Example usage for com.google.common.collect ImmutableList isEmpty

Introduction

In this page you can find the example usage for com.google.common.collect ImmutableList isEmpty.

Prototype

boolean isEmpty();

Source Link

Document

Returns true if this list contains no elements.

Usage

From source file:eu.numberfour.n4js.generator.headless.N4HeadlessCompiler.java

/**
 * Recursive algorithm//from www .j a  v  a 2 s  .  com
 *
 * @param p
 *            current project
 * @param visited
 *            set of projects already processed.
 * @param validProjects
 *            set of valid projects (the ones given to be ordered)
 * @param preconditionTo
 *            inverse of dependency
 * @param dependency
 *            inverse of preconditionTo
 * @param dependencyfree
 *            - projects which don't depend on others.
 */
private static void recCollect(IN4JSProject p, HashSet<IN4JSProject> visited,
        HashSet<IN4JSProject> validProjects, HashSet<IN4JSProject> unresolvedDependencies,
        HashMultimap<IN4JSProject, IN4JSProject> preconditionTo,
        HashMultimap<IN4JSProject, IN4JSProject> dependency, LinkedList<IN4JSProject> dependencyfree) {

    // already done?
    if (visited.contains(p)) {
        // Cycle detection later ?
        return;
    }
    visited.add(p);

    // build dependencies && inverse dependencies.
    ImmutableList<? extends IN4JSProject> dependencies = p.getDependenciesAndImplementedApis();
    if (dependencies.isEmpty()) {
        dependencyfree.add(p);
    } else {
        for (IN4JSProject dep : dependencies) {
            dependency.put(p, dep);
            preconditionTo.put(dep, p);
            if (!validProjects.contains(dep)) {
                // found a dependency on a project which is not part of the build.
                unresolvedDependencies.add(dep);
            }
            // recursive call:
            recCollect(dep, visited, validProjects, unresolvedDependencies, preconditionTo, dependency,
                    dependencyfree);
        }
    }
}

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From source file:com.arpnetworking.tsdcore.sinks.MetricNameFilteringSink.java

/**
 * {@inheritDoc}//from  w  w  w  . j a  v a2s .c  om
 */
@Override
public void recordAggregateData(final PeriodicData periodicData) {
    final ImmutableList.Builder<AggregatedData> filteredDataBuilder = ImmutableList.builder();
    for (final AggregatedData datum : periodicData.getData()) {
        final String metric = datum.getFQDSN().getMetric();
        final Boolean cachedResult = _cachedFilterResult.getUnchecked(metric);
        if (cachedResult) {
            filteredDataBuilder.add(datum);
        }
    }

    final ImmutableList.Builder<Condition> filteredConditionsBuilder = ImmutableList.builder();
    for (final Condition condition : periodicData.getConditions()) {
        final String metric = condition.getFQDSN().getMetric();
        final Boolean cachedResult = _cachedFilterResult.getUnchecked(metric);
        if (cachedResult) {
            filteredConditionsBuilder.add(condition);
        }
    }
    final ImmutableList<AggregatedData> filteredData = filteredDataBuilder.build();
    final ImmutableList<Condition> filteredConditions = filteredConditionsBuilder.build();
    if (!filteredData.isEmpty() || !filteredConditions.isEmpty()) {
        _sink.recordAggregateData(PeriodicData.Builder.clone(periodicData, new PeriodicData.Builder())
                .setData(filteredData).setConditions(filteredConditions).build());
    }
}

---

From source file:org.locationtech.geogig.api.RevTreeImpl.java

@Override
public Iterator<Node> children() {
    Preconditions.checkState(!buckets().isPresent());
    ImmutableList<Node> trees = trees().or(ImmutableList.<Node>of());
    ImmutableList<Node> features = features().or(ImmutableList.<Node>of());
    if (trees.isEmpty()) {
        return features.iterator();
    }/* ww w.j  ava  2  s .  c om*/
    if (features.isEmpty()) {
        return trees.iterator();
    }
    return Iterators.mergeSorted(ImmutableList.of(trees.iterator(), features.iterator()), ordering);
}

