Example usage for com.google.common.collect FluentIterable first

Introduction

In this page you can find the example usage for com.google.common.collect FluentIterable first.

Prototype

@CheckReturnValue
public final Optional<E> first() 

Source Link

Document

Returns an Optional containing the first element in this fluent iterable.

Usage

From source file:org.codeseed.common.config.PropertySources.java

/**
 * Returns a source which returns the first non-{@code null} value from a
 * series of sources.//from   ww w. ja  va2  s .  c om
 *
 * @param sources
 *            the ordered sources to combine
 * @return property source that considers multiple sources
 */
public static PropertySource compose(Iterable<PropertySource> sources) {
    FluentIterable<PropertySource> s = FluentIterable.from(sources)
            .filter(Predicates.not(Predicates.equalTo(empty())));
    if (s.isEmpty()) {
        return empty();
    } else if (s.size() == 1) {
        return s.first().get();
    } else {
        return new CompositionSource(s.toList());
    }
}

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From source file:org.jclouds.examples.rackspace.autoscale.CreateWebhook.java

private void createWebhook() {
    System.out.format("Create Webhook%n");

    FluentIterable<Webhook> result = webhookApi.create(NAME, ImmutableMap.<String, Object>of());

    System.out.format("  %s%n", result.first().get());
}

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From source file:org.testfx.service.query.impl.NodeQueryImpl.java

@Override
@SuppressWarnings("unchecked")
public <T extends Node> T query() {
    FluentIterable<Node> query = FluentIterable.from(parentNodes);
    return (T) query.first().orNull();
}

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From source file:org.testfx.service.query.impl.NodeQueryImpl.java

@Override
@SuppressWarnings("unchecked")
public <T extends Node> Optional<T> tryQuery() {
    FluentIterable<Node> query = FluentIterable.from(parentNodes);
    return (Optional<T>) query.first();
}

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From source file:org.jclouds.abiquo.domain.cloud.VirtualDatacenter.java

public VirtualMachineTemplate getAvailableTemplate(final Integer id) {
    PaginatedCollection<VirtualMachineTemplateDto, VirtualMachineTemplatesDto> templates = context.getApi()
            .getCloudApi()// w w  w.  j  ava  2s  .  com
            .listAvailableTemplates(target, VirtualMachineTemplateOptions.builder().idTemplate(id).build());

    FluentIterable<VirtualMachineTemplateDto> all = templates.toPagedIterable().concat();
    return wrap(context, VirtualMachineTemplate.class, all.first().orNull());
}

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From source file:org.jclouds.abiquo.domain.cloud.VirtualDatacenter.java

public VirtualMachineTemplate getAvailablePersistentTemplate(final Integer id) {
    PaginatedCollection<VirtualMachineTemplateDto, VirtualMachineTemplatesDto> templates = context.getApi()
            .getCloudApi().listAvailableTemplates(target, VirtualMachineTemplateOptions.builder().idTemplate(id)
                    .persistent(StatefulInclusion.ALL).build());

    FluentIterable<VirtualMachineTemplateDto> all = templates.toPagedIterable().concat();
    return wrap(context, VirtualMachineTemplate.class, all.first().orNull());
}

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From source file:ezbake.deployer.AccumuloEzDeployerStore.java

private Optional<Value> getValueFromStore(String fqApplicationId, Text columnQualifier) throws TException {
    FluentIterable<Value> rows = getValueFromStoreIterator(new Text(fqApplicationId), columnQualifier);
    return rows.first();
}

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From source file:io.selendroid.server.model.DeviceStore.java

/**
 * Finds a device for the requested capabilities. <b>important note:</b> if the device is not any
 * longer used, call the {@link #release(AndroidDevice, AndroidApp)} method.
 *
 * @param caps The desired test session capabilities.
 * @return Matching device for a test session.
 * @throws DeviceStoreException/*from ww w  .j a  v  a  2s  .  c o m*/
 * @see {@link #release(AndroidDevice, AndroidApp)}
 */
public synchronized AndroidDevice findAndroidDevice(SelendroidCapabilities caps) throws DeviceStoreException {

    Preconditions.checkArgument(caps != null, "Error: capabilities are null");

    if (androidDevices.isEmpty()) {
        throw new DeviceStoreException("Fatal Error: Device Store does not contain any Android Device.");
    }

    String platformVersion = caps.getPlatformVersion();

