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:com.kantenkugel.discordbot.jdocparser.JDoc.java

public static List<Documentation> get(final String name) {
    final String[] split = name.toLowerCase().split("[#.]");
    JDocParser.ClassDocumentation classDoc;
    synchronized (docs) {
        if (!docs.containsKey(split[0]))
            return Collections.emptyList();
        classDoc = docs.get(split[0]);/*from w w  w  .j  a v a 2  s.c o m*/
    }
    for (int i = 1; i < split.length - 1; i++) {
        if (!classDoc.subClasses.containsKey(split[i]))
            return Collections.emptyList();
        classDoc = classDoc.subClasses.get(split[i]);
    }

    String searchObj = split[split.length - 1];
    if (split.length == 1 || classDoc.subClasses.containsKey(searchObj)) {
        if (split.length > 1)
            classDoc = classDoc.subClasses.get(searchObj);
        return Collections.singletonList(classDoc);
    } else if (classDoc.classValues.containsKey(searchObj)) {
        return Collections.singletonList(classDoc.classValues.get(searchObj));
    } else {
        boolean fuzzy = false;
        String fixedSearchObj = searchObj;
        if (fixedSearchObj.charAt(fixedSearchObj.length() - 1) != ')') {
            fixedSearchObj += "()";
            fuzzy = true;
        }
        String[] methodParts = fixedSearchObj.split("[()]");
        String methodName = methodParts[0];
        if (classDoc.methodDocs.containsKey(methodName.toLowerCase())) {
            return getMethodDocs(classDoc, methodName, fixedSearchObj, fuzzy);
        } else if (classDoc.inheritedMethods.containsKey(methodName.toLowerCase())) {
            return get(classDoc.inheritedMethods.get(methodName.toLowerCase()) + '.' + searchObj);
        }
        return Collections.emptyList();
    }
}

From source file:br.esp.sysevent.web.ajax.InscricaoAjaxService.java

public Collection<Inscricao> findByIdGrupoIdade(final String idGrupoIdade) {
    if (CharSequenceUtils.isBlank(idGrupoIdade)) {
        return Collections.emptyList();
    }/*  www . j  av  a 2 s .  c o m*/
    return inscricaoService.findByIdGrupoIdade(NumberUtils.parseLong(idGrupoIdade));
}

From source file:org.hawkular.apm.server.api.utils.zipkin.SpanHttpDeriverUtil.java

/**
 * Method returns list of http status codes.
 *
 * @param binaryAnnotations zipkin binary annotations
 * @return http status codes//w  w  w.  j a v a 2s .c  o  m
 */
public static List<HttpCode> getHttpStatusCodes(List<BinaryAnnotation> binaryAnnotations) {
    if (binaryAnnotations == null) {
        return Collections.emptyList();
    }

    List<HttpCode> httpCodes = new ArrayList<>();

    for (BinaryAnnotation binaryAnnotation : binaryAnnotations) {
        if (Constants.ZIPKIN_BIN_ANNOTATION_HTTP_STATUS_CODE.equals(binaryAnnotation.getKey())
                && binaryAnnotation.getValue() != null) {

            String strHttpCode = binaryAnnotation.getValue();
            Integer httpCode = toInt(strHttpCode.trim());

            if (httpCode != null) {
                String description = EnglishReasonPhraseCatalog.INSTANCE.getReason(httpCode, Locale.ENGLISH);
                httpCodes.add(new HttpCode(httpCode, description));
            }
        }

    }
    return httpCodes;
}

From source file:com.alibaba.openapi.client.util.URLEncodedUtils.java

/**
 * Returns a list of {@link NameValuePair NameValuePairs} as built from the
 * URI's query portion. For example, a URI of
 * http://example.org/path/to/file?a=1&b=2&c=3 would return a list of three
 * NameValuePairs, one for a=1, one for b=2, and one for c=3.
 * <p>/*from   www.j av a  2  s.c  o m*/
 * This is typically useful while parsing an HTTP PUT.
 * 
 * @param uri
 *            uri to parse
 * @param encoding
 *            encoding to use while parsing the query
 */
public static List<NameValuePair> parse(final URI uri, final String encoding) {
    List<NameValuePair> result = Collections.emptyList();
    final String query = uri.getRawQuery();
    if (query != null && query.length() > 0) {
        result = new ArrayList<NameValuePair>();
        parse(result, new Scanner(query), encoding);
    }
    return result;
}

From source file:Main.java

public static <T> Collection<T> nullSafeCollection(Collection<T> source) {
    return source == null ? Collections.emptyList() : source;
}

From source file:com.twentyoneechoes.borges.task.DownloadTaskHelper.java

public static List<SmbFile> getFiles(String user, String password, String path) {
    NtlmPasswordAuthentication auth = new NtlmPasswordAuthentication("", user, password);

    Log.d("SMB SEARCHER", "lookin for files in " + path);
    List<SmbFile> files = Collections.emptyList();
    try {/*from  w  w w.  j av  a 2 s . com*/
        files = VideoUtils.getFilesFromDir(path, auth);
    } catch (Exception e) {
        e.printStackTrace();
    }

    Log.d("SMB SEARCHER", "have files! " + files.size() + " of them! here they are: " + files);
    return files;
}

From source file:com.facebook.stetho.inspector.protocol.module.HeapProfiler.java

@ChromeDevtoolsMethod
public JsonRpcResult getProfileHeaders(JsonRpcPeer peer, JSONObject params) {
    ProfileHeaderResponse response = new ProfileHeaderResponse();
    response.headers = Collections.emptyList();
    return response;
}

From source file:example.app.config.gemfire.GemFireDependsOnBeanFactoryPostProcessor.java

@SafeVarargs
static <T> List<T> asList(T... array) {
    return (array != null ? Arrays.asList(array) : Collections.emptyList());
}

From source file:Main.java

public static List<Element> elements(Element element, Set<String> allowedTagNames) {
    if (element == null || !element.hasChildNodes()) {
        return Collections.emptyList();
    }//from   w  ww.ja  va 2s. c  o  m

    List<Element> elements = new ArrayList<Element>();
    for (Node child = element.getFirstChild(); child != null; child = child.getNextSibling()) {
        if (child.getNodeType() == Node.ELEMENT_NODE) {
            Element childElement = (Element) child;
            if (allowedTagNames.contains(child.getLocalName())) {
                elements.add(childElement);
            }
        }
    }
    return elements;
}

From source file:bz.tsung.jsonapi4j.serialization.DataSerializer.java

@Override
public void serialize(Data<Resource> data, JsonGenerator jsonGenerator, SerializerProvider serializerProvider)
        throws IOException {
    Collection<Resource> list = data.get();
    if (data.isToOne()) {
        if (list == null || list.isEmpty()) {
            jsonGenerator.writeObject(null);
            return;
        }//from  w w w  . j a v a  2  s . com
        jsonGenerator.writeObject(list.iterator().next());
        return;
    }
    jsonGenerator.writeObject((list == null) ? Collections.emptyList() : list);
}