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

Introduction

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

Prototype

@Beta
public abstract T or(Supplier<? extends T> supplier);

Source Link

Document

Returns the contained instance if it is present; supplier.get() otherwise.

Usage

From source file:com.arpnetworking.clusteraggregator.AggDataUnifier.java

private static Optional<Unit> getSmaller(final Optional<Unit> a, final Optional<Unit> b) {
    if (a.isPresent() && b.isPresent()) {
        return a.get().isSmallerThan(b.get()) ? a : b;
    } else {/* ww  w . ja  v a2  s  .  c  o  m*/
        return a.or(b);
    }
}

From source file:com.amazonaws.services.dynamodbv2.streams.connectors.CommandLineInterface.java

@VisibleForTesting
static AwsClientBuilder.EndpointConfiguration createEndpointConfiguration(Region region,
        Optional<String> endpoint, String endpointPrefix) {
    return new AwsClientBuilder.EndpointConfiguration(
            endpoint.or("https://" + region.getServiceEndpoint(endpointPrefix)), region.getName());
}

From source file:zipkin.autoconfigure.storage.elasticsearch.http.ZipkinElasticsearchHttpStorageAutoConfiguration.java

public static Optional<String> regionFromAwsUrls(List<String> hosts) {
    Optional<String> awsRegion = Optional.absent();
    for (String url : hosts) {
        Matcher matcher = AWS_URL.matcher(url);
        if (matcher.find()) {
            String matched = matcher.group(1);
            checkArgument(awsRegion.or(matched).equals(matched), "too many regions: saw '%s' and '%s'",
                    awsRegion, matched);
            awsRegion = Optional.of(matcher.group(1));
        } else {/*w  w  w  .  j  a va  2  s  .  c o m*/
            checkArgument(!awsRegion.isPresent(), "mismatched regions; saw '%s' but no awsRegion found in '%s'",
                    awsRegion.orNull(), url);
        }
    }
    return awsRegion;
}

From source file:org.openqa.selenium.safari.SafariDriverExtension.java

/**
 * @param customDataDir Location of the data directory for a custom Safari
 *     installation. If omitted, t/*from w w  w  . ja  va2  s.  c  om*/
 * @return The directory that the SafariDriver extension should be installed
 *     to for the current platform.
 * @throws IllegalStateException If the extension cannot be installed on the
 *     current platform.
 * @throws IOException If an I/O error occurs.
 */
private static File getInstallDirectory(Optional<File> customDataDir) throws IOException {
    File dataDir = customDataDir.or(getSafariDataDirectory());
    checkState(dataDir.isDirectory(), "The expected Safari data directory does not exist: %s",
            dataDir.getAbsolutePath());

    File extensionsDir = new File(dataDir, "Extensions");
    if (!extensionsDir.isDirectory()) {
        extensionsDir.mkdir();
    }
    return extensionsDir;
}

From source file:eu.eubrazilcc.lvl.service.cache.StatisticsCache.java

public static Map<String, List<SimpleStat>> sandflyStats() {
    Optional<Map<String, List<SimpleStat>>> stats = absent();
    try {//from w  w w .ja  v a2  s. co  m
        stats = CACHE.get(SANDFLY_COLLECTION);
    } catch (ExecutionException e) {
        LOGGER.error("Failed to get collection statistics from cache", e);
    }
    return stats.or(new Hashtable<String, List<SimpleStat>>());
}

From source file:eu.eubrazilcc.lvl.service.cache.StatisticsCache.java

public static Map<String, List<SimpleStat>> leishmaniaStats() {
    Optional<Map<String, List<SimpleStat>>> stats = absent();
    try {//ww  w .  j  av  a 2 s. c o m
        stats = CACHE.get(LEISHMANIA_COLLECTION);
    } catch (ExecutionException e) {
        LOGGER.error("Failed to get collection statistics from cache", e);
    }
    return stats.or(new Hashtable<String, List<SimpleStat>>());
}

