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:jcomposition.processor.utils.AnnotationUtils.java

@SuppressWarnings("unchecked")
public static IMergeConflictPolicy getCompositionMergeConflictPolicy(TypeElement element,
        ProcessingEnvironment env) {
    Optional<AnnotationValue> value = getParameterFrom(element, Composition.class, "onConflict", env);

    if (value.isPresent()) {
        TypeElement typeElement = MoreTypes.asTypeElement((Type) value.get().getValue());
        try {//from w w  w  . jav a2s .c o  m
            return (IMergeConflictPolicy) Class.forName(typeElement.getQualifiedName().toString())
                    .newInstance();
        } catch (Exception ignore) {
        }
    }

    throw new IncompleteAnnotationException(Composition.class, "onConflict");
}

From source file:org.eclipse.buildship.ui.view.task.TaskNodeSelectionUtils.java

private static String getProjectDirectoryExpression(ProjectNode projectNode) {
    // return the directory as an expression if the project is part of the workspace, otherwise
    // return the absolute path of the project directory available on the Eclipse project model
    Optional<IProject> workspaceProject = projectNode.getWorkspaceProject();
    if (workspaceProject.isPresent()) {
        return ExpressionUtils.encodeWorkspaceLocation(workspaceProject.get());
    } else {//from   w  ww  .  ja v  a 2s.  com
        return projectNode.getEclipseProject().getProjectDirectory().getAbsolutePath();
    }
}

From source file:org.eclipse.viatra.addon.querybasedfeatures.runtime.QueryBasedFeatureSetup.java

private static Set<EStructuralFeature> initializeFeatures(Notifier rootNotifier,
        QueryBasedFeatureSettingDelegateFactory qbfFactory, Set<EStructuralFeature> qbfFeatures) {
    Set<EStructuralFeature> initializedQBFFeatures = Sets.newHashSet();
    for (EStructuralFeature eStructuralFeature : qbfFeatures) {
        Optional<QueryBasedFeatureSettingDelegate> optional = qbfFactory.getSettingDelegate(eStructuralFeature);
        if (optional.isPresent()) {
            QueryBasedFeatureSettingDelegate delegate = optional.get();
            delegate.initializeSettingDelegate(rootNotifier);
            initializedQBFFeatures.add(eStructuralFeature);
        }//from w  w w .  j  a  v a2s . c o m
    }
    return initializedQBFFeatures;
}

From source file:org.opendaylight.lacp.Utils.LacpPortProperties.java

public static NodeConnector getNodeConnector(DataBroker dataService, InstanceIdentifier<NodeConnector> ncId) {
    NodeConnector nc = null;/*  w ww .j a va2 s .  com*/
    LOG.debug("getNodeConnector - Entry");

    ReadOnlyTransaction readTransaction = dataService.newReadOnlyTransaction();

    try {
        Optional<NodeConnector> dataObjectOptional = readTransaction
                .read(LogicalDatastoreType.OPERATIONAL, ncId).get();
        if (dataObjectOptional.isPresent()) {
            nc = (NodeConnector) dataObjectOptional.get();
        }
    } catch (Exception e) {
        LOG.error("Error reading node connector {}", ncId);
        readTransaction.close();
        throw new RuntimeException("Error reading from operational store, node connector : " + ncId, e);
    }
    readTransaction.close();
    if (nc != null) {
        LOG.debug("getNodeConnector - nodeconnector ref obtained sucessfully");
    } else {
        LOG.error("getNodeConnector - nodeconnector ref cannot be obtained");
    }
    LOG.debug("getNodeConnector - Exit");
    return nc;

}

From source file:org.locationtech.geogig.test.integration.remoting.RemotesIndexTestSupport.java

public static List<Ref> getBranches(Repository repo, Optional<String> branch) {
    List<Ref> branches;
    if (branch.isPresent()) {
        Optional<Ref> r = repo.command(RefParse.class).setName(branch.get()).call();
        if (r.isPresent()) {
            branches = Collections.singletonList(r.get());
        } else {//from  w  w w  .ja v a  2 s.  co  m
            return Collections.emptyList();
        }
    } else {
        branches = repo.command(BranchListOp.class).call();
    }
    return branches;
}

