Example usage for java.util Collections emptyList

List of usage examples for java.util Collections emptyList

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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.alibaba.napoli.metamorphosis.client.consumer.DefaultLoadBalanceStrategy.java

@Override
public List<String> getPartitions(final String topic, final String consumerId, final List<String> curConsumers,
        final List<String> curPartitions) {
    // ??partition
    final int nPartsPerConsumer = curPartitions.size() / curConsumers.size();
    // ?partitionconsumer
    final int nConsumersWithExtraPart = curPartitions.size() % curConsumers.size();

    log.info("Consumer " + consumerId + " rebalancing the following partitions: " + curPartitions
            + " for topic " + topic + " with consumers: " + curConsumers);
    final int myConsumerPosition = curConsumers.indexOf(consumerId);
    if (myConsumerPosition < 0) {
        log.warn("No broker partions consumed by consumer " + consumerId + " for topic " + topic);
        return Collections.emptyList();
    }//from   w ww .  j a  va2 s.  co  m
    assert myConsumerPosition >= 0;
    // 
    final int startPart = nPartsPerConsumer * myConsumerPosition
            + Math.min(myConsumerPosition, nConsumersWithExtraPart);
    final int nParts = nPartsPerConsumer + (myConsumerPosition + 1 > nConsumersWithExtraPart ? 0 : 1);

    if (nParts <= 0) {
        log.warn("No broker partions consumed by consumer " + consumerId + " for topic " + topic);
        return Collections.emptyList();
    }
    final List<String> rt = new ArrayList<String>();
    for (int i = startPart; i < startPart + nParts; i++) {
        final String partition = curPartitions.get(i);
        rt.add(partition);
    }
    return rt;
}

From source file:org.openmrs.module.personalhr.web.taglib.GlobalPropertyTag.java

@Override
public int doStartTag() {
    this.log.debug("Entering GlobalPropertyTag.doStartTag");
    try {/* w  ww.  ja v a 2  s  .  c o  m*/
        //Add temporary privilege
        //PersonalhrUtil.addTemporaryPrivileges();

        Object value;
        if (StringUtils.hasText(this.listSeparator)) {
            value = Collections.singletonList(this.defaultValue);
        } else {
            value = this.defaultValue;
        }

        // If user is logged in
        if (Context.isAuthenticated()) {
            if (StringUtils.hasText(this.listSeparator)) {
                final String stringVal = Context.getAdministrationService().getGlobalProperty(this.key,
                        this.defaultValue);
                if (stringVal.trim().length() == 0) {
                    value = Collections.emptyList();
                } else {
                    value = Arrays.asList(stringVal.split(this.listSeparator));
                }
            } else {
                value = Context.getAdministrationService().getGlobalProperty(this.key, this.defaultValue);
            }
        }

        try {
            if (this.var != null) {
                this.pageContext.setAttribute(this.var, value);
            } else {
                this.pageContext.getOut().write(value.toString());
            }

        } catch (final Exception e) {
            this.log.error("error getting global property", e);
        }
    } finally {
        //PersonalhrUtil.removeTemporaryPrivileges();
    }
    return SKIP_BODY;
}

From source file:com.heliosdecompiler.helios.controller.RecentFileController.java

public List<File> getRecentFiles() {
    return configuration.getList(String.class, Settings.RECENT_FILES_KEY, Collections.emptyList()).stream()
            .map(File::new).collect(Collectors.toList());
}

From source file:de.hybris.platform.mpintgordermanagement.aspects.ConsignmentActionAspect.java

/**
 * Perform around advice.//from  w  ww  .java2s .c om
 *
 * @param joinPoint
 *           - the join point
 * @return the remaining cancellation entries to be cancelled; never <tt>null</tt>
 * @throws Throwable
 *            when an exception occurs that has been cleared to be rethrown.
 */
public Collection<CancellationEntry> advise(final ProceedingJoinPoint joinPoint) throws Throwable {
    Collection<CancellationEntry> remainingEntries = Collections.emptyList();
    final ConsignmentModel consignment = getConsignment(joinPoint);
    LOGGER.debug("Running consignment action aspect for consignment with code: " + consignment.getCode());
    try {
        getConsignmentBusinessProcessService().triggerChoiceEvent(consignment,
                MpintgordermanagementConstants.CONSIGNMENT_ACTION_EVENT_NAME, getChoice());
        remainingEntries = (Collection<CancellationEntry>) joinPoint.proceed();
        triggerAfter(consignment);
    } catch (final BusinessProcessException e) {
        throw e;
    } catch (final Throwable e) {
        triggerAfter(consignment);
        if (getExceptionsToRethrow().stream().anyMatch(clazz -> (e.getClass().equals(clazz)))) {
            throw e;
        }
        LOGGER.info(String.format(EXCEPTION_MESSAGE, consignment.getCode()));
    }
    return remainingEntries;
}

From source file:com.couchbase.workshop.AirportController.java

/**
 * Returns a list of all airport names, sorted by name.
 *
 * This query does not use the DSL as an example, but can easily be converted.
 *
 * @return list of airport names/*w w  w .  j  ava2 s  .c o m*/
 */
@RequestMapping("/allNames")
public List<String> allAirportNames() {

