Example usage for java.util Collections EMPTY_LIST

Introduction

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

Prototype

List EMPTY_LIST

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Document

The empty list (immutable).

Usage

From source file:com.adobe.acs.commons.workflow.impl.WorkflowPackageManagerImpl.java

/**
 * {@inheritDoc}//from w  ww .  ja va2  s .c  o  m
 */
public final List<String> getPaths(final ResourceResolver resourceResolver, final String path,
        final String[] nodeTypes) throws RepositoryException {
    final List<String> collectionPaths = new ArrayList<String>();

    final Resource resource = resourceResolver.getResource(path);

    if (resource == null) {
        log.warn("Requesting paths for a non-existent Resource [ {} ]; returning empty results.", path);
        return Collections.EMPTY_LIST;

    } else if (!isWorkflowPackage(resourceResolver, path)) {
        log.debug("Requesting paths for a non-Resource Collection  [ {} ]; returning provided path.", path);
        return Arrays.asList(new String[] { path });

    } else {
        final PageManager pageManager = resourceResolver.adaptTo(PageManager.class);
        final Page page = pageManager.getContainingPage(path);

        if (page != null && page.getContentResource() != null) {
            final Node node = page.getContentResource().adaptTo(Node.class);

            final ResourceCollection resourceCollection = ResourceCollectionUtil.getResourceCollection(node,
                    resourceCollectionManager);

            if (resourceCollection != null) {
                final List<Node> members = resourceCollection.list(nodeTypes);
                for (final Node member : members) {
                    collectionPaths.add(member.getPath());
                }
                return collectionPaths;
            }
        }

        return Arrays.asList(new String[] { path });
    }
}

---

From source file:uk.ac.ebi.intact.editor.controller.curate.interaction.AbstractParticipantImportController.java

public void importSelected(ActionEvent evt) {
    getParticipantImportService().getIntactDao().getUserContext().setUser(getCurrentUser());

    CvObjectService cvObjectService = getCvService();

    if (cvBiologicalRole == null) {
        cvBiologicalRole = cvObjectService.getDefaultBiologicalRole();
    }/*from  w w  w  . j av  a 2s  .co  m*/

    initialiseOtherProperties();

    if (!isLoadAsMoleculeSet) {
        for (ImportCandidate candidate : importCandidates) {
            if (candidate.isSelected()) {
                T participant = toParticipant(candidate);
                processAddedParticipant(participant);
            }
        }
    } else if (!importCandidates.isEmpty()) {
        String query = StringUtils.join(participantsToImport, "_");
        IntactInteractorPool newPool = new IntactInteractorPool(query);
        ImportCandidate firstSelected = new ImportCandidate(query, newPool);
        for (ImportCandidate candidate : importCandidates) {
            if (candidate.isSelected()) {
                if (candidate.isChain() || candidate.isIsoform()) {

                    changesController.markAsHiddenChange(candidate.getInteractor(), null,
                            Collections.EMPTY_LIST,
                            getParticipantImportService().getIntactDao().getSynchronizerContext()
                                    .getInteractorSynchronizer(),
                            "Interactor " + candidate.getInteractor().getShortName());
                }
                newPool.add(candidate.getInteractor());
            }
        }

        if (firstSelected != null) {
            firstSelected.setInteractor(newPool);
            T participant = toParticipant(firstSelected);
            processAddedParticipant(participant);
        }
    }

    doSave();

    participantsToImport = new String[0];
    // reset load molecule set
    this.isLoadAsMoleculeSet = false;
    cvBiologicalRole = cvObjectService.getDefaultBiologicalRole();
    resetOtherProperties();
}

---

From source file:com.microsoft.alm.plugin.idea.git.ui.branch.CreateBranchModelTest.java

@Test
public void testConstructor_NoRemotesFound() {
    when(mockGitRepoInfo.getRemoteBranches()).thenReturn(Collections.EMPTY_LIST);
    underTest = new CreateBranchModel(mockProject, defaultBranchName, mockGitRepository);

    assertNotNull(underTest.getRemoteBranchDropdownModel());
    assertEquals(0, underTest.getRemoteBranchDropdownModel().getSize());
    assertNull(underTest.getSelectedRemoteBranch());
}

