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.opendaylight.yangtools.yang.data.impl.schema.tree.AbstractDataTreeCandidateNode.java

static DataTreeCandidateNode deltaChild(
        final NormalizedNodeContainer<?, PathArgument, NormalizedNode<?, ?>> oldData,
        final NormalizedNodeContainer<?, PathArgument, NormalizedNode<?, ?>> newData,
        final PathArgument identifier) {

    final Optional<NormalizedNode<?, ?>> maybeNewChild = getChild(newData, identifier);
    final Optional<NormalizedNode<?, ?>> maybeOldChild = getChild(oldData, identifier);
    if (maybeOldChild.isPresent()) {
        final NormalizedNode<?, ?> oldChild = maybeOldChild.get();
        if (maybeNewChild.isPresent()) {
            return AbstractRecursiveCandidateNode.replaceNode(oldChild, maybeNewChild.get());
        }/*from   w  w  w  . jav a2 s.co  m*/
        return AbstractRecursiveCandidateNode.deleteNode(oldChild);
    }

    return maybeNewChild.isPresent() ? AbstractRecursiveCandidateNode.writeNode(maybeNewChild.get()) : null;
}

From source file:utils.PasswordManager.java

/**
 * Decrypt an encrypted password. A master password must have been provided in the constructor.
 * @param encrypted An encrypted password.
 * @return The decrypted password.//from   www  .j  a  v a2 s.c o  m
 */
public static String decryptPassword(String encrypted, Optional<String> masterPassword) {
    Optional<BasicTextEncryptor> encryptor = getEncryptor(masterPassword);
    Preconditions.checkArgument(encryptor.isPresent(), ERROR_DECRY_MSG);

    try {
        return encryptor.get().decrypt(encrypted);
    } catch (Exception e) {
        throw new RuntimeException("Failed to decrypt password " + encrypted, e);
    }
}

From source file:springfox.bean.validators.plugins.Validators.java

private static <T extends Annotation> Optional<T> findAnnotation(
        Optional<? extends AnnotatedElement> annotatedElement, Class<T> annotationType) {
    if (annotatedElement.isPresent()) {
        return Optional.fromNullable(AnnotationUtils.findAnnotation(annotatedElement.get(), annotationType));
    } else {//from  w ww  . ja va 2  s . c  o  m
        return Optional.absent();
    }
}

From source file:net.es.nsi.pce.pf.PfUtils.java

public static String getDestinationStpOrFail(P2PServiceBaseType p2ps) {
    Optional<String> destStp = Optional.fromNullable(Strings.emptyToNull(p2ps.getDestSTP()));
    if (destStp.isPresent()) {
        return destStp.get();
    }// w w w . j a va2  s.c o  m

    throw Exceptions.missingParameter(Point2PointTypes.getSourceStp().getNamespace(),
            Point2PointTypes.getDestStp().getType(), "null");
}

From source file:org.jclouds.aliyun.ecs.domain.ResourceType.java

public static ResourceType fromValue(String value) {
    Optional<ResourceType> resourceType = Enums.getIfPresent(ResourceType.class, value.toUpperCase());
    checkArgument(resourceType.isPresent(), "Expected one of %s but was %s",
            Joiner.on(',').join(ResourceType.values()), value);
    return resourceType.get();
}

From source file:ch.epfl.eagle.daemon.util.ConfigUtil.java

/**
 * Parses the list of backends from a {@link Configuration}.
 *
 * Returns a map of address of backends to a {@link TResourceVector} describing the
 * total resource capacity for that backend.
 *//*from  w w  w . j a  v  a  2  s . c o  m*/
public static Set<InetSocketAddress> parseBackends(Configuration conf) {
    if (!conf.containsKey(EagleConf.STATIC_NODE_MONITORS)) {
        throw new RuntimeException("Missing configuration node monitor list");
    }