---

From source file:com.arpnetworking.tsdcore.sinks.ServiceNameFilteringSink.java

/**
 * {@inheritDoc}//from   w  w w .j a  va2  s.c  om
 */
@Override
public void recordAggregateData(final PeriodicData periodicData) {
    final ImmutableList.Builder<AggregatedData> filteredDataBuilder = ImmutableList.builder();
    for (final AggregatedData datum : periodicData.getData()) {
        final String service = datum.getFQDSN().getService();
        final Boolean cachedResult = _cachedFilterResult.getUnchecked(service);
        if (cachedResult) {
            filteredDataBuilder.add(datum);
        }
    }

    final ImmutableList.Builder<Condition> filteredConditionsBuilder = ImmutableList.builder();
    for (final Condition condition : periodicData.getConditions()) {
        final String service = condition.getFQDSN().getService();
        final Boolean cachedResult = _cachedFilterResult.getUnchecked(service);
        if (cachedResult) {
            filteredConditionsBuilder.add(condition);
        }
    }

    final ImmutableList<AggregatedData> filteredData = filteredDataBuilder.build();
    final ImmutableList<Condition> filteredConditions = filteredConditionsBuilder.build();
    if (!filteredData.isEmpty() || !filteredConditions.isEmpty()) {
        _sink.recordAggregateData(PeriodicData.Builder.clone(periodicData, new PeriodicData.Builder())
                .setData(filteredData).setConditions(filteredConditions).build());
    }
}

---

From source file:org.jclouds.route53.domain.ChangeBatch.java

private ChangeBatch(Optional<String> comment, ImmutableList<ActionOnResourceRecordSet> changes) {
    this.comment = checkNotNull(comment, "comment");
    this.changes = checkNotNull(changes, "changes%s", comment.isPresent() ? " for %s " + comment.get() : "");
    checkArgument(!changes.isEmpty(), "no changes%s", comment.isPresent() ? " for %s " + comment.get() : "");
}

---

From source file:com.google.javascript.rhino.jstype.TemplateTypeMap.java

/**
 * Concatenates two ImmutableList instances. If either input is empty, the
 * other is returned; otherwise, a new ImmutableList instance is created that
 * contains the contents of both arguments.
 *///  w w w .  j  a v  a  2s .c o m
private <T> ImmutableList<T> concatImmutableLists(ImmutableList<T> first, ImmutableList<T> second) {
    if (first.isEmpty()) {
        return second;
    }
    if (second.isEmpty()) {
        return first;
    }
    ImmutableList.Builder<T> builder = ImmutableList.builder();
    builder.addAll(first);
    builder.addAll(second);
    return builder.build();
}

---

From source file:org.onosproject.net.intent.impl.ConnectivityIntentCompiler.java

/**
 * Computes a path between two ConnectPoints.
 *
 * @param intent intent on which behalf path is being computed
 * @param one    start of the path//  www  .  j  a v a 2s  .  co m
 * @param two    end of the path
 * @return Path between the two
 * @throws PathNotFoundException if a path cannot be found
 */
protected Path getPath(ConnectivityIntent intent, ElementId one, ElementId two) {
    Set<Path> paths = pathService.getPaths(one, two, weight(intent.constraints()));
    final List<Constraint> constraints = intent.constraints();
    ImmutableList<Path> filtered = FluentIterable.from(paths).filter(new Predicate<Path>() {
        @Override
        public boolean apply(Path path) {
            return checkPath(path, constraints);
        }
    }).toList();
    if (filtered.isEmpty()) {
        throw new PathNotFoundException("No packet path from " + one + " to " + two);
    }
    // TODO: let's be more intelligent about this eventually
    return filtered.iterator().next();
}

---

From source file:com.squareup.wire.schema.Options.java

/** Returns an object of the same type as {@code o}, or null if it is not retained. */
private Object retainAll(Schema schema, MarkSet markSet, ProtoType type, Object o) {
    if (!markSet.contains(type)) {
        return null; // Prune this type.

