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

List of usage examples for org.apache.commons.collections4 CollectionUtils isEmpty

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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:org.phenotips.vocabulary.internal.solr.AbstractSolrVocabularyTerm.java

/**
 * Retrieves the first value corresponding to the target key. This may be the only value set for a simple field, or
 * the first in a collection of values for a multi-valued field.
 *
 * @param key the name of the field to retrieve
 * @return the first value, or {@code null} if there's no value set for the target key
 *///from w  ww. ja va  2 s.com
protected Object getFirstValue(String key) {
    Collection<Object> values = getValues(key);
    if (CollectionUtils.isEmpty(values)) {
        return null;
    }
    return IterableUtils.get(values, 0);
}

From source file:org.sakaiproject.poll.logic.impl.PollOrderOptionBackFillJob.java

/**
 * This is the method that is fired when the job is 'triggered'.
 *
 * @param jobExecutionContext - the context of the job execution
 * @throws JobExecutionException//from   www  .  j  a  va2  s.co m
 */
@Override
public void execute(JobExecutionContext jobExecutionContext) throws JobExecutionException {
    log.info("Attempting to back-fill all existing Poll option orders...");
    int modifiedCount = 0;

    // Iterate over sites in the system, ordered by creation date...
    List<Site> sites = siteService.getSites(SelectionType.ANY, null, null, null, SortType.CREATED_ON_DESC,
            null);
    if (!CollectionUtils.isEmpty(sites)) {
        for (Site site : sites) {
            String siteID = site.getId();
            List<Poll> pollsForSite = pollService.findAllPolls(siteID);
            if (!CollectionUtils.isEmpty(pollsForSite)) {
                // Iterate over the polls for the site...
                for (Poll poll : pollsForSite) {
                    try {
                        // Iterate over Options in the poll...
                        securityService.pushAdvisor(YES_MAN);
                        List<Option> pollOptions = pollService.getOptionsForPoll(poll);
                        if (!CollectionUtils.isEmpty(pollOptions)) {
                            // Check if any options have a null order
                            boolean hasNullOptionOrder = false;
                            for (Option option : pollOptions) {
                                if (option.getOptionOrder() == null) {
                                    hasNullOptionOrder = true;
                                    break;
                                }
                            }

                            // If any of the option's order is null, we need to back-fill them
                            if (hasNullOptionOrder) {
                                log.info("Poll ID {} has options with null order, processing...", poll.getId());

                                // Order the list by ID
                                pollOptions.sort(Comparator.comparingLong(Option::getOptionId));

                                // Iterate over the list
                                for (int i = 0; i < pollOptions.size(); i++) {
                                    // Add order based on ID
                                    Option option = pollOptions.get(i);
                                    option.setOptionOrder(i);
                                    pollService.saveOption(option);
                                    modifiedCount++;
                                    log.info("Option {} ---> new order == {}", option.getId(), i);
                                }
                            }
                        }
                    } catch (Exception ex) {
                        log.error("Unexcepted exception", ex);
                    } finally {
                        securityService.popAdvisor(YES_MAN);
                    }
                }
            }
        }
    }

    log.info("Processing finished, modified {} poll options", modifiedCount);
}

From source file:org.sigmah.server.dao.impl.FileHibernateDAO.java

/**
 * {@inheritDoc}/*ww w. j av a  2s  . c  o m*/
 */
@Override
public List<FileVersion> findVersions(final Collection<Integer> filesIds, LoadingScope loadingScope) {

    if (CollectionUtils.isEmpty(filesIds)) {
        throw new IllegalArgumentException("Invalid files ids collection.");
    }

    if (loadingScope == null) {
        loadingScope = LoadingScope.LAST_VERSION;
    }

