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.devicehive.dao.riak.model.RiakDeviceEquipment.java

public static List<RiakDeviceEquipment> convertToEntity(List<DeviceEquipmentVO> equipment) {
    if (equipment == null) {
        return Collections.emptyList();
    }/*from  w w w. j av  a  2  s.com*/
    return equipment.stream().map(RiakDeviceEquipment::convertToEntity).collect(Collectors.toList());
}

From source file:net.daboross.bukkitdev.skywars.util.CrossVersion.java

/**
 * Supports Bukkit earlier than... 1.8?/*from  w w  w  . jav  a  2s . c  om*/
 */
public static Collection<? extends Player> getOnlinePlayers(Server s) {
    try {
        return s.getOnlinePlayers();
    } catch (NoSuchMethodError ignored) {
        Class<? extends Server> theClass = s.getClass();
        try {
            for (Method method : theClass.getMethods()) {
                if ("getOnlinePlayers".equals(method.getName()) && method.getParameterTypes().length == 0
                        && method.getReturnType().isArray()) {
                    return Arrays.asList((Player[]) method.invoke(s));
                }
            }
        } catch (SecurityException | IllegalAccessException | IllegalArgumentException
                | InvocationTargetException ex) {
            SkyStatic.getLogger().log(Level.WARNING,
                    "Couldn't use fallback .getOnlinePlayers method of Server! Acting as if there are no online players!!",
                    ex);
        }
        SkyStatic.getLogger().log(Level.WARNING,
                "Couldn't find old fallback .getOnlinePlayers method of Server! Acting as if there are no online players!!");
    }
    return Collections.emptyList();
}

From source file:org.jspringbot.keyword.expression.ELRunKeyword.java

public static Object runKeyword(String keyword) {
    return doPythonExec(keyword, Collections.emptyList());
}

From source file:ca.uhn.fhir.model.dstu.resource.Binary.java

@Override
public <T extends IElement> List<T> getAllPopulatedChildElementsOfType(Class<T> theType) {
    return Collections.emptyList();
}

From source file:io.cloudslang.lang.runtime.bindings.ArgumentsBindingTest.java

@Test
public void testEmptyBindArguments() throws Exception {
    List<Argument> arguments = Collections.emptyList();
    Map<String, Serializable> result = bindArguments(arguments);
    Assert.assertTrue(result.isEmpty());
}

From source file:com.netflix.spinnaker.echo.artifacts.DockerHubArtifactExtractor.java

@Override
public List<Artifact> getArtifacts(String source, Map payload) {
    WebhookEvent webhookEvent = objectMapper.convertValue(payload, WebhookEvent.class);
    Repository repository = webhookEvent.getRepository();
    PushData pushData = webhookEvent.getPushData();
    if (repository == null || pushData == null) {
        log.warn("Malformed push data from dockerhub: {}", payload);
        return Collections.emptyList();
    }/*from ww w.ja  va  2s.  c o m*/

    String name = String.format("index.docker.io/%s", repository.getRepoName());
    String version = pushData.getTag();
    Map<String, Object> metadata = new ImmutableMap.Builder<String, Object>()
            .put("pusher", pushData.getPusher() != null ? pushData.getPusher() : "").build();

    return Collections.singletonList(
            Artifact.builder().type("docker/image").reference(String.format("%s:%s", name, version)).name(name)
                    .version(version).provenance(webhookEvent.getCallbackUrl()).metadata(metadata).build());
}

From source file:com.homeadvisor.kafdrop.controller.ClusterController.java

@ExceptionHandler(BrokerNotFoundException.class)
private String brokerNotFound(Model model) {
    model.addAttribute("zookeeper", zookeeperProperties);
    model.addAttribute("brokers", Collections.emptyList());
    model.addAttribute("topics", Collections.emptyList());
    return "cluster-overview";

}

From source file:org.openlmis.fulfillment.service.referencedata.OrderableReferenceDataService.java

/**
 * Finds orderables by their ids./* ww w.  j  a va2 s .com*/
 *
 * @param ids ids to look for.
 * @return a page of orderables
 */
public List<OrderableDto> findByIds(Collection<UUID> ids) {
    if (CollectionUtils.isEmpty(ids)) {
        return Collections.emptyList();
    }
    return getPage(RequestParameters.init().set("id", ids)).getContent();
}

From source file:edu.cornell.mannlib.vitro.webapp.search.indexing.AdditionalURIsForObjectProperties.java

@Override
public List<String> findAdditionalURIsToIndex(Statement stmt) {
    if (stmt == null)
        return Collections.emptyList();

    if (stmt.getObject().isLiteral())
        return doDataPropertyStmt(stmt);
    else//from  www.  ja v  a  2 s  .c o  m
        return doObjectPropertyStmt(stmt);
}

From source file:de.micromata.genome.db.jpa.history.impl.CollectionPropertyConverter.java

@Override
public List<HistProp> convert(IEmgr<?> emgr, HistoryMetaInfo historyMetaInfo, Object entity,
        ColumnMetadata pd) {/*from  w  ww.j  a  v a2s .c om*/
    Collection<?> col = (Collection<?>) pd.getGetter().get(entity);
    if (col == null) {
        return Collections.emptyList();
    }
    EntityMetadata targetEntity = pd.getTargetEntity();
    if (col.isEmpty() == true) {
        HistProp hp = new HistProp();
        hp.setName("");
        if (targetEntity != null) {
            hp.setType(targetEntity.getJavaType().getName());
        } else {
            hp.setType(col.getClass().getName());
        }
        hp.setValue("");
        return Collections.singletonList(hp);
    }

    if (targetEntity != null) {
        List<Object> pks = new ArrayList<>();
        for (Object ob : col) {
            Object pk = targetEntity.getIdColumn().getGetter().get(ob);
            if (pk == null) {
                LOG.warn("Unsaved entity in history");
                return Collections.emptyList();
            }
            pks.add(pk);
        }
        String sval = StringUtils.join(pks, ',');
        HistProp hp = new HistProp();
        hp.setName("");
        hp.setType(targetEntity.getJavaType().getName());
        hp.setValue(sval);
        return Collections.singletonList(hp);
    }

    Map<Long, Class<?>> pkSet = new TreeMap<>();
    int idx = 0;

    for (Object ob : col) {

        if ((ob instanceof DbRecord) == false) {
            LOG.warn("Cannot create collection history on non DbRecord: " + entity.getClass().getName() + "."
                    + pd.getName() + "[" + idx + "]" + ob.getClass().getName());
            continue;
        }
        DbRecord<?> rec = (DbRecord<?>) ob;
        Long lp = rec.getPkAsLong();
        if (lp == null) {
            LOG.warn("History; Unsafed PK in history: " + entity.getClass().getName() + "." + pd.getName() + "["
                    + idx + "]" + ob.getClass().getName());
            continue;
        }
        pkSet.put(lp, ob.getClass());
        ++idx;
    }
    idx = 0;
    List<HistProp> hpret = new ArrayList<>();
    for (Map.Entry<Long, Class<?>> me : pkSet.entrySet()) {
        HistProp hp = new HistProp();
        hp.setName(me.getValue().toString());
        hp.setType(col.getClass().getName() + "<" + me.getValue().getName() + ">");
        hp.setValue(me.getValue().toString());
        hpret.add(hp);
        ++idx;
    }
    return hpret;
}