTitle());
        principal.setSystemName(group.getSystemName());
        return principal;
    };
}