Example usage for java.util Collections EMPTY_SET

Introduction

In this page you can find the example usage for java.util Collections EMPTY_SET.

Prototype

Set EMPTY_SET

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Document

The empty set (immutable).

Usage

From source file:com.acc.controller.ProductsController.java

protected List<String> validateAndSplitCatalog(final String catalog) throws IllegalArgumentException {
    final List<String> catalogInfo = new ArrayList<>();
    if (StringUtils.isNotEmpty(catalog)) {
        catalogInfo//  ww  w.jav a 2s.co  m
                .addAll(Lists.newArrayList(Splitter.on(':').trimResults().omitEmptyStrings().split(catalog)));
        if (catalogInfo.size() == 2) {
            catalogFacade.getProductCatalogVersionForTheCurrentSite(catalogInfo.get(CATALOG_ID_POS),
                    catalogInfo.get(CATALOG_VERSION_POS), Collections.EMPTY_SET);
        } else if (!catalogInfo.isEmpty()) {
            throw new IllegalArgumentException(
                    "You have to provide both catalog and catalogVersion parameters or none of them.");
        }
    }
    return catalogInfo;
}

---

From source file:org.apache.myfaces.custom.picklist.HtmlPicklistRenderer.java

private void encodeSelect(FacesContext facesContext, UIComponent uiComponent, String clientId, boolean disabled,
        int size, List selectItemsToDisplay, Converter converter) throws IOException {
    ResponseWriter writer = facesContext.getResponseWriter();

    writer.startElement(HTML.SELECT_ELEM, uiComponent);
    writer.writeAttribute(HTML.ID_ATTR, clientId, JSFAttr.ID_ATTR);
    writer.writeAttribute(HTML.NAME_ATTR, clientId, null);

    writer.writeAttribute(HTML.MULTIPLE_ATTR, "true", null);

    if (size == 0) {
        //No size given (Listbox) --> size is number of select items
        writer.writeAttribute(HTML.SIZE_ATTR, Integer.toString(selectItemsToDisplay.size()), null);
    } else {/*  ww  w  .j a  v a 2s .co m*/
        writer.writeAttribute(HTML.SIZE_ATTR, Integer.toString(size), null);
    }

    Map<String, List<ClientBehavior>> behaviors = null;
    if (uiComponent instanceof ClientBehaviorHolder) {
        behaviors = ((ClientBehaviorHolder) uiComponent).getClientBehaviors();
    }

    if (behaviors != null && !behaviors.isEmpty()) {
        HtmlRendererUtils.renderBehaviorizedOnchangeEventHandler(facesContext, writer, uiComponent, behaviors);
        HtmlRendererUtils.renderBehaviorizedEventHandlers(facesContext, writer, uiComponent, behaviors);
        HtmlRendererUtils.renderBehaviorizedFieldEventHandlersWithoutOnchange(facesContext, writer, uiComponent,
                behaviors);
        HtmlRendererUtils.renderHTMLAttributes(writer, uiComponent,
                HTML.SELECT_PASSTHROUGH_ATTRIBUTES_WITHOUT_DISABLED_AND_EVENTS);
    } else {
        HtmlRendererUtils.renderHTMLAttributes(writer, uiComponent,
                HTML.SELECT_PASSTHROUGH_ATTRIBUTES_WITHOUT_DISABLED);
    }
    if (disabled) {
        writer.writeAttribute(HTML.DISABLED_ATTR, Boolean.TRUE, null);
    }

    HtmlRendererUtils.renderSelectOptions(facesContext, uiComponent, converter, Collections.EMPTY_SET,
            selectItemsToDisplay);

    // bug #970747: force separate end tag
    writer.writeText("", null);
    writer.endElement(HTML.SELECT_ELEM);
}

---

From source file:io.stallion.dataAccess.LocalMemoryStash.java

@Override
public List<T> listForKey(String keyName, Object value) {
    onPreRead();//from   ww  w .  j  a v  a2  s  .  c  o  m
    Set<T> things = this.keyNameToKeyToValue.get(keyName).getOrDefault(value, Collections.EMPTY_SET);
    return new ArrayList<T>(things);
}

