Example usage for java.util Collections EMPTY_LIST

Introduction

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

Prototype

List EMPTY_LIST

To view the source code for java.util Collections EMPTY_LIST.

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Document

The empty list (immutable).

Usage

From source file:com.streamsets.pipeline.stage.processor.xmlflattener.TestXMLFlatteningProcessor.java

@Test
public void testSingleRecordNoAttrsNoNSWithWhiteSpace() throws Exception {
    String xml = getXMLWithWhitespace("");
    Record expected = RecordCreator.create();
    expected.set(Field.create(createExpectedRecord("", "", "", ".", "#", "", false, false)));
    doTest(xml, "contact", ImmutableList.of(expected), Collections.EMPTY_LIST, OnRecordError.DISCARD, true,
            true, false, false);/*from  w  w w.  java  2s .  co m*/
}

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From source file:ch.admin.suis.msghandler.signer.Signer.java

/**
 * Signs the PDF files in one single signing outbox.
 *
 * @param signingOutbox The signing outbox where the PDF files to sign a located.
 * @return A list of names of those files which had to be signed. Only the name of the files, which could be
 * successfully signed are returned. The list may be empty.
 * @throws SignerException        Signer went head in the wall.
 * @throws ConfigurationException Configuration is doomed !
 *//*from w  w  w  .j  a  v a 2s .  com*/
private List<File> sign(SigningOutbox signingOutbox) throws SignerException, ConfigurationException {

    final List<File> pdfsToSign = signingOutbox.getAllPDFsToSign();

    LOG.debug("Number of PDF files to sign for " + signingOutbox.getName() + " = " + pdfsToSign.size());

    if (pdfsToSign.isEmpty()) {
        return Collections.EMPTY_LIST;
    }

    /**
    * Do a refresh. Required for the SigningOutboxSedexCfg.
     */

    signingOutbox.refresh();

    final List<File> results = new ArrayList<>(pdfsToSign.size());
    final BatchRunnerBuilder builder = makeBatchRunnerBuilder(signingOutbox);

    // we use the BatchSigner to signed a batch of a single file. By this means we prevent, that a file, that cannot
    // be signed, prevents to following files in the list to be signed (cf. MSGHANDLER-64)
    for (File pdfToSign : pdfsToSign) {
        try {
            BatchRunner batchRunner = builder.buildMinimal();
            File signedPdf = determineDestinationFile(signedDir, pdfToSign);
            batchRunner.addFile(pdfToSign, signedPdf);
            batchRunner.go(); // a batch of one file
            results.add(pdfToSign);
            LOG.info(String.format("Signed file %s, the result is %s", pdfToSign.getName(),
                    signedPdf.getAbsolutePath()));
        } catch (BatchException ex) {
            moveToCorruptedAndLog(pdfToSign, ex);
        }
    }

    LOG.info("Number of PDF file successfully signed in " + signingOutbox.getName() + ": " + results.size());

    return results;
}

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From source file:de.javakaffee.kryoserializers.KryoTest.java

@BeforeTest
protected void beforeTest() {
    _kryo = new KryoReflectionFactorySupport() {

        @Override//from   ww  w .ja v  a 2  s  . c  o  m
        @SuppressWarnings({ "rawtypes", "unchecked" })
        public Serializer<?> getDefaultSerializer(final Class type) {
            if (EnumSet.class.isAssignableFrom(type)) {
                return new EnumSetSerializer();
            }
            if (EnumMap.class.isAssignableFrom(type)) {
                return new EnumMapSerializer();
            }
            if (Collection.class.isAssignableFrom(type)) {
                return new CopyForIterateCollectionSerializer();
            }
            if (Map.class.isAssignableFrom(type)) {
                return new CopyForIterateMapSerializer();
            }
            if (Date.class.isAssignableFrom(type)) {
                return new DateSerializer(type);
            }
            return super.getDefaultSerializer(type);
        }
    };
    _kryo.setRegistrationRequired(false);
    _kryo.register(Arrays.asList("").getClass(), new ArraysAsListSerializer());
    _kryo.register(Collections.EMPTY_LIST.getClass(), new CollectionsEmptyListSerializer());
    _kryo.register(Collections.EMPTY_MAP.getClass(), new CollectionsEmptyMapSerializer());
    _kryo.register(Collections.EMPTY_SET.getClass(), new CollectionsEmptySetSerializer());
    _kryo.register(Collections.singletonList("").getClass(), new CollectionsSingletonListSerializer());
    _kryo.register(Collections.singleton("").getClass(), new CollectionsSingletonSetSerializer());
    _kryo.register(Collections.singletonMap("", "").getClass(), new CollectionsSingletonMapSerializer());
    _kryo.register(BigDecimal.class, new BigDecimalSerializer());
    _kryo.register(BigInteger.class, new BigIntegerSerializer());
    _kryo.register(Pattern.class, new RegexSerializer());
    _kryo.register(BitSet.class, new BitSetSerializer());
    _kryo.register(URI.class, new URISerializer());
    _kryo.register(UUID.class, new UUIDSerializer());
    _kryo.register(GregorianCalendar.class, new GregorianCalendarSerializer());
    _kryo.register(InvocationHandler.class, new JdkProxySerializer());
    UnmodifiableCollectionsSerializer.registerSerializers(_kryo);
    SynchronizedCollectionsSerializer.registerSerializers(_kryo);
}

