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:badminton.common.Util.CollectionUtil.java

/**
 * ??//from  w  ww.  j a  v  a2 s.  c o m
 *
 * @param collection
 * @return true:?,false:??
 */
public static boolean isEmpty(final Collection<?> collection) {
    return CollectionUtils.isEmpty(collection);
}

From source file:cop.raml.utils.javadoc.JavaDocUtils.java

public static String getText(List<String> lines) {
    if (CollectionUtils.isEmpty(lines))
        return null;

    StringBuilder buf = new StringBuilder();
    int emptyLines = 0;

    for (String line : lines) {
        if (StringUtils.isBlank(line)) {
            if (buf.length() > 0)
                emptyLines++;//ww  w .jav  a2 s .  c  om
        } else if (JavaDocTag.startsWith(line))
            break;
        else
            buf.append(StringUtils.repeat("\n", emptyLines + (buf.length() > 0 ? 1 : 0))).append(line);
    }

    return clearMacros(buf.toString());
}

From source file:com.chadekin.jadys.commons.expression.SqlExpressionBuilder.java

public static boolean isBlankValue(Object value) {
    boolean isBlank = value == null || StringUtils.isBlank(value.toString());
    if (!isBlank) {
        boolean isEmptyCollection = value instanceof Collection && CollectionUtils.isEmpty((Collection) value);
        boolean isEmptyArray = value.getClass().isArray() && Array.getLength(value) == 0;
        isBlank = isEmptyCollection || isEmptyArray;
    }//from w  ww .j a v  a2  s.c om
    return isBlank;
}

From source file:com.adguard.commons.collections.Lists.java

/**
 * Safe method to remove an element from collection.
 * If either collection is empty or element is null - returns false.
 *
 * @param collection Collection/* w  w w  .  j a v a  2 s .c  o m*/
 * @param element    Element
 * @param <T>        Any type
 * @return true if element has been removed
 */
public static <T> boolean remove(Collection<T> collection, T element) {

    if (element == null) {
        return false;
    }
    //noinspection SimplifiableIfStatement
    if (CollectionUtils.isEmpty(collection)) {
        return false;
    }

    return collection.remove(element);
}

From source file:co.runrightfast.core.utils.JsonUtils.java

static javax.json.JsonArray toJsonArray(final List<String> stringList) {
    if (CollectionUtils.isEmpty(stringList)) {
        return EMPTY_ARRAY;
    }/*from   ww w . ja  va 2  s  .c o m*/

    final JsonArrayBuilder json = Json.createArrayBuilder();
    stringList.forEach(json::add);
    return json.build();
}

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

public static boolean isUniqueHostname(Offer offer, Collection<NodeTask> tasks) {
    Preconditions.checkArgument(offer != null);
    String offerHostname = offer.getHostname();

    if (CollectionUtils.isEmpty(tasks)) {
        return true;
    }// w ww  .  j a v  a2s.co  m

    boolean uniqueHostname = tasks.stream().filter(task -> offerHostname.equalsIgnoreCase(task.getHostname()))
            .count() == 0;
    LOGGER.info("Offer's hostname {} is unique: {}", offerHostname, uniqueHostname);
    return uniqueHostname;
}

From source file:com.adguard.commons.collections.Lists.java

/**
 * Safe method to remove all specified elements
 * from the collection.//from  w w w. ja v a 2s  . c  om
 *
 * @param collection Collection
 * @param elements   Elements to remove
 * @param <T>        Any type
 */
public static <T> void removeAll(Collection<T> collection, Collection<T> elements) {

    if (CollectionUtils.isEmpty(collection) || CollectionUtils.isEmpty(elements)) {
        return;
    }

    for (T element : elements) {
        collection.remove(element);
    }
}

From source file:com.thoughtworks.go.apiv1.secretconfigs.representers.SecretConfigRepresenter.java

public static void toJSON(OutputWriter jsonWriter, SecretConfig secretConfig) {
    if (secretConfig == null)
        return;// w w  w  . ja va2 s .c  o m
    jsonWriter
            .addLinks(
                    linksWriter -> linksWriter.addLink("self", Routes.SecretConfigsAPI.id(secretConfig.getId()))
                            .addAbsoluteLink("doc", Routes.SecretConfigsAPI.DOC)
                            .addLink("find", Routes.SecretConfigsAPI.find()))
            .add("id", secretConfig.getId()).add("plugin_id", secretConfig.getPluginId())
            .addIfNotNull("description", secretConfig.getDescription());

    if (secretConfig.hasErrors()) {
        Map<String, String> fieldMapping = Collections.singletonMap("pluginId", "plugin_id");
        jsonWriter.addChild("errors",
                errorWriter -> new ErrorGetter(fieldMapping).toJSON(errorWriter, secretConfig));
    }

    jsonWriter.addChildList("properties", listWriter -> {
        ConfigurationPropertyRepresenter.toJSON(listWriter, secretConfig.getConfiguration());
    });

    if (!CollectionUtils.isEmpty(secretConfig.getRules())) {
        jsonWriter.addChildList("rules",
                rulesWriter -> RulesRepresenter.toJSON(rulesWriter, secretConfig.getRules()));
    }
}

From source file:nc.noumea.mairie.appock.core.utility.MessageErreurUtilTest.java

@Test
public void construitListeMessageErreurViolationContrainte() {
    Assert.assertTrue(
            CollectionUtils.isEmpty(MessageErreurUtil.construitListeMessageErreurViolationContrainte(null)));
}

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

@Override
public List<ChannelGroup> getChannelGroups(Set<String> channelGroupIds) {
    if (CollectionUtils.isEmpty(channelGroupIds)) {
        return channelController.getChannelGroups(null);
    } else {/*from  w  w  w .  j ava  2 s  .c om*/
        return channelController.getChannelGroups(channelGroupIds);
    }
}