Example usage for java.util Collection isEmpty

List of usage examples for java.util Collection isEmpty

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Introduction

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

Prototype

boolean isEmpty();

Source Link

Document

Returns true if this collection contains no elements.

Usage

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

public static List<ExecutedJob> executedJobs(Collection<? extends BatchJobExecution> jobs) {
    if (jobs != null && !jobs.isEmpty()) {
        return jobs.stream().map(jobExecution -> executedJob(jobExecution)).collect(Collectors.toList());
    } else {/*  w w w  . ja v a  2  s  . c om*/
        return Collections.emptyList();
    }
}

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

public static List<ExecutedJob> executedJobsSimple(Collection<? extends BatchJobExecution> jobs) {
    if (jobs != null && !jobs.isEmpty()) {
        return jobs.stream().map(jobExecution -> executedJobSimple(jobExecution)).collect(Collectors.toList());
    } else {//  w ww. ja  va2  s.c o  m
        return Collections.emptyList();
    }
}

From source file:org.ambraproject.wombat.controller.WombatController.java

/**
 * If any validation errors from a form are present, set them up to be rendered.
 * <p>/* w  w  w .j a v a2s .  c  o  m*/
 * If this method returns {@code true}, it generally means that the calling controller should halt and render a page
 * displaying the validation messages.
 *
 * @param response             the response
 * @param model                the model
 * @param validationErrorNames attribute names for present validation errors
 * @return {@code true} if a validation error is present
 */
protected static boolean applyValidation(HttpServletResponse response, Model model,
        Collection<String> validationErrorNames) {
    if (validationErrorNames.isEmpty())
        return false;

    /*
     * Presently, it is assumed that all validation error messages in FreeMarker use a simple presence/absence check
     * with the '??' operator. The value 'true' is just a placeholder. If any validation error messages require more
     * specific values, they must be added to the model separately. Refactor this method if that happens too often.
     */
    validationErrorNames.forEach(error -> model.addAttribute(error, true));

    response.setStatus(HttpStatus.BAD_REQUEST.value());
    return true;
}

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

public static List<ExecutedStep> executedSteps(Collection<? extends BatchStepExecution> steps) {
    if (steps != null && !steps.isEmpty()) {
        return steps.stream().map(stepExecution -> executedStep(stepExecution)).collect(Collectors.toList());
    } else {//from   www.  java  2s .  co m
        return Collections.emptyList();
    }
}

From source file:grails.plugin.searchable.internal.util.GrailsDomainClassUtils.java

/**
 * Get the actual (user-defined) Classes for the given GrailsDomainClass Collection.
 * Equivalent to collecting the results of <code>grailsDomainClass.getClazz()</code> on
 * each element/* ww w .  j a  v  a  2s . c  o  m*/
 *
 * @param grailsDomainClasses
 * @return A collection of User-defined classes, which may be empty
 */
public static Collection getClazzes(Collection grailsDomainClasses) {
    if (grailsDomainClasses == null || grailsDomainClasses.isEmpty()) {
        return Collections.EMPTY_SET;
    }
    Set clazzes = new HashSet();
    for (Iterator iter = grailsDomainClasses.iterator(); iter.hasNext();) {
        clazzes.add(((GrailsDomainClass) iter.next()).getClazz());
    }
    return clazzes;
}

From source file:com.eviware.soapui.plugins.PluginProxies.java

@SuppressWarnings("unchecked")
static <T> T createProxyFor(T delegate) {

    if (delegate instanceof JComponent) {
        log.warn("Can't proxy JComponent derived classes");
        return delegate;
    }//from ww w .j a  v  a2 s .  co  m

    Collection<Class> interfaces = ClassUtils.getAllInterfaces(delegate.getClass());
    if (interfaces.isEmpty()) {
        // this shouldn't really happen, unless reflection is being used in some odd way
        log.warn("Can't proxy instance of {} because the class doesn't implement any interfaces",
                delegate.getClass());
        return delegate;
    }
    interfaces.add(PluginProxy.class);
    return (T) Proxy.newProxyInstance(PluginProxies.class.getClassLoader(),
            interfaces.toArray(new Class[interfaces.size()]), new DelegatingHandler<T>(delegate));
}

From source file:net.sourceforge.fenixedu.applicationTier.Servico.teacher.DeleteProfessorshipWithPerson.java

@Atomic
public static Boolean run(Person person, ExecutionCourse executionCourse) throws NotAuthorizedException {
    try {//  ww w . jav a 2s .co m

        final Person loggedPerson = AccessControl.getPerson();

        Professorship selectedProfessorship = null;
        selectedProfessorship = person.getProfessorshipByExecutionCourse(executionCourse);

        if ((loggedPerson == null) || (selectedProfessorship == null) || !loggedPerson.hasRole(RoleType.TEACHER)
                || isSamePersonAsBeingRemoved(loggedPerson, selectedProfessorship.getPerson())
                || selectedProfessorship.getResponsibleFor()) {
            throw new NotAuthorizedException();
        }
    } catch (RuntimeException e) {
        throw new NotAuthorizedException();
    }

