Example usage for com.google.common.collect Iterables getOnlyElement

Introduction

In this page you can find the example usage for com.google.common.collect Iterables getOnlyElement.

Prototype

public static <T> T getOnlyElement(Iterable<T> iterable)

Source Link

Document

Returns the single element contained in iterable .

Usage

From source file:org.apache.beam.runners.core.ReplacementOutputs.java

public static Map<PValue, ReplacementOutput> singleton(List<TaggedPValue> original, PValue replacement) {
    TaggedPValue taggedReplacement = Iterables.getOnlyElement(replacement.expand());
    return ImmutableMap.<PValue, ReplacementOutput>builder().put(taggedReplacement.getValue(),
            ReplacementOutput.of(Iterables.getOnlyElement(original), taggedReplacement)).build();
}

From source file:com.axemblr.provisionr.cloudstack.core.Networks.java

/**
 * Returns the first network with the given name.
 *
 * @throws NoSuchElementException   if no network is found
 * @throws IllegalArgumentException if more networks with the same name are found
 *///from  ww  w.  jav  a2  s .c  om
public static Network getByName(CloudStackClient client, final String networkName) {
    Set<Network> networks = Sets.filter(client.getNetworkClient().listNetworks(), new Predicate<Network>() {
        @Override
        public boolean apply(Network input) {
            return input.getName().equals(networkName);
        }
    });
    return Iterables.getOnlyElement(networks);
}

From source file:org.apache.beam.sdk.extensions.sql.utils.RowAsserts.java

/** Asserts result contains single row with an long field. */
public static SerializableFunction<Iterable<Row>, Void> matchesScalar(long expected) {
    return records -> {
        Row row = Iterables.getOnlyElement(records);
        assertNotNull(row);/*from w w w  .java  2 s. c o  m*/
        assertEquals(expected, (long) row.getInt64(0));
        return null;
    };
}

From source file:com.cinchapi.common.collect.Multimaps.java

private static Object flatten(Collection<Object> value) {
    if (value.isEmpty()) {
        return null;
    } else if (value.size() == 1) {
        return Iterables.getOnlyElement(value);
    } else {/*w ww  .  ja v  a 2  s  . com*/
        return value;
    }
}

From source file:org.apache.beam.runners.core.construction.ReplacementOutputs.java

public static Map<PValue, ReplacementOutput> singleton(Map<TupleTag<?>, PValue> original, PValue replacement) {
    Entry<TupleTag<?>, PValue> originalElement = Iterables.getOnlyElement(original.entrySet());
    TupleTag<?> replacementTag = Iterables.getOnlyElement(replacement.expand().entrySet()).getKey();
    return Collections.singletonMap(replacement,
            ReplacementOutput.of(TaggedPValue.of(originalElement.getKey(), originalElement.getValue()),
                    TaggedPValue.of(replacementTag, replacement)));
}

From source file:com.wrmsr.wava.java.lang.tree.JTrees.java

public static JBlock jblockify(List<JStatement> statements) {
    if (statements.size() == 1) {
        return jblockify(Iterables.getOnlyElement(statements));
    } else {/*from  www  . j a  v  a 2s  .c  om*/
        return new JBlock(
                statements.stream().map(JTrees::jflatten).flatMap(List::stream).collect(toImmutableList()));
    }
}

From source file:brooklyn.entity.rebind.transformer.CompoundTransformerLoader.java

public static CompoundTransformer load(String contents) {
    CompoundTransformer.Builder builder = CompoundTransformer.builder();
    Iterable<Object> toplevel = Yamls.parseAll(contents);
    @SuppressWarnings("unchecked")
    Map<String, Map<?, ?>> rules = (Map<String, Map<?, ?>>) ((Map<?, ?>) Iterables.getOnlyElement(toplevel));
    for (Map.Entry<String, Map<?, ?>> entry : rules.entrySet()) {
        addRule(builder, entry.getKey(), entry.getValue());
    }//from   ww w  .  j a  v a 2  s.  c om
    return builder.build();
}

From source file:google.registry.util.TokenUtils.java

/** Generates a single token of a given {@link TokenType}. */
public static String createToken(TokenType type, StringGenerator generator) {
    return Iterables.getOnlyElement(createTokens(type, generator, 1));
}

From source file:com.google.devtools.build.android.xml.ResourcesAttribute.java

public static ResourcesAttribute from(SerializeFormat.DataValueXml proto) {
    Map.Entry<String, String> attribute = Iterables.getOnlyElement(proto.getAttributeMap().entrySet());
    return of(attribute.getKey(), attribute.getValue());
}

From source file:com.google.caliper.runner.worker.dryrun.DryRunModule.java

@Provides
@Reusable/*from   www .j  a  v  a 2 s. c o m*/
static Target provideTarget(Set<Experiment> experiments) {
    checkArgument(!experiments.isEmpty(), "Dry-run component bound no experiments.");

    Set<Target> targets = new HashSet<>();
    for (Experiment experiment : experiments) {
        targets.add(experiment.target());
    }

    checkArgument(targets.size() == 1, "All dry-run component experiments should have the same target. "
            + "Experiments for %s different targets were found.", targets.size());

    return Iterables.getOnlyElement(targets);
}