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:extrabiomes.module.fabrica.scarecrow.ItemScarecrow.java

private static boolean spawnCreature(World world, double x, double y, double z) {
    //{/*from w  w w . j a  v  a 2 s .co  m*/
    final Optional<Entity> entity = Optional.fromNullable(EntityList.createEntityByName(NAME, world));

    if (entity.isPresent()) {
        entity.get().setLocationAndAngles(x, y, z, world.rand.nextFloat() * 360.0F, 0.0F);
        world.spawnEntityInWorld(entity.get());
    }

    return entity.isPresent();
    //}
}

From source file:google.registry.export.sheet.SheetModule.java

@Provides
@Parameter("id")
static Optional<String> provideId(HttpServletRequest req) {
    return Optional.fromNullable(emptyToNull(req.getParameter("id")));
}

From source file:co.cask.cdap.common.http.SecurityRequestContext.java

/**
 * @return the userId set on the current thread
 *//* ww  w  . j av a  2 s .c  o  m*/
public static Optional<String> getUserId() {
    return Optional.fromNullable(userId.get());
}

From source file:com.github.nethad.clustermeister.api.impl.JobFactory.java

public static <T> Job<T> create(String name, Map<String, Object> jobData) {
    return new JobImpl(name, Optional.fromNullable(jobData));
}

From source file:org.puder.trs80.configuration.KeyboardLayout.java

public static Optional<KeyboardLayout> fromId(int id) {
    return Optional.fromNullable(mapped.get(id, null));
}

From source file:google.registry.tldconfig.idn.LanguageValidator.java

/** Return the language validator for the given language code (if one exists). */
static Optional<LanguageValidator> get(String language) {
    return Optional.fromNullable(LANGUAGE_VALIDATORS.get(language));
}

From source file:org.opendaylight.yangtools.yang.data.impl.codec.UnionStringCodec.java

static TypeDefinitionAwareCodec<?, UnionTypeDefinition> from(final UnionTypeDefinition normalizedType) {
    return new UnionStringCodec(Optional.fromNullable(normalizedType));
}

From source file:com.google.devtools.build.xcode.util.Mapping.java

/**
 * Returns the value mapped to the given key for a map. If the mapping is not present, an absent
 * {@code Optional} is returned.// w w w  .j  av  a  2  s .c  om
 * @throws NullPointerException if the map or key argument is null
 */
public static <K, V> Optional<V> of(Map<K, V> map, K key) {
    Preconditions.checkNotNull(key);
    return Optional.fromNullable(map.get(key));
}

From source file:io.mesosphere.mesos.frameworks.cassandra.scheduler.util.Env.java

@NotNull
public static Optional<String> option(@NotNull final String key) {
    return Optional.fromNullable(System.getenv(key));
}

From source file:com.facebook.buck.timing.DefaultPerfTimer.java

private static boolean jvmSupportsCpuTime() {
    if (jvmSupportsCpuTime == TriState.UNSPECIFIED) {
        synchronized (lock) {
            if (jvmSupportsCpuTime == TriState.UNSPECIFIED) {
                bean = Optional.fromNullable(ManagementFactory.getThreadMXBean());
                jvmSupportsCpuTime = TriState
                        .forBooleanValue(bean.isPresent() && bean.get().isThreadCpuTimeSupported());
                if (jvmSupportsCpuTime.asBoolean()) {
                    bean.get().setThreadCpuTimeEnabled(true);
                }/*w  ww.j a  v a2 s.c  o  m*/
            }
        }
    }
    return jvmSupportsCpuTime.asBoolean();
}