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

Introduction

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

Prototype

public static <T> Optional<T> absent()

Source Link

Document

Returns an Optional instance with no contained reference.

Usage

From source file:bear.task.TaskResult.java

public TaskResult(Result result) {
    this.result = result;
    exception = Optional.absent();
}

From source file:de.flapdoodle.logparser.io.StringListReaderAdapter.java

@Override
public synchronized Optional<String> nextLine() throws IOException {
    if (_idx < _lines.size()) {
        String line = _lines.get(_idx);
        _idx++;//w  w  w. j  a v a 2  s. c  o m
        return Optional.of(line);
    }
    return Optional.absent();
}

From source file:io.macgyver.core.resource.ResourceProvider.java

public Optional<Resource> findResourceByHash(String hash) throws IOException {
    for (Resource r : findResources()) {
        if (r.getHash().equals(hash)) {
            return Optional.fromNullable(r);
        }/* ww  w  .ja v a  2  s .c  o m*/
    }
    return Optional.absent();
}

From source file:eu.numberfour.n4js.N4JSRuntimeCoreWithMockProject.java

@Override
public Optional<? extends IN4JSProject> findProject(URI nestedLocation) {
    if (nestedLocation == null) {
        return Optional.absent();
    }//from ww w  .  j a v  a 2s  .co  m
    IN4JSProject result = mockProject;
    return Optional.fromNullable(result);
}

From source file:org.locationtech.geogig.plumbing.CommitFromDateOp.java

@Override
protected Optional<RevCommit> _call() {
    Preconditions.checkState(date != null);
    long time = date.getTime();
    Iterator<RevCommit> iter = command(LogOp.class).setFirstParentOnly(true).call();
    while (iter.hasNext()) {
        RevCommit commit = iter.next();//  w w  w  .  ja v  a2 s . c  o  m
        if (commit.getCommitter().getTimestamp() < time) {
            return Optional.of(commit);
        }
    }
    return Optional.absent();
}

From source file:com.facebook.buck.apple.xcode.xcodeproj.XCConfigurationList.java

public XCConfigurationList() {
    buildConfigurations = Lists.newArrayList();
    defaultConfigurationName = Optional.absent();
    defaultConfigurationIsVisible = false;

    buildConfigurationsByName = CacheBuilder.newBuilder()
            .build(new CacheLoader<String, XCBuildConfiguration>() {
                @Override//from   w  ww . jav a2s  .c o m
                public XCBuildConfiguration load(String key) throws Exception {
                    XCBuildConfiguration configuration = new XCBuildConfiguration(key);
                    buildConfigurations.add(configuration);
                    return configuration;
                }
            });
}

From source file:org.jclouds.rest.functions.ReturnAbsentOn403Or404Or500.java

public Object apply(Exception from) {
    Boolean returnVal = returnValueOnCodeOrNull(from, true, Predicates.in(Ints.asList(403, 404, 500)));
    if (returnVal != null)
        return Optional.absent();

    throw Throwables.propagate(from);
}

From source file:org.eclipse.mylyn.internal.wikitext.commonmark.inlines.LineBreakSpan.java

@Override
public Optional<? extends Inline> createInline(Cursor cursor) {
    char c = cursor.getChar();
    if (c == '\n' || c == ' ') {
        Matcher matcher = cursor.matcher(pattern);
        if (matcher.matches()) {
            int length = matcher.group(1).length();
            if (length > 2 || matcher.group(2) != null) {
                return Optional.of(new HardLineBreak(cursor.getLineAtOffset(), cursor.getOffset(), length));
            }//from   w w w . j a  va2 s  . c  om
            return Optional.of(new SoftLineBreak(cursor.getLineAtOffset(), cursor.getOffset(), length));
        }
    }
    return Optional.absent();
}

From source file:org.sonar.server.computation.measure.BatchMeasureToMeasure.java

public Optional<Measure> toMeasure(@Nullable BatchReport.Measure batchMeasure, Metric metric) {
    Objects.requireNonNull(metric);
    if (batchMeasure == null) {
        return Optional.absent();
    }//w w w. j av  a2s. co m

    Measure.NewMeasureBuilder builder = Measure.newMeasureBuilder();
    String data = batchMeasure.hasStringValue() ? batchMeasure.getStringValue() : null;
    switch (metric.getType().getValueType()) {
    case INT:
        return toIntegerMeasure(builder, batchMeasure, data);
    case LONG:
        return toLongMeasure(builder, batchMeasure, data);
    case DOUBLE:
        return toDoubleMeasure(builder, batchMeasure, data);
    case BOOLEAN:
        return toBooleanMeasure(builder, batchMeasure, data);
    case STRING:
        return toStringMeasure(builder, batchMeasure);
    case LEVEL:
        return toLevelMeasure(builder, batchMeasure);
    case NO_VALUE:
        return toNoValueMeasure(builder, batchMeasure);
    default:
        throw new IllegalArgumentException("Unsupported Measure.ValueType " + metric.getType().getValueType());
    }
}

From source file:org.apache.james.transport.mailets.remoteDelivery.AddressesArrayToMailAddressListConverter.java

public static List<MailAddress> getAddressesAsMailAddress(Address[] addresses, final Logger logger) {
    if (addresses == null) {
        return ImmutableList.of();
    }// ww w.  ja  va 2 s.  c o  m
    return FluentIterable.from(Arrays.asList(addresses))
            .transform(new Function<Address, Optional<MailAddress>>() {
                @Override
                public Optional<MailAddress> apply(Address input) {
                    try {
                        return Optional.of(new MailAddress(input.toString()));
                    } catch (AddressException e) {
                        logger.debug("Can't parse unsent address: {}", e.getMessage());
                        return Optional.absent();
                    }
                }
            }).filter(new Predicate<Optional<MailAddress>>() {
                @Override
                public boolean apply(Optional<MailAddress> input) {
                    return input.isPresent();
                }
            }).transform(new Function<Optional<MailAddress>, MailAddress>() {
                @Override
                public MailAddress apply(Optional<MailAddress> input) {
                    return input.get();
                }
            }).toList();
}