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:com.replaymod.replaystudio.pathing.serialize.LegacyTimelineConverter.java

public static Map<String, Timeline> convert(PathingRegistry registry, ReplayFile replayFile)
        throws IOException {
    KeyframeSet[] keyframeSets = readAndParse(replayFile);
    if (keyframeSets == null) {
        return Collections.emptyMap();
    }//w w  w . j a  v a 2 s .  c  om

    Map<String, Timeline> timelines = new LinkedHashMap<>();
    for (KeyframeSet keyframeSet : keyframeSets) {
        timelines.put(keyframeSet.name, convert(registry, keyframeSet));
    }
    return timelines;
}

From source file:com.feilong.tools.net.httpclient3.NameValuePairUtil.java

/**
 * nameValuePairs?Map.//from w  w w .  j a  v  a  2s  . c om
 *
 * @param nameValuePairs
 *            the name value pairs
 * @return if (Validator.isNotNullOrEmpty(nameValuePairs)), will return Collections.emptyMap()
 * @since 1.0.9
 */
public static Map<String, String> toMap(NameValuePair[] nameValuePairs) {
    if (Validator.isNotNullOrEmpty(nameValuePairs)) {
        Map<String, String> map = new TreeMap<String, String>();

        for (NameValuePair nameValuePair : nameValuePairs) {
            map.put(nameValuePair.getName(), nameValuePair.getValue());
        }

        return map;
    }
    return Collections.emptyMap();
}

From source file:com.ctriposs.rest4j.server.util.FileClassNameScanner.java

/**
 * Construct map from fully qualified class name to filename whose sources are found under a given source directory.
 * All source files are required to have an extension.
 *
 * @param sourceDir the source directory to scan
 * @param requiredExtension only include files whose extension equals to this parameter
 *                          null if no specific extension is required
 * @return map from fully qualified class name to filename for scanned source files.
 *//*from  w  ww .j  a  va 2s .co m*/
public static Map<String, String> scan(String sourceDir, String requiredExtension) {
    final String sourceDirWithSeparator = sourceDir.endsWith(File.separator) ? sourceDir
            : sourceDir + File.separator;
    final File dir = new File(sourceDirWithSeparator);
    if (!dir.exists() || !dir.isDirectory()) {
        return Collections.emptyMap();
    }

    // suppress the warning because of inconsistent FileUtils interface
    @SuppressWarnings("unchecked")
    final Collection<File> files = (Collection<File>) FileUtils.listFiles(dir, null, true);
    final Map<String, String> classFileNames = new HashMap<String, String>();
    final int prefixLength = sourceDirWithSeparator.length();
    for (File f : files) {
        assert (f.exists() && f.isFile());

        final int extensionIndex = f.getName().lastIndexOf('.');
        final String filePath = f.getPath();
        if (extensionIndex < 0 || !filePath.startsWith(sourceDirWithSeparator)) {
            continue;
        }

        final int reverseExtensionIndex = f.getName().length() - extensionIndex;
        final String classPathName = filePath.substring(prefixLength,
                filePath.length() - reverseExtensionIndex);
        if (classPathName.contains(".")) {
            // dot is not allowed in package name, thus not allowed in the directory path
            continue;
        }

        if (requiredExtension != null) {
            final String extension = f.getName().substring(extensionIndex + 1);
            if (!extension.equals(requiredExtension)) {
                continue;
            }
        }
        classFileNames.put(classPathName.replace(File.separator, "."), filePath);
    }

    return classFileNames;
}

From source file:io.wcm.caravan.pipeline.extensions.hal.client.action.DeepEmbedLinksTest.java

private DeepEmbedLinks createAction(String relation) {
    return new DeepEmbedLinks("testService", relation, Collections.emptyMap());
}

