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

Introduction

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

Prototype

public abstract boolean isPresent();

Source Link

Document

Returns true if this holder contains a (non-null) instance.

Usage

From source file:com.dangdang.ddframe.job.internal.reg.RegistryCenterFactory.java

/**
 * .// w ww  .  ja va 2 s .  c o m
 *
 * @param connectString 
 * @param namespace ??
 * @param digest ?
 * @return 
 */
public static CoordinatorRegistryCenter createCoordinatorRegistryCenter(final String connectString,
        final String namespace, final Optional<String> digest) {
    Hasher hasher = Hashing.md5().newHasher().putString(connectString, Charsets.UTF_8).putString(namespace,
            Charsets.UTF_8);
    if (digest.isPresent()) {
        hasher.putString(digest.get(), Charsets.UTF_8);
    }
    HashCode hashCode = hasher.hash();
    if (registryCenterMap.containsKey(hashCode)) {
        return registryCenterMap.get(hashCode);
    }
    ZookeeperConfiguration zkConfig = new ZookeeperConfiguration(connectString, namespace);
    if (digest.isPresent()) {
        zkConfig.setDigest(digest.get());
    }
    CoordinatorRegistryCenter result = new ZookeeperRegistryCenter(zkConfig);
    result.init();
    registryCenterMap.putIfAbsent(hashCode, result);
    return result;
}

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  ww  w  .  j a  v  a2 s  . co m*/
        return projectNode.getEclipseProject().getProjectDirectory().getAbsolutePath();
    }
}

From source file:org.opendaylight.protocol.pcep.spi.AbstractMessageParser.java

public static Message createErrorMsg(final PCEPErrors e, final Optional<Rp> rp) {
    final PcerrMessageBuilder msgBuilder = new PcerrMessageBuilder();
    if (rp.isPresent()) {
        new RequestCaseBuilder()
                .setRequest(new RequestBuilder()
                        .setRps(Collections.singletonList(new RpsBuilder().setRp(rp.get()).build())).build())
                .build();/*from w  w  w .j av a  2  s.c  o m*/
    }
    return new PcerrBuilder().setPcerrMessage(msgBuilder.setErrors(Arrays.asList(new ErrorsBuilder()
            .setErrorObject(
                    new ErrorObjectBuilder().setType(e.getErrorType()).setValue(e.getErrorValue()).build())
            .build())).build()).build();
}

From source file:com.dangdang.ddframe.job.lite.internal.reg.RegistryCenterFactory.java

/**
 * ./*from   w  w w  . j av  a  2s.co  m*/
 *
 * @param connectString 
 * @param namespace ??
 * @param digest ?
 * @return 
 */
public static CoordinatorRegistryCenter createCoordinatorRegistryCenter(final String connectString,
        final String namespace, final Optional<String> digest) {
    Hasher hasher = Hashing.md5().newHasher().putString(connectString, Charsets.UTF_8).putString(namespace,
            Charsets.UTF_8);
    if (digest.isPresent()) {
        hasher.putString(digest.get(), Charsets.UTF_8);
    }
    HashCode hashCode = hasher.hash();
    if (regCenterMap.containsKey(hashCode)) {
        return regCenterMap.get(hashCode);
    }
    ZookeeperConfiguration zkConfig = new ZookeeperConfiguration(connectString, namespace);
    if (digest.isPresent()) {
        zkConfig.setDigest(digest.get());
    }
    CoordinatorRegistryCenter result = new ZookeeperRegistryCenter(zkConfig);
    result.init();
    regCenterMap.putIfAbsent(hashCode, result);
    return result;
}

From source file:org.opendaylight.controller.netconf.util.xml.XmlUtil.java

public static Element createElement(final Document document, final String qName,
        final Optional<String> namespaceURI) {
    if (namespaceURI.isPresent()) {
        final Element element = document.createElementNS(namespaceURI.get(), qName);
        String name = XMLNS_ATTRIBUTE_KEY;
        if (element.getPrefix() != null) {
            name += ":" + element.getPrefix();
        }//  w  ww.ja  va  2s. c om
        element.setAttributeNS(XMLNS_URI, name, namespaceURI.get());
        return element;
    }
    return document.createElement(qName);
}

