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:io.mesosphere.mesos.frameworks.cassandra.ZooKeeperSeedProviderConfig.java

private static Optional<String> optionalString(String key, Map<String, String> parameters) {
    return Optional.fromNullable(parameters.get(key));
}

From source file:org.retrostore.android.net.DataFetcher.java

public static Optional<DataFetcher> get() {
    // Might be null if the app got cleaned up but the details activity was resumed.
    return Optional.fromNullable(sInstance);
}

From source file:org.geogit.web.SingleRepositoryProvider.java

@Override
public Optional<GeoGIT> getGeogit(Request request) {
    return Optional.fromNullable(geogit);
}

From source file:com.almuradev.guide.content.PageRegistry.java

public static Optional<Page> getPage(String identifier) {
    return Optional.fromNullable(PAGES.get(identifier));
}

From source file:com.shufudong.GuavaExample.collect.OptionalExample.java

/**
 * @param object//from  ww  w  . j  a v a  2  s  .  co m
 * @return
 * @category fromNullable?object??
 * ,?fromNullable???
 * @throw
 */
public static Object fromNullable(Object object) {
    return Optional.fromNullable(object).or("?object,??.");
}

From source file:org.onos.yangtools.yang.data.impl.codec.EnumStringCodec.java

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

From source file:org.onos.yangtools.yang.data.impl.codec.BooleanStringCodec.java

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

From source file:google.registry.request.auth.AuthResult.java

static AuthResult create(AuthLevel authLevel, @Nullable UserAuthInfo userAuthInfo) {
    if (authLevel == AuthLevel.USER) {
        checkNotNull(userAuthInfo);/*from  ww  w  .  java  2  s .  com*/
    }
    return new AutoValue_AuthResult(authLevel, Optional.fromNullable(userAuthInfo));
}

From source file:com.kegare.frozenland.util.Version.java

private static void initialize() {
    CURRENT = Optional.of(Strings.nullToEmpty(Frozenland.metadata.version));
    LATEST = Optional.fromNullable(CURRENT.orNull());

    File file = FrozenUtils.getModContainer().getSource();

    if (file != null && file.exists()) {
        if (file.isFile()) {
            String name = FilenameUtils.getBaseName(file.getName());

            if (StringUtils.endsWithIgnoreCase(name, "dev")) {
                DEV_DEBUG = true;//from   w w  w . j  av a2  s .c  o  m
            }
        } else if (file.isDirectory()) {
            DEV_DEBUG = true;
        }
    } else if (!FMLForgePlugin.RUNTIME_DEOBF) {
        DEV_DEBUG = true;
    }

    if (Frozenland.metadata.version.endsWith("dev")) {
        DEV_DEBUG = true;
    } else if (DEV_DEBUG) {
        Frozenland.metadata.version += "-dev";
    }
}

From source file:org.opendaylight.yangtools.yang.data.operations.DataOperations.java

public static Optional<ContainerNode> modify(ContainerSchemaNode schema, ContainerNode stored,
        ContainerNode modified, ModifyAction defaultOperation) throws DataModificationException {

    OperationStack operations = new OperationStack(defaultOperation);

    return new ContainerNodeModification().modify(schema, Optional.fromNullable(stored),
            Optional.fromNullable(modified), operations);
}