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

Introduction

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

Prototype

public abstract T get();

Source Link

Document

Returns the contained instance, which must be present.

Usage

From source file:org.eclipse.recommenders.utils.rcp.ast.BindingUtils.java

public static List<IPackageName> toPackageNames(final ITypeBinding[] types) {
    final List<IPackageName> res = Lists.newLinkedList();
    for (final ITypeBinding b : types) {
        final Optional<IPackageName> opt = toPackageName(b);
        if (opt.isPresent()) {
            res.add(opt.get());
        }/*from  www  .  j  a v  a 2  s .c o m*/
    }
    return res;
}

From source file:org.opendaylight.netconf.util.messages.NetconfMessageUtil.java

public static Collection<String> extractCapabilitiesFromHello(Document doc) throws NetconfDocumentedException {
    XmlElement responseElement = XmlElement.fromDomDocument(doc);
    // Extract child element <capabilities> from <hello> with or without(fallback) the same namespace
    Optional<XmlElement> capabilitiesElement = responseElement
            .getOnlyChildElementWithSameNamespaceOptionally(XmlNetconfConstants.CAPABILITIES)
            .or(responseElement.getOnlyChildElementOptionally(XmlNetconfConstants.CAPABILITIES));

    List<XmlElement> caps = capabilitiesElement.get().getChildElements(XmlNetconfConstants.CAPABILITY);
    return Collections2.transform(caps, new Function<XmlElement, String>() {

        @Override//from www . j a  v  a  2  s.c o  m
        public String apply(@Nonnull XmlElement input) {
            // Trim possible leading/tailing whitespace
            try {
                return input.getTextContent().trim();
            } catch (DocumentedException e) {
                LOG.trace("Error fetching input text content", e);
                return null;
            }
        }
    });

}

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

static List<Inline> secondPass(List<Inline> inlines) {
    List<Inline> processedInlines = ImmutableList.copyOf(inlines);
    Optional<InlinesSubstitution> substitution = Optional.absent();
    do {//from www.j  a v  a 2s  .c  o m
        for (Inline inline : processedInlines) {
            substitution = inline.secondPass(processedInlines);
            if (substitution.isPresent()) {
                processedInlines = substitution.get().apply(processedInlines);
                break;
            }
        }
    } while (substitution.isPresent());
    return processedInlines;
}

From source file:com.facebook.buck.step.StepFailedException.java

static StepFailedException createForFailingStepWithExitCode(Step step, ExecutionContext context, int exitCode,
        Optional<BuildTarget> buildTarget) {
    String nameOrDescription = context.getVerbosity().shouldPrintCommand() ? step.getDescription(context)
            : step.getShortName();//  ww w.j a va  2s.c  om
    String message;
    if (buildTarget.isPresent()) {
        message = String.format("%s failed with exit code %d:\n%s", buildTarget.get().getFullyQualifiedName(),
                exitCode, nameOrDescription);
    } else {
        message = String.format("Failed with exit code %d:\n%s", exitCode, nameOrDescription);
    }
    return new StepFailedException(message, step, exitCode);
}

From source file:org.opendaylight.controller.md.sal.dom.store.impl.replica.ResolveDataChangeState.java

private static void addChildNodes(final List<Node> result, final Collection<Node> parentNodes,
        final PathArgument childIdentifier) {
    for (Node node : parentNodes) {
        Optional<Node> child = node.getChild(childIdentifier);
        if (child.isPresent()) {
            result.add(child.get());
        }//from www  .  ja va2  s .  c o  m
    }
}

From source file:org.apache.brooklyn.util.core.flags.MethodCoercions.java

/**
 * Tries to find a single-parameter method with a parameter compatible with (can be coerced to) the argument, and
 * invokes it./* ww  w .  j  a va2 s. c om*/
 *
 * @param instance the object to invoke the method on
 * @param methodName the name of the method to invoke
 * @param argument the argument to the method's parameter.
 * @return the result of the method call, or {@link org.apache.brooklyn.util.guava.Maybe#absent()} if method could not be matched.
 */
public static Maybe<?> tryFindAndInvokeSingleParameterMethod(final Object instance, final String methodName,
        final Object argument) {
    Class<?> clazz = instance.getClass();
    Iterable<Method> methods = Arrays.asList(clazz.getMethods());
    Optional<Method> matchingMethod = Iterables.tryFind(methods,
            matchSingleParameterMethod(methodName, argument));
    if (matchingMethod.isPresent()) {
        Method method = matchingMethod.get();
        try {
            Type paramType = method.getGenericParameterTypes()[0];
            Object coercedArgument = TypeCoercions.coerce(argument, TypeToken.of(paramType));
            return Maybe.of(method.invoke(instance, coercedArgument));
        } catch (IllegalAccessException | InvocationTargetException e) {
            throw Exceptions.propagate(e);
        }
    } else {
        return Maybe.absent();
    }
}

