Example usage for java.util List isEmpty

List of usage examples for java.util List isEmpty

  1. HOME
  2. Java
  3. java
  4. java.util.*
  5. List
  6. 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.formkiq.core.webflow.FlowManager.java

/**
 * Start new WebFlow.//from www .  j  a v  a2s. c om
 * @param <T> {@link FlowEventProcessor}
 * @param request {@link HttpServletRequest}
 * @param eventProcessor Class
 * @param states {@link List}
 * @return {@link WebFlow}
 */
public static <T extends FlowEventProcessor> WebFlow start(final HttpServletRequest request,
        final Class<T> eventProcessor, final List<FlowState> states) {

    if (states.isEmpty()) {
        throw new IllegalArgumentException("states is empty");
    }

    List<FlowState> newstates = new ArrayList<>(states);
    if (!FlowStateType.START.equals(newstates.get(0).getType())) {
        newstates.add(0, new FlowState(FlowStateType.START));
    }

    if (!FlowStateType.START.equals(newstates.get(0).getType())) {
        newstates.add(0, new FlowState(FlowStateType.START));
    }

    if (!last(newstates).isEnd()) {
        newstates.add(new FlowState(FlowStateType.END));
    }

    int webflowSessionID = getNextWebFlowSessionId(request);

    WebFlow flow = new WebFlow(webflowSessionID, eventProcessor, newstates);

    request.getSession().setAttribute(getExecutionSessionKey(flow.getSessionKey()).getLeft(), flow);

    return flow;
}

From source file:me.zhanghai.mipsasm.Cli.java

public static boolean checkCommandLine(CommandLine commandLine) {
    @SuppressWarnings("unchecked")
    List<String> args = (List<String>) commandLine.getArgList();
    if (!args.isEmpty()) {
        System.err.println("Unknown argument: " + args);
        printHelp();// w  ww .ja  va 2  s. c o m
        return false;
    } else {
        return true;
    }
}

From source file:com.thinkbiganalytics.jobrepo.query.model.transform.JobStatusTransform.java

/**
 * Enusre that the list contains a date matching Now - the Period.  if not add it to the collection
 *///from  w w  w  .jav  a  2s.  co  m
public static void ensureDateFromPeriodExists(List<JobStatusCount> jobStatusCounts, Period period) {

    //add in the very first date relative to the period if it doesnt exist with a count of 0
    if (jobStatusCounts != null && !jobStatusCounts.isEmpty()) {
        //get the first min date in the result set
        Date firstDateInResultSet = jobStatusCounts.stream().map(jobStatusCount -> jobStatusCount.getDate())
                .min(Date::compareTo).get();

        Date firstDate = DateUtils.truncate(DateTimeUtil.getNowUTCTime().minus(period).toDate(), Calendar.DATE);
        boolean containsFirstDate = jobStatusCounts.stream()
                .anyMatch(jobStatusCount -> jobStatusCount.getDate().equals(firstDate));
        if (!containsFirstDate) {
            JobStatusCount first = jobStatusCounts.get(0);
            JobStatusCount min = new JobStatusCountResult(first);
            min.setDate(firstDate);
            min.setCount(new Long(0));
            jobStatusCounts.add(min);
        }
    }

}

From source file:jp.primecloud.auto.tool.management.pccapi.PccApiGenerateService.java

public static void genarate(CommandLine commandLine) throws AutoException {
    Long userNo = Long.parseLong(commandLine.getOptionValue("userno"));
    String generateType = commandLine.getOptionValue("generatetype");

    try {/*from w  w  w .ja  va 2s.c  o m*/
        String userSql = "SELECT * FROM USER WHERE USER_NO =" + userNo;
        List<User> users = SQLMain.selectExecuteWithResult(userSql, User.class);
        User user = users.get(0);

        if (generateType != null && generateType.equals("accessId")) {
            String apiAccessId = "";
            while (true) {
                apiAccessId = generateAccessId();
                String apiSql = "SELECT * FROM API_CERTIFICATE WHERE API_ACCESS_ID ='" + apiAccessId + "'";
                List<ApiCertificate> apiCertificates = SQLMain.selectExecuteWithResult(apiSql,
                        ApiCertificate.class);
                if (apiCertificates.isEmpty()) {
                    break;
                }
            }
            log.info(user.getUsername() + " ? accessId ?????");
            System.out.println(apiAccessId);
        } else if (generateType != null && generateType.equals("secretKey")) {
            String apiSecretKey = "";
            while (true) {
                apiSecretKey = generateSecretKey();
                String apiSql = "SELECT * FROM API_CERTIFICATE WHERE API_SECRET_KEY ='" + apiSecretKey + "'";
                List<ApiCertificate> apiCertificates = SQLMain.selectExecuteWithResult(apiSql,
                        ApiCertificate.class);
                if (apiCertificates.isEmpty()) {
                    break;
                }
            }
            log.info(user.getUsername() + " ? secretKey ?????");
            System.out.println(apiSecretKey);
        } else {
            log.error("generateType ?????");
            System.out.println("GENERATE_ERROR");
        }
    } catch (Exception e) {
        log.error("PCC-API????????userNo:" + userNo
                + " generateType:" + generateType, e);
        System.out.println("GENERATE_ERROR");
    }
}

From source file:com.u2apple.tool.util.AndroidDeviceUtils.java

public static List<AndroidDeviceRanking> parse(List<AndroidDevice> devices) {
    List<AndroidDeviceRanking> androidDevices = new ArrayList<>();
    if (devices != null && !devices.isEmpty()) {
        //            devices.stream().forEach((device) -> {
        //                androidDevices.add(new AndroidDeviceRanking(device));
        //            });
        devices.stream().map(device -> new AndroidDeviceRanking(device)).forEach(androidDevices::add);
    }/*from   www .  ja  v a2 s. com*/
    return androidDevices;
}

