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.locationtech.geogig.repository.Hints.java

public Optional<Serializable> get(final String key) {
    return Optional.fromNullable(hintsMap.get(key));
}

From source file:de.flapdoodle.logparser.stacktrace.StackLines.java

public Optional<More> more() {
    return Optional.fromNullable(_more);
}

From source file:com.technostar98.tcbot.bot.BotManager.java

public static Optional<ChannelManager> getChannelManager(String server, String channel) {
    return Optional.fromNullable(getBotOutputPipe(server).getChannelManager(channel));
}

From source file:ws.moor.swissvault.auth.AuthModule.java

@Provides
@RequestScoped//from   w  ww .j  a v  a2 s  .c  o  m
@AuthenticatedUser
private Optional<UserId> provideUserId(AuthCookieFactory cookieFactory, HttpServletRequest request) {
    return Optional.fromNullable(cookieFactory.extractUserId(request));
}

From source file:org.opendaylight.faas.fabric.general.FabricInstanceCache.java

Optional<UnderlayerNetworkType> getFabricType(FabricId fabricId) {
    Optional<FabricInstance> instance = Optional.fromNullable(cache.get(fabricId));
    if (instance.isPresent()) {
        return Optional.of(instance.get().getType());
    } else {/*w ww  .  j  av  a2 s.  co  m*/
        return Optional.absent();
    }
}

From source file:org.onosproject.store.flow.ReplicaInfo.java

/**
 * Creates a ReplicaInfo instance.//w w w .j  a v  a2 s . c  om
 *
 * @param master NodeId of the node where the master copy should be
 * @param backups list of NodeId, where backup copies should be placed
 */
public ReplicaInfo(NodeId master, List<NodeId> backups) {
    this.master = Optional.fromNullable(master);
    this.backups = checkNotNull(backups);
}

From source file:org.apache.aurora.scheduler.async.TaskGroup.java

synchronized Optional<String> peek() {
    return Optional.fromNullable(tasks.peek());
}

From source file:de.flapdoodle.guava.Expectations.java

/**
 * gives first value, if one value exist
 * gives defaultValue if empty or more than one value exist,
 * //from ww  w  .  j a va  2s. com
 * @param values
 * @return value
 */
public static <T> T oneIfOnlyOne(Iterator<T> iterator, T defaultValue) {
    return noneOrOneIfOnlyOne(iterator).or(Optional.fromNullable(defaultValue)).orNull();
}

From source file:ninja.leaping.configurate.commented.SimpleCommentedConfigurationNode.java

@Override
public Optional<String> getComment() {
    return Optional.fromNullable(comment);
}

From source file:org.geogit.api.RevPerson.java

/**
 * @return the email
 */
public Optional<String> getEmail() {
    return Optional.fromNullable(email);
}