Example usage for java.util Collections emptySet

List of usage examples for java.util Collections emptySet

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Introduction

In this page you can find the example usage for java.util Collections emptySet.

Prototype

@SuppressWarnings("unchecked")
public static final <T> Set<T> emptySet()

Source Link

Document

Returns an empty set (immutable).

Usage

From source file:org.apache.solr.client.solrj.impl.CloudSolrClientCacheTest.java

public void testCaching() throws Exception {
    String collName = "gettingstarted";
    Set<String> livenodes = new HashSet<>();
    Map<String, ClusterState.CollectionRef> refs = new HashMap<>();
    Map<String, DocCollection> colls = new HashMap<>();

    class Ref extends ClusterState.CollectionRef {
        private String c;

        public Ref(String c) {
            super(null);
            this.c = c;
        }//from ww  w. j av a2  s  .co  m

        @Override
        public boolean isLazilyLoaded() {
            return true;
        }

        @Override
        public DocCollection get() {
            gets.incrementAndGet();
            return colls.get(c);
        }
    }
    Map<String, Function> responses = new HashMap<>();
    NamedList okResponse = new NamedList();
    okResponse.add("responseHeader", new NamedList<>(Collections.singletonMap("status", 0)));

    LBHttpSolrClient mockLbclient = getMockLbHttpSolrClient(responses);
    AtomicInteger lbhttpRequestCount = new AtomicInteger();
    try (CloudSolrClient cloudClient = new CloudSolrClientBuilder(getStateProvider(livenodes, refs))
            .withLBHttpSolrClient(mockLbclient).build()) {
        livenodes.addAll(ImmutableSet.of("192.168.1.108:7574_solr", "192.168.1.108:8983_solr"));
        ClusterState cs = ClusterState.load(1, coll1State.getBytes(UTF_8), Collections.emptySet(),
                "/collections/gettingstarted/state.json");
        refs.put(collName, new Ref(collName));
        colls.put(collName, cs.getCollectionOrNull(collName));
        responses.put("request", o -> {
            int i = lbhttpRequestCount.incrementAndGet();
            if (i == 1)
                return new ConnectException("TEST");
            if (i == 2)
                return new SocketException("TEST");
            if (i == 3)
                return new NoHttpResponseException("TEST");
            return okResponse;
        });
        UpdateRequest update = new UpdateRequest().add("id", "123", "desc", "Something 0");

        cloudClient.request(update, collName);
        assertEquals(2, refs.get(collName).getCount());
    }

}

From source file:com.jgoetsch.ib.handlers.SingleHandlerManager.java

public Collection<EWrapper> getHandlers(String eventName, int objectId) {
    EWrapper handler, noObjectHandler;/*from   w w  w  .j  a va 2  s.co m*/
    synchronized (this) {
        handler = handlerMap.get(eventName, objectId);
        noObjectHandler = handlerMap.get(eventName, 0);
    }
    if (handler != null && noObjectHandler != null && handler != noObjectHandler)
        return Arrays.asList(handler, noObjectHandler);
    else if (handler != null)
        return Collections.singleton(handler);
    else if (noObjectHandler != null)
        return Collections.singleton(noObjectHandler);
    else
        return Collections.emptySet();
}

From source file:org.yamj.core.database.service.CommonStorageService.java

/**
 * Delete a stage file and all associated entities.
 *
 * @param id/*from  w w  w. j a  v a 2s  .  c o m*/
 * @return list of cached file names which must be deleted also
 */
@Transactional
public Set<String> deleteStageFile(Long id) {
    // get the stage file
    StageFile stageFile = this.stagingDao.getStageFile(id);

    // check stage file
    if (stageFile == null) {
        // not found
        return Collections.emptySet();
    }
    if (StatusType.DELETED != stageFile.getStatus()) {
        // status must still be DELETE
        return Collections.emptySet();
    }

    Set<String> filesToDelete;
    switch (stageFile.getFileType()) {
    case VIDEO:
        filesToDelete = this.deleteVideoStageFile(stageFile);
        break;
    case IMAGE:
        filesToDelete = this.deleteImageStageFile(stageFile);
        break;
    case WATCHED:
        this.deleteWatchedStageFile(stageFile);
        filesToDelete = Collections.emptySet();
        break;
    default:
        this.delete(stageFile);
        filesToDelete = Collections.emptySet();
        break;
    }
    return filesToDelete;
}

From source file:gov.nih.nci.caintegrator.application.query.CopyNumberAlterationCriterionHandler.java

/**
 * {@inheritDoc}//from  www  .  j  a  va2 s. c o  m
 */
@Override
Set<AbstractReporter> getReporterMatches(CaIntegrator2Dao dao, Study study, ReporterTypeEnum reporterType,
        Platform platform) {
    return Collections.emptySet();
}

From source file:com.edmunds.etm.system.impl.ControllerMonitor.java

@Autowired
public ControllerMonitor(ZooKeeperConnection connection, ControllerPaths controllerPaths,
        ObjectSerializer objectSerializer, ProjectProperties projectProperties,
        FailoverMonitor failoverMonitor) {
    this.connection = connection;
    this.controllerPaths = controllerPaths;
    this.objectSerializer = objectSerializer;
    this.failoverMonitor = failoverMonitor;

    this.localController = createControllerInstance(projectProperties);
    this.callbackInstance = new Callback();
    this.peerControllers = Collections.emptySet();

    // Register for failover notifications
    failoverMonitor.addListener(this);