---

From source file:com.sulacosoft.bitcoindconnector4j.BitcoindApiHandler.java

private Object deserializeResult(Method method, Object result) {
    if (result instanceof MorphDynaBean) {
        return JSONObject.toBean(JSONObject.fromObject(JSONSerializer.toJSON((MorphDynaBean) result)),
                method.getReturnType());
    } else if (result instanceof List) {
        List<?> incomingList = (List<?>) result;
        if (incomingList.size() == 0)
            return Collections.EMPTY_LIST;

        ParameterizedType type = (ParameterizedType) method.getGenericReturnType(); // method.getGenericType();
        Class<?> clazz = (Class<?>) type.getActualTypeArguments()[0];

        ArrayList<Object> outcomingList = new ArrayList<>();
        if (incomingList.get(0) instanceof MorphDynaBean) {
            for (Object entity : incomingList) {
                Object ent = JSONObject.toBean(JSONObject.fromObject(entity), clazz);
                outcomingList.add(ent);//from w  ww.  java2 s  .  com
            }
        } else {
            outcomingList.addAll(incomingList);
        }
        return outcomingList;
    } else {
        return result;
    }
}

---

From source file:com.scaleoutsoftware.soss.hserver.RunMapper.java

@SuppressWarnings("unchecked")
public RunMapper(HServerInvocationParameters invocationParameters)
        throws IOException, ClassNotFoundException, NoSuchMethodException {
    _logger.debug("Starting mapper. Parameters: " + invocationParameters);

    this.invocationParameters = invocationParameters;

    if (invocationParameters.isOldApi()) {
        mapperWrapper = new MapperWrapperMapred<INKEY, INVALUE, OUTKEY, OUTVALUE>(invocationParameters);
    } else {/*  w w w  .  j a  v a  2 s.  co  m*/
        mapperWrapper = new MapperWrapperMapreduce<INKEY, INVALUE, OUTKEY, OUTVALUE>(invocationParameters);
    }

    configuration = (Configuration) invocationParameters.getConfiguration();
    invocationId = invocationParameters.getAppId();

    //This happens under _jobLock, so we wont interfere with the running tasks

    runMapContext = new RunHadoopMapContext<OUTKEY, OUTVALUE>(
            invocationParameters.getHadoopPartitionToSossRegionMapping(), invocationParameters.getAppId(),
            HServerParameters.getSetting(MAP_OUTPUTCHUNKSIZE_KB, configuration),
            HServerParameters.getSetting(MAP_HASHTABLESIZE, configuration),
            HServerParameters.getSetting(MAP_MAXTEMPMEMORY_KB, configuration),
            mapperWrapper.getMapOutputKeyClass(), mapperWrapper.getMapOutputValueClass(), false, 0,
            mapperWrapper, mapperWrapper.getPartitioner(), configuration);

    isSingleResultOptimisation = invocationParameters.isSingleResultOptimisation();

    inputSplitList = invocationParameters.getInputSplits();

    List<Integer> splitIndexList = null;
    for (InetAddress address : NetUtils.getLocalInterfaces()) {
        splitIndexList = ((InvocationParameters<?>) invocationParameters).getInputSplitAssignment()
                .get(address);
        if (splitIndexList != null) {
            //Handle the workload sharing between multiple JVMs
            //We assume that split list for the IP comes to each JVM in the same order
            if (InvocationWorker.getNumberOfWorkers() > 1) {
                int listSize = splitIndexList.size();
                int splitsPerHost = Math.max(1, listSize / InvocationWorker.getNumberOfWorkers() + 1);
                int startIndex = splitsPerHost * InvocationWorker.getIgWorkerIndex();

                if (startIndex < listSize) {
                    int stopIndex = Math.min(listSize, startIndex + splitsPerHost);
                    splitIndexList = splitIndexList.subList(startIndex, stopIndex);
                } else {
                    splitIndexList = Collections.EMPTY_LIST;
                }
                _logger.warn("Split list to process:" + splitIndexList + ", ;" + listSize + "," + splitsPerHost
                        + "," + startIndex);
            }
            break;
        }
    }

    if (splitIndexList != null && splitIndexList.size() > 0) { //We found our split list
        numberOfSplits = splitIndexList.size();
        splitIndexesForThisHost = new ArrayBlockingQueue<Integer>(numberOfSplits);
        splitIndexesForThisHost.addAll(splitIndexList);
        numberOfWorkers = Math.max(1,
                Math.min(invocationParameters.getNumberOfSlotsPerNode(), splitIndexesForThisHost.size()));

