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:fi.helsinki.opintoni.config.audit.AuditEventConverter.java

/**
 * Convert a list of PersistentAuditEvent to a list of AuditEvent
 *
 * @param persistentAuditEvents the list to convert
 * @return the converted list./*from   www  .  j  a  v  a2  s . co m*/
 */
public List<AuditEvent> convertToAuditEvent(Iterable<PersistentAuditEvent> persistentAuditEvents) {
    if (persistentAuditEvents == null) {
        return Collections.emptyList();
    }

    List<AuditEvent> auditEvents = new ArrayList<>();

    for (PersistentAuditEvent persistentAuditEvent : persistentAuditEvents) {
        AuditEvent auditEvent = new AuditEvent(persistentAuditEvent.getAuditEventDate().toDate(),
                persistentAuditEvent.getPrincipal(), persistentAuditEvent.getAuditEventType(),
                convertDataToObjects(persistentAuditEvent.getData()));
        auditEvents.add(auditEvent);
    }

    return auditEvents;
}

From source file:no.dusken.aranea.service.RoleServiceImpl.java

public List<Role> getRoles() {
    List<Role> list = Collections.emptyList();
    try {// w w w  .  j av  a2s  . c om
        list = genericDao.getByNamedQuery("role_roles", null);
    } catch (DataAccessException dae) {
        log.info("Unable to get Roles", dae);
    }
    return list;
}

From source file:com.devicehive.dao.riak.model.RiakDeviceEquipment.java

public static List<DeviceEquipmentVO> convertToVo(List<RiakDeviceEquipment> equipment) {
    if (equipment == null) {
        return Collections.emptyList();
    }/*from ww  w .  j a v  a2  s. com*/
    return equipment.stream().map(RiakDeviceEquipment::convertToVo).collect(Collectors.toList());
}

From source file:org.italiangrid.storm.webdav.authz.vomap.VOMapAuthDetailsSource.java

@Override
public Collection<GrantedAuthority> getVOMSGrantedAuthorities(HttpServletRequest request) {

    X500Principal principal = getPrincipalFromRequest(request);

    if (principal == null) {
        return Collections.emptyList();
    }/*from ww w  .  j av a 2s .c o  m*/

    List<GrantedAuthority> authorities = new ArrayList<GrantedAuthority>();

    for (String voName : mapService.getPrincipalVOs(principal)) {
        if (logger.isDebugEnabled()) {
            logger.debug("Adding VO authority: {}", voName);
        }
        authorities.add(new VOMSVOMapAuthority(voName));
    }

    return authorities;
}

From source file:cc.kave.commons.pointsto.evaluation.OneMissingQueryBuilder.java

@Override
public List<Query> createQueries(Usage in) {
    List<CallSite> receiverCallSites = new ArrayList<>(in.getReceiverCallsites());
    if (receiverCallSites.isEmpty()) {
        return Collections.emptyList();
    }/*w  w  w . j  a  v a  2s .  co  m*/

    int numQueries = Math.min(maxNumQueries, receiverCallSites.size());
    Set<Set<CallSite>> queriesCallSites = new HashSet<>(numQueries);
    int iters = 0;
    while (queriesCallSites.size() < numQueries && iters < 100) {
        int missingIndex = rndGenerator.nextInt(receiverCallSites.size());
        CallSite missingCallSite = receiverCallSites.get(missingIndex);
        Set<CallSite> newCallSites = new HashSet<>(in.getAllCallsites());
        newCallSites.remove(missingCallSite);
        queriesCallSites.add(newCallSites);

        ++iters;
    }

    List<Query> queries = new ArrayList<>(maxNumQueries);
    for (Set<CallSite> callSites : queriesCallSites) {
        Query query = Query.createAsCopyFrom(in);
        query.setAllCallsites(callSites);
        queries.add(query);
    }
    return queries;
}