    // NOTE : StringBuilder has been removed here since all the strings used here are constants.
    final String request;

    switch (loadingScope) {
    case ALL_VERSIONS:
        // Retrieves all versions of each file.
        request = "SELECT " + "  fv " + "FROM " + "  File f INNER JOIN f.versions fv " + "WHERE "
                + "  f.id IN (:filesIds)";
        break;

    case LAST_VERSION:
        // Retrieves only the last version of each file.
        request = "SELECT " + "  fv " + "FROM " + "  File f INNER JOIN f.versions fv " + "WHERE "
                + "  f.id IN (:filesIds) " + "  AND fv.versionNumber IN ("
                + "    SELECT max(fv2.versionNumber) FROM FileVersion fv2 WHERE fv2.parentFile = f" + "  )";
        break;

    case LAST_VERSION_FROM_NOT_DELETED_FILES:
        // Retrieves only the last version of each file if the file has not been deleted.
        request = "SELECT " + "  fv " + "FROM " + "  File f INNER JOIN f.versions fv " + "WHERE "
                + "  f.id IN (:filesIds) " + "  AND f.dateDeleted IS NULL " + "  AND fv.versionNumber IN ("
                + "    SELECT max(fv2.versionNumber) FROM FileVersion fv2 WHERE fv2.parentFile = f" + "  )";
        break;

    default:
        throw new IllegalArgumentException("Invalid file versions loading mode.");
    }

    final TypedQuery<FileVersion> query = em().createQuery(request, FileVersion.class);
    query.setParameter("filesIds", filesIds);

    return query.getResultList();
}

From source file:org.sigmah.server.dao.impl.ValueHibernateDAO.java

/**
 * {@inheritDoc}//from   ww  w . j a v  a  2 s  . c o m
 */
@Override
public List<Value> findValuesForOrgUnits(final Collection<OrgUnit> orgUnits) {

    if (CollectionUtils.isEmpty(orgUnits)) {
        throw new IllegalArgumentException("Invalid OrgUnits collection.");
    }

    final StringBuilder builder = new StringBuilder();
    builder.append("SELECT v ");
    builder.append(" FROM Value v ");
    builder.append(" WHERE v.containerId IN (");
    builder.append("   SELECT ");
    builder.append("     ud.id ");
    builder.append("   FROM ");
    builder.append("     OrgUnit o");
    builder.append("     INNER JOIN o.databases ud ");
    builder.append("   WHERE o IN (:orgUnits)");
    builder.append(" )");
    builder.append(" OR v.containerId IN (:orgUnits)");

    final TypedQuery<Value> query = em().createQuery(builder.toString(), Value.class);
    query.setParameter("orgUnits", orgUnits);

    return query.getResultList();
}

From source file:org.sigmah.server.handler.DeactivateUsersHandler.java

/**
 * {@inheritDoc}//ww  w  .j a  va2s  .  c o m
 */
@Override
public VoidResult execute(final DeactivateUsers cmd, final UserExecutionContext context)
        throws CommandException {

    if (CollectionUtils.isEmpty(cmd.getUsers())) {
        return new VoidResult();
    }

    performDeactivation(cmd.getUsers(), context);

    return new VoidResult();
}

From source file:org.sigmah.server.handler.DeletePrivacyGroupsHandler.java

/**
 * {@inheritDoc}//  w  ww.j av  a2 s .co m
 */
@Override
public DeleteResult<PrivacyGroupDTO> execute(final DeletePrivacyGroups cmd, final UserExecutionContext context)
        throws CommandException {

    final List<Integer> privacyGroupIds = cmd.getPrivacyGroupIds();

    // Result that may contain detected error(s).
    final DeleteResult<PrivacyGroupDTO> result = new DeleteResult<PrivacyGroupDTO>();

    if (CollectionUtils.isEmpty(privacyGroupIds)) {
        // Nothing to delete.
        return result;
    }

    performDelete(privacyGroupIds, context, result);

    return result;
}

From source file:org.sigmah.server.handler.DeleteProfilesHandler.java

/**
 * {@inheritDoc}//from   w  ww .  j ava  2  s.c  om
 */
@Override
public DeleteResult<ProfileDTO> execute(final DeleteProfiles cmd, final UserExecutionContext context)
        throws CommandException {

    // Profiles to delete.
    final List<ProfileDTO> profiles = cmd.getProfiles();

