Example usage for java.util.concurrent ConcurrentHashMap ConcurrentHashMap

List of usage examples for java.util.concurrent ConcurrentHashMap ConcurrentHashMap

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Introduction

In this page you can find the example usage for java.util.concurrent ConcurrentHashMap ConcurrentHashMap.

Prototype

public ConcurrentHashMap()

Source Link

Document

Creates a new, empty map with the default initial table size (16).

Usage

From source file:Main.java

/**
 * A factory method of maps.//from  w w  w .  j a v  a  2  s. co m
 *
 * @param <K>
 *            key type
 * @param <V>
 *            value type
 * @param mapType
 *            map implementation identifier
 * @return an empty map
 */
public static <K, V> ConcurrentMap<K, V> newConcurrentMap() {
    return new ConcurrentHashMap<>();
}

From source file:Main.java

public static Method getGetter(Object bean, String property) {
    Map<String, Method> cache = GETTER_CACHE.get(bean.getClass());
    if (cache == null) {
        cache = new ConcurrentHashMap<String, Method>();
        for (Method method : bean.getClass().getMethods()) {
            if (Modifier.isPublic(method.getModifiers()) && !Modifier.isStatic(method.getModifiers())
                    && !void.class.equals(method.getReturnType()) && method.getParameterTypes().length == 0) {
                String name = method.getName();
                if (name.length() > 3 && name.startsWith("get")) {
                    cache.put(name.substring(3, 4).toLowerCase() + name.substring(4), method);
                } else if (name.length() > 2 && name.startsWith("is")) {
                    cache.put(name.substring(2, 3).toLowerCase() + name.substring(3), method);
                }/*from ww w  . jav a  2 s.c o m*/
            }
        }
        Map<String, Method> old = GETTER_CACHE.putIfAbsent(bean.getClass(), cache);
        if (old != null) {
            cache = old;
        }
    }
    return cache.get(property);
}

From source file:com.tinydream.scribeproxy.utils.Config.java

synchronized private static void init() {
    String path = System.getProperty("appconfig");
    String pathFile = path + File.separator + "application.ini";

    //        System.out.println("pathFile:" + pathFile);
    // init configuration
    config = new CompositeConfiguration();
    _hashConfig = new ConcurrentHashMap<String, String>();
    try {/*from  w  w w.ja  v a2s .c  om*/
        config.addConfiguration(new HierarchicalINIConfiguration(pathFile));
    } catch (ConfigurationException ex) {
        logger_.error("Can't load configuration file", ex);
        System.err.println("Bad configuration; unable to start server");
        System.exit(1);
    }
}

From source file:Main.java

/**
 * get the method start with 'get' or 'is'.
 *//*from ww  w .j  a  v a2  s  . c  om*/
public static Method getGetter(Object bean, String property) {
    Map<String, Method> cache = GETTER_CACHE.get(bean.getClass());
    if (cache == null) {
        cache = new ConcurrentHashMap<>();
        for (Method method : bean.getClass().getMethods()) {
            if (Modifier.isPublic(method.getModifiers()) && !Modifier.isStatic(method.getModifiers())
                    && !void.class.equals(method.getReturnType()) && method.getParameterTypes().length == 0) {
                String name = method.getName();
                if (name.length() > 3 && name.startsWith("get")) {
                    cache.put(name.substring(3, 4).toLowerCase() + name.substring(4), method);
                } else if (name.length() > 2 && name.startsWith("is")) {
                    cache.put(name.substring(2, 3).toLowerCase() + name.substring(3), method);
                }
            }
        }
        Map<String, Method> old = GETTER_CACHE.putIfAbsent(bean.getClass(), cache);
        if (old != null) {
            cache = old;
        }
    }
    return cache.get(property);
}

From source file:Main.java

/**
 * Make a {@link ConcurrentMap} that when {@link ConcurrentMap#get(Object)} is called an null is
 * returned the creator function is called and the value returned is used with {@link
 * ConcurrentMap#putIfAbsent(Object, Object)}. The value that ends up in the {@link
 * ConcurrentMap} is returned by the get function.
 *///  ww w. ja  v  a2s.  c om
public static <K, V> ConcurrentMap<K, V> makeDefaultsMap(final Function<K, V> creator) {
    return new ConcurrentHashMap<K, V>() {
        @Override
        public V get(Object keyObj) {
            V value = super.get(keyObj);
            if (value == null) {
                K key = (K) keyObj;
                value = creator.apply(key);
                final V existingValue = super.putIfAbsent(key, value);
                if (existingValue != null) {
                    value = existingValue;
                }
            }
            return value;
        }
    };
}

From source file:edu.eci.arsw.blindway.persistence.StubGamePersistence.java

public StubGamePersistence() {
    this.gamesState = new ConcurrentHashMap<>();
}