---

From source file:org.tanaguru.webapp.controller.ForgottenOrChangePasswordController.java

/**
 * This method gets data from a property file to fill-in the inscription
 * e-mail//from ww w .j a  v  a 2 s.c o m
 * @param user
 */
private void sendResetEmail(User user, Locale locale) {
    ResourceBundle resourceBundle = ResourceBundle.getBundle(TgolKeyStore.FORGOTTEN_PASSWD_BUNDLE_NAME, locale);
    String emailFrom = resourceBundle.getString(TgolKeyStore.FORGOTTEN_PASSWD_EMAIL_FROM_KEY);
    Set<String> emailToSet = new HashSet();
    emailToSet.add(user.getEmail1());
    String emailSubject = resourceBundle.getString(TgolKeyStore.FORGOTTEN_PASSWD_EMAIL_SUBJECT_KEY);
    String emailContentPattern = resourceBundle.getString(TgolKeyStore.FORGOTTEN_PASSWD_EMAIL_CONTENT_KEY);
    String emailContent = MessageFormat.format(emailContentPattern, user.getEmail1(), computeReturnedUrl(user));
    emailSender.sendEmail(emailFrom, emailToSet, Collections.EMPTY_SET, StringUtils.EMPTY, emailSubject,
            emailContent);
}

---

From source file:org.apache.geode.cache.lucene.internal.filesystem.FileSystemJUnitTest.java

/**
 * Test what happens a file delete is aborted in the middle due to the a cache closed exception.
 * The next member that uses those files should be able to clean up after the partial rename.
 *///  w  w w . j  av a  2  s.c o  m
@Test
public void testPartialDelete() throws Exception {

    final CountOperations countOperations = new CountOperations();
    // Create a couple of mock regions where we count the operations
    // that happen to them. We will then use this to abort the rename
    // in the middle.
    ConcurrentHashMap<String, File> spyFileRegion = mock(ConcurrentHashMap.class,
            new SpyWrapper(countOperations, fileRegion));
    ConcurrentHashMap<ChunkKey, byte[]> spyChunkRegion = mock(ConcurrentHashMap.class,
            new SpyWrapper(countOperations, chunkRegion));

    system = new FileSystem(spyFileRegion, spyChunkRegion, fileSystemStats);

    String name1 = "file1";
    String name2 = "file2";
    File file1 = system.createFile(name1);
    File file2 = system.createFile(name2);

    ByteArrayOutputStream expected = new ByteArrayOutputStream();

    // Make sure the file has a lot of chunks
    for (int i = 0; i < 10; i++) {
        byte[] bytes = writeRandomBytes(file1);
        writeBytes(file2, bytes);
        expected.write(bytes);
    }

    countOperations.reset();

    system.deleteFile(name1);

    assertTrue(2 <= countOperations.count);

    countOperations.after(countOperations.count / 2, new Runnable() {

        @Override
        public void run() {
            throw new CacheClosedException();
        }
    });
    countOperations.reset();

    try {
        system.deleteFile(name2);
        fail("should have seen an error");
    } catch (CacheClosedException expectedException) {
    }

    system = new FileSystem(fileRegion, chunkRegion, fileSystemStats);

    if (system.listFileNames().size() == 0) {
        // File was deleted, but shouldn't have any dangling chunks at this point
        assertEquals(Collections.EMPTY_SET, fileRegion.keySet());
        // TODO - need to purge chunks of deleted files somehow.
        // assertIndexDetailsEquals(Collections.EMPTY_SET, chunkRegion.keySet());
    } else {
        file2 = system.getFile(name2);
        assertContents(expected.toByteArray(), file2);
    }
}

---

From source file:com.gemstone.gemfire.cache.lucene.internal.filesystem.FileSystemJUnitTest.java

/**
 * Test what happens a file delete is aborted in the middle
 * due to the a cache closed exception. The next member
 * that uses those files should be able to clean up after
 * the partial rename./*from   w w w . jav a2 s.  c o m*/
 */
@Test
public void testPartialDelete() throws Exception {

    final CountOperations countOperations = new CountOperations();
    //Create a couple of mock regions where we count the operations
    //that happen to them. We will then use this to abort the rename
    //in the middle.
    ConcurrentHashMap<String, File> spyFileRegion = mock(ConcurrentHashMap.class,
            new SpyWrapper(countOperations, fileRegion));
    ConcurrentHashMap<ChunkKey, byte[]> spyChunkRegion = mock(ConcurrentHashMap.class,
            new SpyWrapper(countOperations, chunkRegion));

    system = new FileSystem(spyFileRegion, spyChunkRegion, fileSystemStats);

