Example usage for com.google.common.collect FluentIterable from

Introduction

In this page you can find the example usage for com.google.common.collect FluentIterable from.

Prototype

@Deprecated
@CheckReturnValue
public static <E> FluentIterable<E> from(FluentIterable<E> iterable)

Source Link

Document

Construct a fluent iterable from another fluent iterable.

Usage

From source file:com.spectralogic.ds3cli.command.CliCommandFactory.java

public static String listAllCommands() {
    final StringBuilder commandHelp = new StringBuilder("Installed Commands: ");

    final FluentIterable<String> commands = FluentIterable.from(getAllCommands())
            .transform(new Function<CliCommand, String>() {
                @Nullable//ww w  .  j a v  a 2 s  .  c  om
                @Override
                public String apply(@Nullable final CliCommand input) {
                    return CaseFormat.UPPER_CAMEL.to(CaseFormat.LOWER_UNDERSCORE,
                            input.getClass().getSimpleName());
                }
            });
    final Joiner joiner = Joiner.on(", ");
    commandHelp.append(joiner.join(commands));
    return commandHelp.toString();
}

From source file:com.facebook.buck.rules.keys.StringifyAlterRuleKey.java

@VisibleForTesting
static Iterable<Path> findAbsolutePaths(Object val) {
    if (val instanceof Path) {
        Path path = (Path) val;
        if (path.isAbsolute()) {
            return Collections.singleton(path);
        }/*from  www  .  j  a  va  2  s . com*/
    } else if (val instanceof PathSourcePath) {
        return findAbsolutePaths(((PathSourcePath) val).getRelativePath());
    } else if (val instanceof Iterable) {
        return FluentIterable.from((Iterable<?>) val)
                .transformAndConcat(StringifyAlterRuleKey::findAbsolutePaths);
    } else if (val instanceof Map) {
        Map<?, ?> map = (Map<?, ?>) val;
        Iterable<?> allSubValues = Iterables.concat(map.keySet(), map.values());
        return FluentIterable.from(allSubValues).transformAndConcat(StringifyAlterRuleKey::findAbsolutePaths);
    } else if (val instanceof Optional) {
        Optional<?> optional = (Optional<?>) val;
        if (optional.isPresent()) {
            return findAbsolutePaths(optional.get());
        }
    }

    return ImmutableList.of();
}

From source file:org.immutables.value.processor.meta.ExtensionLoader.java

static ImmutableSet<String> findExtensions(String resource) {
    List<String> annotations = Lists.newArrayList();

    ClassLoader classLoader = ExtensionLoader.class.getClassLoader();
    try {/*  w w  w.j  av a2 s. c o  m*/
        Enumeration<URL> resources = classLoader.getResources(resource);
        while (resources.hasMoreElements()) {
            URL nextElement = resources.nextElement();
            String lines = Resources.toString(nextElement, StandardCharsets.UTF_8);
            annotations.addAll(RESOURCE_SPLITTER.splitToList(lines));
        }
    } catch (IOException cannotReadFromClasspath) {
        // we ignore this as we did or best effort
        // and there are no plans to halt whole compilation
    }
    return FluentIterable.from(annotations).toSet();
}

From source file:com.arpnetworking.utility.SampleUtils.java

/**
 * Converts all of the samples to a single unit.
 *
 * @param samples samples to convert//from  ww w.  j  a va 2  s. c o m
 * @return list of samples with a unified unit
 */
public static List<Quantity> unifyUnits(final List<Quantity> samples) {
    //This is a 2-pass operation:
    //First pass is to grab the smallest unit in the samples
    //Second pass is to convert everything to that unit
    Optional<Unit> smallestUnit = Optional.absent();
    for (final Quantity sample : samples) {
        if (!smallestUnit.isPresent()) {
            smallestUnit = sample.getUnit();
        } else if (sample.getUnit().isPresent()
                && smallestUnit.get().getSmallerUnit(sample.getUnit().get()) != smallestUnit.get()) {
            smallestUnit = sample.getUnit();
        }
    }

