Example usage for org.apache.commons.collections4 CollectionUtils isEmpty

Introduction

In this page you can find the example usage for org.apache.commons.collections4 CollectionUtils isEmpty.

Prototype

public static boolean isEmpty(final Collection<?> coll)

Source Link

Document

Null-safe check if the specified collection is empty.

Usage

From source file:io.cloudslang.lang.compiler.modeller.transformers.NavigateTransformer.java

@Override
public TransformModellingResult<List<Map<String, String>>> transform(List<Object> rawData,
        SensitivityLevel sensitivityLevel) {
    List<Map<String, String>> transformedData = new ArrayList<>();
    List<RuntimeException> errors = new ArrayList<>();

    if (CollectionUtils.isEmpty(rawData)) {
        return new BasicTransformModellingResult<>(transformedData, errors);
    }//from w  w w. j av  a2s . c  om

    for (Object elementAsObject : rawData) {
        try {
            if (elementAsObject instanceof Map) {
                Map elementAsMap = (Map) elementAsObject;
                if (elementAsMap.size() != 1) {
                    throw new RuntimeException("Each list item in the navigate "
                            + "section should contain exactly one key:value pair.");
                }
                // - SUCCESS: some_step
                Map.Entry navigationEntry = (Map.Entry) elementAsMap.entrySet().iterator().next();
                Object navigationKey = navigationEntry.getKey();
                Object navigationValue = navigationEntry.getValue();
                if (!(navigationKey instanceof String)) {
                    throw new RuntimeException("Each key in the navigate section should be a string.");
                }
                if (!(navigationValue instanceof String)) {
                    throw new RuntimeException("Each value in the navigate section should be a string.");
                }
                @SuppressWarnings("unchecked")
                Map<String, String> elementAsStringMap = elementAsMap;
                transformedData.add(elementAsStringMap);
            } else {
                throw new RuntimeException("Navigation rule should be a Map. Actual type is "
                        + elementAsObject.getClass().getName() + ": " + elementAsObject);
            }
        } catch (RuntimeException rex) {
            errors.add(rex);
        }
    }

    try {
        List<Map<String, String>> navigationStrings = (List<Map<String, String>>) (List) rawData;
        if (!navigationStrings.isEmpty() && errors.isEmpty()) {
            executableValidator.validateNavigationStrings(navigationStrings);
        }
    } catch (RuntimeException e) {
        errors.add(e);
    }
    return new BasicTransformModellingResult<>(transformedData, errors);
}

From source file:com.ebay.myriad.scheduler.TaskTerminator.java

@Override
public void run() {
    Set<String> killableTasks = schedulerState.getKillableTasks();

    if (CollectionUtils.isEmpty(killableTasks)) {
        return;/* w w w . jav a 2s.co  m*/
    }

    Status driverStatus = driverManager.getDriverStatus();
    if (Status.DRIVER_RUNNING != driverStatus) {
        LOGGER.warn("Cannot kill tasks, as driver is not running. Status: {}", driverStatus);
        return;
    }

    Iterator<String> iterator = killableTasks.iterator();

    while (iterator.hasNext()) {
        String taskIdToKill = iterator.next();
        NodeTask task = this.schedulerState.getTask(taskIdToKill);
        TaskID mesosTaskId = task.getMesosTaskId();
        Status status = this.driverManager.kill(mesosTaskId);
        this.schedulerState.removeTask(taskIdToKill);
        Preconditions.checkState(status == Status.DRIVER_RUNNING);
    }
}

From source file:com.mirth.connect.server.api.servlets.CodeTemplateServlet.java

@Override
public List<CodeTemplateLibrary> getCodeTemplateLibraries(Set<String> libraryIds,
        boolean includeCodeTemplates) {
    try {/*from w w  w  .j a v a  2  s  .  c o m*/
        if (CollectionUtils.isEmpty(libraryIds)) {
            libraryIds = null;
        }
        return codeTemplateController.getLibraries(libraryIds, includeCodeTemplates);
    } catch (ControllerException e) {
        throw new MirthApiException(e);
    }
}

From source file:com.mpush.cache.redis.manager.ZKRedisClusterManager.java

/**
 * zk ??//from  ww  w. j  a va2s.c o  m
 */
@Override
public void init() {
    Logs.Console.info("begin init redis cluster");
    if (!ZKClient.I.isRunning())
        throw new RedisException("init redis cluster ex, ZK client not running.");

    if (CollectionUtils.isNotEmpty(CC.mp.redis.nodes)) {
        register(CC.mp.redis.nodes);
    }

    watcher.watch();
    Collection<ZKRedisNode> nodes = watcher.getCache().values();
    if (CollectionUtils.isEmpty(nodes)) {
        Logs.REDIS.error("init redis client error, redis server is none.");
        throw new RedisException("init redis client error, redis server is none.");
    }

    if (nodes.isEmpty())
        throw new RedisException("init redis sever fail groupList is null");
    Logs.Console.info("init redis cluster success...");
}

