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

Introduction

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

Prototype

public static <T> Optional<T> absent()

Source Link

Document

Returns an Optional instance with no contained reference.

Usage

From source file:ec.nbdemetra.ui.tsproviders.ProvidersUtil.java

private static Optional<Node> find(DataSource dataSource, ProvidersNode node) {
    for (Node o : node.getChildren().getNodes()) {
        if (dataSource.getProviderName().equals(o.getName())) {
            return find(dataSource, (ProviderNode) o);
        }//w ww.  j  a v a 2 s . c om
    }
    return Optional.absent();
}

From source file:org.asoem.greyfish.utils.collect.EmptyFunctionalList.java

@Override
public Optional<Object> findFirst(final Predicate<? super Object> predicate) {
    return Optional.absent();
}

From source file:org.apache.gobblin.data.management.copy.replication.CopyRouteGeneratorBase.java

/**
 * for push mode, there is no optimization
 *///w w  w .j  a va2s .  co  m
@Override
public Optional<List<CopyRoute>> getPushRoutes(ReplicationConfiguration rc, EndPoint copyFrom) {
    if (rc.getCopyMode() == ReplicationCopyMode.PULL)
        return Optional.absent();

    DataFlowTopology topology = rc.getDataFlowToplogy();
    List<DataFlowTopology.DataFlowPath> paths = topology.getDataFlowPaths();

    for (DataFlowTopology.DataFlowPath p : paths) {
        /**
         * Routes are list of pairs that generated from config in the format of topology specification.
         * For example, source:[holdem, war] will end up with
         * List<(source, holdem), (source, war)>
         */
        List<CopyRoute> routes = p.getCopyRoutes();

        if (routes.isEmpty()) {
            continue;
        }

        // All the routes should has the same copyFrom but different copyTo.
        if (routes.get(0).getCopyFrom().equals(copyFrom)) {
            return Optional.of(routes);
        }
    }
    return Optional.absent();
}

From source file:com.github.rinde.rinsim.examples.warehouse.AGVAgent.java

AGVAgent(RandomGenerator r) {
    rng = r;
    roadModel = Optional.absent();
    destination = Optional.absent();
    path = new LinkedList<>();
}

From source file:info.rynkowski.hamsterclient.data.repository.datasources.dbus.entities.mapper.DbusFactMapper.java

public @Nonnull Fact transform(@Nonnull DbusFact dbusFact) {
    Calendar startTime = dbusFact.getStartTime().getCalendar();

    Optional<Calendar> endTime = Optional.absent();
    if (dbusFact.getEndTime().isPresent()) {
        endTime = Optional.of(dbusFact.getEndTime().get().getCalendar());
    }/*from   w w w  .j  a  v a  2 s .co m*/

    return new Fact.Builder() //
            .id(dbusFact.getId()).activity(dbusFact.getActivity()).category(dbusFact.getCategory())
            .startTime(startTime).endTime(endTime).description(dbusFact.getDescription())
            .tags(dbusFact.getTags()).build();
}

From source file:com.google.errorprone.matchers.method.InstanceMethodMatcherImpl.java

@Override
protected Optional<MatchState> matchResult(ExpressionTree item, MatchState method, VisitorState state) {
    if (method.sym().isStatic()) {
        return Optional.absent();
    }//from   w ww  .  j a va 2  s  .  c o  m
    return Optional.of(method);
}

From source file:org.apache.gobblin.service.modules.orchestration.AzkabanSpecExecutor.java

public AzkabanSpecExecutor(Config config) {
    this(config, Optional.absent());
}

From source file:org.locationtech.geogig.plumbing.remotes.RemoteResolve.java

/**
 * Executes the remote-add operation./*  w ww .  ja va  2 s .  c o  m*/
 * 
 * @return the {@link Remote} that was added.
 */
@Override
protected Optional<Remote> _call() {
    if (name == null || name.isEmpty()) {
        throw new RemoteException(StatusCode.MISSING_NAME);
    }

    Optional<Remote> result = Optional.absent();

