Example usage for com.google.common.base Optional isPresent

Introduction

In this page you can find the example usage for com.google.common.base Optional isPresent.

Prototype

public abstract boolean isPresent();

Source Link

Document

Returns true if this holder contains a (non-null) instance.

Usage

From source file:org.opendaylight.yangtools.yang.binding.util.RpcMethodInvoker.java

protected static RpcMethodInvoker from(final Method method) {
    Optional<Class<? extends DataContainer>> input = BindingReflections.resolveRpcInputClass(method);
    try {//from   w  w w  . ja  v  a  2  s  .com
        MethodHandle methodHandle = LOOKUP.unreflect(method);
        if (input.isPresent()) {
            return new RpcMethodInvokerWithInput(methodHandle);
        }
        return new RpcMethodInvokerWithoutInput(methodHandle);
    } catch (IllegalAccessException e) {
        throw new IllegalStateException("Lookup on public method failed.", e);
    }

}

From source file:org.opendaylight.tl1.impl.MDSal.java

public static List<String> getAllDevices() {

    InstanceIdentifier<DeviceRegistry> identifier = InstanceIdentifier.create(DeviceRegistry.class);
    ReadOnlyTransaction transaction = dbroker.newReadOnlyTransaction();

    ReadOnlyTransaction readTx = dbroker.newReadOnlyTransaction();
    ListenableFuture<Optional<DeviceRegistry>> dataFuture = readTx.read(LogicalDatastoreType.OPERATIONAL,
            identifier);//from   www . j a v a2  s  .c om
    Futures.addCallback(dataFuture, new FutureCallback<Optional<DeviceRegistry>>() {
        @Override
        public void onSuccess(final Optional<DeviceRegistry> result) {
            if (result.isPresent()) {
                // data are present in data store.
                allDevices = ExtractIps(result.get().getDeviceRegistryEntry());
                //doSomething(result.get());
            } else {
                // data are not present in data store.
                allDevices = null;
            }
        }

        @Override
        public void onFailure(final Throwable t) {
            // Error during read
        }

    });

    return allDevices;
}

From source file:org.apache.gobblin.hive.HiveConfFactory.java

/**
 *
 * @param hcatURI User specified hcatURI.
 * @param broker A shared resource broker
 * @return a {@link HiveConf} with specified hcatURI if any.
 * @throws IOException//from  w  w  w .j  ava2s .  c  o  m
 */
public static <S extends ScopeType<S>> HiveConf get(Optional<String> hcatURI, SharedResourcesBroker<S> broker)
        throws IOException {
    try {
        SharedHiveConfKey confKey = hcatURI.isPresent() && StringUtils.isNotBlank(hcatURI.get())
                ? new SharedHiveConfKey(hcatURI.get())
                : SharedHiveConfKey.INSTANCE;
        return broker.getSharedResource(new HiveConfFactory<>(), confKey);
    } catch (NotConfiguredException nce) {
        throw new IOException(nce);
    }
}

From source file:org.opendaylight.openflowplugin.applications.topology.manager.TopologyManagerUtil.java

static void removeAffectedLinks(final NodeId id, Optional<Topology> topologyOptional,
        ReadWriteTransaction transaction, final InstanceIdentifier<Topology> topology) {
    if (!topologyOptional.isPresent()) {
        return;//from  w w w  .ja  v  a 2  s  .  co  m
    }

    List<Link> linkList = topologyOptional.get().getLink() != null ? topologyOptional.get().getLink()
            : Collections.<Link>emptyList();
    for (Link link : linkList) {
        if (id.equals(link.getSource().getSourceNode()) || id.equals(link.getDestination().getDestNode())) {
            transaction.delete(LogicalDatastoreType.OPERATIONAL, linkPath(link, topology));
        }
    }
}

From source file:org.opendaylight.openflowplugin.applications.topology.manager.TopologyManagerUtil.java

static void removeAffectedLinks(final TpId id, Optional<Topology> topologyOptional,
        ReadWriteTransaction transaction, final InstanceIdentifier<Topology> topology) {
    if (!topologyOptional.isPresent()) {
        return;//  www .  java2s .  c  o m
    }

    List<Link> linkList = topologyOptional.get().getLink() != null ? topologyOptional.get().getLink()
            : Collections.<Link>emptyList();
    for (Link link : linkList) {
        if (id.equals(link.getSource().getSourceTp()) || id.equals(link.getDestination().getDestTp())) {
            transaction.delete(LogicalDatastoreType.OPERATIONAL, linkPath(link, topology));
        }
    }
}

From source file:org.eclipse.buildship.core.workspace.internal.ProjectNatureUpdater.java

private static Set<String> toNatures(Optional<List<OmniEclipseProjectNature>> projectNatures,
        IProjectDescription description) {
    Set<String> natures = Sets.newLinkedHashSet();
    if (projectNatures.isPresent()) {
        natures.addAll(toNatures(projectNatures.get()));
    } else {/*from  w  w  w. j a  v  a 2  s.  c  o m*/
        natures.addAll(Arrays.asList(description.getNatureIds()));
    }
    natures.add(GradleProjectNature.ID);
    return natures;
}

From source file:org.anhonesteffort.flock.crypto.KeyHelper.java

public static Optional<String> buildEncodedSalt(Context context) throws IOException {
    Optional<byte[]> salt = KeyStore.getKeyMaterialSalt(context);

    if (!salt.isPresent())
        return Optional.absent();

    return Optional.of(Base64.encodeBytes(salt.get()));
}

From source file:org.opendaylight.netvirt.vpnmanager.api.VpnExtraRouteHelper.java

public static List<String> getUsedRds(DataBroker broker, long vpnId, String destPrefix) {
    InstanceIdentifier<DestPrefixes> usedRdsId = getUsedRdsIdentifier(vpnId, destPrefix);
    Optional<DestPrefixes> usedRds = MDSALUtil.read(broker, LogicalDatastoreType.CONFIGURATION, usedRdsId);
    return usedRds.isPresent() ? usedRds.get().getRds() : new ArrayList<String>();
}

From source file:at.ac.univie.isc.asio.d2rq.D2rqTools.java

/**
 * Find the embedded base resource IRI if present.
 *
 * @param model given configuration/*from   w ww . ja v a2s.c o m*/
 * @return base resource IRI embedded in model.
 */
static Optional<String> findEmbeddedBaseUri(final Model model) {
    final Optional<Resource> server = findSingleOfType(model, D2RConfig.Server);
    if (server.isPresent()) {
        final Resource baseUriProperty = server.get().getPropertyResourceValue(D2RConfig.baseURI);
        return baseUriProperty != null ? Optional.fromNullable(baseUriProperty.getURI())
                : Optional.<String>absent();
    } else {
        return Optional.absent();
    }
}

From source file:li.klass.fhem.behavior.dim.DimmableBehavior.java

public static Optional<DimmableBehavior> behaviorFor(FhemDevice fhemDevice) {
    SetList setList = fhemDevice.getSetList();

    Optional<DiscreteDimmableBehavior> discrete = DiscreteDimmableBehavior.behaviorFor(setList);
    if (discrete.isPresent()) {
        return Optional.of(new DimmableBehavior(fhemDevice, discrete.get()));
    }/*from   w  w  w  .  jav  a 2  s . c om*/

    Optional<ContinuousDimmableBehavior> continuous = ContinuousDimmableBehavior.behaviorFor(setList);
    if (continuous.isPresent()) {
        DimmableTypeBehavior behavior = continuous.get();
        return Optional.of(new DimmableBehavior(fhemDevice, behavior));
    }

    return Optional.absent();
}