From source file:org.opendaylight.netvirt.vpnmanager.utilities.InterfaceUtils.java

public static Optional<String> getMacAddressForInterface(DataBroker dataBroker, String interfaceName) {
    Optional<String> macAddressOptional = Optional.absent();
    InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface> ifStateId = buildStateInterfaceId(
            interfaceName);//from   w  w  w . jav  a 2s  .c  om
    Optional<Interface> ifStateOptional = VpnUtil.read(dataBroker, LogicalDatastoreType.OPERATIONAL, ifStateId);
    if (ifStateOptional.isPresent()) {
        PhysAddress macAddress = ifStateOptional.get().getPhysAddress();
        if (macAddress != null) {
            macAddressOptional = Optional.of(macAddress.getValue());
        }
    }
    return macAddressOptional;
}

From source file:com.facebook.buck.util.environment.MacWifiSsidFinder.java

private static Optional<String> getSsidFromInterface(Optional<Proxy> defaultInterface) {
    if (!defaultInterface.isPresent()) {
        LOG.debug("No Wi-Fi interface found.");
        return Optional.absent();
    }//from w ww.j av a 2  s  .com
    LOG.debug("Getting SSID from Wi-Fi interface: %s", defaultInterface.get());

    // NSString *ssid = [defaultInterface ssid];
    Object ssid = defaultInterface.get().send("ssid");
    if (ssid == null) {
        LOG.debug("No SSID found for interface %s.", defaultInterface.get());
        return Optional.absent();
    }
    if (!(ssid instanceof String)) {
        LOG.error("Fetched SSID, but got unexpected non-string type (got: %s).", ssid);
        return Optional.absent();
    }

    String ssidString = (String) ssid;
    LOG.debug("Found SSID: %s", ssidString);
    return Optional.of(ssidString);
}

From source file:com.facebook.buck.cxx.CxxCompilableEnhancer.java

/**
 * Resolve the map of names to SourcePaths to a map of names to CxxSource objects.
 *//*  w w w.j a va 2s .com*/
public static ImmutableMap<String, CxxSource> resolveCxxSources(ImmutableMap<String, SourceWithFlags> sources) {

    ImmutableMap.Builder<String, CxxSource> cxxSources = ImmutableMap.builder();

    // For each entry in the input C/C++ source, build a CxxSource object to wrap
    // it's name, input path, and output object file path.
    for (ImmutableMap.Entry<String, SourceWithFlags> ent : sources.entrySet()) {
        String extension = Files.getFileExtension(ent.getKey());
        Optional<CxxSource.Type> type = CxxSource.Type.fromExtension(extension);
        if (!type.isPresent()) {
            throw new HumanReadableException("invalid extension \"%s\": %s", extension, ent.getKey());
        }
        cxxSources.put(ent.getKey(),
                CxxSource.of(type.get(), ent.getValue().getSourcePath(), ent.getValue().getFlags()));
    }

    return cxxSources.build();
}

From source file:io.mesosphere.mesos.frameworks.cassandra.ZooKeeperSeedProvider.java

private static Optional<Integer> parseInt(Optional<String> stringOption, String key) {

    if (stringOption.isPresent()) {

        String string = stringOption.get();

        try {/*from w  w w  .j a  v a 2s .c om*/
            return Optional.of(Integer.parseInt(string));

        } catch (NumberFormatException nfe) {

            LOGGER.error(String.format("%s must be set to a valid integer %s provided", key, string), nfe);

            return Optional.absent();
        }
    } else {

        return Optional.absent();
    }
}

From source file:org.sonar.server.computation.task.projectanalysis.component.ComponentRootBuilder.java

private static String createProjectVersion(ScannerReport.Component component, String projectUuid,
        Function<String, Optional<SnapshotDto>> analysisSupplier) {
    String version = trimToNull(component.getVersion());
    if (version != null) {
        return version;
    }/*from   ww  w  .ja  v  a2 s  . c  om*/
    Optional<SnapshotDto> snapshotDto = analysisSupplier.apply(projectUuid);
    if (snapshotDto.isPresent()) {
        return MoreObjects.firstNonNull(snapshotDto.get().getVersion(), DEFAULT_PROJECT_VERSION);
    }
    return DEFAULT_PROJECT_VERSION;
}