    } else { //Short circuit the mapper
        numberOfSplits = 0;
        splitIndexesForThisHost = null;
        numberOfWorkers = 0;
    }

    //If there is a cap on maximum number of slots, apply it
    int maxSlots = HServerParameters.getSetting(HServerParameters.MAX_SLOTS, configuration);
    if (maxSlots > 0) {
        numberOfWorkers = Math.min(numberOfWorkers, maxSlots);
    }

}

---

From source file:com.smartitengineering.cms.client.impl.RootResourceImpl.java

@Override
public Collection<WorkspaceContentResouce> getWorkspaces() {
    final Feed feed = getLastReadStateOfEntity();
    if (feed == null) {
        return Collections.EMPTY_LIST;
    }//from  w w w  . j a v  a 2  s .co  m
    List<Entry> entries = feed.getEntries();
    List<WorkspaceContentResouce> list = new ArrayList<WorkspaceContentResouce>(entries.size());
    for (Entry entry : entries) {
        final List<Link> links = entry.getLinks(WorkspaceContentResouce.WORKSPACE_CONTENT);
        Link link = null;
        for (Link tmp : links) {
            if (MediaType.APPLICATION_JSON.equals(tmp.getMimeType().toString())) {
                link = tmp;
            }
        }
        list.add(
                new WorkspaceContentResourceImpl(this, AtomClientUtil.convertFromAtomLinkToResourceLink(link)));
    }
    return list;
}

---

From source file:com.linkedin.pinot.core.startree.BaseStarTreeIndexTest.java

/**
 * Helper method to compute the sums using raw index.
 *  @param metricNames// w w w .j av  a  2  s . c om
 * @param brokerRequest
 */
protected Map<String, double[]> computeSumUsingRawDocs(IndexSegment segment, List<String> metricNames,
        BrokerRequest brokerRequest) {
    FilterPlanNode planNode = new FilterPlanNode(segment, brokerRequest);
    Operator rawOperator = planNode.run();
    BlockDocIdIterator rawDocIdIterator = rawOperator.nextBlock().getBlockDocIdSet().iterator();

    List<String> groupByColumns = Collections.EMPTY_LIST;
    if (brokerRequest.isSetAggregationsInfo() && brokerRequest.isSetGroupBy()) {
        groupByColumns = brokerRequest.getGroupBy().getColumns();
    }
    return computeSum(segment, rawDocIdIterator, metricNames, groupByColumns);
}

---

From source file:de.csw.expertfinder.ExpertFinder.java

/**
 * Returns the names of all topics that are covered by the underlying domain model.
 * @return a list containing the names of all topics that are covered by the underlying domain model.
 *//*from  w  w  w .ja  v  a 2  s . c  om*/
public List<String> getAvailableTopicLabels() {
    if (applicationState != ApplicationState.INIT_DONE)
        return Collections.EMPTY_LIST;

    if (topicLabelsSorted == null) {
        Set<String> topicLabelsUnsorted = OntologyIndex.get().getAllConceptLabels();
        topicLabelsSorted = new ArrayList<String>(topicLabelsUnsorted.size());
        topicLabelsSorted.addAll(topicLabelsUnsorted);
        Collections.sort(topicLabelsSorted);
    }
    return topicLabelsSorted;
}

---

From source file:com.redhat.rhn.taskomatic.core.TaskomaticDaemon.java

private boolean isTomcatUp() {
    boolean toRet = false;
    try {/*  w ww .j  a  va 2  s  . co  m*/
        XmlRpcClient client = new XmlRpcClient("http://localhost/rpc/api", false);
        Object obj = client.invoke("api.getVersion", Collections.EMPTY_LIST);
        if (obj instanceof String) {
            toRet = true;
        }
    } catch (Exception e) {
        toRet = false;
    }
    return toRet;
}

---

From source file:io.seldon.api.state.ZkSubscriptionHandler.java

public Collection<ChildData> getImmediateChildren(String node) {
    HashSet<ChildData> toReturn = new HashSet<>();

    TreeCache cache = findParentCache(node);
    if (cache == null)
        return Collections.EMPTY_LIST;

    Map<String, ChildData> children = cache.getCurrentChildren(node);
    if (children == null)
        return toReturn;
    for (ChildData child : children.values())
        toReturn.addAll(getChildren(child.getPath(), cache));
    toReturn.addAll(children.values());//from  w  w w  .j  av  a  2  s.  c om
    return toReturn;
}

---

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