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

Introduction

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

Prototype

public static boolean isEmpty(Iterable<?> iterable)

Source Link

Document

Determines if the given iterable contains no elements.

Usage

From source file:org.apache.beam.sdk.util.state.CopyOnAccessInMemoryStateInternals.java

public boolean isEmpty() {
    return Iterables.isEmpty(table.values());
}

From source file:com.palantir.common.collect.IterableView.java

public boolean isEmpty() {
    return Iterables.isEmpty(delegate());
}

From source file:org.apache.abdera2.common.http.EntityTag.java

private static boolean empty(Iterable<EntityTag> tags) {
    return Iterables.isEmpty(tags);
}

From source file:org.obm.sync.resource.ResourceServlet.java

@VisibleForTesting
String getResourceICS(String resourceEmail, SyncRange syncRange) throws ServerFault {
    Collection<Event> resourceEvents = calendarBinding.getResourceEvents(resourceEmail, new Date(), syncRange);

    if (Iterables.isEmpty(resourceEvents)) {
        return null;
    }//from   w  ww .  j  a  v a2 s. com

    return this.ical4jHelper.buildIcsWithTimeZoneOnDtStart(null, resourceEvents, null);
}

From source file:org.eclipse.sirius.diagram.ui.internal.edit.policies.RegionCollapseAwarePropertyHandlerEditPolicy.java

private Command getLayoutConstraintsCommand(boolean collapsed, Command initialCommand) {
    if (getHost() instanceof IResizableCompartmentEditPart
            && getHost().getParent() instanceof AbstractDiagramElementContainerEditPart) {
        AbstractDiagramElementContainerEditPart regionPart = (AbstractDiagramElementContainerEditPart) getHost()
                .getParent();/*from w  ww . j av a  2 s. co m*/
        View notationView = regionPart.getNotationView();
        if (notationView instanceof Node && ((Node) notationView).getLayoutConstraint() instanceof Size
                && notationView.getElement() instanceof DDiagramElementContainer) {
            TransactionalEditingDomain editingDomain = getEditingDomain();
            CompositeTransactionalCommand ctc = new CompositeTransactionalCommand(editingDomain,
                    collapsed ? Messages.RegionCollapseAwarePropertyHandlerEditPolicy_collapseRegionCommandLabel
                            : Messages.RegionCollapseAwarePropertyHandlerEditPolicy_expandRegionCommandLabel);
            Command result = new ICommandProxy(ctc);
            if (initialCommand != null) {
                ctc.add(new CommandProxy(initialCommand));
            }

            Size size = (Size) ((Node) notationView).getLayoutConstraint();
            DDiagramElementContainer ddec = (DDiagramElementContainer) notationView.getElement();
            Iterable<AbsoluteBoundsFilter> boundsFilters = Iterables.filter(ddec.getGraphicalFilters(),
                    AbsoluteBoundsFilter.class);
            AbsoluteBoundsFilter expandedBoundsMarker = Iterables.isEmpty(boundsFilters) ? null
                    : boundsFilters.iterator().next();

            // Update GMF size
            Dimension newGmfSize = new Dimension(size.getWidth(), size.getHeight());
            int parentStackDirection = regionPart.getParentStackDirection();
            if (parentStackDirection == PositionConstants.NORTH_SOUTH) {
                if (!collapsed) {
                    newGmfSize.setHeight(expandedBoundsMarker == null ? -1 : expandedBoundsMarker.getHeight());
                } else if (size.getHeight() != -1) {
                    newGmfSize.setHeight(LayoutUtils.COLLAPSED_VERTICAL_REGION_HEIGHT);
                }
            } else if (parentStackDirection == PositionConstants.EAST_WEST) {
                if (!collapsed) {
                    newGmfSize.setWidth(expandedBoundsMarker == null ? -1 : expandedBoundsMarker.getWidth());
                } else if (!isTruncatedLabel(regionPart)) {
                    // Change the GMF width only when label is not truncated
                    // to avoid to have a collapsed Region bigger than the
                    // expanded size (resized by the user).
                    // Do not specify a collapsed width as it will depend on
                    // the label size.
                    newGmfSize.setWidth(-1);
                }
            }

            SetBoundsCommand setBoundsCommand = new SetBoundsCommand(editingDomain,
                    Messages.RegionCollapseAwarePropertyHandlerEditPolicy_gmfSizeUpdateCommandLabel,
                    new EObjectAdapter(notationView), newGmfSize);
            ctc.add(setBoundsCommand);

            // Remember expanded size: create/update/remove an
            // AbsoluteBoundsFilter marker on the DDiagramElement.
            if (collapsed) {
                if (expandedBoundsMarker != null) {
                    ctc.add(new GMFCommandWrapper(editingDomain,
                            new SetCommand(editingDomain, expandedBoundsMarker,
                                    DiagramPackage.eINSTANCE.getAbsoluteBoundsFilter_Height(),
                                    size.getHeight())));
                    ctc.add(new GMFCommandWrapper(editingDomain,
                            new SetCommand(editingDomain, expandedBoundsMarker,
                                    DiagramPackage.eINSTANCE.getAbsoluteBoundsFilter_Width(),
                                    size.getWidth())));
                } else {
                    expandedBoundsMarker = DiagramFactory.eINSTANCE.createAbsoluteBoundsFilter();
                    expandedBoundsMarker.setHeight(size.getHeight());
                    expandedBoundsMarker.setWidth(size.getWidth());
                    ctc.add(new GMFCommandWrapper(editingDomain,
                            new AddCommand(editingDomain, ddec.getGraphicalFilters(), expandedBoundsMarker)));
                }
            } else if (expandedBoundsMarker != null) {
                ctc.add(new GMFCommandWrapper(editingDomain,
                        new RemoveCommand(editingDomain, ddec.getGraphicalFilters(), expandedBoundsMarker)));
            }

