Example usage for java.util Collections emptyList

Introduction

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

Prototype

@SuppressWarnings("unchecked")
public static final <T> List<T> emptyList()

Source Link

Document

Returns an empty list (immutable).

Usage

From source file:com.xtructure.xutil.valid.strategy.UTestArgumentValidationStrategy.java

@Test(expectedExceptions = { IllegalArgumentException.class })
public void constructorWithNoPredicatesThrowsException() {
    List<Condition> empty = Collections.emptyList();
    new ArgumentValidationStrategy<Object>(empty);
}

From source file:com.pinterest.teletraan.security.UserDataHelper.java

public List<String> getUserGroups(String token) throws Exception {
    if (StringUtils.isEmpty(groupDataUrl)) {
        return Collections.emptyList();
    }//w  w w  . ja v a 2 s  .co  m

    // Get user groups through auth server with user oauth token
    HTTPClient client = new HTTPClient();
    HashMap<String, String> params = new HashMap<>();
    params.put("access_token", token);
    String jsonResponse = client.get(groupDataUrl, params, null, 3);

    // Parse response
    Gson gson = new Gson();
    JsonParser parser = new JsonParser();
    JsonElement element = parser.parse(jsonResponse);

    if (element.getAsJsonObject().has("groups")) {
        JsonArray jsonArray = element.getAsJsonObject().getAsJsonArray("groups");
        String[] groups = gson.fromJson(jsonArray, String[].class);
        LOG.info("Retrieved groups " + Arrays.asList(groups).toString() + " from token.");
        return Arrays.asList(groups);
    }

    return null;
}

From source file:de.mgd.simplesoundboard.dao.FileSystemSoundResourceDao.java

@Override
public List<SoundResource> findExistingSoundResources(final String category) {
    List<File> files = findFilesInStorageDirectoryIfAny(this::isMediaFile, category);
    if (files.isEmpty()) {
        return Collections.emptyList();
    }/*from   ww  w . j  a v  a  2  s  .  co m*/
    files.sort(NameFileComparator.NAME_INSENSITIVE_COMPARATOR);

    return files.stream().map(f -> soundResourceService.createSoundResourceFromFile(f))
            .collect(Collectors.toList());
}

From source file:com.haulmont.timesheets.global.WorkTimeConfigBean.java

public List<DayOfWeek> getWorkDays() {
    List<String> days = workTimeConfig.getWorkDays();
    if (days.isEmpty()) {
        return Collections.emptyList();
    }//from  w  w w .j  a v a  2 s.  c  o m
    List<DayOfWeek> workDays = new ArrayList<>(days.size());
    for (String day : days) {
        workDays.add(DayOfWeek.fromAbbreviation(day));
    }
    return Collections.unmodifiableList(workDays);
}

From source file:com.redhat.ipaas.api.v1.rest.IntegrationDAO.java

@Override
public ListResult<Integration> fetchAll() {
    ConfigMapList list = kubernetesClient.configMaps().withLabel(Integration.LABEL_NAME).list();
    List<ConfigMap> maps = list != null ? list.getItems() : Collections.emptyList();
    List<Integration> integrations = maps.stream().map(c -> toIntegration(c)).collect(Collectors.toList());
    return new ListResult.Builder<Integration>().items(integrations).totalCount(integrations.size()).build();
}

From source file:com.evanzeimet.queryinfo.jpa.result.AbstractTupleToPojoQueryInfoResultConverter.java

@Override
public List<QueryInfoResultType> convert(List<Tuple> tuples) throws QueryInfoException {
    List<QueryInfoResultType> result;

    if (tuples.isEmpty()) {
        result = Collections.emptyList();
    } else {/* w  w  w .ja v a  2  s.c  o  m*/
        Tuple peek = tuples.get(0);
        List<TupleElement<?>> tupleElements = peek.getElements();

        try {
            Map<String, MethodHandle> methodHandles = mapElementMethodHandles(tupleElements);
            result = convertTuples(methodHandles, tuples);
        } catch (Throwable e) {
            throw new QueryInfoException(e);
        }
    }

    return result;
}

From source file:gov.ca.cwds.cals.service.FasFacilityService.java

@UnitOfWork(FAS)
List<FacilityInspectionDto> findInspectionsByFacilityId(String licenseNumber) {
    if (StringUtils.isNotBlank(licenseNumber)) {
        return inspectionDao.findDeficienciesByFacilityNumber(licenseNumber).stream()
                .map(facilityInspectionMapper::toFacilityInspectionDto).collect(Collectors.toList());
    }/*from   ww w.jav a  2  s.c  om*/
    return Collections.emptyList();
}

From source file:org.alfresco.util.exec.RuntimeExecBootstrapBean.java

/**
 * Initializes the bean/* ww  w  .ja v  a2  s  .c o m*/
 * <ul>
 *   <li>failOnError = true</li>
 *   <li>killProcessesOnShutdown = true</li>
 *   <li>enabled = true</li>
 * </ul>
 */
public RuntimeExecBootstrapBean() {
    this.startupCommands = Collections.emptyList();
    this.executionResults = new ArrayList<ExecutionResult>(1);
    failOnError = true;
    killProcessesOnShutdown = true;
    enabled = true;
}

From source file:com.alibaba.cobar.manager.util.CobarStringUtil.java

/**
 * e.g. {"mysql_1","mysql_2","mysql_3","mysql_5"} will return
 * {"mysql_$1-3","mysql_5"}<br/>//from ww  w.  j av  a  2s . co m
 * only merge last number
 */
public static List<String> mergeListedString(String[] input) {
    if (input == null || input.length < 1)
        return Collections.emptyList();
    if (input.length == 1) {
        List<String> rst = new ArrayList<String>(1);
        rst.add(input[0]);
        return rst;
    }
    List<String> list = new ArrayList<String>(input.length);
    for (String str : input)
        list.add(str);
    Collections.sort(list, new Comparator<String>() {
        @Override
        public int compare(String o1, String o2) {
            if (StringUtils.equals(o1, o2))
                return 0;
            if (o1.length() == o2.length())
                return o1.compareTo(o2);
            return o1.length() < o2.length() ? -1 : 1;
        }
    });

    List<String> rst = new ArrayList<String>();

    String prefix = null;
    Integer from = null;
    Integer to = null;
    String last = list.get(0);
    for (int i = 1; i < list.size(); ++i) {
        String cur = list.get(i);
        if (StringUtils.equals(last, cur))
            continue;
        int commonInd = indexOfLastEqualCharacter(last, cur);

        boolean isCon = false;

        if (commonInd >= 0) {
            String suffixLast = last.substring(1 + commonInd);
            String suffixCur = cur.substring(1 + commonInd);
            try {
                int il = Integer.parseInt(suffixLast);
                int ic = Integer.parseInt(suffixCur);
                if (ic - il == 1)
                    isCon = true;
            } catch (Exception e) {
            }
        }

        if (isCon) {
            if (prefix == null)
                prefix = last.substring(0, commonInd + 1);
            if (from == null)
                from = Integer.parseInt(last.substring(commonInd + 1));
            to = Integer.parseInt(cur.substring(commonInd + 1));
        } else if (prefix != null) {
            rst.add(new StringBuilder(prefix).append('$').append(from).append('-').append(to).toString());
            prefix = null;
            from = to = null;
        } else {
            rst.add(last);
        }
        last = cur;
    }

    if (prefix != null) {
        rst.add(new StringBuilder(prefix).append('$').append(from).append('-').append(to).toString());
        prefix = null;
        from = to = null;
    } else {
        rst.add(last);
    }

    return rst;
}