    // Result that may contain detected error(s).
    final DeleteResult<ProfileDTO> result = new DeleteResult<ProfileDTO>();

    if (CollectionUtils.isEmpty(profiles)) {
        return result;
    }

    // Delete the profiles
    performDelete(profiles, result, context);

    return result;
}

From source file:org.sigmah.server.handler.util.Handlers.java

/**
 * <p>/*from w  ww  .  jav a2  s.  c om*/
 * Aggregates the list of profiles of a {@code user}.
 * </p>
 * <p>
 * The {@link User} may have several profiles which link it to its {@link OrgUnit}.<br/>
 * This handler merges also all the profiles in one <em>aggregated profile</em>.
 * </p>
 * 
 * @param user
 *          The user.
 * @param mapper
 *          The mapper service.
 * @return The aggregated profile DTO.
 */
public static ProfileDTO aggregateProfiles(final User user, final Mapper mapper) {

    final ProfileDTO aggretatedProfileDTO = new ProfileDTO();
    aggretatedProfileDTO.setName("AGGREGATED_PROFILE");
    aggretatedProfileDTO.setGlobalPermissions(new HashSet<GlobalPermissionEnum>());
    aggretatedProfileDTO.setPrivacyGroups(new HashMap<PrivacyGroupDTO, PrivacyGroupPermissionEnum>());

    if (user == null || user.getOrgUnitWithProfiles() == null
            || CollectionUtils.isEmpty(user.getOrgUnitWithProfiles().getProfiles())) {
        return aggretatedProfileDTO;
    }

    // For each profile.
    for (final Profile profile : user.getOrgUnitWithProfiles().getProfiles()) {

        // Global permissions.
        if (profile.getGlobalPermissions() != null) {
            for (final GlobalPermission p : profile.getGlobalPermissions()) {

                // Aggregates global permissions among profiles.
                aggretatedProfileDTO.getGlobalPermissions().add(p.getPermission());
            }
        }

        // Privacy groups.
        if (profile.getPrivacyGroupPermissions() != null) {
            for (final PrivacyGroupPermission p : profile.getPrivacyGroupPermissions()) {

                final PrivacyGroupDTO groupDTO = mapper.map(p.getPrivacyGroup(), new PrivacyGroupDTO());

                // Aggregates privacy groups among profiles.
                if (aggretatedProfileDTO.getPrivacyGroups().get(groupDTO) != PrivacyGroupPermissionEnum.WRITE) {
                    aggretatedProfileDTO.getPrivacyGroups().put(groupDTO, p.getPermission());
                }
            }
        }
    }

    return aggretatedProfileDTO;
}

From source file:org.sigmah.server.servlet.util.Servlets.java

/**
 * Returns the given {@code violations} corresponding <em>loggable</em> string.
 * //from w  ww  .  j  av a2 s  . c o m
 * @param violations
 *          The constraint violations collection.
 * @return The given {@code violations} corresponding <em>loggable</em> string.
 */
public static String logConstraints(final Collection<ConstraintViolation<?>> violations) {

    final StringBuilder sb = new StringBuilder();

    if (CollectionUtils.isEmpty(violations)) {
        return sb.toString();
    }

    for (final ConstraintViolation<?> violation : violations) {
        sb.append("Constraint violation[");
        sb.append("Class: ");
        sb.append(violation.getRootBeanClass().getCanonicalName());
        sb.append(" ; ");
        sb.append("Property: ");
        sb.append(violation.getPropertyPath().iterator().next().getName());
        sb.append(" ; ");
        sb.append("Message: ");
        sb.append(violation.getMessage());
        sb.append(" ; ");
        sb.append("Invalid value: ");
        sb.append(String.valueOf(violation.getInvalidValue()));
        sb.append("]\n");
    }

    return sb.toString();
}

From source file:org.tdar.core.bean.resource.InformationResource.java

@XmlTransient
public InformationResourceFileVersion getLatestUploadedVersion() {
    Collection<InformationResourceFileVersion> latestUploadedVersions = getLatestUploadedVersions();
    if (CollectionUtils.isEmpty(latestUploadedVersions)) {
        logger.warn("No latest uploaded version for {}", this);
        return null;
    }/*from  ww w. j ava  2  s.  c om*/
    return getLatestUploadedVersions().iterator().next();
}