Example usage for java.util Map isEmpty

Introduction

In this page you can find the example usage for java.util Map isEmpty.

Prototype

boolean isEmpty();

Source Link

Document

Returns true if this map contains no key-value mappings.

Usage

From source file:com.ksc.http.apache.utils.ApacheUtils.java

/**
 * Returns a new HttpClientContext used for request execution.
 *//*from w w  w.ja v a 2 s. c om*/
public static HttpClientContext newClientContext(HttpClientSettings settings,
        Map<String, ? extends Object> attributes) {
    final HttpClientContext clientContext = new HttpClientContext();

    if (attributes != null && !attributes.isEmpty()) {
        for (Map.Entry<String, ?> entry : attributes.entrySet()) {
            clientContext.setAttribute(entry.getKey(), entry.getValue());
        }
    }

    addPreemptiveAuthenticationProxy(clientContext, settings);
    return clientContext;

}

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From source file:com.sunhz.projectutils.httputils.HttpClientUtils.java

/**
 * post access to the network, you need to use in the sub-thread
 *
 * @param url    url//from   ww w  .jav  a 2  s .  c  o  m
 * @param params params
 * @return response inputStream
 * @throws IOException In the case of non-200 status code is returned, it would have thrown
 */
public static InputStream postInputStream(String url, Map<String, String> params) throws IOException {
    List<NameValuePair> list = new ArrayList<NameValuePair>();
    if (params != null && !params.isEmpty()) {
        for (Map.Entry<String, String> entry : params.entrySet()) {
            list.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
        }
    }
    UrlEncodedFormEntity entity = new UrlEncodedFormEntity(list);
    HttpPost httpPost = new HttpPost(url);
    httpPost.setEntity(entity);
    org.apache.http.client.HttpClient client = new DefaultHttpClient();
    client.getParams().setParameter(CoreConnectionPNames.CONNECTION_TIMEOUT,
            Constant.TimeInApplication.NET_TIMEOUT);
    client.getParams().setParameter(CoreConnectionPNames.SO_TIMEOUT, Constant.TimeInApplication.NET_TIMEOUT);
    HttpResponse response = client.execute(httpPost);
    if (response.getStatusLine().getStatusCode() == 200) {
        return response.getEntity().getContent();
    } else {
        throw new IllegalArgumentException("postInputStreamInSubThread response status code is "
                + response.getStatusLine().getStatusCode());
    }

}

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From source file:com.jayway.restassured.internal.print.RequestPrinter.java

private static void addMapDetails(StringBuilder builder, String title, Map<String, ?> map) {
    appendTab(builder.append(title));// www.ja v  a 2 s. c o m
    if (map.isEmpty()) {
        builder.append(NONE).append(NEW_LINE);
    } else {
        int i = 0;
        for (Map.Entry<String, ?> entry : map.entrySet()) {
            if (i++ != 0) {
                appendFourTabs(builder);
            }
            final Object value = entry.getValue();
            builder.append(entry.getKey());
            if (!(value instanceof NoParameterValue)) {
                builder.append(EQUALS).append(value);
            }
            builder.append(NEW_LINE);
        }
    }
}

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From source file:com.bstek.dorado.util.Assert.java

/**
 * Map???message?<br>/*  w  w  w.jav  a 2  s . com*/
 * ?Map?nullsize0
 * @param map Map
 * @param message ??
 */
public static void notEmpty(Map<?, ?> map, String message) {
    if (map == null || map.isEmpty()) {
        throw new IllegalArgumentException(message);
    }
}

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From source file:com.tealcube.minecraft.bukkit.mythicdrops.utils.SocketGemUtil.java

public static SocketGem getRandomSocketGemWithChance() {
    Map<String, SocketGem> socketGemMap = MythicDropsPlugin.getInstance().getSockettingSettings()
            .getSocketGemMap();//from   w w w. ja  va  2s. c om
    if (socketGemMap == null || socketGemMap.isEmpty()) {
        return null;
    }
    double totalWeight = 0;
    for (SocketGem sg : socketGemMap.values()) {
        totalWeight += sg.getChance();
    }

    double chosenWeight = MythicDropsPlugin.getInstance().getRandom().nextDouble() * totalWeight;

    double currentWeight = 0;

    List<SocketGem> l = new ArrayList<>(socketGemMap.values());
    Collections.shuffle(l);

    for (SocketGem sg : socketGemMap.values()) {
        currentWeight += sg.getChance();

        if (currentWeight >= chosenWeight) {
            return sg;
        }
    }
    return null;
}

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From source file:com.datumbox.common.dataobjects.MatrixDataset.java

/**
 * Parses a dataset and converts it to MatrixDataset by using an already
 * existing mapping between feature names and column ids. Typically used
 * to parse the testing or validation dataset.
 * //from  w w w.  j  ava2  s. com
 * @param newDataset
 * @param featureIdsReference
 * @return 
 */
public static MatrixDataset parseDataset(Dataset newDataset, Map<Object, Integer> featureIdsReference) {
    if (featureIdsReference.isEmpty()) {
        throw new RuntimeException("The featureIdsReference map should not be empty.");
    }

    int n = newDataset.size();
    int d = featureIdsReference.size();

