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

Introduction

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

Prototype

public abstract T get();

Source Link

Document

Returns the contained instance, which must be present.

Usage

From source file:com.sk89q.worldedit.world.biome.Biomes.java

/**
 * Find a biome that matches the given input name.
 *
 * @param biomes a list of biomes// w  w w  . j  av a 2s . c om
 * @param name the name to test
 * @param registry a biome registry
 * @return a biome or null
 */
@Nullable
public static BaseBiome findBiomeByName(Collection<BaseBiome> biomes, String name, BiomeRegistry registry) {
    checkNotNull(biomes);
    checkNotNull(name);
    checkNotNull(registry);

    Function<String, ? extends Number> compare = new LevenshteinDistance(name, false,
            LevenshteinDistance.STANDARD_CHARS);
    WeightedChoice<BaseBiome> chooser = new WeightedChoice<BaseBiome>(
            Functions.compose(compare, new BiomeName(registry)), 0);
    for (BaseBiome biome : biomes) {
        chooser.consider(biome);
    }
    Optional<Choice<BaseBiome>> choice = chooser.getChoice();
    if (choice.isPresent() && choice.get().getScore() <= 1) {
        return choice.get().getValue();
    } else {
        return null;
    }
}

From source file:org.spongepowered.api.util.text.OptBool.java

/**
 * Coerces the given {@code Optional&lt;Boolean&gt;} into one of the three stored states.
 *
 * @param bool The boolean//w  ww. j  a va 2 s . co m
 * @return The constructed Optional, or {@link Optional#absent()}
 */
public static Optional<Boolean> of(Optional<Boolean> bool) {
    if (bool.isPresent()) {
        return of(bool.get().booleanValue());
    } else {
        return ABSENT;
    }
}

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 {//  w w w . j  a va  2  s.c  o m
        return Optional.absent();
    }
}

From source file:com.treasuredata.client.TDClientException.java

private static final String formatErrorMessage(ErrorType errorType, String message, Optional<Exception> cause) {
    String rootCauseErrorMessage = cause.isPresent() ? " The root cause: " + cause.get().getMessage() : "";
    return String.format("[%s] %s%s", errorType.name(), message != null ? message : "", rootCauseErrorMessage);
}

From source file:org.raml.jaxrs.model.HttpVerb.java

/**
 * Same as {@link #fromString(String)}, but throws if there is no corresponding verb.
 *
 * @param httpMethod the method to pair//from  w ww . j av a  2s  .c o m
 * @return the corresponding http verb
 * @throws NoSuchElementException if there is no corresponding verb
 */
public static HttpVerb fromStringUnchecked(String httpMethod) {
    Optional<HttpVerb> verb = fromString(httpMethod);

    if (verb.isPresent())
        return verb.get();

    throw new NoSuchElementException(String.format("invalid http method: %s", httpMethod));
}

From source file:org.opendaylight.netconf.util.osgi.NetconfConfigUtil.java

private static InetSocketAddress parseAddress(final Optional<String> address, final Optional<String> port) {
    final int portNumber = Integer.valueOf(port.get());
    return new InetSocketAddress(address.get(), portNumber);
}

From source file:com.eucalyptus.util.FUtils.java

/**
 * Flatten a nested optional./*from  w  w w . j  ava  2s. co  m*/
 *
 * @param option The optional to flatten
 * @param <T> The resulting optional type
 * @return The optional
 */
@Nonnull
public static <T> Optional<T> flatten(@Nullable final Optional<? extends Optional<T>> option) {
    if (option != null && option.isPresent()) {
        return option.get();
    }
    return Optional.absent();
}

From source file:org.pau.assetmanager.utils.UserUtil.java

/**
 * @return the current user that is logged in in the application
 * WATCH OUT: To call the method the thread should be running in a servlet container in a ZK environment.
 *///from w  ww . j a v  a2s .com
public static User getExecutionUser() {
    String username = Executions.getCurrent().getUserPrincipal().getName();
    Optional<User> optionalUser = UsersBusiness.getUserByUsername(username);
    if (optionalUser.isPresent()) {
        return optionalUser.get();
    } else {
        String message = "The execution user with name '" + username + "' does not exist in the database";
        logger.error(message);
        throw new AssetManagerRuntimeException(message);
    }
}

From source file:org.opendaylight.alto.spce.network.util.DataHelper.java

/**
 * @param dataBroker/*from w w w  . j  a v a  2 s. c om*/
 * @param iid
 * @param type
 * @param <T>
 * @return The data of iid
 * @throws ReadDataFailedException
 */
public static <T extends DataObject> T readFromDataStore(DataBroker dataBroker, InstanceIdentifier<T> iid,
        LogicalDatastoreType type) throws ReadDataFailedException {
    ReadOnlyTransaction tx = dataBroker.newReadOnlyTransaction();
    Future<Optional<T>> future = tx.read(type, iid);
    try {
        if (future != null) {
            Optional<T> optional = future.get();
            if (optional.isPresent()) {
                return optional.get();
            }
        }
    } catch (InterruptedException | ExecutionException e) {
        e.printStackTrace();
    } finally {
        tx.close();
    }
    throw new ReadDataFailedException();
}

From source file:org.sonar.server.permission.PermissionPrivilegeChecker.java

public static void checkProjectAdminUserByComponentDto(UserSession userSession,
        Optional<ComponentDto> project) {
    if (project.isPresent()) {
        checkProjectAdminUserByComponentUuid(userSession, project.get().uuid());
    } else {//from w ww .  j a  v a  2  s  .  c  om
        checkGlobalAdminUser(userSession);
    }
}