Example usage for java.time LocalDate plusMonths

Introduction

In this page you can find the example usage for java.time LocalDate plusMonths.

Prototype

public LocalDate plusMonths(long monthsToAdd) 

Source Link

Document

Returns a copy of this LocalDate with the specified number of months added.

Usage

From source file:org.silverpeas.core.webapi.calendar.CalendarWebManager.java

/**
 * Gets the next event occurrences from now.
 * @param componentIds identifiers of aimed component instance.
 * @param calendarIdsToExclude identifier of calendars which linked occurrences must be excluded
 * from the result./* w  w w. j  a  v a  2s .c om*/
 * @param usersToInclude identifiers of users which linked occurrences must be included into the
 * result
 * @param calendarIdsToInclude identifier of calendars which linked occurrences must be included
 * into the result.
 * @param zoneId the identifier of the zone.
 * @param limit the maximum occurrences the result must have (must be lower than 500)
 * @return a list of {@link CalendarEventOccurrence}.
 */
public Stream<CalendarEventOccurrence> getNextEventOccurrences(final List<String> componentIds,
        final Set<String> calendarIdsToExclude, final Set<User> usersToInclude,
        final Set<String> calendarIdsToInclude, final ZoneId zoneId, final Integer limit) {
    final User currentRequester = User.getCurrentRequester();
    // load calendars
    final List<Calendar> calendars = componentIds.stream().flatMap(i -> getCalendarsHandledBy(i).stream())
            .distinct().collect(Collectors.toList());
    // includes/excludes
    calendarIdsToInclude.removeAll(calendarIdsToExclude);
    calendars.removeIf(c -> calendarIdsToExclude.contains(c.getId()));
    if (!calendarIdsToInclude.isEmpty()) {
        calendars.forEach(c -> calendarIdsToInclude.remove(c.getId()));
        calendarIdsToInclude.forEach(i -> {
            Calendar calendarToInclude = Calendar.getById(i);
            if (calendarToInclude.canBeAccessedBy(currentRequester)) {
                calendars.add(calendarToInclude);
            }
        });
    }
    // loading occurrences
    final int nbOccLimit = (limit != null && limit > 0 && limit <= 500) ? limit : DEFAULT_NB_MAX_NEXT_OCC;
    final LocalDate startDate = zoneId != null ? LocalDateTime.now(zoneId).toLocalDate() : LocalDate.now();
    final Set<CalendarEventOccurrence> occurrences = new HashSet<>();
    for (int nbMonthsToAdd : getNextEventTimeWindows()) {
        occurrences.clear();
        LocalDate endDate = startDate.plusMonths(nbMonthsToAdd);
        occurrences.addAll(getEventOccurrencesOf(startDate, endDate, calendars));
        if (!usersToInclude.isEmpty()) {
            getAllEventOccurrencesByUserIds(Pair.of(componentIds, currentRequester), startDate, endDate,
                    usersToInclude).forEach((u, o) -> occurrences.addAll(o));
        }
        if (occurrences.size() >= nbOccLimit) {
            break;
        }
    }
    return occurrences.stream().sorted(COMPARATOR_BY_DATE_ASC).limit(nbOccLimit);
}

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