    if (smallestUnit.isPresent()) {
        return FluentIterable.from(samples).transform(new SampleConverter(smallestUnit.get())).toList();
    }

    return samples;
}

From source file:org.sfs.util.ConfigHelper.java

public static Iterable<String> getArrayFieldOrEnv(JsonObject config, String name,
        Iterable<String> defaultValue) {
    String envVar = formatEnvVariable(name);
    //USED_ENV_VARS.add(envVar);
    if (config.containsKey(name)) {
        JsonArray values = config.getJsonArray(name);
        if (values != null) {
            Iterable<String> iterable = FluentIterable.from(values).filter(Predicates.notNull())
                    .filter(input -> input instanceof String).transform(input -> input.toString());
            log(name, envVar, name, iterable);
            return iterable;
        }//from ww  w  . j av a2s .co  m
    } else {
        String value = System.getenv(envVar);
        if (value != null) {
            log(name, envVar, envVar, value);
            return Splitter.on(',').split(value);
        }
    }
    log(name, envVar, null, defaultValue);
    return defaultValue;
}

From source file:org.eclipse.buildship.core.configuration.GradleProjectBuilder.java

/**
 * Configures the builder on the target project if it was not added previously.
 * <p/>//from  www  . j  a v  a  2 s.c  om
 * This method requires the {@link org.eclipse.core.resources.IWorkspaceRoot} scheduling rule.
 *
 * @param project the target project
 */
public static void configureOnProject(IProject project) {
    try {
        Preconditions.checkState(project.isOpen());

        // check if the builder is already registered with the project
        IProjectDescription description = project.getDescription();
        List<ICommand> buildSpecs = Arrays.asList(description.getBuildSpec());
        boolean exists = FluentIterable.from(buildSpecs).anyMatch(new Predicate<ICommand>() {

            @Override
            public boolean apply(ICommand command) {
                return command.getBuilderName().equals(ID);
            }
        });

        // register the builder with the project if it is not already registered
        if (!exists) {
            ICommand buildSpec = description.newCommand();
            buildSpec.setBuilderName(ID);
            ImmutableList<ICommand> newBuildSpecs = ImmutableList.<ICommand>builder().addAll(buildSpecs)
                    .add(buildSpec).build();
            description.setBuildSpec(newBuildSpecs.toArray(new ICommand[newBuildSpecs.size()]));
            project.setDescription(description, new NullProgressMonitor());
        }
    } catch (CoreException e) {
        CorePlugin.logger()
                .error(String.format("Failed to add Gradle Project Builder to project %s.", project.getName()));
    }
}

From source file:google.registry.export.ExportConstants.java

/** Returns the names of kinds to import into reporting tools (e.g. BigQuery). */
public static ImmutableSet<String> getReportingKinds() {
    return FluentIterable.from(EntityClasses.ALL_CLASSES).filter(hasAnnotation(ReportedOn.class))
            .filter(not(hasAnnotation(VirtualEntity.class))).transform(CLASS_TO_KIND_FUNCTION)
            .toSortedSet(Ordering.natural());
}

From source file:org.androidtransfuse.model.r.RResourceComposite.java

public RResourceComposite(RResource... resources) {
    this.resources = FluentIterable.from(Arrays.asList(resources)).filter(Predicates.notNull()).toList();
}

From source file:ec.nbdemetra.ui.nodes.Nodes.java

@Nonnull
public static FluentIterable<Node> breadthFirstIterable(@Nonnull Node root) {
    return FluentIterable.from(root.isLeaf() ? Collections.singleton(root) : new BreadthFirstIterable(root));
}

From source file:com.brighttag.agathon.resources.ServiceUnavailableExceptionMapper.java

private static String getMessage(Throwable exception) {
    String name = NAME_JOINER//from  w ww .ja va  2  s  .  com
            .join(FluentIterable.from(Throwables.getCausalChain(exception)).transform(EXCEPTION_NAME).toList());
    Throwable rootCause = Throwables.getRootCause(exception);
    return String.format("%s: %s", name, rootCause.getMessage());
}