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:Main.java

/**
 * Judge whether an app is in background
 *
 * @param context/*from  ww w  . ja v a2s. c  om*/
 * @return
 */
public static boolean isAppInBackground(Context context) {
    ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
    List<ActivityManager.RunningTaskInfo> taskList = am.getRunningTasks(1);
    if (taskList != null && !taskList.isEmpty()) {
        ComponentName topActivity = taskList.get(0).topActivity;
        if (topActivity != null && !topActivity.getPackageName().equals(context.getPackageName())) {
            return true;
        }
    }
    return false;
}

From source file:io.milton.cloud.server.web.templating.EncodeUtils.java

public static boolean isEmpty(Object val) {
    if (val == null) {
        return true;
    } else if (val instanceof List) {
        List list = (List) val;
        return list.isEmpty();
    } else if (val instanceof String) {
        String s = (String) val;
        return StringUtils.isBlank(s);
    } else {//from   w w  w.  j  av a2  s.com
        return false;
    }
}

From source file:Main.java

public static boolean isAppBackground(Context context) {
    if (context != null) {
        ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
        @SuppressWarnings("deprecation")
        List<ActivityManager.RunningTaskInfo> tasks = am.getRunningTasks(1);
        if (!tasks.isEmpty()) {
            ComponentName topActivity = tasks.get(0).topActivity;
            if (!topActivity.getPackageName().equals(context.getPackageName())) {
                return true;
            }/*from  w w w  . ja  v  a2 s  .c o m*/
        }
    }
    return false;
}

From source file:Main.java

public static boolean isAppForeground(Context context, String packageName) {
    ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
    @SuppressWarnings("deprecation")
    List<ActivityManager.RunningTaskInfo> tasks = am.getRunningTasks(1);
    return tasks != null && !tasks.isEmpty() && tasks.get(0).topActivity.getPackageName().equals(packageName);
}

From source file:Main.java

public static <T> void addFirstAndRemoveOldIfNeed(List<T> dest, List<T> src) {
    if (dest == null) {
        return;//from w  w  w. j a  v a2 s .c  o m
    }

    if (src == null || src.isEmpty()) {
        return;
    }

    removeDuplicate(dest, src);
    dest.addAll(0, src);
}

From source file:Main.java

private static <T> List<T> copyList(List<T> original) {
    List<T> copy = null;/*from   w  w  w  .  j av a  2  s  . co m*/

    if (original != null) {
        copy = new ArrayList<T>();

        if (!original.isEmpty()) {
            copy.addAll(original);
        }
    }

    return copy;
}

From source file:de.codesourcery.eve.skills.db.dao.HibernateDAO.java

protected static <T> T getExactlyOneResult(List<T> result) {
    if (result.isEmpty()) {
        throw new EmptyResultDataAccessException(1);
    }//from   w w  w . j  ava  2  s  . com
    if (result.size() > 1) {
        throw new IncorrectResultSizeDataAccessException("Internal error, got more than I expected?", 1,
                result.size());
    }
    return result.get(0);
}

From source file:com.mpush.test.client.ConnClientTestMain.java

private static void testConnClient(int count, String userPrefix, int printDelay, boolean sync)
        throws Exception {
    Logs.init();//from  w w  w.j a v  a2  s.  c  om
    ConnClientBoot boot = new ConnClientBoot();
    boot.start().get();

    List<ServiceNode> serverList = boot.getServers();
    if (serverList.isEmpty()) {
        boot.stop();
        System.out.println("no mpush server.");
        return;
    }

    if (printDelay > 0) {
        Executors.newSingleThreadScheduledExecutor().scheduleAtFixedRate(
                () -> System.err.println(ConnClientChannelHandler.STATISTICS), 3, printDelay, TimeUnit.SECONDS);
    }

    for (int i = 0; i < count; i++) {
        String clientVersion = "1.0." + i;
        String osName = "android";
        String osVersion = "1.0.1";
        String userId = userPrefix + "user-" + i;
        String deviceId = userPrefix + "test-device-id-" + i;
        byte[] clientKey = CipherBox.I.randomAESKey();
        byte[] iv = CipherBox.I.randomAESIV();

        ClientConfig config = new ClientConfig();
        config.setClientKey(clientKey);
        config.setIv(iv);
        config.setClientVersion(clientVersion);
        config.setDeviceId(deviceId);
        config.setOsName(osName);
        config.setOsVersion(osVersion);
        config.setUserId(userId);

        int L = serverList.size();
        int index = (int) ((Math.random() % L) * L);
        ServiceNode node = serverList.get(index);

        ChannelFuture future = boot.connect(node.getAttr(ATTR_PUBLIC_IP), node.getPort(), config);
        if (sync)
            future.awaitUninterruptibly();
    }
}

From source file:ro.allevo.fintpws.security.RolesUtils.java

public static boolean hasReadAuthorityOnQueue(QueueEntity queueEntity) {
    EntityManagerFactory configEntityManagerFactory = Persistence.createEntityManagerFactory("fintpCFG");
    EntityManager entityManagerConfig = configEntityManagerFactory.createEntityManager();
    Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
    UserEntity loggedUser = (UserEntity) authentication.getPrincipal();
    Query query = entityManagerConfig
            .createQuery("SELECT ur.roleid FROM UserRoleEntity ur, QueuesRoleMapEntity qr "
                    + "WHERE ur.roleid = qr.roleid " + "AND ur.userid=:userid " + "AND qr.queueid=:queueid");
    query.setParameter("userid", loggedUser.getUserid());
    query.setParameter("queueid", queueEntity.getGuid());
    List roles = query.getResultList();
    if (roles.isEmpty()) {
        return false;
    }/*from   w  w  w.jav  a2s  .  c om*/
    return true;
}

From source file:ro.allevo.fintpws.security.RolesUtils.java

public static boolean hasWriteAuthorityOnQueue(QueueEntity queueEntity) {
    EntityManagerFactory configEntityManagerFactory = Persistence.createEntityManagerFactory("fintpCFG");
    EntityManager entityManagerConfig = configEntityManagerFactory.createEntityManager();
    Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
    UserEntity loggedUser = (UserEntity) authentication.getPrincipal();
    Query query = entityManagerConfig.createQuery(
            "SELECT ur.roleid FROM UserRoleEntity ur, QueuesRoleMapEntity qr " + "WHERE ur.roleid = qr.roleid "
                    + "AND ur.userid=:userid " + "AND qr.queueid=:queueid " + "AND qr.actiontype = 'RW'");
    query.setParameter("userid", loggedUser.getUserid());
    query.setParameter("queueid", queueEntity.getGuid());
    List roles = query.getResultList();
    if (roles.isEmpty()) {
        return false;
    }/*from w  w  w  .j  a v  a  2 s.  c om*/
    return true;
}