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.ldp4j.tutorial.frontend.person.PersonMapper.java

static Typed<Person> toPerson(Individual<?, ?> individual) {
    MutablePerson person = new MutablePerson();
    Typed<Person> result = Typed.<Person>create(person);
    for (URI uri : Mapper.create(individual).types()) {
        result.withType(uri.toString());
    }//ww  w.ja  v  a  2 s  .  c o m
    Optional<URI> email = Optional.fromNullable(firstIndividualValue(individual, EMAIL));
    person.setEmail(email.isPresent() ? email.get().toString() : null);
    person.setName(firstLiteralValue(individual, NAME, String.class));
    Optional<URI> location = Optional.fromNullable(firstIndividualValue(individual, LOCATION));
    person.setLocation(location.isPresent() ? location.get().toString() : null);
    Optional<URI> workplaceHomepage = Optional
            .fromNullable(firstIndividualValue(individual, WORKPLACE_HOMEPAGE));
    person.setWorkplaceHomepage(workplaceHomepage.isPresent() ? workplaceHomepage.get().toString() : null);
    return result;
}

From source file:com.eucalyptus.util.async.AsyncExceptions.java

/**
 * Extract a web service error message from the given throwable.
 *
 * @param throwable The possibly web service caused throwable
 * @param defaultMessage The message to use if a service message is not found
 * @return The message or the default message
 *//* w  w  w . ja  v a 2s . co m*/
public static String asWebServiceErrorMessage(final Throwable throwable, final String defaultMessage) {
    String message = defaultMessage;
    final Optional<AsyncWebServiceError> serviceErrorOption = AsyncExceptions.asWebServiceError(throwable);
    if (serviceErrorOption.isPresent()) {
        message = serviceErrorOption.get().getMessage();
    }
    return message;
}

From source file:at.ac.univie.isc.asio.d2rq.D2rqTools.java

/**
 * Find the embedded base resource IRI if present.
 *
 * @param model given configuration// w w w.  j av  a 2 s.  c o m
 * @return base resource IRI embedded in model.
 */
static Optional<String> findEmbeddedBaseUri(final Model model) {
    final Optional<Resource> server = findSingleOfType(model, D2RConfig.Server);
    if (server.isPresent()) {
        final Resource baseUriProperty = server.get().getPropertyResourceValue(D2RConfig.baseURI);
        return baseUriProperty != null ? Optional.fromNullable(baseUriProperty.getURI())
                : Optional.<String>absent();
    } else {
        return Optional.absent();
    }
}

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

public static String getSourceStpOrFail(P2PServiceBaseType p2ps) {
    Optional<String> sourceStp = Optional.fromNullable(Strings.emptyToNull(p2ps.getSourceSTP()));
    if (sourceStp.isPresent()) {
        return sourceStp.get();
    }/*from  w w  w.  j av a 2s. co  m*/

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

From source file:org.jclouds.openstack.keystone.v2_0.suppliers.LocationIdToURIFromAccessForTypeAndVersion.java

private static <K, V> void putIfPresent(K key, Optional<V> value, Builder<K, V> builder) {
    if (value.isPresent())
        builder.put(key, value.get());
}

From source file:org.opendaylight.unimgr.utils.EvcUtils.java

/**
 * Delete EVC data from configuration datastore.
 * @param dataBroker The dataBroker instance to create transactions
 * @param optionalUni Optional Uni Node//from  w w w.  j a  v a  2  s.  c  o m
 */
public static void deleteEvcData(final DataBroker dataBroker, final Optional<Node> optionalUni) {
    if (optionalUni.isPresent()) {
        final UniAugmentation uniAugmentation = optionalUni.get().getAugmentation(UniAugmentation.class);
        final InstanceIdentifier<Node> ovsdbNodeIid = uniAugmentation.getOvsdbNodeRef().getValue()
                .firstIdentifierOf(Node.class);
        final Optional<Node> optionalOvsdNode = MdsalUtils.readNode(dataBroker,
                LogicalDatastoreType.OPERATIONAL, ovsdbNodeIid);
        if (optionalOvsdNode.isPresent()) {
            final Node ovsdbNode = optionalOvsdNode.get();
            final OvsdbNodeAugmentation ovsdbNodeAugmentation = ovsdbNode
                    .getAugmentation(OvsdbNodeAugmentation.class);
            for (final ManagedNodeEntry managedNodeEntry : ovsdbNodeAugmentation.getManagedNodeEntry()) {
                final InstanceIdentifier<Node> bridgeIid = managedNodeEntry.getBridgeRef().getValue()
                        .firstIdentifierOf(Node.class);
                final Optional<Node> optBridgeNode = MdsalUtils.readNode(dataBroker, bridgeIid);
                if (optBridgeNode.isPresent()) {
                    final Node bridgeNode = optBridgeNode.get();
                    final InstanceIdentifier<TerminationPoint> iidGreTermPoint = UnimgrMapper
                            .getTerminationPointIid(bridgeNode, UnimgrConstants.DEFAULT_GRE_TUNNEL_NAME);
                    final InstanceIdentifier<TerminationPoint> iidEthTermPoint = UnimgrMapper
                            .getTerminationPointIid(bridgeNode, UnimgrConstants.DEFAULT_TUNNEL_IFACE);
                    MdsalUtils.deleteNode(dataBroker, iidGreTermPoint, LogicalDatastoreType.CONFIGURATION);
                    MdsalUtils.deleteNode(dataBroker, iidEthTermPoint, LogicalDatastoreType.CONFIGURATION);
                }
            }
        }
    } else {
        LOG.info("Unable to retrieve UNI from the EVC.");
    }
}