    Professorship professorshipToDelete = person.getProfessorshipByExecutionCourse(executionCourse);

    Collection shiftProfessorshipList = professorshipToDelete.getAssociatedShiftProfessorshipSet();

    boolean hasCredits = false;

    if (!shiftProfessorshipList.isEmpty()) {
        hasCredits = CollectionUtils.exists(shiftProfessorshipList, new Predicate() {

            @Override
            public boolean evaluate(Object arg0) {
                ShiftProfessorship shiftProfessorship = (ShiftProfessorship) arg0;
                return shiftProfessorship.getPercentage() != null && shiftProfessorship.getPercentage() != 0;
            }
        });
    }

    if (!hasCredits && professorshipToDelete.getStudentInquiriesTeachingResultsSet().isEmpty()) {
        professorshipToDelete.delete();
    } else {
        if (hasCredits) {
            throw new DomainException("error.remove.professorship");
        }
    }
    return Boolean.TRUE;
}

From source file:gaffer.accumulo.utils.IngestUtils.java

/**
 * Get the existing splits from a table in Accumulo and write a splits file.
 * The number of splits is returned.//from  w w w.  ja  va 2  s . co  m
 * 
 * @param conn  An existing connection to an Accumulo instance
 * @param table  The table name
 * @param fs  The FileSystem in which to create the splits file
 * @param splitsFile  A path for the splits file
 * @return The number of splits in the table
 * @throws TableNotFoundException
 * @throws IOException
 */
public static int createSplitsFile(Connector conn, String table, FileSystem fs, Path splitsFile)
        throws TableNotFoundException, IOException {
    // Get the splits from the table
    Collection<Text> splits = conn.tableOperations().getSplits(table);

    // Write the splits to file
    if (splits.isEmpty()) {
        return 0;
    }
    PrintStream out = new PrintStream(new BufferedOutputStream(fs.create(splitsFile, true)));
    for (Text split : splits) {
        out.println(new String(Base64.encodeBase64(split.getBytes())));
    }
    out.close();

    return splits.size();
}

From source file:com.hengyi.japp.execution.Util.java

public static void queryCommand(CriteriaBuilder cb, CriteriaQuery<?> cq, Root<Task> root,
        TaskQueryCommand command) {/*w w  w .j av a  2  s.com*/
    Predicate p1 = cb.equal(root.get(Task_.charger), command.getOperator());
    ListJoin<Task, Operator> joinFollowers = root.join(Task_.followers, JoinType.LEFT);
    Predicate p2 = cb.equal(joinFollowers.get(Operator_.id), command.getOperator().getId());
    ListJoin<Task, Operator> joinExecutors = root.join(Task_.executors, JoinType.LEFT);
    Predicate p3 = cb.equal(joinExecutors.get(Operator_.id), command.getOperator().getId());
    Predicate p = cb.or(p1, p2, p3);
    if (command.getExecutor() != null) {
        p = cb.and(p, cb.equal(p, cb.isMember(command.getExecutor(), root.get(Task_.executors))));
    }
    if (command.getCustomer() != null) {
        p = cb.and(p, cb.equal(root.get(Task_.customer), command.getCustomer()));
    }
    if (!isBlank(command.getContent())) {
        p = cb.and(p, cb.like(root.get(Task_.content), command.getContentQuery()));
    }
    Collection<TaskType> TaskTypes = command.getTypes();
    if (TaskTypes != null && !TaskTypes.isEmpty()) {
        p = cb.and(p, root.get(Task_.type).in(TaskTypes));
    }
    Collection<TaskStatus> statuses = command.getStatuses();
    if (statuses != null && !statuses.isEmpty()) {
        p = cb.and(p, root.get(Task_.status).in(statuses));
    }
    if (command.getCreateDate() != null) {
        Date createDateStart = LocalDate.fromDateFields(command.getCreateDate()).toDate();
        Date createDateEnd = LocalDate.fromDateFields(command.getCreateDate()).plusDays(1).toDate();
        p = cb.and(p, cb.between(root.get(Task_.logInfo).get(LogInfo_.createDateTime), createDateStart,
                createDateEnd));
        // TODO timestamp date convert
        //p = cb.and(p, cb.equal(root.get(Task_.logInfo).get(LogInfo_.createDateTime).as(java.sql.Date.class), command.getCreateDate()));
    }
    cq.where(p);
}

From source file:net.landora.video.utils.UIUtils.java

public static Collection<Object> createCompleteContext(Collection<?> context) {
    if (context == null || context.isEmpty()) {
        return Collections.EMPTY_SET;
    }/*from  www.  j  ava2 s . c  om*/

    Collection<Object> result = new LinkedHashSet<Object>();
    for (Object obj : context) {
        addContentObject(obj, result);
    }
    return result;
}