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:se.sics.ktoolbox.util.Either.java

public Optional<R> getOptionalRight() {
    if (this.isRight()) {
        return Optional.fromNullable(this.getRight());
    } else {// w  ww .  j a  va  2s .c  o  m
        return Optional.absent();
    }
}

From source file:com.facebook.buck.cxx.DefaultPreprocessor.java

@Override
public Optional<ImmutableList<String>> getExtraFlags() {
    return Optional.absent();
}

From source file:cc.ilo.cc.ilo.pipeline.producer.InjectionProducer.java

@Override
public Optional<T> getNext() throws InterruptedException {
    Optional<T> out;/*from   w ww .  j av  a  2  s. c  o  m*/
    if ((out = outQueue.peek()) == null) {
        if (stopped) {
            return Optional.absent();
        }
        LOGGER.trace("input too slow - blocking");
        out = outQueue.take();
        return out;
    }
    return outQueue.poll();
}

From source file:org.feature4j.MatcherFeatureOverride.java

@Override
public Optional<V> extractFeatureValue(FeaturesContext ctx) {
    if (matcher.matches(ctx)) {
        return Optional.of(overrideValue);
    } else {//  w  ww.j a v a 2 s. c o m
        return Optional.absent();
    }
}

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

@Override
public Optional<? extends Inline> createInline(Cursor cursor) {
    char c = cursor.getChar();
    if (c == '!' && cursor.hasNext() && cursor.getNext() == '[') {
        return Optional.of(new PotentialBracketDelimiter(cursor.getLineAtOffset(), cursor.getOffset(), 2,
                cursor.getTextAtOffset(2)));
    }/*  w  ww . j av  a2 s  .  c om*/
    if (c == '[') {
        return Optional.of(new PotentialBracketDelimiter(cursor.getLineAtOffset(), cursor.getOffset(), 1,
                cursor.getTextAtOffset(1)));
    }
    if (c == ']') {
        return Optional.of(new PotentialBracketEndDelimiter(cursor.getLineAtOffset(), cursor.getOffset()));
    }
    return Optional.absent();
}

From source file:org.locationtech.geogig.storage.sqlite.SQLiteConflictsDatabase.java

@Override
public Optional<Conflict> getConflict(String namespace, String path) {
    List<Conflict> conflicts = getConflicts(namespace, path);
    if (conflicts.isEmpty()) {
        return Optional.absent();
    }/*from ww  w .  j  a va  2  s  . c  o  m*/
    return Optional.of(conflicts.get(0));
}

From source file:org.asoem.greyfish.utils.collect.UnrolledListAT.java

private static <T> Optional<T> findFirstIterative(final List<T> list, final Predicate<? super T> predicate) {
    for (T t : list) {
        if (predicate.apply(t)) {
            return Optional.of(t);
        }//from w w  w . j  a  v  a2 s .c  o m
    }
    return Optional.absent();
}

From source file:uk.gov.hmrc.service.HelloWorldService.java

public String helloWorld() {
    try {/*from  ww w.  ja v  a  2  s  .com*/
        return serviceConnector.get("https://api.service.hmrc.gov.uk/hello/world",
                "application/vnd.hmrc.1.0+json", Optional.absent());
    } catch (UnauthorizedException e) {
        throw new RuntimeException(e);
    }
}

From source file:de.flapdoodle.apache.pivot.events.AsyncEvent.java

public <X> Optional<X> payload(Class<X> type) {
    if (!failed()) {
        if (type.isInstance(payload)) {
            return Optional.of((X) payload);
        }/*from  www  .  j av a 2  s  .  c  o  m*/
    }
    return Optional.absent();
}

From source file:com.google.template.soy.passes.htmlmatcher.HtmlMatcherAccumulatorNode.java

@Override
public Optional<SoyNode> getSoyNode() {
    return Optional.absent();
}