From source file:org.locationtech.geogig.storage.postgresql.PGCache.java

public static PGCache build(ConfigDatabase configdb) {
    Optional<Long> maxSize = configdb.getGlobal(Environment.KEY_ODB_BYTE_CACHE_MAX_SIZE, Long.class);
    Optional<Integer> concurrencyLevel = configdb.getGlobal(Environment.KEY_ODB_BYTE_CACHE_CONCURRENCY_LEVEL,
            Integer.class);
    Optional<Integer> expireSeconds = configdb.getGlobal(Environment.KEY_ODB_BYTE_CACHE_EXPIRE_SECONDS,
            Integer.class);
    Optional<Integer> initialCapacity = configdb.getGlobal(Environment.KEY_ODB_BYTE_CACHE_INITIAL_CAPACITY,
            Integer.class);

    Integer initialCapacityCount = initialCapacity.or(1_000_000);
    Integer concurrencyLevel2 = concurrencyLevel.or(16);
    Long maxWeightBytes = maxSize.or(defaultCacheSize());

    return build(initialCapacityCount, concurrencyLevel2, maxWeightBytes, expireSeconds);
}

From source file:zipkin.autoconfigure.storage.elasticsearch.aws.ZipkinElasticsearchAwsStorageAutoConfiguration.java

static Optional<String> regionFromAwsUrls(List<String> hosts) {
    Optional<String> awsRegion = Optional.absent();
    for (String url : hosts) {
        Matcher matcher = AWS_URL.matcher(url);
        if (matcher.find()) {
            String matched = matcher.group(1);
            checkArgument(awsRegion.or(matched).equals(matched), "too many regions: saw '%s' and '%s'",
                    awsRegion, matched);
            awsRegion = Optional.of(matcher.group(1));
        } else {/*  w  w w.  j av  a 2s .  c  o  m*/
            checkArgument(!awsRegion.isPresent(), "mismatched regions; saw '%s' but no awsRegion found in '%s'",
                    awsRegion.orNull(), url);
        }
    }
    return awsRegion;
}

From source file:com.publicuhc.pluginframework.util.YamlUtil.java

/**
 * Loads the given file from the harddrive with it's defaults set to the JAR version (and saved to the HDD)
 *
 * @param path the path to the file to load
 * @param loader the classloader to load from
 * @param dataDir the directory to save/load from
 *
 * @return optional fileconfiguration. Absent if jar AND hdd version don't exist
 * @throws IOException//from  w ww. j a va  2  s. co m
 * @throws InvalidConfigurationException if HDD or JAR file failed to parse
 */
public static Optional<FileConfiguration> loadConfigWithDefaults(String path, ClassLoader loader, File dataDir)
        throws IOException, InvalidConfigurationException {
    Optional<YamlConfiguration> jarOptional = YamlUtil.loadYamlFromJAR(path, loader);

    Optional<YamlConfiguration> hardDriveOptional = YamlUtil.loadYamlFromDir(path, dataDir);

    if (!hardDriveOptional.isPresent() && !jarOptional.isPresent()) {
        return Optional.absent();
    }

    YamlConfiguration hardDrive = hardDriveOptional.or(new YamlConfiguration());

    if (jarOptional.isPresent()) {
        YamlConfiguration jar = jarOptional.get();
        hardDrive.setDefaults(jar);
        hardDrive.options().copyDefaults(true);
    }

    YamlUtil.saveConfiguration(hardDrive, dataDir, path);

    return Optional.of((FileConfiguration) hardDrive);
}

From source file:org.apache.gobblin.util.PropertiesUtils.java

/**
 * Extract all the keys that start with a <code>prefix</code> in {@link Properties} to a new {@link Properties}
 * instance.//from ww w  .  java2  s.c o m
 *
 * @param properties the given {@link Properties} instance
 * @param prefix of keys to be extracted
 * @return a {@link Properties} instance
 */
public static Properties extractPropertiesWithPrefix(Properties properties, Optional<String> prefix) {
    Preconditions.checkNotNull(properties);
    Preconditions.checkNotNull(prefix);

    Properties extractedProperties = new Properties();
    for (Map.Entry<Object, Object> entry : properties.entrySet()) {
        if (StringUtils.startsWith(entry.getKey().toString(), prefix.or(StringUtils.EMPTY))) {
            extractedProperties.put(entry.getKey().toString(), entry.getValue());
        }
    }

    return extractedProperties;
}