Example usage for java.util List isEmpty

Introduction

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

Prototype

boolean isEmpty();

Source Link

Document

Returns true if this list contains no elements.

Usage

From source file:com.cloudera.oryx.ml.param.GridSearch.java

/**
 * @param ranges ranges of hyperparameters to try, one per hyperparameters
 * @param candidates minimum number of candidates to be built
 * @return smallest value such that picking that many values from each hyperparameter would result
 *  in at least the requested minimum number of candidate combinations
 *//*  w  w w .  j a  v a  2 s . c  o m*/
private static int chooseValuesPerHyperParam(List<? extends HyperParamValues<?>> ranges, int candidates) {
    if (ranges.isEmpty()) {
        return 0;
    }
    int valuesPerHyperParam = 0;
    long lastTotal;
    long total = 0;
    do {
        valuesPerHyperParam++;
        lastTotal = total;
        total = 1;
        for (HyperParamValues<?> range : ranges) {
            total *= Math.min(valuesPerHyperParam, range.getNumDistinctValues());
        }
        // Keep going until values-per-hyperparam is enough to generate enough candidates,
        // but stop early if it won't increase anyway because there aren't enough distinct values
    } while (total < candidates && total > lastTotal);
    return valuesPerHyperParam;
}

From source file:Main.java

/**
 * Checks the availability of the DownloadManager.
 *
 * @param context used to update the device version and DownloadManager information
 * @return true if the download manager is available
 *//* w  w  w  .j  av  a  2 s  .  co m*/
public static boolean isDownloadManagerAvailable(Context context) {
    try {
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.GINGERBREAD) {
            return false;
        }
        Intent intent = new Intent(Intent.ACTION_MAIN);
        intent.addCategory(Intent.CATEGORY_LAUNCHER);
        intent.setClassName("com.android.providers.downloads.ui",
                "com.android.providers.downloads.ui.DownloadList");
        List<ResolveInfo> list = context.getPackageManager().queryIntentActivities(intent,
                PackageManager.MATCH_DEFAULT_ONLY);
        return !list.isEmpty();
    } catch (Exception e) {
        return false;
    }
}

From source file:com.vrem.util.EnumUtils.java

public static <T extends Enum> T find(@NonNull Class<T> enumType, @NonNull Predicate<T> predicate,
        @NonNull T defaultValue) {//from  w  w w  .  j a  v  a2  s.  c o m
    List<T> results = new ArrayList<>(CollectionUtils.select(values(enumType), predicate));
    return results.isEmpty() ? defaultValue : results.get(0);
}

From source file:it.vige.greenarea.gtg.webservice.auth.LDAPauth.java

public static String doAuthentication(WebServiceContext wsContext) throws LDAPException {

    String result;//from   w  ww .  ja  va  2s . c o m
    MessageContext mctx = wsContext.getMessageContext();

    Map<String, Object> http_headers = (Map) mctx.get(MessageContext.HTTP_REQUEST_HEADERS);
    List<Object> list = (List) http_headers.get("Authorization");

    if (list == null || list.isEmpty()) {
        result = "Authentication failed! This WS needs BASIC Authentication!";
        throw new LDAPException(ResultCode.AUTH_METHOD_NOT_SUPPORTED, result);
    }

    String userpass = (String) list.get(0);
    userpass = userpass.substring(5);
    byte[] buf = Base64.decodeBase64(userpass.getBytes());// decodeBase64(userpass.getBytes());

    String credentials = StringUtils.newStringUtf8(buf);
    String username;
    String password;

    int p = credentials.indexOf(":");

    if (p > -1) {

        username = credentials.substring(0, p);

        password = credentials.substring(p + 1);

    } else {

        result = "There was an error while decoding the Authentication!";
        throw new LDAPException(ResultCode.DECODING_ERROR, result);
    }
    /*
     * Creazione di una "Identity" Se non mi serve un sottodominio, posso
     * anche usare il costruttore Identity(usr,pwd)
     */
    logger.debug("*** LOG *** username: " + username + " pwd: " + password);
    logger.debug("*** LOG *** username: " + username + " AUTHORIZED!");
    return username;
}

