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.netconf.sal.connect.netconf.schema.NetconfRemoteSchemaYangSourceProvider.java

private static Optional<String> getSchemaFromRpc(final RemoteDeviceId id, final NormalizedNode<?, ?> result) {
    if (result == null) {
        return Optional.absent();
    }//from  www. j a  v  a 2  s .  c  o m

    final Optional<DataContainerChild<? extends YangInstanceIdentifier.PathArgument, ?>> child = ((ContainerNode) result)
            .getChild(NETCONF_DATA_PATHARG);

    Preconditions.checkState(child.isPresent() && child.get() instanceof AnyXmlNode,
            "%s Unexpected response to get-schema, expected response with one child %s, but was %s", id,
            NETCONF_DATA, result);

    final DOMSource wrappedNode = ((AnyXmlNode) child.get()).getValue();
    Preconditions.checkNotNull(wrappedNode.getNode());
    final Element dataNode = (Element) wrappedNode.getNode();

    return Optional.of(dataNode.getTextContent().trim());
}

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

public static <T extends StoreTreeNode<T>> T findNodeChecked(final T tree, final YangInstanceIdentifier path) {
    T current = tree;//from w  w  w  . j  a  v a  2s.c  om

    int i = 1;
    for (PathArgument pathArg : path.getPathArguments()) {
        Optional<T> potential = current.getChild(pathArg);
        if (!potential.isPresent()) {
            throw new IllegalArgumentException(String.format("Child %s is not present in tree.",
                    Iterables.toString(Iterables.limit(path.getPathArguments(), i))));
        }
        current = potential.get();
        ++i;
    }
    return current;
}

From source file:org.deephacks.confit.internal.jpa.JpaBean.java

private static EntityManager getEmOrFail() {
    Optional<EntityManager> em = getEm();
    if (!em.isPresent()) {
        throw JpaEvents.JPA202_MISSING_THREAD_EM();
    }/* w w w  .  j a  v a2  s  .c  o m*/
    return em.get();
}

From source file:org.jboss.aerogear.controller.util.ParameterExtractor.java

private static Consumer getConsumer(final RouteContext routeContext, final Map<String, Consumer> consumers,
        final Parameter<?> parameter) {
    final Set<String> mediaTypes = routeContext.getRoute().consumes();
    final Optional<String> contentType = extractContentType(routeContext);
    if (contentType.isPresent()) {
        final Consumer consumer = consumers.get(contentType.get());
        if (consumer != null) {
            return consumer;
        }//from w w w.ja  v a 2 s  .c o  m
    } else {
        for (String mediaType : mediaTypes) {
            final Consumer consumer = consumers.get(mediaType);
            if (consumer != null) {
                return consumer;
            }
        }
    }
    throw ExceptionBundle.MESSAGES.noConsumerForMediaType(parameter, consumers.values(), mediaTypes);
}

From source file:org.opendaylight.openflowplugin.openflow.md.util.InventoryDataServiceUtil.java

private static <T extends DataObject> T getDataObject(final ReadTransaction readOnlyTransaction,
        final InstanceIdentifier<T> identifier) {
    Optional<T> optionalData = null;
    try {//from   w w w  . ja  va2s .  c om
        optionalData = readOnlyTransaction.read(LogicalDatastoreType.OPERATIONAL, identifier).get();
        if (optionalData.isPresent()) {
            return optionalData.get();
        }
    } catch (ExecutionException | InterruptedException e) {
        LOG.error("Read transaction for identifier {} failed.", identifier, e);
    }
    return null;
}