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From source file:architecture.ee.web.community.streams.DefaultPhotoStreamsManager.java

protected List<Photo> toPhotoList(List<String> ids) {
    if (ids.size() == 0)
        return Collections.EMPTY_LIST;
    List<Photo> photos = new ArrayList<Photo>(ids.size());
    for (String id : ids) {
        Photo p;//from  w w  w .  j ava2 s .  com
        try {
            p = getPhotoById(id);
            photos.add(p);
        } catch (NotFoundException e) {
        }
    }
    return photos;
}

---

From source file:TreeNode.java

/**
 * Return an Iterator of all children of this node.  If there are no
 * children, an empty Iterator is returned.
 *///w  w w .  ja v  a 2  s . co  m
public Iterator findChildren() {

    if (children == null)
        return (Collections.EMPTY_LIST.iterator());
    else
        return (children.iterator());

}

---

From source file:de.bsd.hawkularFxReports.Generator.java

private List<HawkResource> getResourcesForType(String tenantId, ResourceType type) {

    Request request = getRequestForUrl("hawkular/inventory/resourceTypes/" + type.getId() + "/resources", null);

    Response response = null;/*from  ww w .  jav a  2  s. c o  m*/
    try {
        response = httpClient.newCall(request).execute();
    } catch (IOException e) {
        e.printStackTrace(); // TODO: Customise this generated block
        main.msgField.setText(e.getMessage());
        return Collections.EMPTY_LIST;
    }

    System.out.println(response.toString());
    String payload = null;
    try {
        payload = response.body().string();
        System.out.println(payload);
    } catch (IOException e) {
        e.printStackTrace(); // TODO: Customise this generated block
        return null;
    }

    List<HawkResource> resources = mapfromString(payload, new TypeReference<List<HawkResource>>() {
    });

    return resources;

}

---

From source file:net.ontopia.topicmaps.nav2.utils.FrameworkUtils.java

/**
 * INTERNAL: Evaluates a string of space-separated variable names as a list
 * of collections, and returns it./*w ww.  jav a  2  s.co m*/
 */
public static List evaluateParameterList(PageContext pageContext, String params) throws JspTagException {
    if (params != null && !params.equals(""))
        return getMultipleValuesAsList(params, pageContext);
    else
        return Collections.EMPTY_LIST;
}

---

From source file:com.oembedler.moon.graphql.engine.dfs.MethodParameters.java

public List<MethodParameterInfo> getParameters() {
    return methodParameterInfos == null ? Collections.EMPTY_LIST : Lists.newArrayList(methodParameterInfos);
}

---

From source file:de.hybris.platform.test.InvalidationSetTest.java

@Test
public void testHJMPInvalidation() {
    final TestInvalidationTarget target = new TestInvalidationTarget();

    final TestInvalidationProcessor processor = new TestInvalidationProcessor(//
            target, //
            new DummyHJMPInvalidationListener(), new DummyFlexibleSearchInvalidationListener()//
    );/*from  ww  w .j a  v a  2  s  .c o m*/
    final InvalidationSet set = new InvalidationSet(processor) {
        @Override
        protected InvalidationTarget getRealInvalidationTarget() {
            return target;
        }
    };

    final Object[] entityKey = asKey(Cache.CACHEKEY_HJMP, Cache.CACHEKEY_ENTITY, "1", PK.createFixedPK(1, 1));
    final Object[] queryKey = asKey(Cache.CACHEKEY_FLEXSEARCH, "1",
            new Object() /* some object - doesn't matter */);
    final Object[] otherQueryKey = asKey(Cache.CACHEKEY_FLEXSEARCH, "5",
            new Object() /* some object - doesn't matter */);

    set.delayInvalidation(entityKey, 3, AbstractCacheUnit.INVALIDATIONTYPE_MODIFIED);

    assertEquals("invalidations have not been delayed", Collections.EMPTY_LIST, target.recordeInvalidations);
    assertInvalidated(set, entityKey);
    assertInvalidated(set, queryKey);
    assertNotInvalidated(set, otherQueryKey);

