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:org.apache.provisionr.amazon.activities.TerminateInstances.java

@Override
public void execute(AmazonEC2 client, Pool pool, DelegateExecution execution) {
    @SuppressWarnings("unchecked")
    Optional<List<String>> instanceIds = Optional
            .fromNullable((List<String>) execution.getVariable(ProcessVariables.INSTANCE_IDS));

    LOG.info(">> Terminating instances: {}", instanceIds);
    if (instanceIds.isPresent() && instanceIds.get().size() > 0) {
        client.terminateInstances(new TerminateInstancesRequest().withInstanceIds(instanceIds.get()));
    }/*from   w  w  w  . jav a2  s . co m*/
}

From source file:io.crate.planner.node.dml.InsertFromSubQuery.java

public InsertFromSubQuery(Plan innerPlan, @Nullable MergePhase handlerMergeNode, UUID id) {
    this.innerPlan = innerPlan;
    this.handlerMergeNode = Optional.fromNullable(handlerMergeNode);
    this.id = id;
}

From source file:com.cloudera.exhibit.core.simple.SimpleExhibitStore.java

@Override
public Optional<Exhibit> find(ExhibitId id) {
    if (!entity.equals(id.getEntity())) {
        return Optional.absent();
    }/* ww  w. j  a v  a2 s. c  o m*/
    return Optional.fromNullable(exhibits.get(id.getId()));
}

From source file:org.geogit.osm.internal.history.ChangesetScanner.java

public Optional<Changeset> parse(InputStream changesetStream) throws XMLStreamException {

    XMLStreamReader reader;//from  ww  w  . j a v  a2 s .  c o  m

    reader = XMLInputFactory.newFactory().createXMLStreamReader(changesetStream, "UTF-8");

    Changeset changeset = parse(reader);

    return Optional.fromNullable(changeset);
}

From source file:io.crate.sql.tree.Update.java

public Update(Relation relation, List<Assignment> assignments, @Nullable Expression where) {
    Preconditions.checkNotNull(relation, "relation is null");
    Preconditions.checkNotNull(assignments, "assignments are null");
    this.relation = relation;
    this.assignments = assignments;
    this.where = Optional.fromNullable(where);
}

From source file:org.apache.usergrid.corepersistence.export.ExportRequestBuilderImpl.java

/***
 *
 * @param applicationId The application id
 * @return//from   ww  w  .j  av a  2  s.  c om
 */
@Override
public ExportRequestBuilder withApplicationId(final UUID applicationId) {
    this.withApplicationId = Optional.fromNullable(applicationId);
    return this;
}

From source file:com.wealdtech.utils.RequestHint.java

@JsonCreator
public RequestHint(@JsonProperty("latitude") final Integer latitude,
        @JsonProperty("longitude") final Integer longitude, @JsonProperty("altitude") final Float altitude,
        @JsonProperty("address") final InetAddress address, @JsonProperty("useragent") final String userAgent)

{
    this.latitude = Optional.fromNullable(latitude);
    this.longitude = Optional.fromNullable(longitude);
    this.altitude = Optional.fromNullable(altitude);
    this.address = Optional.fromNullable(address);
    this.userAgent = Optional.fromNullable(userAgent);
}

From source file:com.spotify.heroic.suggest.MatchOptions.java

@JsonCreator
public MatchOptions(@JsonProperty("fuzzy") boolean fuzzy,
        @JsonProperty("fuzzyPrefixLength") Integer fuzzyPrefixLength,
        @JsonProperty("fuzzyMaxExpansions") Integer fuzzyMaxExpansions,
        @JsonProperty("tokenize") boolean tokenize) {
    this.fuzzy = Optional.fromNullable(fuzzy).or(DEFAULT_FUZZY);
    this.fuzzyPrefixLength = Optional.fromNullable(fuzzyPrefixLength).or(DEFAULT_FUZZY_PREFIX_LENGTH);
    this.fuzzyMaxExpansions = Optional.fromNullable(fuzzyMaxExpansions).or(DEFAULT_FUZZY_MAX_EXPANSIONS);
    this.tokenize = Optional.fromNullable(tokenize).or(DEFAULT_TOKENIZE);
}

From source file:org.jclouds.route53.domain.ResourceRecordSetIterable.java

private ResourceRecordSetIterable(Iterable<ResourceRecordSet> items, @Nullable NextRecord nextRecord) {
    this.items = checkNotNull(items, "items");
    this.nextRecord = Optional.fromNullable(nextRecord);
}

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

@Override
public Optional<OmniBuildInvocations> get(Path projectPath) {
    return Optional.fromNullable(this.buildInvocationsPerProject.get(projectPath));
}