From source file:io.crate.testing.SQLPrinter.java

public static String print(QuerySpec spec) {
    StringBuilder sb = new StringBuilder();

    sb.append("SELECT ");
    TESTING_SYMBOL_PRINTER.process(spec.outputs(), sb);

    if (spec.where().hasQuery()) {
        sb.append(" WHERE ");
        TESTING_SYMBOL_PRINTER.process(spec.where().query(), sb);
    }//from  w  w w.jav a2 s  . c  om
    if (spec.groupBy().isPresent()) {
        sb.append(" GROUP BY ");
        TESTING_SYMBOL_PRINTER.process(spec.groupBy().get(), sb);
    }
    if (spec.having().isPresent()) {
        sb.append(" HAVING ");
        TESTING_SYMBOL_PRINTER.process(spec.having().get().query(), sb);
    }
    if (spec.orderBy().isPresent()) {
        sb.append(" ORDER BY ");
        TESTING_SYMBOL_PRINTER.process(spec.orderBy().get(), sb);
    }
    Optional<Symbol> limit = spec.limit();
    if (limit.isPresent()) {
        sb.append(" LIMIT ");
        sb.append(print(limit.get()));
    }
    Optional<Symbol> offset = spec.offset();
    if (offset.isPresent()) {
        sb.append(" OFFSET ");
        sb.append(print(offset.get()));
    }
    return sb.toString();
}

From source file:com.bitranger.parknshop.common.recommend.collections.CollectionUtils.java

@SuppressWarnings({ "unchecked", "rawtypes" })
public static <E> Iterable<E> fast(final Iterable<E> iter) {
    if (iter instanceof FastIterable) {
        return new Iterable<E>() {
            @Override//w w  w.  jav a 2 s.  co m
            public Iterator<E> iterator() {
                return ((FastIterable) iter).fastIterator();
            }
        };
    } else if (iter instanceof Cursor) {
        throw new IllegalArgumentException();
    } else {
        Optional<Method> fastMethod = fastIteratorMethods.getUnchecked(iter.getClass());
        if (fastMethod.isPresent()) {
            final Method method = fastMethod.get();
            return new Iterable<E>() {
                @Override
                public Iterator<E> iterator() {
                    try {
                        return (Iterator<E>) method.invoke(iter);
                    } catch (IllegalAccessException e) {
                        return iter.iterator();
                    } catch (InvocationTargetException e) {
                        throw Throwables.propagate(e.getCause());
                    }
                }
            };
        } else {
            return iter;
        }
    }
}

From source file:org.opendaylight.yangtools.yang.data.api.schema.tree.StoreTreeNodes.java

/**
 * Finds a node in tree//w w  w.  j  a va2 s . c o m
 * @param <T>
 *          Store tree node type.
 * @param tree Data Tree
 * @param path Path to the node
 * @return Optional with node if the node is present in tree, {@link Optional#absent()} otherwise.
 */
public static <T extends StoreTreeNode<T>> Optional<T> findNode(final T tree,
        final YangInstanceIdentifier path) {
    Optional<T> current = Optional.of(tree);
    Iterator<PathArgument> pathIter = path.getPathArguments().iterator();
    while (current.isPresent() && pathIter.hasNext()) {
        current = current.get().getChild(pathIter.next());
    }
    return current;
}

From source file:org.inferred.internal.source.ModelUtils.java

/** Returns the {@link TypeElement} corresponding to {@code type}, if there is one. */
public static Optional<TypeElement> maybeAsTypeElement(TypeMirror type) {
    Optional<DeclaredType> declaredType = maybeDeclared(type);
    if (declaredType.isPresent()) {
        return maybeType(declaredType.get().asElement());
    } else {/*from   w  w w  . jav  a 2s . c o  m*/
        return Optional.absent();
    }
}