From source file:com.wineaccess.wineryOWS.WineryOwsAdapterHelper.java

/**
 * this method is to create the winery historical ows data
 * @param addWineryOwsPO//from ww w .ja  va 2 s  .c  o  m
 * return map the output map
 */
public static Map<String, Object> addUpdateWineryOwsData(final AddUpdateWineryOwsPO addUpdateWineryOwsPO) {

    logger.info("start add/update winery historical Ows data");

    final Map<String, Object> output = new ConcurrentHashMap<String, Object>();
    Response response = null;

    final WineryHistoricalOwsData historicalOwsData = WineryOwsDataRepository
            .getOwsDataByWineryId(Long.parseLong(addUpdateWineryOwsPO.getWineryid()));
    if (historicalOwsData != null) {

        if (isValidDates(addUpdateWineryOwsPO)) {
            populateOwsDataModelFromPO(addUpdateWineryOwsPO, historicalOwsData);
            WineryOwsDataRepository.update(historicalOwsData);

            AddUpdateWineryOwsVO addUpdateWineryOwsVO = new AddUpdateWineryOwsVO(
                    SystemErrorCode.WINERY_OWS_UPDATE_SUCCESS_TEXT);
            addUpdateWineryOwsVO.setId(historicalOwsData.getId());
            addUpdateWineryOwsVO.setWineryId(historicalOwsData.getWineryid());
            response = new com.wineaccess.response.SuccessResponse(addUpdateWineryOwsVO, SUCCESS_CODE);
        } else {
            response = ApplicationUtils.errorMessageGenerate(
                    WineaccessErrorCodes.SystemErrorCode.WINERY_DATE_ERROR,
                    WineaccessErrorCodes.SystemErrorCode.WINERY_DATE_ERROR_TEXT, SUCCESS_CODE);
        }

    } else {

        if (isValidDates(addUpdateWineryOwsPO)) {
            final WineryModel wineryModel = WineryRepository
                    .getWineryById(Long.parseLong(addUpdateWineryOwsPO.getWineryid()));
            if (wineryModel != null) {
                try {
                    WineryHistoricalOwsData wineryHistoricalOwsData = new WineryHistoricalOwsData();
                    populateOwsDataModelFromPO(addUpdateWineryOwsPO, wineryHistoricalOwsData);
                    WineryOwsDataRepository.save(wineryHistoricalOwsData);

                    AddUpdateWineryOwsVO addWineryOwsVO = new AddUpdateWineryOwsVO(
                            SystemErrorCode.WINERY_OWS_ADD_SUCCESS_TEXT);
                    addWineryOwsVO.setId(wineryHistoricalOwsData.getId());
                    addWineryOwsVO.setWineryId(wineryHistoricalOwsData.getWineryid());
                    response = new com.wineaccess.response.SuccessResponse(addWineryOwsVO, SUCCESS_CODE);

                } catch (Exception e) {
                    logger.error("Some error occured " + e.getMessage(), e);
                }
            } else {
                response = ApplicationUtils.errorMessageGenerate(
                        WineaccessErrorCodes.SystemErrorCode.WINERY_NOT_FOUND_OWS,
                        WineaccessErrorCodes.SystemErrorCode.WINERY_NOT_FOUND_OWS_TEXT, SUCCESS_CODE);
            }
        } else {
            response = ApplicationUtils.errorMessageGenerate(
                    WineaccessErrorCodes.SystemErrorCode.WINERY_DATE_ERROR,
                    WineaccessErrorCodes.SystemErrorCode.WINERY_DATE_ERROR_TEXT, SUCCESS_CODE);
        }

    }
    output.put(OUPUT_PARAM_KEY, response);
    logger.info("exit add/update winery historical Ows data");

    return output;
}

From source file:ConcurrentSet.java

/**
 * 
 */
public ConcurrentSet() {
    this.map = new ConcurrentHashMap<Q, Object>();
}

From source file:com.DSC.client.SecureChannel.java

/**
 * @param args/*  ww w .j  a v  a2 s.co  m*/
 * @throws InterruptedException 
 * @throws IOException 
 */
public static void main(String[] args) throws InterruptedException, IOException {
    /* Create their private & public keys */
    ECKey key = new ECKey();
    key.init();
    ProgramState.publicKey = (ECPublicKeyParameters) key.getPublic();
    ProgramState.privateKey = (ECPrivateKeyParameters) key.getPrivate();

    /* Create the IV engine */
    byte[] seed = new byte[64]; // 512 bit seed 
    SecureRandom random = new SecureRandom();
    random.nextBytes(seed);
    ProgramState.IVEngine = new ISAACRandomGenerator(new ISAACEngine());
    ProgramState.IVEngine.init(seed);

    /* Create the blacklist and trusted contacts */
    ProgramState.blacklist = ConcurrentHashMultiset.create();
    ProgramState.trustedKeys = new ConcurrentHashMap<String, Address>();

    /* Set the time for the client accurately using a NTP server */
    DateTimeUtils.setCurrentMillisOffset(getTimeOffset());
    ProgramState.fmt = DateTimeFormat.forPattern("HH:mm:ss");

    /* Set the default nick as anonymous */
    ProgramState.nick = "anonymous";

    /* Initialize ISAACRandomGenerator, set ProgramState.IVEngine */
    receiveController = new ReceiveController();
    sendController = new SendController();

    /* Start input event handler loop */
    eventLoop();
}

From source file:org.emmanuel.spring.chat.handlers.EchoMessageHandler.java

public EchoMessageHandler() {
    sessions = new ConcurrentHashMap<String, WebSocketSession>();
}