    String name1 = "file1";
    String name2 = "file2";
    File file1 = system.createFile(name1);
    File file2 = system.createFile(name2);

    ByteArrayOutputStream expected = new ByteArrayOutputStream();

    //Make sure the file has a lot of chunks
    for (int i = 0; i < 10; i++) {
        byte[] bytes = writeRandomBytes(file1);
        writeBytes(file2, bytes);
        expected.write(bytes);
    }

    countOperations.reset();

    system.deleteFile(name1);

    assertTrue(2 <= countOperations.count);

    countOperations.after(countOperations.count / 2, new Runnable() {

        @Override
        public void run() {
            throw new CacheClosedException();
        }
    });
    countOperations.reset();

    try {
        system.deleteFile(name2);
        fail("should have seen an error");
    } catch (CacheClosedException expectedException) {
    }

    system = new FileSystem(fileRegion, chunkRegion, fileSystemStats);

    if (system.listFileNames().size() == 0) {
        //File was deleted, but shouldn't have any dangling chunks at this point
        assertEquals(Collections.EMPTY_SET, fileRegion.keySet());
        //TODO - need to purge chunks of deleted files somehow.
        //      assertIndexDetailsEquals(Collections.EMPTY_SET, chunkRegion.keySet());
    } else {
        file2 = system.getFile(name2);
        assertContents(expected.toByteArray(), file2);
    }
}

---

From source file:org.jsecurity.realm.AuthorizingRealm.java

@SuppressWarnings({ "unchecked" })
private Collection<Permission> getPermissions(AuthorizationInfo info) {
    Set<Permission> permissions = new HashSet<Permission>();

    if (info != null) {
        if (info.getObjectPermissions() != null) {
            permissions.addAll(info.getObjectPermissions());
        }/*from  w w  w. ja  v  a2s.  c om*/

        if (info.getStringPermissions() != null) {
            for (String strPermission : info.getStringPermissions()) {
                Permission permission = getPermissionResolver().resolvePermission(strPermission);
                permissions.add(permission);
            }
        }
    }

    if (permissions.isEmpty()) {
        return Collections.EMPTY_SET;
    } else {
        return Collections.unmodifiableSet(permissions);
    }
}

---

From source file:org.opens.tgol.controller.ForgottenOrChangePasswordController.java

/**
 * This method gets data from a property file to fill-in the inscription
 * e-mail/*from w  w  w  .  j  a  va 2 s  .  com*/
 * @param user
 */
private void sendResetEmail(User user, Locale locale) {
    ResourceBundle resourceBundle = ResourceBundle.getBundle(BUNDLE_NAME, locale);
    String emailFrom = resourceBundle.getString(EMAIL_FROM_KEY);
    Set<String> emailToSet = new HashSet<String>();
    emailToSet.add(user.getEmail1());
    String emailSubject = resourceBundle.getString(EMAIL_SUBJECT_KEY);
    String emailContentPattern = resourceBundle.getString(EMAIL_CONTENT_KEY);
    String emailContent = MessageFormat.format(emailContentPattern, user.getEmail1(), computeReturnedUrl(user));
    emailSender.sendEmail(emailFrom, emailToSet, Collections.EMPTY_SET, StringUtils.EMPTY, emailSubject,
            emailContent);
}

---

From source file:terrastore.server.impl.JsonHttpServerTest.java

@Test
public void testRemoveByRangeWithComparator() throws Exception {
    UpdateService updateService = createMock(UpdateService.class);
    QueryService queryService = createMock(QueryService.class);
    BackupService backupService = createMock(BackupService.class);
    StatsService statsService = createMock(StatsService.class);