    // TODO: implement me

    return Collections.emptyList();
}

From source file:com.banyou.backend.service.product.DestService.java

/**
 * /*from www  .ja  v  a 2s.  co  m*/
 * @param pageSize
 *            ? ?1?
 * @param pageNo
 *            
 * @return
 */
public List<Dest> findDests(Long... ids) {
    if (ArrayUtils.isEmpty(ids)) {
        return Collections.emptyList();
    }
    List<Dest> result = new ArrayList<>(ids.length);
    for (Dest dest : destDao.findAll(Arrays.asList(ids))) {
        result.add(dest);
    }
    return result;
}

From source file:cz.cas.lib.proarc.common.workflow.FilterFindParameterQueryTest.java

@Test
public void testFilterNoDbParam() {
    List<TaskParameterView> params = Collections.emptyList();
    TaskParameterFilter filter = new TaskParameterFilter();
    filter.setTaskId(BigDecimal.TEN);
    filter.setLocale(Locale.ENGLISH);
    Task task = new Task();
    task.setTypeRef("task.id1");
    task.setId(filter.getTaskId());/*  w  w  w  . j av a 2  s .c  o  m*/
    List<TaskParameterView> result = new FilterFindParameterQuery(wp).filter(params, filter, task,
            wp.getProfiles());
    assertEquals(2, result.size());
    assertEquals("param.id1", result.get(0).getParamRef());
    assertEquals(DisplayType.TEXT, result.get(0).getDisplayType());
    assertEquals(task.getTypeRef(), result.get(0).getTaskProfileName());
    assertEquals(filter.getTaskId(), result.get(0).getTaskId());
}

From source file:com.celements.web.plugin.cmd.SuggestListCommand.java

public List<Object> getSuggestList(DocumentReference classRef, String fieldname, List<String> excludes,
        String input, String firstCol, String secCol, int limit, XWikiContext context) {
    SuggestBaseClass sbc = new SuggestBaseClass(classRef, fieldname, context);
    String classname = getFullNameFromDocRef(classRef);
    if (excludes == null) {
        excludes = Collections.emptyList();
    }/*from   w w  w  .j av  a  2 s  . c o  m*/
    Boolean isMultiSelect = (sbc.isMultiSelect() != null) && sbc.isMultiSelect();
    input = getSeparatedInput(input, sbc.getSeparators(), isMultiSelect);
    String hibquery = sbc.getSql();
    QueryManager queryManager = Utils.getComponent(QueryManager.class);
    Query query = null;
    String xwql = "";
    List<Object> results = Collections.emptyList();
    if (isExistingClassAndField(classRef, fieldname, context)) {
        if ((hibquery != null) && !"".equals(hibquery.trim())) {
            xwql = getDBStringListXWQL(hibquery, firstCol, secCol);
        } else {
            if ((sbc.isRelationalStorage() != null) && sbc.isRelationalStorage() && isMultiSelect) {
                xwql = "select distinct obj." + fieldname + " from Document as doc, doc.object(" + classname
                        + ") as obj where ?1 member of obj." + fieldname + " ";
            } else if (isMultiSelect) {
                xwql = "select distinct obj." + fieldname + " from Document as doc, doc.object(" + classname
                        + "?) as obj where lower(obj." + fieldname + ") like ?1 ";
            } else {
                xwql = "select distinct obj." + fieldname + " from Document doc, doc.object(" + classname
                        + ") as obj where lower(obj." + fieldname + ") like ?1 ";
            }
        }
        for (int i = 0; i < excludes.size(); i++) {
            xwql += "and doc.fullName <> ?" + (i + 2) + " ";
        }
        mLogger.trace("searching for xwql " + xwql);
        try {
            query = queryManager.createQuery(xwql, Query.XWQL);
            query.bindValue(1, input);
            for (int i = 0; i < excludes.size(); i++) {
                query.bindValue(i + 2, excludes.get(i));
            }
            query.setLimit(limit);
            mLogger.trace(query.getStatement());
            results = query.execute();
        } catch (QueryException qe) {
            mLogger.error("Exception while querying suggest for classname '" + classname + "', fieldname '"
                    + fieldname + "', input '" + input + "'.", qe);
        }
    }
    return results;
}

From source file:br.com.thiaguten.persistence.demo.hbmcore.UserDAOImpl.java

@Override
public List<User> findByName(String name) {
    List<Criterion> criterions = Collections
            .singletonList(Restrictions.ilike("name", name, MatchMode.ANYWHERE));
    List<User> results = persistenceProvider.findByCriteria(getPersistenceClass(), criterions);
    if (results.isEmpty()) {
        return Collections.emptyList();
    } else {//  ww w  . j  a va2  s .  com
        return Collections.unmodifiableList(results);
    }
}

From source file:com.orange.ngsi.model.ContextAttribute.java

public List<ContextMetadata> getMetadata() {
    if (metadata == null) {
        return Collections.emptyList();
    }
    return metadata;
}