From source file:com.greenline.hrs.admin.cache.redis.util.RedisInfoParser.java

/**
 * infoString?map//w  ww.ja  v  a2s.c  o  m
 *
 * @param redisInfoStr
 * @return infoStrnullMap
 */
public static Map<String, String> infoMapParser(String redisInfoStr) {
    if (redisInfoStr == null || redisInfoStr.isEmpty()) {
        return Collections.emptyMap();
    }
    String[] infoTokens = redisInfoStr.split(INFO_PROPERTY_DELIMITER);
    Map<String, String> infoMap = new HashMap<String, String>(infoTokens.length * 2);
    String[] propTokens = null;
    for (String infoToken : infoTokens) {
        propTokens = StringUtils.split(infoToken, INFO_PROPERTY_KY_DELIMITER);
        if (propTokens.length == PROPERTY_TOKENS_LEN) {
            infoMap.put(propTokens[PROP_KEY_IDX], propTokens[PROP_VALUE_IDX]);
        }
    }
    return infoMap;
}

From source file:com.gae.ChannelAPIServlet.java

@Override
public void init() throws ServletException {
    try {// w w  w  .  j  av  a2 s  .com
        channelService = ChannelServiceFactory.getChannelService();
    } catch (ChannelFailureException e) {
        throw new RuntimeException(e);
    }
    try {
        CacheFactory cacheFactory = CacheManager.getInstance().getCacheFactory();
        cache = cacheFactory.createCache(Collections.emptyMap());
    } catch (CacheException e) {
        throw new RuntimeException(e);
    }
}

From source file:net.navasoft.madcoin.backend.services.vo.NoFilteredFields.java

/**
 * Gets the filtered fields.//  ww  w .j av  a  2 s. c  om
 * 
 * @return the filtered fields
 * @since 27/07/2014, 06:49:01 PM
 */
@Override
public Map<String, Object> getFilteredFields() {
    return Collections.emptyMap();
}

From source file:com.weibo.api.motan.protocol.restful.support.RestfulUtil.java

public static Map<String, String> decodeAttachments(MultivaluedMap<String, String> headers) {
    String value = headers.getFirst(ATTACHMENT_HEADER);

    Map<String, String> result = Collections.emptyMap();
    if (value != null && !value.isEmpty()) {
        result = new HashMap<String, String>();
        for (String kv : value.split(";")) {
            String[] pair = kv.split("=");
            if (pair.length == 2) {
                result.put(StringTools.urlDecode(pair[0]), StringTools.urlDecode(pair[1]));
            }//from   w ww.j a va  2s .  com
        }
    }

    return result;
}

From source file:com.hpcloud.mon.resource.serialization.SubAlarmExpressionSerializer.java

@Override
public void serialize(AlarmSubExpression value, JsonGenerator jgen, SerializerProvider provider)
        throws IOException, JsonProcessingException {
    jgen.writeStartObject();/* w  ww.  j  a v a2  s .c om*/
    jgen.writeStringField("function", value.getFunction().name());
    jgen.writeStringField("metric_name", value.getMetricDefinition().name);
    jgen.writeObjectField("dimensions", value.getMetricDefinition().dimensions == null ? Collections.emptyMap()
            : value.getMetricDefinition().dimensions);
    jgen.writeStringField("operator", value.getOperator().name());
    jgen.writeNumberField("threshold", value.getThreshold());
    jgen.writeNumberField("period", value.getPeriod());
    jgen.writeNumberField("periods", value.getPeriods());
    jgen.writeEndObject();
}

From source file:com.haulmont.cuba.core.entity.LocaleHelper.java

public static Map<String, String> getLocalizedValuesMap(String localeBundle) {
    if (StringUtils.isNotEmpty(localeBundle)) {
        Properties localeProperties = loadProperties(localeBundle);
        if (localeProperties != null) {
            Map<String, String> map = new HashMap<>();
            for (Map.Entry<Object, Object> entry : localeProperties.entrySet()) {
                map.put((String) entry.getKey(), (String) entry.getValue());
            }//from   w w  w.j a  va 2 s .c o  m
            return map;
        }
    }
    return Collections.emptyMap();
}