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

Introduction

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

Prototype

public static <T> Optional<T> of(T reference)

Source Link

Document

Returns an Optional instance containing the given non-null reference.

Usage

From source file:io.dockstore.webservice.SimpleAuthenticator.java

@Override
public Optional<Token> authenticate(String credentials) throws AuthenticationException {
    LOG.info("SimpleAuthenticator called with {}", credentials);
    final Token token = dao.findByContent(credentials);
    if (token != null) {
        return Optional.of(token);
    }/* www. java2s .  co m*/
    return Optional.absent();
}

From source file:se.sics.ktoolbox.croupier.behaviour.CroupierParticipant.java

@Override
public Optional<View> getView() {
    return Optional.of(view);
}

From source file:org.sosy_lab.cpachecker.cpa.value.symbolic.type.SymbolicExpression.java

protected SymbolicExpression(final MemoryLocation pRepresentedLocation) {
    representedLocation = Optional.of(pRepresentedLocation);
}

From source file:appeng.items.tools.quartz.ToolQuartzPickaxe.java

public ToolQuartzPickaxe(final AEFeature type) {
    super(ToolMaterial.IRON);

    this.type = type;
    this.feature = new ItemFeatureHandler(EnumSet.of(type, AEFeature.QuartzPickaxe), this, this,
            Optional.of(type.name()));
}

From source file:de.flapdoodle.logparser.io.BufferedReaderAdapter.java

@Override
public Optional<String> nextLine() throws IOException {
    String line = _reader.readLine();
    return line != null ? Optional.of(line) : Optional.<String>absent();
}

From source file:org.eclipse.buildship.ui.view.task.TaskNodeSelectionUtils.java

/**
 * Tries to map the given selection to a Gradle run configuration.
 *
 * @param selection the selection to map
 * @return the mapped run configuration, if possible
 *///w w  w.j a  v a2s . c o  m
public static Optional<GradleRunConfigurationAttributes> tryGetRunConfigurationAttributes(
        NodeSelection selection) {
    if (isValidRunConfiguration(selection)) {
        return Optional.of(getRunConfigurationAttributes(selection));
    } else {
        return Optional.absent();
    }
}

From source file:com.facebook.presto.metadata.QualifiedTablePrefix.java

public QualifiedTablePrefix(String catalogName, String schemaName) {
    this.catalogName = checkCatalogName(catalogName);
    this.schemaName = Optional.of(checkSchemaName(schemaName));
    this.tableName = Optional.absent();
}

From source file:org.apache.jclouds.oneandone.rest.handlers.OneAndOneRateLimitRetryHandler.java

@Override
protected Optional<Long> millisToNextAvailableRequest(HttpCommand command, HttpResponse response) {

    String secondsToNextAvailableRequest = response.getFirstHeaderOrNull(RETRY_AFTER_CUSTOM);
    if (secondsToNextAvailableRequest == null) {
        return Optional.absent();
    }//from  w w w .ja va 2s. c  o  m
    return Optional.of(millisUntilNextAvailableRequest(Long.parseLong(secondsToNextAvailableRequest)));

}

From source file:com.eucalyptus.loadbalancing.dns.LoadBalancerDomainName.java

public static Optional<LoadBalancerDomainName> findMatching(final Name name) {
    for (final LoadBalancerDomainName domainName : values()) {
        if (domainName.apply(name)) {
            return Optional.of(domainName);
        }//from  w ww. j a va2  s.  c o  m
    }
    return Optional.absent();
}

From source file:org.locationtech.geogig.api.plumbing.ResolveBranchId.java

@Override
protected Optional<Ref> _call() {
    Preconditions.checkState(id != null, "id has not been set.");
    Predicate<Ref> filter = new Predicate<Ref>() {
        @Override//  ww  w .j  ava  2  s . c o  m
        public boolean apply(@Nullable Ref ref) {
            return ref.getObjectId().equals(id);
        }
    };
    ImmutableSet<Ref> refs = command(ForEachRef.class).setFilter(filter).call();
    if (refs.isEmpty()) {
        return Optional.absent();
    } else {
        return Optional.of(refs.iterator().next());
    }
}