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:org.opendaylight.yangtools.yang.data.impl.schema.tree.OrderedLeafSetModificationStrategy.java

@SuppressWarnings({ "unchecked", "rawtypes" })
OrderedLeafSetModificationStrategy(final LeafListSchemaNode schema, final DataTreeConfiguration treeConfig) {
    super((Class) LeafSetNode.class, treeConfig);
    entryStrategy = Optional.of(new LeafSetEntryModificationStrategy(schema));
}

From source file:org.eclipse.emf.eson.generators.GeneratorHelper.java

/**
 * Find the first occurrence of content of a certain type.
 * /* w  ww .  j av a  2s.c o  m*/
 * This helper intentionally, for optional performance, does NOT traverse the entire Resource, but only the first level.
 * 
 * @param resource EMF Resource
 * @param klass Java class to find in first level of getContents() of Resource
 * @return Guava optional
 */
public <T extends EObject> Optional<T> getFirstRootContentOfType(Resource resource, Class<T> klass) {
    if (!resource.isLoaded())
        return Optional.absent();

    EList<EObject> contents = resource.getContents();
    for (EObject eObject : contents) {
        if (klass.isInstance(eObject)) {
            return Optional.of(klass.cast(eObject));
        }
    }
    return Optional.absent();
}

From source file:org.akraievoy.cnet.gen.domain.LocationGeneratorFractalDLA.java

public LocationGeneratorFractalDLA(final EntropySource eSource) {
    this.eSource = eSource;
    this.eventModel = new WeightedEventModelBase(Optional.of("locations"));
}

From source file:org.whispersystems.websocket.messages.protobuf.ProtobufWebSocketResponseMessage.java

@Override
public Optional<byte[]> getBody() {
    if (message.hasBody()) {
        return Optional.of(message.getBody().toByteArray());
    } else {//ww w  .  ja v  a  2s  . c o m
        return Optional.absent();
    }
}

From source file:com.google.devtools.build.xcode.xcodegen.FileReference.java

/**
 * Returns an instance whose name is the base name of the path.
 *//*  w w  w  . j  av  a  2 s.  c o  m*/
public static FileReference of(String path, SourceTree sourceTree) {
    return new FileReference(new File(path).getName(), Optional.of(path), sourceTree,
            Optional.<String>absent());
}

From source file:org.basepom.mojo.propertyhelper.macros.DemoMacro.java

@Override
public Optional<String> getValue(@Nonnull final MacroDefinition macroDefinition,
        @Nonnull final ValueProvider valueProvider, @Nonnull final AbstractPropertyHelperMojo mojo) {
    Preconditions.checkState(mojo != null, "inserted mojo is null!");

    final String type = Objects.firstNonNull(macroDefinition.getProperties().get("type"), "static");
    if ("static".equals(type)) {
        return Optional.of("static-value");
    } else if ("property".equals(type)) {
        return valueProvider.getValue();
    } else {/*from   w  w w .  ja  va2 s  .  c  o  m*/
        return Optional.fromNullable(macroDefinition.getProperties().get("value"));
    }
}

From source file:org.jclouds.digitalocean2.handlers.DigitalOcean2RateLimitRetryHandler.java

@Override
protected Optional<Long> millisToNextAvailableRequest(HttpCommand command, HttpResponse response) {
    // The header is the Unix epoch time when the next request can be done
    String epochForNextAvailableRequest = response.getFirstHeaderOrNull("RateLimit-Reset");
    if (epochForNextAvailableRequest == null) {
        return Optional.absent();
    }/* w w w  .  j  av a  2  s.  co  m*/
    return Optional.of(millisUntilNextAvailableRequest(Long.parseLong(epochForNextAvailableRequest)));
}

From source file:li.klass.fhem.domain.CulHmSubType.java

public static Optional<CulHmSubType> subTypeFor(String value) {
    if ("DIMMER".equalsIgnoreCase(value) || "BLINDACTUATOR".equalsIgnoreCase(value)) {
        return Optional.of(DIMMER);
    } else if ("SWITCH".equalsIgnoreCase(value)) {
        return Optional.of(SWITCH);
    } else if ("SMOKEDETECTOR".equalsIgnoreCase(value)) {
        return Optional.of(CulHmSubType.SMOKE_DETECTOR);
    } else if ("THREESTATESENSOR".equalsIgnoreCase(value)) {
        return Optional.of(CulHmSubType.THREE_STATE);
    } else if ("THSensor".equalsIgnoreCase(value)) {
        return Optional.of(CulHmSubType.TH);
    } else if ("KFM100".equalsIgnoreCase(value)) {
        return Optional.of(CulHmSubType.FILL_STATE);
    } else if ("THERMOSTAT".equalsIgnoreCase(value)) {
        return Optional.of(THERMOSTAT);
    } else if ("MOTIONDETECTOR".equalsIgnoreCase(value)) {
        return Optional.of(MOTION);
    } else if (("KEYMATIC").equalsIgnoreCase(value)) {
        return Optional.of(KEYMATIC);
    } else if ("powerMeter".equalsIgnoreCase(value)) {
        return Optional.of(POWERMETER);
    } else if ("THPLSensor".equalsIgnoreCase(value)) {
        return Optional.of(THPL);
    } else if ("powerSensor".equalsIgnoreCase(value)) {
        return Optional.of(POWERSENSOR);
    }//from   w  w w  .java2  s  .  c o  m
    return Optional.absent();
}

From source file:io.crate.planner.Limits.java

public static Optional<Symbol> mergeMin(Optional<Symbol> limit1, Optional<Symbol> limit2) {
    if (limit1.isPresent()) {
        if (limit2.isPresent()) {
            return Optional
                    .of(new Function(LeastFunction.TWO_LONG_INFO, Arrays.asList(limit1.get(), limit2.get())));
        }//from www .j a v a  2 s.co m
        return limit1;
    }
    return limit2;
}

From source file:com.google.template.soy.jbcsrc.api.CompiledTemplates.java

/** Returns the strict content type of the template. */
public Optional<ContentKind> getTemplateContentKind(String name) {
    TemplateMetadata meta = getTemplateMetadata(name);
    String contentKind = meta.contentKind();
    if (contentKind.isEmpty()) {
        return Optional.absent();
    }/*from w  ww . j a v  a  2 s .c  om*/
    return Optional.of(ContentKind.valueOf(contentKind));
}