    ConfigDatabase config = configDatabase();
    List<String> allRemotes = config.getAllSubsections("remote");
    if (allRemotes.contains(name)) {

        String remoteSection = "remote." + name;
        Optional<String> remoteFetchURL = config.get(remoteSection + ".url");
        Optional<String> remoteFetch = config.get(remoteSection + ".fetch");
        Optional<String> remoteMapped = config.get(remoteSection + ".mapped");
        Optional<String> remoteMappedBranch = config.get(remoteSection + ".mappedBranch");
        Optional<String> remoteUserName = config.get(remoteSection + ".username");
        Optional<String> remotePassword = config.get(remoteSection + ".password");
        Optional<String> remotePushURL = Optional.absent();
        if (remoteFetchURL.isPresent() && remoteFetch.isPresent()) {
            remotePushURL = config.get(remoteSection + ".pushurl");
        }
        Remote remote = new Remote(name, remoteFetchURL.or(""), remotePushURL.or(remoteFetchURL).or(""),
                remoteFetch.or(""), remoteMapped.or("false").equals("true"), remoteMappedBranch.orNull(),
                remoteUserName.orNull(), remotePassword.orNull());
        result = Optional.of(remote);
    }
    return result;
}

From source file:org.eclipse.emf.eson.building.NewObjectExtensions.java

public Optional<EClass> getDeclaredOrInferredEClass(NewObject newObject) {
    EClass eClass = newObject.getEClass();

    if (eClass == null) {
        Feature newObjectFeature = EcoreUtil2.getContainerOfType(newObject, Feature.class);
        if (newObjectFeature != null) {
            EStructuralFeature eFeature = newObjectFeature.getEFeature();
            if (!(eFeature instanceof EReference))
                return Optional.absent();
            EReference eReference = (EReference) eFeature;
            eClass = eReference.getEReferenceType();
        } else {/*from  ww w  . ja  v  a2s  . co m*/
            // Do NOT logger.error here!
            return Optional.absent();
        }
    }
    if (eClass.getEPackage() == null) {
        EcoreUtil.resolve(newObject.eClass(), newObject);
    }
    if (eClass.eIsProxy()) {
        if (logger.isDebugEnabled())
            logger.debug("The EClass for NewObject " + getNewObjectDescriptionForErrorMessage(newObject)
                    + " is still an unresolved EMF Proxy, something isn't working in your cross-Resource reference resolution");
        return Optional.absent();
    }
    EPackage ePackage = eClass.getEPackage();
    if (ePackage == null) {
        logger.error("No EPackage registered for EClass '" + eClass.getName() + "' defined in NewObject "
                + getNewObjectDescriptionForErrorMessage(newObject));
        return Optional.absent();
    }

    return Optional.of(eClass);
}

From source file:org.geogit.api.porcelain.RemoteResolve.java

/**
 * Executes the remote-add operation.// w w  w .j a  v a2s .  co  m
 * 
 * @return the {@link Remote} that was added.
 */
@Override
public Optional<Remote> call() {
    if (name == null || name.isEmpty()) {
        throw new RemoteException(StatusCode.MISSING_NAME);
    }

    Optional<Remote> result = Optional.absent();

    List<String> allRemotes = config.getAllSubsections("remote");
    if (allRemotes.contains(name)) {

        String remoteSection = "remote." + name;
        Optional<String> remoteFetchURL = config.get(remoteSection + ".url");
        Optional<String> remoteFetch = config.get(remoteSection + ".fetch");
        Optional<String> remoteMapped = config.get(remoteSection + ".mapped");
        Optional<String> remoteMappedBranch = config.get(remoteSection + ".mappedBranch");
        if (remoteFetchURL.isPresent() && remoteFetch.isPresent()) {
            Optional<String> remotePushURL = config.get(remoteSection + ".pushurl");

            Remote remote = new Remote(name, remoteFetchURL.get(), remotePushURL.or(remoteFetchURL.get()),
                    remoteFetch.get(), remoteMapped.or("false").equals("true"), remoteMappedBranch.orNull());
            result = Optional.of(remote);
        }
    }
    return result;
}