From source file:org.opendaylight.protocol.bgp.flowspec.ipv4.FlowspecIpv4NlriParserHelper.java

private static final List<ProtocolIps> createProtocolsIps(final UnkeyedListNode protocolIpsData) {
    final List<ProtocolIps> protocolIps = new ArrayList<>();

    for (final UnkeyedListEntryNode node : protocolIpsData.getValue()) {
        final ProtocolIpsBuilder ipsBuilder = new ProtocolIpsBuilder();
        final Optional<DataContainerChild<? extends PathArgument, ?>> opValue = node
                .getChild(AbstractFlowspecNlriParser.OP_NID);
        if (opValue.isPresent()) {
            ipsBuilder//  w w  w.  j a  va2s. c  o  m
                    .setOp(NumericOneByteOperandParser.INSTANCE.create((Set<String>) opValue.get().getValue()));
        }
        final Optional<DataContainerChild<? extends PathArgument, ?>> valueNode = node
                .getChild(AbstractFlowspecNlriParser.VALUE_NID);
        if (valueNode.isPresent()) {
            ipsBuilder.setValue((Short) valueNode.get().getValue());
        }
        protocolIps.add(ipsBuilder.build());
    }

    return protocolIps;
}

From source file:org.spongepowered.common.service.scheduler.SpongeScheduler.java

/**
 * Check the object is a plugin instance.
 *
 * @param plugin The plugin to check/*from ww w.  j a  v  a  2 s  .c o m*/
 * @return The plugin container of the plugin instance
 * @throws NullPointerException If the passed in plugin instance is null
 * @throws IllegalArgumentException If the object is not a plugin instance
 */
static PluginContainer checkPluginInstance(Object plugin) {
    Optional<PluginContainer> optPlugin = Sponge.getGame().getPluginManager()
            .fromInstance(checkNotNull(plugin, "plugin"));
    checkArgument(optPlugin.isPresent(), "Provided object is not a plugin instance");
    return optPlugin.get();
}

From source file:org.killbill.billing.plugin.adyen.api.mapping.UserDataMappingService.java

public static UserData toUserData(@Nullable final Account account, final Iterable<PluginProperty> properties) {
    final UserData userData = new UserData();

    // determine the customer id
    final String customerIdProperty = PluginProperties
            .findPluginPropertyValue(AdyenPaymentPluginApi.PROPERTY_CUSTOMER_ID, properties);
    final Optional<String> optionalCustomerId = toCustomerId(customerIdProperty, account);
    final String customerId = optionalCustomerId.isPresent() ? optionalCustomerId.get() : null;
    userData.setShopperReference(customerId);

    // determine the customer locale
    final String propertyLocaleString = PluginProperties
            .findPluginPropertyValue(AdyenPaymentPluginApi.PROPERTY_CUSTOMER_LOCALE, properties);
    final Optional<Locale> customerLocaleOptional = toCustomerLocale(propertyLocaleString, account);
    final Locale customerLocale = customerLocaleOptional.isPresent() ? customerLocaleOptional.get() : null;
    userData.setShopperLocale(customerLocale);

    // determine the email
    final String propertyEmail = PluginProperties.findPluginPropertyValue(AdyenPaymentPluginApi.PROPERTY_EMAIL,
            properties);//from  w ww  . ja  va 2  s  . co m
    final Optional<String> optionalEmail = toCustomerEmail(propertyEmail, account);
    final String email = optionalEmail.isPresent() ? optionalEmail.get() : null;
    userData.setShopperEmail(email);

    // determine first Name
    final String propertyFirstName = PluginProperties
            .findPluginPropertyValue(AdyenPaymentPluginApi.PROPERTY_FIRST_NAME, properties);
    final Optional<String> optionalFirstName = toFirstName(propertyFirstName, account);
    final String firstName = optionalFirstName.isPresent() ? optionalFirstName.get() : null;
    userData.setFirstName(firstName);

    // determine last Name
    final String propertyLastName = PluginProperties
            .findPluginPropertyValue(AdyenPaymentPluginApi.PROPERTY_LAST_NAME, properties);
    final Optional<String> optionalLastName = toLastName(propertyLastName, account);
    final String lastName = optionalLastName.isPresent() ? optionalLastName.get() : null;
    userData.setLastName(lastName);

    // set ip
    userData.setShopperIP(
            PluginProperties.findPluginPropertyValue(AdyenPaymentPluginApi.PROPERTY_IP, properties));

    return userData;
}

From source file:gobblin.util.ExecutorsUtils.java

private static ThreadFactory newThreadFactory(ThreadFactoryBuilder builder, Optional<Logger> logger,
        Optional<String> nameFormat) {
    if (nameFormat.isPresent()) {
        builder.setNameFormat(nameFormat.get());
    }//from ww  w .jav a2  s  . c om
    return builder.setUncaughtExceptionHandler(new LoggingUncaughtExceptionHandler(logger)).build();
}