    } else if (o instanceof Map) {
        ImmutableMap.Builder<ProtoMember, Object> builder = ImmutableMap.builder();
        for (Map.Entry<?, ?> entry : ((Map<?, ?>) o).entrySet()) {
            ProtoMember protoMember = (ProtoMember) entry.getKey();
            if (!markSet.contains(protoMember))
                continue; // Prune this field.
            Field field = schema.getField(protoMember);
            Object retainedValue = retainAll(schema, markSet, field.type(), entry.getValue());
            if (retainedValue != null) {
                builder.put(protoMember, retainedValue); // This retained field is non-empty.
            }/*www  . ja  v  a2s.  c  o m*/
        }
        ImmutableMap<ProtoMember, Object> map = builder.build();
        return !map.isEmpty() ? map : null;

    } else if (o instanceof List) {
        ImmutableList.Builder<Object> builder = ImmutableList.builder();
        for (Object value : ((List) o)) {
            Object retainedValue = retainAll(schema, markSet, type, value);
            if (retainedValue != null) {
                builder.add(retainedValue); // This retained value is non-empty.
            }
        }
        ImmutableList<Object> list = builder.build();
        return !list.isEmpty() ? list : null;

    } else {
        return o;
    }
}

---

From source file:com.google.errorprone.bugpatterns.AnnotationPosition.java

private Description handle(Tree tree, Name name, ModifiersTree modifiers, VisitorState state) {
    List<? extends AnnotationTree> annotations = modifiers.getAnnotations();
    if (annotations.isEmpty()) {
        return NO_MATCH;
    }//  w  ww.  j a  va 2 s  .c om

    int treePos = ((JCTree) tree).getStartPosition();
    List<ErrorProneToken> tokens = annotationTokens(tree, state, treePos);
    Comment danglingJavadoc = findOrphanedJavadoc(name, tokens);

    ImmutableList<ErrorProneToken> modifierTokens = tokens.stream().filter(t -> MODIFIERS.contains(t.kind()))
            .collect(toImmutableList());
    if (!modifierTokens.isEmpty()) {
        int firstModifierPos = treePos + modifierTokens.get(0).pos();
        int lastModifierPos = treePos + getLast(modifierTokens).endPos();

        Description description = checkAnnotations(tree, treePos, annotations, danglingJavadoc,
                firstModifierPos, lastModifierPos, state);
        if (!description.equals(NO_MATCH)) {
            return description;
        }
    }
    if (danglingJavadoc != null) {
        SuggestedFix.Builder builder = SuggestedFix.builder();
        String javadoc = removeJavadoc(state, treePos, danglingJavadoc, builder);

        String message = "Javadocs should appear before any modifiers or annotations.";
        return buildDescription(tree).setMessage(message).addFix(builder.prefixWith(tree, javadoc).build())
                .build();
    }
    return NO_MATCH;
}

---

From source file:org.apache.james.transport.mailets.RecipientRewriteTableProcessor.java

private ImmutableList<Mapping> getAddressWithNoDomain(Mappings mappings, DomainList domainList)
        throws MessagingException {
    ImmutableList<Mapping> addressWithoutDomains = FluentIterable.from(mappings).filter(noneDomain).toList();

    if (!addressWithoutDomains.isEmpty()) {
        final String defaultDomain = getDefaultDomain(domainList);

        return FluentIterable.from(addressWithoutDomains).transform(appendDefaultDomain(defaultDomain))
                .toList();/*from  w w  w. ja  v a  2 s  .  c  o m*/
    }
    return ImmutableList.of();
}

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