From source file:se.uu.it.cs.recsys.ruleminer.impl.FPGrowthImpl.java

/**
 *
 * @param singlePrefixPath, ordered single prefix path from a FP Tree
 * @return pairs of (frequent pattern, its support); returns empty map if
 * input is null or empty/*from   www  . j  a  v a2 s . c o  m*/
 */
public static Map<Set<Integer>, Integer> getFrequentPatternFromSinglePrefixPath(List<Item> singlePrefixPath) {
    if (singlePrefixPath == null || singlePrefixPath.isEmpty()) {
        LOGGER.warn("Nonsence to give null or empty input. Do you agree?");
        return Collections.EMPTY_MAP;
    }

    Set<Item> itemSetFromPath = new HashSet<>(singlePrefixPath);

    Set<Set<Item>> powerSet = Sets.powerSet(itemSetFromPath);

    Map<Set<Integer>, Integer> r = new HashMap<>();

    Util.removeEmptySet(powerSet).forEach(itemSet -> {
        int localMinSupport = FPTreeUtil.getMinSupport(itemSet);

        r.put(itemSet.stream().map(item -> item.getId()).collect(Collectors.toSet()), localMinSupport);
    });

    return r;
}

From source file:io.lavagna.service.ProjectService.java

private static <T> T firstOrNull(List<T> t) {
    return t.isEmpty() ? null : t.get(0);
}

From source file:com.lonepulse.robozombie.util.Is.java

/**
 * <p>Determines if the given type terminates an endpoint lookup along an inheritance hierarchy.</p>
 * /*w  w  w  .j  av a  2 s  .  c  om*/
 * <p>This evaluation is performed using a basic conditional check which will return {@code true} if 
 * the given type is in the specified packages list. If a package list is not provided, the hierarchy 
 * is deemed to have terminated if the given type is ina a package whose name starts with <b>"android."</b>, 
 * <b>"java."</b>, <b>"javax."</b> or <b>"junit."</b>.</p>
 * 
 * <p>Will be rendered obsolete if a future enhancement allows isolation of packages to scan for 
 * endpoint injection.</p>
 *
 * @param type
 *          the {@link Class} of the type to be checked for hierarchy termination 
 * <br><br>
 * @param packagePrefixes
 *          the packages prefixes to restrict the inheritance hierarchy to; else {@code null} 
 *          or {@code empty} to specify the <b>restriction packages</b> as "android.", "java.", 
 *          "javax." or "junit."
 * <br><br>
 * @return {@code true} if this type represents a termination in the hierarchy 
 * <br><br>
 * @since 1.2.4
 */
public static boolean hierarchyTerminal(Class<?> type, List<String> packagePrefixes) {

    String name = type.getName();

    if (packagePrefixes != null && !packagePrefixes.isEmpty()) {

        for (String packagePrefix : packagePrefixes) {

            if (name.startsWith(packagePrefix)) {

                return false;
            }
        }

        return true;
    }

    return name.startsWith("android.") || name.startsWith("java.") || name.startsWith("javax.")
            || name.startsWith("junit.");
}

From source file:me.fromgate.facechat.UpdateChecker.java

/**
 * Setup update message (could contains few lines)
 * Supported placeholders:/*from  w ww. j av a  2s  . co  m*/
 * %plugin% %newversion% %oldversion% %url%
 * 
 * @param list   - String list containing message
 * if list is empty will filled with default messages
 * 
 * Example:
 *    List<String> list = new ArrayList<String>();
 *    list.add("&6%plugin% &eis outdated! Recommended version is &6v%newversion%");
 *      list.add("&ePlease download new version from BukkitDev:");
 *    list.add("&b%url%");
 *    UpdateChecker.setUpdateMessage(list);
 * 
 */
public static void setUpdateMessage(List<String> list) {
    if (list == null || list.isEmpty()) {
        updateMessages = new ArrayList<String>();
        updateMessages.add("&6%plugin% &eis outdated! Recommended version is &6v%newversion%");
        updateMessages.add("&ePlease download new version from BukkitDev:");
        updateMessages.add("&b%url%");
    } else
        updateMessages = list;
}

From source file:ca.uhn.fhir.util.OperationOutcomeUtil.java

private static String getFirstIssueStringPart(FhirContext theCtx, IBaseOperationOutcome theOutcome,
        String name) {/* w w w.  j ava  2 s  .  co m*/
    if (theOutcome == null) {
        return null;
    }

    RuntimeResourceDefinition ooDef = theCtx.getResourceDefinition(theOutcome);
    BaseRuntimeChildDefinition issueChild = ooDef.getChildByName("issue");

    List<IBase> issues = issueChild.getAccessor().getValues(theOutcome);
    if (issues.isEmpty()) {
        return null;
    }

    IBase issue = issues.get(0);
    BaseRuntimeElementCompositeDefinition<?> issueElement = (BaseRuntimeElementCompositeDefinition<?>) theCtx
            .getElementDefinition(issue.getClass());
    BaseRuntimeChildDefinition detailsChild = issueElement.getChildByName(name);

    List<IBase> details = detailsChild.getAccessor().getValues(issue);
    if (details.isEmpty()) {
        return null;
    }
    return ((IPrimitiveType<?>) details.get(0)).getValueAsString();
}