    final Object[] entityKey2 = asKey(Cache.CACHEKEY_HJMP, Cache.CACHEKEY_ENTITY, "1", PK.createFixedPK(1, 2));
    final Object[] queryKey2 = asKey(Cache.CACHEKEY_FLEXSEARCH, "1",
            new Object() /* some object - doesn't matter */);
    final Object[] otherQueryKey2 = asKey(Cache.CACHEKEY_FLEXSEARCH, "123", new Object() /*
                                                                                          * some object - doesn't
                                                                                          * matter
                                                                                          */);

    set.delayInvalidation(entityKey2, 3, AbstractCacheUnit.INVALIDATIONTYPE_REMOVED);

    assertEquals("invalidations have not been delayed", Collections.EMPTY_LIST, target.recordeInvalidations);
    assertInvalidated(set, entityKey);
    assertInvalidated(set, queryKey);
    assertNotInvalidated(set, otherQueryKey);
    assertInvalidated(set, entityKey2);
    assertInvalidated(set, queryKey2);
    assertNotInvalidated(set, otherQueryKey2);

    set.executeDelayedInvalidationsGlobally();

    final List<Invalidation> expected = Arrays.asList(//
            InvalidationSet.createInvalidation(entityKey, -1, AbstractCacheUnit.INVALIDATIONTYPE_MODIFIED), //
            InvalidationSet.createInvalidation(Arrays.copyOf(queryKey, queryKey.length - 1), -1,
                    AbstractCacheUnit.INVALIDATIONTYPE_MODIFIED), //
            InvalidationSet.createInvalidation(entityKey2, -1, AbstractCacheUnit.INVALIDATIONTYPE_REMOVED), //
            InvalidationSet.createInvalidation(Arrays.copyOf(queryKey2, queryKey.length - 1), -1,
                    AbstractCacheUnit.INVALIDATIONTYPE_REMOVED) //
    );

    assertEquals(expected, target.recordeInvalidations);
}

---

From source file:com.redhat.rhn.frontend.action.help.DocSearchSetupAction.java

private List performSearch(Long sessionId, String searchString, String mode, HttpServletRequest request)
        throws XmlRpcFault, MalformedURLException {

    log.debug("Performing doc search");

    // call search server
    XmlRpcClient client = new XmlRpcClient(ConfigDefaults.get().getSearchServerUrl(), true);
    List args = new ArrayList();
    args.add(sessionId);/*ww w  .j a va 2 s.c  om*/
    args.add("docs");
    args.add(preprocessSearchString(searchString, mode));
    // get lang we are searching in
    Locale l = Context.getCurrentContext().getLocale();
    args.add(l.toString());
    Boolean searchFreeForm = false;
    if (OPT_FREE_FORM.equals(mode)) {
        // adding a boolean of true to signify we want the results to be
        // constrained to closer matches, this will force the Lucene Queries
        // to use a "MUST" instead of the default "SHOULD".  It will not
        // allow fuzzy matches as in spelling errors, but it will allow
        // free form searches to do more advanced options
        //args.add(true);
        searchFreeForm = true;
    }
    args.add(searchFreeForm);
    List results = Collections.emptyList();
    try {
        results = (List) client.invoke("index.search", args);
    } catch (XmlRpcFault e) {
        if (e.getErrorCode() == 200) {
            //This is most likely a language error
            //so lets try the search the default language
            //removing the 'lang' from the args
            args.remove(args.size() - 2);
            results = (List) client.invoke("index.search", args);

            List<ValidatorWarning> warnings = new LinkedList<ValidatorWarning>();
            warnings.add(new ValidatorWarning("packages.search.index_files_missing_for_docs"));

            getStrutsDelegate().saveMessages(request, Collections.EMPTY_LIST, warnings);

        } else {
            throw e;
        }
    }

    if (log.isDebugEnabled()) {
        log.debug("results = [" + results + "]");
    }

    if (results.isEmpty()) {
        return Collections.emptyList();
    }

    List<HelpDocumentOverview> docs = new ArrayList<HelpDocumentOverview>();
    for (int x = 0; x < results.size(); x++) {
        HelpDocumentOverview doc = new HelpDocumentOverview();
        Map item = (Map) results.get(x);
        log.debug("SearchServer sent us item [" + item.get("rank") + "], score = " + item.get("score")
                + ", summary = " + item.get("summary") + ", title = " + item.get("title") + ", url = "
                + item.get("url"));
        doc.setUrl((String) item.get("url"));
        doc.setTitle((String) item.get("title"));
        doc.setSummary((String) item.get("summary"));
        docs.add(doc);
    }
    return docs;
}

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