            return result;
        }

    }
    return initialCommand;
}

From source file:org.apache.cassandra.db.lifecycle.View.java

static Function<View, View> updateCompacting(final Set<SSTableReader> unmark,
        final Iterable<SSTableReader> mark) {
    if (unmark.isEmpty() && Iterables.isEmpty(mark))
        return Functions.identity();
    return new Function<View, View>() {
        public View apply(View view) {
            assert all(mark, Helpers.idIn(view.sstablesMap));
            return new View(view.liveMemtables, view.flushingMemtables, view.sstablesMap,
                    replace(view.compacting, unmark, mark), view.intervalTree);
        }//from  ww  w.  j a  v  a2  s  .co m
    };
}

From source file:com.facebook.buck.testutil.FakeProjectFilesystem.java

@Override
public void writeLinesToPath(Iterable<String> lines, Path path) {
    StringBuilder builder = new StringBuilder();
    if (!Iterables.isEmpty(lines)) {
        Joiner.on('\n').appendTo(builder, lines);
        builder.append('\n');
    }//from   ww w . j ava  2  s .c  o  m
    writeContentsToPath(builder.toString(), path);
}

From source file:org.apache.brooklyn.core.typereg.BasicBrooklynTypeRegistry.java

@SuppressWarnings("deprecation")
private Maybe<RegisteredType> getSingle(String symbolicNameOrAliasIfNoVersion, final String versionFinal,
        final RegisteredTypeLoadingContext contextFinal) {
    RegisteredTypeLoadingContext context = contextFinal;
    if (context == null)
        context = RegisteredTypeLoadingContexts.any();
    String version = versionFinal;
    if (version == null)
        version = BrooklynCatalog.DEFAULT_VERSION;

    if (!BrooklynCatalog.DEFAULT_VERSION.equals(version)) {
        // normal code path when version is supplied

        Maybe<RegisteredType> type = getExactWithoutLegacyCatalog(symbolicNameOrAliasIfNoVersion, version,
                context);/* ww w .ja va 2 s  . co  m*/
        if (type.isPresent())
            return type;
    }

    if (BrooklynCatalog.DEFAULT_VERSION.equals(version)) {
        // alternate code path, if version blank or default

        Iterable<RegisteredType> types = getMatching(
                Predicates.and(RegisteredTypePredicates.symbolicName(symbolicNameOrAliasIfNoVersion),
                        RegisteredTypePredicates.satisfies(context)));
        if (Iterables.isEmpty(types)) {
            // look for alias if no exact symbolic name match AND no version is specified
            types = getMatching(Predicates.and(RegisteredTypePredicates.alias(symbolicNameOrAliasIfNoVersion),
                    RegisteredTypePredicates.satisfies(context)));
            // if there are multiple symbolic names then throw?
            Set<String> uniqueSymbolicNames = MutableSet.of();
            for (RegisteredType t : types) {
                uniqueSymbolicNames.add(t.getSymbolicName());
            }
            if (uniqueSymbolicNames.size() > 1) {
                String message = "Multiple matches found for alias '" + symbolicNameOrAliasIfNoVersion + "': "
                        + uniqueSymbolicNames + "; " + "refusing to select any.";
                log.warn(message);
                return Maybe.absent(message);
            }
        }
        if (!Iterables.isEmpty(types)) {
            RegisteredType type = RegisteredTypes.getBestVersion(types);
            if (type != null)
                return Maybe.of(type);
        }
    }

    // missing case is to look for exact version in legacy catalog
    CatalogItem<?, ?> item = mgmt.getCatalog().getCatalogItem(symbolicNameOrAliasIfNoVersion, version);
    if (item != null)
        return Maybe.of(RegisteredTypes.CI_TO_RT.apply(item));

    return Maybe.absent("No matches for " + symbolicNameOrAliasIfNoVersion
            + (versionFinal != null ? ":" + versionFinal : "")
            + (contextFinal != null ? " (" + contextFinal + ")" : ""));
}

From source file:com.vmware.appfactory.taskqueue.tasks.state.tasks.FeedConvertTask.java

private static boolean appHasTasks(TaskQueue taskQueue, final HasId app) {
    return !Iterables.isEmpty(taskQueue.findActiveTasksForApp(app.getId()));
}

From source file:com.crystal.flexin.record.SmartPoster.java

/**
 * Returns the first element of {@code elements} which is an instance of
 * {@code type}, or {@code null} if no such element exists.
 *///from  w ww .java 2  s.  c  o m
private static <T> T getFirstIfExists(Iterable<?> elements, Class<T> type) {
    Iterable<T> filtered = Iterables.filter(elements, type);
    T instance = null;
    if (!Iterables.isEmpty(filtered)) {
        instance = Iterables.get(filtered, 0);
    }
    return instance;
}