From source file:com.jkoolcloud.tnt4j.streams.scenario.WsScenario.java

/**
 * Checks if scenario has no steps defined.
 *
 * @return flag indicating scenario has no steps defined
 *//*from  ww  w.j  a va  2  s.co m*/
public boolean isEmpty() {
    return CollectionUtils.isEmpty(stepsList);
}

From source file:cop.maven.plugins.RamlMojo.java

@Override
public Set<File> getSourceDirectories() {
    if (CollectionUtils.isEmpty(sourceDirectories))
        return Collections.singleton(new File(project.getBuild().getSourceDirectory()));

    Set<File> dirs = new HashSet<>();

    for (File file : sourceDirectories)
        if (file != null && file.isDirectory())
            dirs.add(file);//from  w  w  w  .j  a  v a2s  .c o m

    return dirs;
}

From source file:com.evolveum.midpoint.web.component.prism.ShadowAssociationWrapper.java

@Override
public PrismContainer<ShadowAssociationType> createContainerAddDelta() throws SchemaException {
    if (CollectionUtils.isEmpty(getValues())) {
        return null;
    }/*from w  ww.  j ava2  s .  co  m*/

    PrismContainer<ShadowAssociationType> shadowAssociation = getItemDefinition().instantiate();

    //we know that there is always only one value
    ContainerValueWrapper<ShadowAssociationType> containerValueWrappers = getValues().iterator().next();
    for (ItemWrapper itemWrapper : containerValueWrappers.getItems()) {

        if (!(itemWrapper instanceof ReferenceWrapper)) {
            LOGGER.warn("Item in shadow association value wrapper is not an reference. Should not happen.");
            continue;
        }

        ReferenceWrapper refWrapper = (ReferenceWrapper) itemWrapper;
        if (!refWrapper.hasChanged()) {
            return null;
        }

        PrismReference updatedRef = refWrapper.getUpdatedItem(getItem().getPrismContext());

        for (PrismReferenceValue updatedRefValue : updatedRef.getValues()) {
            ShadowAssociationType shadowAssociationType = new ShadowAssociationType();
            shadowAssociationType.setName(refWrapper.getName());
            shadowAssociationType.setShadowRef(ObjectTypeUtil.createObjectRef(updatedRefValue));
            shadowAssociation.add(shadowAssociationType.asPrismContainerValue());
        }

    }

    if (shadowAssociation.isEmpty() || shadowAssociation.getValues().isEmpty()) {
        return null;
    }
    return shadowAssociation;
}

From source file:com.mirth.connect.server.api.servlets.EventServlet.java

@Override
public ServerEvent getEvent(Integer eventId) {
    try {//from  www.  j a v  a  2  s  .co m
        EventFilter filter = new EventFilter();
        filter.setId(eventId);
        List<ServerEvent> events = eventController.getEvents(filter, 0, 1);
        if (CollectionUtils.isEmpty(events)) {
            throw new MirthApiException(Status.NOT_FOUND);
        }
        return events.iterator().next();
    } catch (ControllerException e) {
        throw new MirthApiException(e);
    }
}

From source file:com.haulmont.cuba.core.app.ConstraintLocalizationServiceBean.java

@Nullable
@Override//from w  ww.  j  a  va2s.  co  m
public LocalizedConstraintMessage findLocalizedConstraintMessage(String entityName,
        ConstraintOperationType operationType) {
    Preconditions.checkNotNullArgument(entityName);
    Preconditions.checkNotNullArgument(operationType);

    LoadContext<LocalizedConstraintMessage> loadContext = new LoadContext<>(LocalizedConstraintMessage.class);
    loadContext
            .setQueryString("select e from sec$LocalizedConstraintMessage e "
                    + "where e.entityName = :name and e.operationType = :type")
            .setParameter("name", entityName).setParameter("type", operationType);

    List<LocalizedConstraintMessage> localizations = dataManager.loadList(loadContext);

    if (CollectionUtils.isEmpty(localizations)) {
        return null;
    } else if (localizations.size() == 1) {
        return localizations.get(0);
    } else {
        throw new IllegalStateException(
                "Several entities with the same 'entity name/operation type' combination");
    }
}

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

public List<Serializable> bindAsyncLoopList(AsyncLoopStatement asyncLoopStatement, Context flowContext,
        String nodeName) {//www  .j  a  va 2s .  com
    Validate.notNull(asyncLoopStatement, "async loop statement cannot be null");
    Validate.notNull(flowContext, "flow context cannot be null");
    Validate.notNull(nodeName, "node name cannot be null");

    List<Serializable> evalResult;
    try {
        evalResult = (List<Serializable>) scriptEvaluator.evalExpr(asyncLoopStatement.getExpression(),
                flowContext.getImmutableViewOfVariables());
    } catch (Throwable t) {
        throw new RuntimeException(generateAsyncLoopExpressionMessage(nodeName, t.getMessage()), t);
    }
    if (CollectionUtils.isEmpty(evalResult)) {
        throw new RuntimeException(generateAsyncLoopExpressionMessage(nodeName, "expression is empty"));
    }
    return evalResult;
}