    Range range = new Range(new Key("aaaa"), new Key("ffff"), 0, "lexical-asc", 0);

    updateService.removeByRange("bucket", range, new Predicate(null));
    expectLastCall().andReturn(new Keys(Collections.EMPTY_SET)).once();

    replay(updateService, queryService, backupService, statsService);

    JsonHttpServer server = startServerWith(updateService, queryService, backupService, statsService);

    HttpClient client = new HttpClient();
    DeleteMethod method = new DeleteMethod(
            "http://localhost:8080/bucket/range?startKey=aaaa&endKey=ffff&comparator=lexical-asc");
    client.executeMethod(method);/* w w w .j av  a  2  s.  c  o m*/

    assertEquals(HttpStatus.SC_OK, method.getStatusCode());

    method.releaseConnection();

    stopServer(server);

    verify(updateService, queryService, backupService, statsService);
}

---

From source file:org.obm.domain.dao.UserDaoJdbcImpl.java

private ObmUser createUserFromResultSet(ObmDomain domain, ResultSet rs, ObmUser creator, ObmUser updator,
        Set<Group> groups) throws SQLException {

    try {//from   w  ww .ja va 2s  .  com
        String extId = rs.getString("userobm_ext_id");
        int quota = rs.getInt("userobm_mail_quota");

        return ObmUser.builder().uid(rs.getInt("userobm_id"))
                .login(UserLogin.valueOf(rs.getString("userobm_login")))
                .admin(profileDao.isAdminProfile(rs.getString("userobm_perms"))).domain(domain)
                .identity(UserIdentity.builder().kind(rs.getString("userobm_kind"))
                        .firstName(emptyToNull(rs.getString("userobm_firstname")))
                        .lastName(emptyToNull(rs.getString("userobm_lastname")))
                        .commonName(emptyToNull(rs.getString("userobm_commonname"))).build())
                .publicFreeBusy(computePublicFreeBusy(rs))
                .extId(extId != null ? UserExtId.builder().extId(extId).build() : null)
                .entityId(EntityId.valueOf(rs.getInt("userentity_entity_id")))
                .password(Strings.emptyToNull(rs.getString("userobm_password")))
                .profileName(ProfileName.builder().name(rs.getString("userobm_perms")).build())
                .work(UserWork.builder().title(emptyToNull(rs.getString("userobm_title")))
                        .company(rs.getString("userobm_company")).service(rs.getString("userobm_service"))
                        .direction(rs.getString("userobm_direction")).build())
                .description(rs.getString("userobm_description"))
                .address(UserAddress.builder().addressPart(rs.getString("userobm_address1"))
                        .addressPart(rs.getString("userobm_address2"))
                        .addressPart(rs.getString("userobm_address3")).town(rs.getString("userobm_town"))
                        .zipCode(rs.getString("userobm_zipcode"))
                        .expressPostal(rs.getString("userobm_expresspostal"))
                        .countryCode(rs.getString("userobm_country_iso3166")).build())
                .phones(UserPhones.builder().addPhone(emptyToNull(rs.getString("userobm_phone")))
                        .addPhone(emptyToNull(rs.getString("userobm_phone2")))
                        .mobile(emptyToNull(rs.getString("userobm_mobile")))
                        .addFax(emptyToNull(rs.getString("userobm_fax")))
                        .addFax(emptyToNull(rs.getString("userobm_fax2"))).build())
                .emails(UserEmails.builder().quota(quotaToNullable(quota)).server(hostFromCursor(rs))
                        .addresses(deserializeEmails(rs.getString("userobm_email"))).domain(domain).build())
                .archived(rs.getBoolean("userobm_archive")).hidden(rs.getInt("userobm_hidden") == HIDDEN_TRUE)
                .timeCreate(JDBCUtils.getDate(rs, "userobm_timecreate"))
                .timeUpdate(JDBCUtils.getDate(rs, "userobm_timeupdate"))
                .uidNumber(JDBCUtils.getInteger(rs, "userobm_uid"))
                .gidNumber(JDBCUtils.getInteger(rs, "userobm_gid")).createdBy(creator).updatedBy(updator)
                .groups(Objects.firstNonNull(groups, Collections.EMPTY_SET)).build();
    } catch (DaoException e) {
        throw new SQLException(e);
    }

}

---

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