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

Introduction

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

Prototype

public static <T> Optional<T> of(T reference)

Source Link

Document

Returns an Optional instance containing the given non-null reference.

Usage

From source file:com.google.gerrit.server.notedb.rebuild.StatusChangeEvent.java

static Optional<StatusChangeEvent> parseFromMessage(ChangeMessage message, Change change, Change noteDbChange) {
    String msg = message.getMessage();
    if (msg == null) {
        return Optional.absent();
    }//  w  w  w  .j  a  va2 s  . c o m
    for (Map.Entry<Change.Status, Pattern> e : PATTERNS.entrySet()) {
        if (e.getValue().matcher(msg).matches()) {
            return Optional.of(new StatusChangeEvent(message, change, noteDbChange, e.getKey()));
        }
    }
    return Optional.absent();
}

From source file:com.qcadoo.mes.orders.dates.OrderDates.java

public static Optional<OrderDates> of(final Entity order) {
    if (hasPlannedDatesDefined(order)) {
        return Optional.of(OrderDates.of(order, Optional.<DateTime>absent(), Optional.<DateTime>absent()));
    } else {//  www.  j  ava  2s.  c o  m
        return Optional.absent();
    }
}

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

CxxInferSourceFilter(InferBuckConfig config) {
    Optional<String> rawFilterRegex = config.getValue("blacklist_regex");

    blacklistRegex = rawFilterRegex.isPresent() ? Optional.of(Pattern.compile(rawFilterRegex.get()))
            : Optional.<Pattern>absent();
}

From source file:gobblin.metrics.reporter.util.EventUtils.java

/**
 * Parses a {@link gobblin.metrics.MetricReport} from a byte array representing a json input.
 * @param reuse MetricReport to reuse./* ww w .  j a  v a2s  .  c  om*/
 * @param bytes Input bytes.
 * @return MetricReport.
 * @throws java.io.IOException
 */
public synchronized static GobblinTrackingEvent deserializeReportFromJson(GobblinTrackingEvent reuse,
        byte[] bytes) throws IOException {
    if (!reader.isPresent()) {
        reader = Optional.of(new SpecificDatumReader<>(GobblinTrackingEvent.class));
    }

    Closer closer = Closer.create();

    try {
        DataInputStream inputStream = closer.register(new DataInputStream(new ByteArrayInputStream(bytes)));

        // Check version byte
        int versionNumber = inputStream.readInt();
        if (versionNumber != SCHEMA_VERSION) {
            throw new IOException(
                    String.format("MetricReport schema version not recognized. Found version %d, expected %d.",
                            versionNumber, SCHEMA_VERSION));
        }

        // Decode the rest
        Decoder decoder = DecoderFactory.get().jsonDecoder(GobblinTrackingEvent.SCHEMA$, inputStream);
        return reader.get().read(reuse, decoder);
    } catch (Throwable t) {
        throw closer.rethrow(t);
    } finally {
        closer.close();
    }
}

From source file:org.sitemap4j.dom4j.Dom4jHelper.java

static Document getDocumentFromRawSiteMap(final RawSiteMap rawSiteMap) {
    if (!rawSiteMap.hasRepresentation(Document.class)) {
        rawSiteMap.addRepresentation(representationFunction(), Optional.of(Document.class));
    }//from w  w w  . jav a  2 s .c  om

    return rawSiteMap.getRepresentation(Document.class).get();
}

From source file:org.tensorics.core.quantity.ImmutableErronousValue.java

public static <V> ImmutableErronousValue<V> ofValueAndError(V value, V error) {
    return new ImmutableErronousValue<V>(value, Optional.of(error));
}

From source file:extrabiomes.module.amica.thermalexpansion.ThermalExpansionAPI.java

ThermalExpansionAPI() {
    try {/* w  w w  . java2 s.  c  o  m*/
        final Class cls = Class.forName("thermalexpansion.api.crafting.CraftingHelpers");
        addSawmillLogToPlankRecipe = Optional
                .fromNullable(cls.getMethod("addSawmillLogToPlankRecipe", ItemStack.class, ItemStack.class));
        craftingHelpers = Optional.of(cls.newInstance());
    } catch (final Exception e) {
        e.printStackTrace();
        craftingHelpers = Optional.absent();
        addSawmillLogToPlankRecipe = Optional.absent();
    }
}

From source file:org.codeqinvest.quality.analysis.ViolationsAnalysisResult.java

static ViolationsAnalysisResult createFailedAnalysis(List<ViolationOccurence> violations,
        String failureReason) {//from  w  w w . j  av a2 s.  c  o  m
    return new ViolationsAnalysisResult(false, violations, Optional.of(failureReason));
}

From source file:org.apache.gobblin.metrics.reporter.util.MetricReportUtils.java

/**
 * Parses a {@link org.apache.gobblin.metrics.MetricReport} from a byte array representing a json input.
 * @param reuse MetricReport to reuse./*from  www.j av  a  2 s  . c o m*/
 * @param bytes Input bytes.
 * @return MetricReport.
 * @throws java.io.IOException
 */
public synchronized static MetricReport deserializeReportFromJson(MetricReport reuse, byte[] bytes)
        throws IOException {
    if (!READER.isPresent()) {
        READER = Optional.of(new SpecificDatumReader<>(MetricReport.class));
    }

    Closer closer = Closer.create();

    try {
        DataInputStream inputStream = closer.register(new DataInputStream(new ByteArrayInputStream(bytes)));

        // Check version byte
        int versionNumber = inputStream.readInt();
        if (versionNumber != SCHEMA_VERSION) {
            throw new IOException(
                    String.format("MetricReport schema version not recognized. Found version %d, expected %d.",
                            versionNumber, SCHEMA_VERSION));
        }

        // Decode the rest
        Decoder decoder = DecoderFactory.get().jsonDecoder(MetricReport.SCHEMA$, inputStream);
        return READER.get().read(reuse, decoder);
    } catch (Throwable t) {
        throw closer.rethrow(t);
    } finally {
        closer.close();
    }
}

From source file:org.apache.isis.runtimes.dflt.runtime.runner.opts.OptionValidatorForPersistor.java

private static Optional<String> setIf(final boolean fail, final String failMsg) {
    return fail ? Optional.of(failMsg) : Optional.<String>absent();
}