    // Initialize zookeeper tree watcher
    this.controllerWatcher = new ZooKeeperTreeWatcher(connection, 0, controllerPaths.getConnected(),
            callbackInstance);//from  w  ww  .j a  va2 s.c om
}

From source file:org.eclipse.winery.repository.resources.imports.xsdimports.XSDImportResource.java

@SuppressWarnings("unchecked")
public Collection<String> getAllDefinedLocalNames(short type) {
    RepositoryFileReference ref = this.getXSDFileReference();
    if (ref == null) {
        return Collections.emptySet();
    }/*from ww w.  j  av  a 2 s  .  c o  m*/
    Date lastUpdate = Repository.INSTANCE.getLastUpdate(ref);

    String cacheFileName = "definedLocalNames " + Integer.toString(type) + ".cache";
    RepositoryFileReference cacheRef = new RepositoryFileReference(this.id, cacheFileName);
    boolean cacheNeedsUpdate = true;
    if (Repository.INSTANCE.exists(cacheRef)) {
        Date lastUpdateCache = Repository.INSTANCE.getLastUpdate(cacheRef);
        if (lastUpdate.compareTo(lastUpdateCache) <= 0) {
            cacheNeedsUpdate = false;
        }
    }

    List<String> result;
    if (cacheNeedsUpdate) {

        XSModel model = this.getXSModel();
        if (model == null) {
            return Collections.emptySet();
        }
        XSNamedMap components = model.getComponents(type);
        //@SuppressWarnings("unchecked")
        int len = components.getLength();
        result = new ArrayList<>(len);
        for (int i = 0; i < len; i++) {
            XSObject item = components.item(i);
            // if queried for TYPE_DEFINITION, then XSD base types (such as IDREF) are also returned
            // We want to return only types defined in the namespace of this resource
            if (item.getNamespace().equals(this.id.getNamespace().getDecoded())) {
                result.add(item.getName());
            }
        }

        String cacheContent = null;
        try {
            cacheContent = Utils.mapper.writeValueAsString(result);
        } catch (JsonProcessingException e) {
            XSDImportResource.LOGGER.error("Could not generate cache content", e);
        }
        try {
            Repository.INSTANCE.putContentToFile(cacheRef, cacheContent, MediaType.APPLICATION_JSON_TYPE);
        } catch (IOException e) {
            XSDImportResource.LOGGER.error("Could not update cache", e);
        }
    } else {
        // read content from cache
        // cache should contain most recent information
        try (InputStream is = Repository.INSTANCE.newInputStream(cacheRef)) {
            result = Utils.mapper.readValue(is, java.util.List.class);
        } catch (IOException e) {
            XSDImportResource.LOGGER.error("Could not read from cache", e);
            result = Collections.emptyList();
        }
    }
    return result;
}

From source file:io.github.moosbusch.lumpi.application.spi.AbstractLumpiApplication.java

@Override
public Collection<String> getBeanConfigurationPackages() {
    return Collections.emptySet();
}

From source file:ca.uhn.fhir.jpa.dao.SearchParamExtractorDstu1.java

@Override
public Set<ResourceIndexedSearchParamCoords> extractSearchParamCoords(ResourceTable theEntity,
        IBaseResource theResource) {
    return Collections.emptySet();
}

From source file:io.scigraph.internal.CypherUtil.java

public Set<RelationshipType> getEntailedRelationshipTypes(Collection<String> parents) {
    Set<String> relationshipNames = getEntailedRelationshipNames(parents);
    Collection<RelationshipType> relationshipTypes = Collections.emptySet();
    try (Transaction tx = graphDb.beginTx()) {
        relationshipTypes = transform(relationshipNames, new Function<String, RelationshipType>() {
            @Override//from w ww .ja  v  a 2  s.  co m
            public RelationshipType apply(String name) {
                return DynamicRelationshipType.withName(name);
            }
        });
        tx.success();
    }
    return new HashSet<RelationshipType>(relationshipTypes);
}

From source file:io.mandrel.transport.thrift.ThriftClients.java

@PostConstruct
public void init() {

    GenericKeyedObjectPoolConfig poolConfig = new GenericKeyedObjectPoolConfig();
    poolConfig.setMaxTotalPerKey(4);//from   w  w  w. j  av a2s .c om
    poolConfig.setMinIdlePerKey(1);

    ThriftCatalog catalog = new ThriftCatalog();
    catalog.addDefaultCoercions(MandrelCoercions.class);
    ThriftCodecManager codecManager = new ThriftCodecManager(
            new CompilerThriftCodecFactory(ThriftCodecManager.class.getClassLoader()), catalog,
            Collections.emptySet());

    NettyClientConfig config = NettyClientConfig.newBuilder().build();
    NiftyClient niftyClient = new NiftyClient(config, local);
    ThriftClientManager clientManager = new ThriftClientManager(codecManager, niftyClient,
            Collections.emptySet());

    frontiers = new KeyedClientPool<>(FrontierContract.class, poolConfig, 9090,
            // Deflater.BEST_SPEED
            null, clientManager);
    prepare(frontiers);

    controllers = new KeyedClientPool<>(ControllerContract.class, poolConfig, 9090,
            // Deflater.BEST_SPEED
            null, clientManager);
    prepare(controllers);

    workers = new KeyedClientPool<>(WorkerContract.class, poolConfig, 9090,
            // Deflater.BEST_SPEED
            null, clientManager);
    prepare(workers);

    nodes = new KeyedClientPool<>(NodeContract.class, poolConfig, 9090,
            // Deflater.BEST_SPEED
            null, clientManager);
    prepare(nodes);
}