From source file:org.opendaylight.protocol.bgp.openconfig.impl.util.OpenConfigUtil.java

public static List<AfiSafi> toAfiSafis(final List<BgpTableType> advertizedTables,
        final BiFunction<AfiSafi, BgpTableType, AfiSafi> function) {
    final List<AfiSafi> afiSafis = new ArrayList<>(advertizedTables.size());
    for (final BgpTableType tableType : advertizedTables) {
        final Optional<AfiSafi> afiSafiMaybe = toAfiSafi(
                new BgpTableTypeImpl(tableType.getAfi(), tableType.getSafi()));
        if (afiSafiMaybe.isPresent()) {
            final AfiSafi afiSafi = function.apply(afiSafiMaybe.get(), tableType);
            afiSafis.add(afiSafi);//from  www.  j av a 2s  .co m
        }
    }
    return afiSafis;
}

From source file:org.eclipse.recommenders.utils.rcp.CompilerBindings.java

/**
 * TODO nested anonymous types are not resolved correctly. JDT uses line numbers for inner types instead of $1,..,$n
 *///  w w  w.j  a v a 2 s .co m
public static Optional<ITypeName> toTypeName(@Nullable TypeBinding binding) {
    // XXX generics fail
    if (binding == null) {
        return absent();
    }
    //
    final boolean boundParameterizedType = binding.isBoundParameterizedType();
    final boolean parameterizedType = binding.isParameterizedType();

    // if (binding.isBoundParameterizedType()) {
    // return null;
    // }

    if (binding.isArrayType()) {
        final int dimensions = binding.dimensions();
        final TypeBinding leafComponentType = binding.leafComponentType();
        final String arrayDimensions = StringUtils.repeat("[", dimensions);
        final Optional<ITypeName> typeName = toTypeName(leafComponentType);
        if (!typeName.isPresent()) {
            return absent();
        }
        final ITypeName res = VmTypeName.get(arrayDimensions + typeName.get().getIdentifier());
        return fromNullable(res);
    }
    // TODO: handling of generics is bogus!
    if (binding instanceof TypeVariableBinding) {
        final TypeVariableBinding generic = (TypeVariableBinding) binding;
        if (generic.declaringElement instanceof TypeBinding) {
            // XXX: for this?
            binding = (TypeBinding) generic.declaringElement;
        } else if (generic.superclass != null) {
            // example Tuple<T1 extends List, T2 extends Number) --> for
            // generic.superclass (T2)=Number
            // we replace the generic by its superclass
            binding = generic.superclass;
        }
    }

    String signature = String.valueOf(binding.genericTypeSignature());
    // if (binding instanceof BinaryTypeBinding) {
    // signature = StringUtils.substringBeforeLast(signature, ";");
    // }

    if (signature.length() == 1) {
        // no handling needed. primitives always look the same.
    } else if (signature.endsWith(";")) {
        signature = StringUtils.substringBeforeLast(signature, ";");
    } else {
        signature = "L" + SignatureUtil.stripSignatureToFQN(signature);
    }
    final ITypeName res = VmTypeName.get(signature);
    return fromNullable(res);
}

From source file:org.opendaylight.messenger.impl.MessengerMdsalUtils.java

/**
 * Executes read as a blocking transaction.
 *
 * @param store {@link LogicalDatastoreType} to read
 * @param path {@link InstanceIdentifier} for path to read
 * @param <D> the data object type
 * @return the result as the data object requested
 *//*from w  w  w .j  a  va  2  s  .  co  m*/
public static <D extends org.opendaylight.yangtools.yang.binding.DataObject> D read(final DataBroker dataBroker,
        final LogicalDatastoreType store, final InstanceIdentifier<D> path) {
    D result = null;
    final ReadOnlyTransaction transaction = dataBroker.newReadOnlyTransaction();
    Optional<D> optionalDataObject;
    final CheckedFuture<Optional<D>, ReadFailedException> future = transaction.read(store, path);
    try {
        optionalDataObject = future.checkedGet();
        if (optionalDataObject.isPresent()) {
            result = optionalDataObject.get();
        } else {
            LOG.debug("{}: Failed to read {}", Thread.currentThread().getStackTrace()[1], path);
        }
    } catch (final ReadFailedException e) {
        LOG.warn("Failed to read {} ", path, e);
    }
    transaction.close();
    return result;
}