From source file:net.shopxx.dao.impl.ArticleCategoryDaoImpl.java

public List<ArticleCategory> findParents(ArticleCategory articleCategory, boolean recursive, Integer count) {
    if (articleCategory == null || articleCategory.getParent() == null) {
        return Collections.emptyList();
    }//  ww  w . j a  v  a  2s. c  om
    TypedQuery<ArticleCategory> query;
    if (recursive) {
        String jpql = "select articleCategory from ArticleCategory articleCategory where articleCategory.id in (:ids) order by articleCategory.grade asc";
        query = entityManager.createQuery(jpql, ArticleCategory.class).setParameter("ids",
                Arrays.asList(articleCategory.getParentIds()));
    } else {
        String jpql = "select articleCategory from ArticleCategory articleCategory where articleCategory = :articleCategory";
        query = entityManager.createQuery(jpql, ArticleCategory.class).setParameter("articleCategory",
                articleCategory.getParent());
    }
    if (count != null) {
        query.setMaxResults(count);
    }
    return query.getResultList();
}

From source file:net.shopxx.dao.impl.ProductCategoryDaoImpl.java

public List<ProductCategory> findParents(ProductCategory productCategory, boolean recursive, Integer count) {
    if (productCategory == null || productCategory.getParent() == null) {
        return Collections.emptyList();
    }/*w ww  .j a  v  a 2 s .  co  m*/
    TypedQuery<ProductCategory> query;
    if (recursive) {
        String jpql = "select productCategory from ProductCategory productCategory where productCategory.id in (:ids) order by productCategory.grade asc";
        query = entityManager.createQuery(jpql, ProductCategory.class).setParameter("ids",
                Arrays.asList(productCategory.getParentIds()));
    } else {
        String jpql = "select productCategory from ProductCategory productCategory where productCategory = :productCategory";
        query = entityManager.createQuery(jpql, ProductCategory.class).setParameter("productCategory",
                productCategory.getParent());
    }
    if (count != null) {
        query.setMaxResults(count);
    }
    return query.getResultList();
}

From source file:jp.ryoyamamoto.poiutils.Sheets.java

/**
 * Gets the hyperlinks on the sheet./*from  w  ww.ja  va 2s . c o m*/
 * 
 * @param sheet
 *            the sheet.
 * @return the hyperlinks on the sheet.
 */
@SuppressWarnings("unchecked")
public static List<Hyperlink> getHyperlinks(Sheet sheet) {
    try {
        return (List<Hyperlink>) FieldUtils.readDeclaredField(sheet, "hyperlinks", true);
    } catch (IllegalAccessException e) {
        e.printStackTrace();
    }
    return Collections.emptyList();
}

From source file:com.frank.search.solr.core.convert.SolrConverterBase.java

@Override
public Collection<SolrInputDocument> write(Iterable<?> source) {
    if (source == null) {
        return Collections.emptyList();
    }//from www .  j  a v a2 s .  co  m

    List<SolrInputDocument> resultList = new ArrayList<SolrInputDocument>();
    for (Object bean : source) {
        if (bean instanceof SolrInputDocument) {
            resultList.add((SolrInputDocument) bean);
        } else {
            resultList.add(createAndWrite(bean));
        }
    }

    return resultList;
}

From source file:uk.co.blackpepper.support.spring.jdbc.jooq.SpringJdbcJooqUtilsTest.java

@Test
public void newPreparedStatementCreatorReturnsPreparedStatementCreator() {
    Query query = mock(Query.class);
    when(query.getParams()).thenReturn(Maps.<String, Param<?>>newHashMap());
    when(query.getBindValues()).thenReturn(Collections.emptyList());
    when(query.getSQL()).thenReturn("x");

    PreparedStatementCreator actual = SpringJdbcJooqUtils.newPreparedStatementCreator(query);

    // The concrete class implements this interface, so we can make a meaningful assertion
    String sql = ((SqlProvider) actual).getSql();
    assertThat(sql, is("x"));
}