    Set<InetSocketAddress> backends = new HashSet<InetSocketAddress>();

    for (String node : conf.getStringArray(EagleConf.STATIC_NODE_MONITORS)) {
        Optional<InetSocketAddress> addr = Serialization.strToSocket(node);
        if (!addr.isPresent()) {
            LOG.warn("Bad backend address: " + node);
            continue;
        }
        backends.add(addr.get());
    }

    return backends;
}

From source file:org.apache.isis.viewer.restfulobjects.server.mappers.ExceptionMapperAbstract.java

private static String messageFor(final Throwable ex) {
    final List<Throwable> chain = Throwables.getCausalChain(ex);
    final Optional<RecoverableException> recoverableIfAny = FluentIterable.from(chain)
            .filter(RecoverableException.class).first();
    return (recoverableIfAny.isPresent() ? recoverableIfAny.get() : ex).getMessage();
}

From source file:utils.PasswordManager.java

private static Optional<BasicTextEncryptor> getEncryptor(Optional<String> masterPassword) {
    Optional<BasicTextEncryptor> encryptor;
    if (masterPassword.isPresent()) {
        encryptor = Optional.of(new BasicTextEncryptor());
        try {/* ww w .  j a  va  2  s . com*/
            encryptor.get().setPassword(masterPassword.get());
        } catch (Exception e) {
            LOG.error("Failed to set master password for encryptor", e);
            encryptor = Optional.absent();
        }
    } else {
        encryptor = Optional.absent();
    }

    return encryptor;
}

From source file:org.opendaylight.ovsdb.southbound.SouthboundUtil.java

public static Optional<OvsdbNodeAugmentation> getManagingNode(DataBroker db, OvsdbBridgeAttributes mn) {
    Preconditions.checkNotNull(mn);//from w  w w  .  ja  v  a 2  s.  c  om
    try {
        OvsdbNodeRef ref = mn.getManagedBy();
        if (ref != null && ref.getValue() != null) {
            ReadOnlyTransaction transaction = db.newReadOnlyTransaction();
            @SuppressWarnings("unchecked") // Note: erasure makes this safe in combination with the typecheck below
            InstanceIdentifier<Node> path = (InstanceIdentifier<Node>) ref.getValue();

            CheckedFuture<Optional<Node>, ReadFailedException> nf = transaction
                    .read(LogicalDatastoreType.OPERATIONAL, path);
            transaction.close();
            Optional<Node> optional = nf.get();
            if (optional != null && optional.isPresent()) {
                OvsdbNodeAugmentation ovsdbNode = null;
                if (optional.get() instanceof Node) {
                    ovsdbNode = optional.get().getAugmentation(OvsdbNodeAugmentation.class);
                } else if (optional.get() instanceof OvsdbNodeAugmentation) {
                    ovsdbNode = (OvsdbNodeAugmentation) optional.get();
                }
                if (ovsdbNode != null) {
                    return Optional.of(ovsdbNode);
                } else {
                    LOG.warn("OvsdbManagedNode {} claims to be managed by {} but "
                            + "that OvsdbNode does not exist", mn, ref.getValue());
                    return Optional.absent();
                }
            } else {
                LOG.warn("Mysteriously got back a thing which is *not* a topology Node: {}", optional);
                return Optional.absent();
            }
        } else {
            LOG.warn("Cannot find client for OvsdbManagedNode without a specified ManagedBy {}", mn);
            return Optional.absent();
        }
    } catch (Exception e) {
        LOG.warn("Failed to get OvsdbNode that manages OvsdbManagedNode {}", mn, e);
        return Optional.absent();
    }
}

From source file:org.eclipse.buildship.core.workspace.internal.ProjectNatureUpdater.java

private static Set<String> toNatures(Optional<List<OmniEclipseProjectNature>> projectNatures,
        IProjectDescription description) {
    Set<String> natures = Sets.newLinkedHashSet();
    if (projectNatures.isPresent()) {
        natures.addAll(toNatures(projectNatures.get()));
    } else {//from  www.j ava  2  s  . c  om
        natures.addAll(Arrays.asList(description.getNatureIds()));
    }
    natures.add(GradleProjectNature.ID);
    return natures;
}