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:springfox.bean.validators.plugins.BeanValidators.java

@VisibleForTesting
static <T extends Annotation> Optional<T> annotationFrom(AnnotatedMember nullableMember,
        Class<T> annotationType) {

    Optional<AnnotatedMember> member = Optional.fromNullable(nullableMember);
    Optional<T> notNull = Optional.absent();
    if (member.isPresent()) {
        notNull = FluentIterable.from(member.get().annotations()).filter(annotationType).first();
    }/*from   w ww .  j  a v  a 2  s . c om*/
    return notNull;
}

From source file:com.gradleware.tooling.toolingmodel.repository.internal.AbstractOmniClasspathEntry.java

protected static Optional<List<OmniClasspathAttribute>> getClasspathAttributes(EclipseClasspathEntry entry) {
    DomainObjectSet<? extends ClasspathAttribute> attributes;
    try {/*  w  ww . ja  v a 2s. c o  m*/
        attributes = entry.getClasspathAttributes();
    } catch (UnsupportedMethodException e) {
        return Optional.absent();
    }
    Builder<OmniClasspathAttribute> builder = ImmutableList.builder();
    for (ClasspathAttribute attribute : attributes) {
        builder.add(DefaultOmniClasspathAttribute.from(attribute));
    }
    return Optional.<List<OmniClasspathAttribute>>of(builder.build());
}

From source file:net.openaudiomc.groups.GroupManager.java

public Optional<PlayerGroup> getGroup(String group) {
    if (groups.get(group) == null) {
        return Optional.absent();
    } else {/*from   w  w  w  .java 2  s. c  o  m*/
        return Optional.of(groups.get(group));
    }
}

From source file:com.forerunnergames.tools.common.Result.java

public static <V, R extends Result<V>> Optional<R> firstFailedFrom(final Iterable<R> results) {
    Arguments.checkIsNotNull(results, "results");
    Arguments.checkHasNoNullElements(results, "results");

    for (final R result : results) {
        if (result.failed())
            return Optional.of(result);
    }//from w  w w  . j a  va2s  . co  m

    return Optional.absent();
}

From source file:edmtools.Metric.java

public Metric(int versionMask, int lowByteBit, String protoPath) {
    this.versionMask = versionMask;
    this.lowByteBit = lowByteBit;
    this.highByteBit = Optional.absent();
    this.protoPath = protoPath;
    this.scaleFactor = Optional.absent();
}

From source file:io.urmia.job.pub.ZkJobStatusMonitor.java

@Override
public Optional<JobStatus> getStatus(String jobId, JobStatusUpdateHandler handler) throws Exception {
    String path = getGlobalZkPath(jobId);

    if (client.checkExists().forPath(path) == null)
        return Optional.absent();

    byte[] statusBytes = client.getData().forPath(path);
    String statusJobString = new String(statusBytes).trim();

    log.info("statusJobString: {}", statusJobString);

    JobStatus.Stats counters = handler.getStats();

    JobStatus jobStatus = new JobStatus(statusJobString, counters);

    return Optional.of(jobStatus);
}

From source file:com.facebook.buck.rules.coercer.OCamlSourceTypeCoercer.java

@Override
public Optional<OCamlSource> getOptionalValue() {
    return Optional.absent();
}

From source file:se.sics.ktoolbox.cc.heartbeat.util.CCKeyFactory.java

public static Identifier extractOverlay(byte[] schemaPrefix, Key key) {
    ByteBuffer bbKey = key.getWrapper();
    bbKey.position(schemaPrefix.length);
    int overlaySize = bbKey.get();
    byte[] overlayId = new byte[overlaySize];
    bbKey.get(overlayId);//from w  w  w .j  a  va2  s .  c  o m
    ByteBuf buf = Unpooled.wrappedBuffer(overlayId);
    return (Identifier) Serializers.fromBinary(buf, Optional.absent());
}

From source file:io.macgyver.core.resource.ResourceProvider.java

public Optional<Resource> findResourceByPath(String path) throws IOException {
    try {//w  ww .j  a v  a 2  s .  co  m
        return Optional.fromNullable(getResourceByPath(path));
    } catch (IOException e) {

    }
    return Optional.absent();
}