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 {/*  ww w .j a  v a 2  s.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 Optional<FixedRequestAttributes> getFixedRequestAttributes(ProjectNode projectNode) {
    Optional<IProject> workspaceProject = projectNode.getWorkspaceProject();
    if (workspaceProject.isPresent() && GradleProjectNature.isPresentOn(workspaceProject.get())) {
        ProjectConfiguration projectConfiguration = CorePlugin.projectConfigurationManager()
                .readProjectConfiguration(workspaceProject.get());
        return Optional
                .of(projectConfiguration.toRequestAttributes(ConversionStrategy.IGNORE_WORKSPACE_SETTINGS));
    } else {/*from w w w . j  a  va2 s .  co  m*/
        return Optional.absent();
    }
}

From source file:springfox.documentation.spring.web.readers.operation.ResponseMessagesReader.java

public static String message(OperationContext context) {
    Optional<ResponseStatus> responseStatus = context.findAnnotation(ResponseStatus.class);
    String reasonPhrase = HttpStatus.OK.getReasonPhrase();
    if (responseStatus.isPresent()) {
        reasonPhrase = responseStatus.get().reason();
        if (reasonPhrase.isEmpty()) {
            reasonPhrase = responseStatus.get().value().getReasonPhrase();
        }//www. j  a v  a 2 s  .c  o  m
    }
    return reasonPhrase;
}

From source file:org.apache.gobblin.runtime.JobLauncherFactory.java

/**
 * Creates a new instance for a JobLauncher with a given type
 * @param sysProps          the system/environment properties
 * @param jobProps          the job properties
 * @param launcherTypeValue the type of the launcher; either a {@link JobLauncherType} value or
 *        the name of the class that extends {@link AbstractJobLauncher} and has a constructor
 *        that has a single Properties parameter..
 * @return the JobLauncher instance//from www.j a  va2 s  . c  o m
 * @throws RuntimeException if the instantiation fails
 */
public static JobLauncher newJobLauncher(Properties sysProps, Properties jobProps, String launcherTypeValue,
        SharedResourcesBroker<GobblinScopeTypes> instanceBroker) {
    Optional<JobLauncherType> launcherType = Enums.getIfPresent(JobLauncherType.class, launcherTypeValue);

    try {
        if (launcherType.isPresent()) {
            switch (launcherType.get()) {
            case LOCAL:
                return new LocalJobLauncher(
                        JobConfigurationUtils.combineSysAndJobProperties(sysProps, jobProps), instanceBroker);
            case MAPREDUCE:
                return new MRJobLauncher(JobConfigurationUtils.combineSysAndJobProperties(sysProps, jobProps),
                        instanceBroker);
            default:
                throw new RuntimeException("Unsupported job launcher type: " + launcherType.get().name());
            }
        }

        @SuppressWarnings("unchecked")
        Class<? extends AbstractJobLauncher> launcherClass = (Class<? extends AbstractJobLauncher>) Class
                .forName(launcherTypeValue);
        return launcherClass.getDeclaredConstructor(Properties.class)
                .newInstance(JobConfigurationUtils.combineSysAndJobProperties(sysProps, jobProps));
    } catch (Exception e) {
        throw new RuntimeException("Failed to create job launcher: " + e, e);
    }
}

From source file:org.opendaylight.faas.fabrics.vxlan.adapters.ovs.utils.OfFlowUtils.java

public static Table getTable(NodeBuilder nodeBuilder, short table, ReadOnlyTransaction readTx,
        final LogicalDatastoreType store) {
    try {/*from ww  w .  j a va 2 s .  com*/
        Optional<Table> data = readTx.read(store, createTablePath(nodeBuilder, table)).get();
        if (data.isPresent()) {
            return data.get();
        }
    } catch (InterruptedException | ExecutionException e) {
        LOG.error("Failed to get table {}", table, e);
    }

    LOG.info("Cannot find data for table {} in {}", table, store);
    return null;
}