Example usage for com.google.common.base Optional of

Introduction

In this page you can find the example usage for com.google.common.base Optional of.

Prototype

public static <T> Optional<T> of(T reference)

Source Link

Document

Returns an Optional instance containing the given non-null reference.

Usage

From source file:rickbw.incubator.choice.Choices.java

public static <F, T> Optional<T> map(final Optional<F> from, final Function<? super F, ? extends T> func) {
    if (from.isPresent()) {
        final T result = func.apply(from.get());
        return Optional.of(result);
    } else {/*from   w  w w  .j ava2 s. co  m*/
        return Optional.absent();
    }
}

From source file:extrabiomes.api.Biomes.java

/**
 * Retrieves a custom biome//from  ww w  .  j av  a2 s  .c  om
 * 
 * @param targetBiome
 *            The string name of the targertBiome. See
 *            {@link GetBiomeIDEvent#targetBiome} for valid values.
 * @return The requested biome. If the biome does not exist, the
 *         <code>Optional</code> value will not be present.
 */
public static Optional<BiomeGenBase> getBiome(String targetBiome) {
    final GetBiomeIDEvent event = new GetBiomeIDEvent(targetBiome);
    Api.getExtrabiomesXLEventBus().post(event);
    if (event.biomeID <= 0)
        return Optional.absent();
    return Optional.of(BiomeGenBase.biomeList[event.biomeID]);
}

From source file:org.apache.distributedlog.util.CommandLineUtils.java

public static Optional<String> getOptionalStringArg(CommandLine cmdline, String arg) {
    if (cmdline.hasOption(arg)) {
        return Optional.of(cmdline.getOptionValue(arg));
    } else {// w  w  w . java 2  s  .  com
        return Optional.absent();
    }
}

From source file:com.github.radium226.common.Either.java

public static <L, R> Either<L, R> left(L left) {
    return new Either(Optional.of(left), Optional.absent());
}

From source file:com.google.caliper.platform.dalvik.DalvikModule.java

@Provides
@Singleton//from   www .ja  v a  2  s  .c o  m
public static Optional<DalvikPlatform> provideOptionalPlatform() {
    if (System.getProperty("java.specification.name").equals("Dalvik Core Library")) {
        return Optional.of(new DalvikPlatform());
    } else {
        return Optional.absent();
    }
}

From source file:jetcd.EtcdClientFactory.java

public static EtcdClient newInstance(final Client client, final String server) {
    return new EtcdClientImpl(Optional.of(client), server);
}

From source file:hyper.momitor.util.etcd.HMEtcdClientFactory.java

public static HMEtcdClient newInstance(final Client client, final String server) {
    return new HMEtcdClientImpl(Optional.of(client), server);
}

From source file:extrabiomes.handlers.ConfigurationHandler.java

public static void init(File configFile) {
    Optional<EnhancedConfiguration> optionalConfig = Optional.absent();

    try {//  w  ww  .  j a  v a2  s.  c o m
        optionalConfig = Optional.of(new EnhancedConfiguration(configFile));
        final EnhancedConfiguration configuration = optionalConfig.get();

        for (final BiomeSettings setting : BiomeSettings.values()) {
            setting.load(configuration);
        }

        for (final DecorationSettings setting : DecorationSettings.values()) {
            setting.load(configuration);
        }

        for (final BlockSettings setting : BlockSettings.values()) {
            setting.load(configuration);
        }

        for (final ItemSettings setting : ItemSettings.values()) {
            setting.load(configuration);
        }

        configuration.addCustomCategoryComment("saplingreplanting",
                "Settings to configure the chance that saplings will replant themselves up despawning on valid soil.");
        for (final SaplingSettings setting : SaplingSettings.values()) {
            setting.load(configuration);
        }

        for (final ModuleControlSettings setting : ModuleControlSettings.values()) {
            setting.load(configuration);
        }

        Property bigTreeSaplingDropRateProperty = configuration.get(Configuration.CATEGORY_GENERAL,
                "Relative sapling drops", false);
        bigTreeSaplingDropRateProperty.comment = "Setting relative sapling drops to true will decrease the amount of saplings dropped by decaying fir and redwood leaf blocks to a more reasonable amount.";
        GeneralSettings.bigTreeSaplingDropModifier = bigTreeSaplingDropRateProperty.getBoolean(false);

        //
        Property consoleCommandsDisabled = configuration.get(Configuration.CATEGORY_GENERAL,
                "DisableConsoleCommands", true);
        consoleCommandsDisabled.comment = "Set to false to enable console commands.";
        GeneralSettings.consoleCommandsDisabled = consoleCommandsDisabled.getBoolean(true);

    } catch (final Exception e) {
        LogHelper.log(Level.SEVERE, e, "%s had had a problem loading its configuration", Reference.MOD_NAME);
    } finally {
        if (optionalConfig.isPresent())
            optionalConfig.get().save();
    }
}

From source file:org.locationtech.geogig.storage.impl.Blobs.java

public static Optional<String> getBlobAsString(BlobStore blobStore, String blobName) {
    Optional<byte[]> blob = getBlob(blobStore, blobName);
    Optional<String> str = Optional.absent();
    if (blob.isPresent()) {
        str = Optional.of(new String(blob.get(), Charsets.UTF_8));
    }/*from   w  ww  . j a  v  a2s  .c om*/
    return str;
}

From source file:com.facebook.presto.hive.util.DirectoryEntry.java

public static DirectoryEntry entryForFile(FileStatus fileStatus, BlockLocation[] blockLocation) {
    checkNotNull(fileStatus, "fileStatus is null");
    checkNotNull(blockLocation, "blockLocations is null");
    return new DirectoryEntry(fileStatus, Optional.of(blockLocation));
}