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

Introduction

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

Prototype

public static <T> Optional<T> fromNullable(@Nullable T nullableReference)

Source Link

Document

If nullableReference is non-null, returns an Optional instance containing that reference; otherwise returns Optional#absent .

Usage

From source file:springfox.bean.validators.plugins.BeanValidators.java

public static <T extends Annotation> Optional<T> validatorFromField(ModelPropertyContext context,
        Class<T> annotationType) {

    Optional<AnnotatedElement> annotatedElement = context.getAnnotatedElement();
    Optional<T> notNull = Optional.absent();
    if (annotatedElement.isPresent()) {
        notNull = Optional.fromNullable(annotatedElement.get().getAnnotation(annotationType));
    }//from ww w. j  a va 2  s .c o m
    return notNull;
}

From source file:ph.devcon.android.speaker.fragment.PanelOnlyFragment.java

@Override
public void onResume() {
    super.onResume();
    FetchedPanelSpeakerListEvent event = eventBus.getStickyEvent(FetchedPanelSpeakerListEvent.class);
    Optional<FetchedPanelSpeakerListEvent> eventOptional = Optional.fromNullable(event);
    if (eventOptional.isPresent()) {
        setSpeakerList(eventOptional.get().speakers);
    }/* ww  w  .  ja v  a 2  s.co  m*/
}

From source file:ratpack.exec.internal.DefaultExecController.java

public static Optional<ExecController> getThreadBoundController() {
    return Optional.fromNullable(THREAD_BINDING.get());
}

From source file:com.vino.repositories.DomainRepository.java

public Optional<WineDomain> getDomainByKey(String key) {
    return Optional
            .fromNullable(collections.from(EntityType.DOMAIN).findOne(new ObjectId(key)).as(WineDomain.class));
}

From source file:org.sonar.server.computation.qualityprofile.ActiveRulesHolderRule.java

@Override
public Optional<ActiveRule> get(RuleKey ruleKey) {
    return Optional.fromNullable(activeRulesByKey.get(ruleKey));
}

From source file:com.addthis.hydra.job.web.jersey.OptionalExtractor.java

@Override
public Object extract(MultivaluedMap<String, String> parameters) {
    return Optional.fromNullable(extractor.extract(parameters));
}

From source file:com.facebook.swift.parser.model.Service.java

public Service(String name, String parent, List<ThriftMethod> methods) {
    this.name = checkNotNull(name, "name");
    this.parent = Optional.fromNullable(parent);
    this.methods = ImmutableList.copyOf(checkNotNull(methods, "methods"));
}

From source file:org.sonar.server.computation.task.projectanalysis.qualitygate.QualityGateHolderRule.java

public void setQualityGate(@Nullable QualityGate qualityGate) {
    this.qualityGate = Optional.fromNullable(qualityGate);
}

From source file:org.opendaylight.openflowplugin.applications.frsync.dao.FlowCapableNodeSnapshotDao.java

public Optional<FlowCapableNode> loadByNodeId(@Nonnull NodeId nodeId) {
    final FlowCapableNode node = cache.get(nodeId.getValue());
    return Optional.fromNullable(node);
}

From source file:net.revelc.code.blazon.types.AbstractTrimmedType.java

@Override
protected Optional<String> checkPreconditions(final Optional<String> raw) {
    String result = null;/* w w  w  .  j  a v a2s  .c  o m*/
    if (raw.isPresent()) {
        result = raw.get().trim();
    }
    return Optional.fromNullable((result == null || result.isEmpty()) ? null : result);
}