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:ch.css.workingdiary.service.CompetenceAreaService.java

public Optional<List<CompetenceArea>> getCompetenceAreas(final long id) {
    final List<CompetenceArea> competenceAreas = competenceAreaDao.getCompetenceAreas(id);
    return Optional.fromNullable(competenceAreas);
}

From source file:com.spotify.heroic.metric.MetricGroup.java

@JsonCreator
public MetricGroup(@JsonProperty("timestamp") long timestamp,
        @JsonProperty("groups") List<MetricCollection> groups) {
    this.timestamp = timestamp;
    this.groups = Optional.fromNullable(groups).or(EMPTY_GROUPS);
}

From source file:org.jclouds.openstack.trove.v1.domain.Flavor.java

@ConstructorProperties({ "id", "name", "ram", "links" })
protected Flavor(int id, String name, int ram, List<Link> links) {
    this.id = id;
    this.name = Optional.fromNullable(name);
    this.ram = ram;
    this.links = links;
}

From source file:org.locationtech.geogig.model.impl.RevFeatureImpl.java

@Override
public ImmutableList<Optional<Object>> getValues() {
    return ImmutableList.copyOf(Lists.transform(values, (v) -> Optional.fromNullable(safeCopy(v))));
}

From source file:br.com.objectos.wiki.core.page.WikiPageCacheGuice.java

@Override
public Optional<WikiPage> byWikiPageKey(WikiPageKey pageKey) {
    try {// w  ww.ja v  a 2 s .  com
        WikiPage page = pageKeyCache.getUnchecked(pageKey);
        return Optional.fromNullable(page);
    } catch (InvalidCacheLoadException e) {
        return Optional.absent();
    }
}

From source file:org.sonar.server.computation.scm.ScmInfoRepositoryRule.java

@Override
public Optional<ScmInfo> getScmInfo(Component component) {
    checkNotNull(component, "Component cannot be bull");
    ScmInfo scmInfo = scmInfoByFileRef.get(component.getReportAttributes().getRef());
    return Optional.fromNullable(scmInfo);
}

From source file:gobblin.metrics.InnerCounter.java

public InnerCounter(MetricContext context, String name, ContextAwareCounter counter) {
    this.tagged = new Tagged();
    this.name = name;

    Optional<MetricContext> parentContext = context.getParent();
    if (parentContext.isPresent()) {
        this.parentCounter = Optional.fromNullable(parentContext.get().contextAwareCounter(name));
    } else {//from w w  w  .j a  va 2  s .  c  o  m
        this.parentCounter = Optional.absent();
    }

    this.contextAwareCounter = new WeakReference<>(counter);
}

From source file:org.auraframework.impl.css.flavor.FlavorOverrideLocationImpl.java

@Override
public Optional<String> getCondition() {
    return Optional.fromNullable(condition);
}

From source file:com.android.builder.core.DefaultManifestParser.java

@Nullable
@Override/*from w w w. j  av a 2 s . c om*/
public synchronized String getPackage(@NonNull File manifestFile) {
    if (mPackage == null) {
        mPackage = Optional.fromNullable(getStringValue(manifestFile, "/manifest/@package"));
    }
    return mPackage.orNull();
}

From source file:org.opendaylight.mdsal.dom.broker.DOMMountPointServiceImpl.java

@Override
public Optional<DOMMountPoint> getMountPoint(final YangInstanceIdentifier path) {
    return Optional.fromNullable(mountPoints.get(path));
}