    Iterable<AndroidDevice> candidateDevices = Strings.isNullOrEmpty(platformVersion)
            ? Iterables.concat(androidDevices.values())
            : androidDevices.get(DeviceTargetPlatform.fromPlatformVersion(platformVersion));

    candidateDevices = Objects.firstNonNull(candidateDevices, Collections.EMPTY_LIST);

    FluentIterable<AndroidDevice> allMatchingDevices = FluentIterable.from(candidateDevices)
            .filter(deviceNotInUse()).filter(deviceSatisfiesCapabilities(caps));

    if (!allMatchingDevices.isEmpty()) {

        AndroidDevice matchingDevice = allMatchingDevices.filter(deviceRunning()).first()
                .or(allMatchingDevices.first()).get();

        if (!deviceRunning().apply(matchingDevice)) {
            log.info("Using potential match: " + matchingDevice);
        }

        devicesInUse.add(matchingDevice);
        return matchingDevice;

    } else {
        throw new DeviceStoreException(
                "No devices are found. " + "This can happen if the devices are in use or no device screen "
                        + "matches the required capabilities.");
    }
}

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From source file:com.b2international.snowowl.datastore.oplock.impl.DatastoreOperationLockException.java

@Override
public String getMessage() {
    final FluentIterable<DatastoreLockContext> contexts = FluentIterable.from(targetMap.values());
    final Optional<DatastoreLockContext> rootContext = contexts
            .firstMatch(new Predicate<DatastoreLockContext>() {
                @Override//from   w ww .j  av  a2s .  c  om
                public boolean apply(DatastoreLockContext input) {
                    return DatastoreLockContextDescriptions.ROOT.equals(input.getParentDescription());
                }
            });

    DatastoreLockContext context = null;
    if (rootContext.isPresent()) {
        context = rootContext.get();
    } else {
        if (contexts.first().isPresent()) {
            context = contexts.first().get();
        } else {
            return super.getMessage();
        }
    }

    return String.format("%s %s is %s.", super.getMessage(), context.getUserId(), context.getDescription());
}

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From source file:com.siemens.sw360.portal.portlets.moderation.ModerationPortlet.java

private void renderNextModeration(RenderRequest request, RenderResponse response, final User user,
        String sessionMessage, ModerationService.Iface client, ModerationRequest moderationRequest)
        throws IOException, PortletException, TException {
    if (ACTION_CANCEL.equals(request.getParameter(ACTION))) {
        SessionMessages.add(request, "request_processed", sessionMessage);
        renderStandardView(request, response);
        return;//from   ww w .  ja  va  2 s .c om
    }

    List<ModerationRequest> requestsByModerator = client.getRequestsByModerator(user);
    ImmutableList<ModerationRequest> openModerationRequests = FluentIterable.from(requestsByModerator)
            .filter(new Predicate<ModerationRequest>() {
                @Override
                public boolean apply(ModerationRequest input) {
                    return ModerationState.PENDING.equals(input.getModerationState());
                }
            }).toList();
    Collections.sort(openModerationRequests, compareByTimeStamp());

    int nextIndex = openModerationRequests.indexOf(moderationRequest) + 1;
    if (nextIndex < openModerationRequests.size()) {
        sessionMessage += " You have assigned yourself to this moderation request.";
        SessionMessages.add(request, "request_processed", sessionMessage);
        renderEditViewForId(request, response, openModerationRequests.get(nextIndex).getId());
    } else {
        FluentIterable<ModerationRequest> requestsInProgressAndAssignedToMe = FluentIterable
                .from(requestsByModerator).filter(new Predicate<ModerationRequest>() {
                    @Override
                    public boolean apply(ModerationRequest input) {
                        return ModerationState.INPROGRESS.equals(input.getModerationState())
                                && user.getEmail().equals(input.getReviewer());
                    }
                });

        if (requestsInProgressAndAssignedToMe.first().isPresent()) {
            sessionMessage += " You have returned to your first open request.";
            SessionMessages.add(request, "request_processed", sessionMessage);
            renderEditViewForId(request, response,
                    Collections.min(requestsInProgressAndAssignedToMe.toList(), compareByTimeStamp()).getId());
        } else {
            sessionMessage += " You have no open Requests.";
            SessionMessages.add(request, "request_processed", sessionMessage);
            renderStandardView(request, response);
        }
    }
}

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