Example usage for java.util Collections emptyMap

Introduction

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

Prototype

@SuppressWarnings("unchecked")
public static final <K, V> Map<K, V> emptyMap()

Source Link

Document

Returns an empty map (immutable).

Usage

From source file:org.spring.data.gemfire.config.RegionPutAllBeanPostProcessor.java

protected Map getRegionData() {
    return (regionData != null ? regionData : Collections.emptyMap());
}

From source file:com.example.oauth.Authentication.java

private OAuth2Request request() {
    final ClientApplicationEntity clientApplication = accessTokenEntity.getClientApplication();
    return new OAuth2Request(Collections.emptyMap(), Long.toHexString(clientApplication.getId()),
            resourceUserAuthentication.getAuthorities(), true, accessToken.getScope(),
            Collections.singleton(ResourceConfig.RESOURCE_ID), clientApplication.getRedirectUri(),
            Collections.emptySet(), Collections.emptyMap());
}

From source file:ch.cyberduck.core.AbstractCache.java

public AbstractCache(int size) {
    if (size == Integer.MAX_VALUE) {
        // Unlimited
        impl = Collections.synchronizedMap(new LinkedHashMap<T, AttributedList<T>>());
        reverse = Collections.synchronizedMap(new LinkedHashMap<CacheReference, T>());
    } else if (size == 0) {
        impl = Collections.emptyMap();
        reverse = Collections.emptyMap();
    } else {/*from   w ww.  jav  a2  s .  c  om*/
        // Will inflate to the given size
        impl = Collections.synchronizedMap(new LRUMap<T, AttributedList<T>>(size));
        reverse = Collections.synchronizedMap(new LinkedHashMap<CacheReference, T>());
    }
}

From source file:com.github.rnewson.couchdb.lucene.couchdb.DesignDocument.java

public Map<String, View> getAllViews() throws JSONException {
    if (fulltext == null)
        return Collections.emptyMap();
    final Map<String, View> result = new HashMap<String, View>();
    final Iterator<?> it = fulltext.keys();
    while (it.hasNext()) {
        final Object key = it.next();
        final String name = (String) key;
        final View view = getView(name);
        if (view != null) {
            result.put(name, view);//  w w w . j  a  va2 s. c om
        }
    }
    return result;
}

From source file:be.ordina.msdashboard.controllers.NodesControllerTest.java

@Test
public void getDependenciesGraphJson() {
    doReturn(Collections.emptyMap()).when(graphRetriever).retrieve();

    HttpEntity<Map<String, Object>> httpEntity = nodesController.getDependenciesGraphJson();

    assertThat(httpEntity.getBody()).isEmpty();
}

From source file:io.fluo.webindex.data.fluo.UriCountExport.java

@Override
protected Map<RowColumn, Bytes> generateData(String pageID, Optional<UriInfo> val) {
    if (val.orElse(UriInfo.ZERO).equals(UriInfo.ZERO)) {
        return Collections.emptyMap();
    }// www. j av  a 2s.  c  o  m

    UriInfo uriInfo = val.get();

    Map<RowColumn, Bytes> rcMap = new HashMap<>();
    Bytes linksTo = Bytes.of("" + uriInfo.linksTo);
    rcMap.put(new RowColumn(createTotalRow(pageID, uriInfo.linksTo), Column.EMPTY), linksTo);
    String domain = URL.fromPageID(pageID).getReverseDomain();
    String domainRow = encodeDomainRankPageId(domain, uriInfo.linksTo, pageID);
    rcMap.put(new RowColumn(domainRow, new Column(Constants.RANK, "")), linksTo);
    rcMap.put(new RowColumn("p:" + pageID, FluoConstants.PAGE_INCOUNT_COL), linksTo);
    return rcMap;
}

From source file:ddf.catalog.transformer.html.HtmlMetacardTransformerTest.java

@Test(expected = CatalogTransformerException.class)
public void testNullMetacardTransform() throws CatalogTransformerException {
    HtmlMetacardTransformer htmlTransformer = new HtmlMetacardTransformer(EMPTY_CATEGORY_LIST);
    htmlTransformer.transform(null, Collections.emptyMap());
}

From source file:io.apiman.cli.util.DeclarativeUtil.java

/**
 * Load the Declaration from the given Path, using the mapper provided.
 *
 * @param path       the Path to the declaration
 * @param mapper     the Mapper to use//from w  w w. jav  a2s . com
 * @param properties property placeholders to resolve
 * @return the Declaration
 */
public static Declaration loadDeclaration(Path path, ObjectMapper mapper, Collection<String> properties) {
    final Map<String, String> parsedProperties = BeanUtil.parseReplacements(properties);

    try (InputStream is = Files.newInputStream(path)) {
        String fileContents = CharStreams.toString(new InputStreamReader(is));
        LOGGER.trace("Declaration file raw: {}", fileContents);

        Declaration declaration = loadDeclaration(mapper, fileContents, parsedProperties);

        // check for the presence of shared properties in the declaration
        final Map<String, String> sharedProperties = ofNullable(declaration.getShared())
                .map(SharedItems::getProperties).orElse(Collections.emptyMap());

        if (sharedProperties.size() > 0) {
            LOGGER.trace("Resolving {} shared placeholders", sharedProperties.size());
            parsedProperties.putAll(sharedProperties);

            // this is not very efficient, as it requires parsing the declaration twice
            declaration = loadDeclaration(mapper, fileContents, parsedProperties);
        }

        return declaration;

    } catch (IOException e) {
        throw new DeclarativeException(e);
    }
}

From source file:com.jxt.web.mapper.AnnotationMapper.java

@Override
public Map<Long, List<AnnotationBo>> mapRow(Result result, int rowNum) throws Exception {
    if (result.isEmpty()) {
        return Collections.emptyMap();
    }/* w  w  w. j  av a2  s . c  o m*/
    final Cell[] rawCells = result.rawCells();
    Map<Long, List<AnnotationBo>> annotationList = new HashMap<>();

    for (Cell cell : rawCells) {

        final Buffer buffer = new OffsetFixedBuffer(cell.getQualifierArray(), cell.getQualifierOffset(),
                cell.getQualifierLength());
        long spanId = buffer.readLong();

        if (CellUtil.matchingFamily(cell, HBaseTables.TRACES_CF_ANNOTATION)) {
            final int valueLength = cell.getValueLength();
            if (valueLength == 0) {
                continue;
            }

            buffer.setOffset(cell.getValueOffset());

            List<AnnotationBo> annotationBoList = annotationDecoder.decode(buffer);
            if (CollectionUtils.isNotEmpty(annotationBoList)) {
                annotationList.put(spanId, annotationBoList);
            }
        }
    }
    return annotationList;
}

From source file:com.sdl.odata.unmarshaller.json.ODataJsonActionParser.java

@Override
public Map<String, Object> parseRequestBody(String body) throws IOException {
    // The very primitive parser to parse simple key-value parameters
    if (isNullOrEmpty(body)) {
        return Collections.emptyMap();
    }/*from w  w w  .  ja v a  2 s. com*/

    Map<String, Object> parsedMap = OBJECT_MAPPER.readValue(body, new TypeReference<HashMap<String, Object>>() {
    });
    LOG.debug("The request body is parsed to map: {}", parsedMap);
    return parsedMap;
}