    MatrixDataset m = new MatrixDataset(new ArrayRealVector(n), new BlockRealMatrix(n, d), featureIdsReference);

    if (newDataset.isEmpty()) {
        return m;
    }

    boolean extractY = (Dataset
            .value2ColumnType(newDataset.iterator().next().getY()) == Dataset.ColumnType.NUMERICAL);

    boolean addConstantColumn = m.feature2ColumnId.containsKey(Dataset.constantColumnName);

    for (Record r : newDataset) {
        int row = r.getId();

        if (extractY) {
            m.Y.setEntry(row, Dataset.toDouble(r.getY()));
        }

        if (addConstantColumn) {
            m.X.setEntry(row, 0, 1.0); //add the constant column
        }
        for (Map.Entry<Object, Object> entry : r.getX().entrySet()) {
            Object feature = entry.getKey();
            Double value = Dataset.toDouble(entry.getValue());
            if (value != null) {
                Integer featureId = m.feature2ColumnId.get(feature);
                if (featureId != null) {//if the feature exists in our database
                    m.X.setEntry(row, featureId, value);
                }
            } else {
                //else the X matrix maintains the 0.0 default value
            }
        }
    }

    return m;
}

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From source file:com.precioustech.fxtrading.utils.TradingUtils.java

/**
 * A utility method that is an alternative to having to write null and empty
 * checks for maps at various places in the code. Akin to
 * StringUtils.isEmpty() which returns true if input String is null or 0
 * length.// w w w . j  av a 2  s  . com
 * 
 * @param map
 * @return boolean true if map is null or is empty else false.
 * @see StringUtils#isEmpty(CharSequence)
 */
public static final boolean isEmpty(Map<?, ?> map) {
    return map == null || map.isEmpty();
}

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

/**
 * RedisInfoMapT?RedisInfoMapRedis?//from ww  w  .  ja va2 s.c  o  m
 * RedisServerInfoPO
 *
 * @param instanceType class
 * @param redisInfoMap Map
 * @param <T>          
 * @return instanceTypeinfomapnullinfoMap?instancenullRedisServerInfoPO
 */
public static <T> T parserRedisInfo(Class<T> instanceType, Map<String, String> redisInfoMap) {
    if (instanceType == null || redisInfoMap == null || redisInfoMap.isEmpty()) {
        return null;
    }
    T instance = null;
    try {
        instance = instanceType.newInstance();
    } catch (Exception e) {
        LOG.error("Instance:" + instanceType.getName(), e);
        return null;
    }
    Field[] fields = instanceType.getDeclaredFields();
    String inputName = null;
    for (Field field : fields) {
        ParserField parserField = field.getAnnotation(ParserField.class);
        if (parserField != null) {
            inputName = parserField.inputName();
        } else {
            inputName = field.getName();
        }
        if (redisInfoMap.containsKey(inputName)) {
            field.setAccessible(true);
            try {
                field.set(instance, ConvertUtils.convert(redisInfoMap.get(inputName), field.getType()));
            } catch (Exception e) {
                LOG.error("Field:" + field.getName() + "\t|\t value:" + redisInfoMap.get(inputName), e);
            }
        }
    }
    return instance;
}

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From source file:org.keycloak.adapters.authentication.ClientCredentialsProviderUtils.java

public static ClientCredentialsProvider bootstrapClientAuthenticator(KeycloakDeployment deployment) {
    String clientId = deployment.getResourceName();
    Map<String, Object> clientCredentials = deployment.getResourceCredentials();

    String authenticatorId;/*from   ww  w . ja  v  a 2  s. c om*/
    if (clientCredentials == null || clientCredentials.isEmpty()) {
        authenticatorId = ClientIdAndSecretCredentialsProvider.PROVIDER_ID;
    } else {
        authenticatorId = (String) clientCredentials.get("provider");
        if (authenticatorId == null) {
            // If there is just one credential type, use provider from it
            if (clientCredentials.size() == 1) {
                authenticatorId = clientCredentials.keySet().iterator().next();
            } else {
                throw new RuntimeException(
                        "Can't identify clientAuthenticator from the configuration of client '" + clientId
                                + "' . Check your adapter configurations");
            }
        }
    }

    logger.debugf("Using provider '%s' for authentication of client '%s'", authenticatorId, clientId);

    Map<String, ClientCredentialsProvider> authenticators = new HashMap<>();
    loadAuthenticators(authenticators, ClientCredentialsProviderUtils.class.getClassLoader());
    loadAuthenticators(authenticators, Thread.currentThread().getContextClassLoader());

    ClientCredentialsProvider authenticator = authenticators.get(authenticatorId);
    if (authenticator == null) {
        throw new RuntimeException("Couldn't find ClientCredentialsProvider implementation class with id: "
                + authenticatorId + ". Loaded authentication providers: " + authenticators.keySet());
    }

    Object config = (clientCredentials == null) ? null : clientCredentials.get(authenticatorId);
    authenticator.init(deployment, config);

    return authenticator;
}

---

From source file:com.hubrick.vertx.s3.util.UrlEncodingUtils.java

public static String addParamsSortedToUrl(String url, Map<String, String> params) {
    checkNotNull(url, "url must not be null");
    checkNotNull(!url.isEmpty(), "url must not be empty");
    checkNotNull(params, "params must not be null");
    checkNotNull(!params.isEmpty(), "params must not be empty");

    final String baseUrl = extractBaseUrl(url);
    final String urlParams = baseUrl.equals(url) ? "" : url.replace(baseUrl + "?", "");
    final List<NameValuePair> nameValuePairs = URLEncodedUtils.parse(urlParams, Charsets.UTF_8);

    for (Map.Entry<String, String> paramToUrlEncode : params.entrySet().stream()
            .sorted(Comparator.comparing(Map.Entry::getKey)).collect(Collectors.toList())) {
        nameValuePairs.add(new BasicNameValuePair(paramToUrlEncode.getKey(), paramToUrlEncode.getValue()));
    }//ww w .  j  av  a 2s .  c  om

    return baseUrl + "?" + URLEncodedUtils.format(nameValuePairs, Charsets.UTF_8);
}

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