From source file:Main.java

public static boolean isIntentAvailable(Context context, String action) {

    final PackageManager packageManager = context.getPackageManager();
    final Intent intent = new Intent(action);
    List<ResolveInfo> resolveInfo = packageManager.queryIntentActivities(intent,
            PackageManager.MATCH_DEFAULT_ONLY);
    return resolveInfo != null && !resolveInfo.isEmpty();
}

From source file:fr.wirth.web.service.SecurityService.java

private static List<GrantedAuthority> toGrantedAutorithy(List<Role> roles) {
    List<GrantedAuthority> res = new ArrayList<GrantedAuthority>();
    if (roles != null && !roles.isEmpty()) {
        for (Role r : roles) {
            res.add(new SimpleGrantedAuthority(r.getName()));
        }/*  www. j a  v  a  2  s .  c o  m*/
    }

    return res;
}

From source file:org.edgexfoundry.EdgeXConfigWatcherApplication.java

public static List<CatalogService> getApplicationServices(Consul consul) {
    List<CatalogService> services = consul.catalogClient().getService(serviceName).getResponse();
    if (services.isEmpty()) {
        LOGGER.info("This service hasn't started up");
        System.exit(0);//from   ww w .  j  a  v a 2 s  .c o  m
    }
    return services;
}

From source file:Main.java

public static String param(String name, Container c) {
    List<JTextField> filter = new ArrayList<JTextField>();
    searchFor(c, JTextField.class, filter, name.replaceAll("\\[", "\\[").replaceAll("\\]", "\\]"));
    return filter.isEmpty() ? null : filter.get(0).getText();
}

From source file:edu.usu.sdl.openstorefront.service.manager.ReportManager.java

public static void cleanup() {
    ServiceProxy serviceProxy = ServiceProxy.getProxy();
    List<Report> allReports = getInprogessReports();
    if (!allReports.isEmpty()) {
        log.log(Level.WARNING, MessageFormat.format(
                "Reports are currently in progress.  Attempting to cancel and put back on queue.   Reports in progress:  {0}",
                allReports.size()));/*  w  w w  .j ava 2  s. c om*/

        List<TaskFuture> taskFutures = AsyncTaskManager.getTasksByName(TaskRequest.TASKNAME_REPORT);
        for (TaskFuture taskFuture : taskFutures) {
            String reportId = (String) taskFuture.getTaskData().get(TaskRequest.DATAKEY_REPORT_ID);
            if (StringUtils.isNotBlank(reportId)) {
                if (taskFuture.cancel(true)) {
                    Report report = serviceProxy.getPersistenceService().findById(Report.class, reportId);
                    report.setRunStatus(RunStatus.PENDING);
                    report.setUpdateUser(OpenStorefrontConstant.SYSTEM_USER);
                    report.populateBaseUpdateFields();
                    serviceProxy.getPersistenceService().persist(report);
                } else {
                    log.log(Level.WARNING, MessageFormat.format(
                            "Unable to cancel report id: {0} it likely be in a fail state upon restart.  It can be safely deleted.",
                            reportId));
                }
            } else {
                log.log(Level.WARNING,
                        "Unable to find report id for a report task.  Unable to cleanly cancel.  Report can be clean up upon restart.");
            }
        }
    }
}

From source file:examples.mail.IMAPImportMbox.java

/**
 * Is the message wanted?/*from ww w. j  av  a  2 s . com*/
 *
 * @param msgNum the message number
 * @param line the From line
 * @param msgNums the list of wanted message numbers
 * @param contains the list of strings to be contained
 * @return true if the message is wanted
 */
private static boolean wanted(int msgNum, String line, BitSet msgNums, List<String> contains) {
    return (msgNums.isEmpty() && contains.isEmpty()) // no selectors
            || msgNums.get(msgNum) // matches message number
            || listContains(contains, line); // contains string
}