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: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);
    }//from   www .  j  a v  a 2s.c  om
    return Optional.absent();
}

From source file:se.sics.kompics.network.NetworkException.java

public NetworkException(String message, Address peer, Transport protocol) {
    this.message = message;
    this.peer = peer;
    this.protocol = protocol;
    this.cause = Optional.absent();
}

From source file:com.axemblr.provisionr.amazon.config.DefaultProviderConfig.java

public Optional<Provider> createProvider() {
    if (accessKey.isEmpty() || secretKey.isEmpty()) {
        return Optional.absent();
    }/*from  ww  w  .j  a  v a 2s  .  com*/
    final ProviderBuilder builder = Provider.builder().id(AmazonProvisionr.ID).accessKey(accessKey)
            .secretKey(secretKey).option("region", region);

    if (endpoint.isEmpty()) {
        builder.endpoint(Optional.<String>absent());
    } else {
        builder.endpoint(endpoint);
    }

    return Optional.of(builder.createProvider());
}

From source file:com.dowdandassociates.gentoo.bootstrap.SimpleImageProvider.java

public Optional<Image> get() {
    String imageId = getImageId();

    if (null == imageId) {
        return Optional.absent();
    }/*w ww . j  a  v  a2  s .  c  o m*/

    DescribeImagesResult result = ec2Client.describeImages(new DescribeImagesRequest().withImageIds(imageId));

    if (result.getImages().isEmpty()) {
        return Optional.absent();
    }

    return Optional.fromNullable(result.getImages().get(0));
}

From source file:com.github.rinde.rinsim.examples.experiment.Taxi.java

Taxi(Point startPosition, int capacity) {
    super(VehicleDTO.builder().capacity(capacity).startPosition(startPosition).speed(SPEED).build());
    curr = Optional.absent();
}

From source file:org.jenkinsci.plugins.jiraext.domain.JiraCommit.java

public JiraCommit(String jiraTicket, ChangeLogSet.Entry changeSet) {
    this.jiraTicket = jiraTicket;
    if (changeSet == null) {
        this.changeSet = Optional.absent();
    } else {//from  w w w.j  a  va2  s.c om
        this.changeSet = Optional.of(changeSet);
    }
}

From source file:com.facebook.buck.cxx.DefaultPreprocessor.java

@Override
public Optional<Function<String, Iterable<String>>> getExtraLineProcessor() {
    return Optional.absent();
}

From source file:com.google.devtools.build.lib.skyframe.serialization.OptionalCodec.java

@Override
public Optional<?> deserialize(DeserializationContext context, CodedInputStream codedIn)
        throws SerializationException, IOException {
    if (!codedIn.readBool()) {
        return Optional.absent();
    }/*from   www  . j  a v  a  2s  .  c  om*/
    return Optional.of(context.deserialize(codedIn));
}

From source file:org.sonar.server.computation.task.projectanalysis.measure.BatchMeasureToMeasure.java

public Optional<Measure> toMeasure(@Nullable ScannerReport.Measure batchMeasure, Metric metric) {
    Objects.requireNonNull(metric);
    if (batchMeasure == null) {
        return Optional.absent();
    }/*from  ww  w .  j a va  2s.  c o m*/

    Measure.NewMeasureBuilder builder = Measure.newMeasureBuilder();
    switch (metric.getType().getValueType()) {
    case INT:
        return toIntegerMeasure(builder, batchMeasure);
    case LONG:
        return toLongMeasure(builder, batchMeasure);
    case DOUBLE:
        return toDoubleMeasure(builder, batchMeasure);
    case BOOLEAN:
        return toBooleanMeasure(builder, batchMeasure);
    case STRING:
        return toStringMeasure(builder, batchMeasure);
    case LEVEL:
        return toLevelMeasure(builder, batchMeasure);
    case NO_VALUE:
        return toNoValueMeasure(builder, batchMeasure);
    default:
        throw new IllegalArgumentException("Unsupported Measure.ValueType " + metric.getType().getValueType());
    }
}

From source file:appeng.core.features.DamagedItemDefinition.java

public DamagedItemDefinition(@Nonnull final IStackSrc source) {
    Preconditions.checkNotNull(source);/*from  w  w  w .  j a  va2s  .  c o m*/

    if (source.isEnabled()) {
        this.source = Optional.of(source);
    } else {
        this.source = Optional.absent();
    }
}