Example usage for java.util ArrayList replaceAll

Introduction

In this page you can find the example usage for java.util ArrayList replaceAll.

Prototype

@Override
    public void replaceAll(UnaryOperator<E> operator) 

Source Link

Usage

From source file:de.steilerdev.myVerein.server.controller.admin.EventManagementController.java

/**
 * Returns all events, that are taking place on a specified date. The date parameter needs to be formatted according to the following pattern: YYYY/MM/DD. This function is invoked by GETting the URI /api/admin/event/date
 * @param date The selected date, correctly formatted (YYYY/MM/DD)
 * @return An HTTP response with a status code. If the function succeeds, a list of events is returned, otherwise an error code is returned.
 *//*  w  ww . j a v a  2  s . co m*/
@RequestMapping(value = "date", produces = "application/json", method = RequestMethod.GET)
public ResponseEntity<List<Event>> getEventsOfDate(@RequestParam String date, @CurrentUser User currentUser) {
    logger.trace("[" + currentUser + "] Getting events of date " + date);
    LocalDateTime startOfDay, endOfDay, startOfMonth, endOfMonth;
    ArrayList<Event> eventsOfDay = new ArrayList<>();
    try {
        // Get start of day and start of next day
        startOfDay = LocalDate.parse(date, DateTimeFormatter.ISO_LOCAL_DATE).atStartOfDay();
        endOfDay = startOfDay.plusDays(1);

        startOfMonth = LocalDate.of(startOfDay.getYear(), startOfDay.getMonth(), 1).atStartOfDay();
        endOfMonth = startOfMonth.plusMonths(1);
        logger.debug("[" + currentUser + "] Converted to date object: " + startOfDay.toString());
    } catch (DateTimeParseException e) {
        logger.warn("[" + currentUser + "] Unable to parse date: " + date + ": " + e.toString());
        return new ResponseEntity<>(HttpStatus.BAD_REQUEST);
    }

    logger.debug("Getting all single day events...");
    eventsOfDay.addAll(eventRepository.findAllByStartDateTimeBetweenAndMultiDate(startOfDay, endOfDay, false));
    logger.debug("All single day events retrieved, got " + eventsOfDay.size() + " events so far");

    logger.debug("Getting all multi day events...");
    //Collecting all multi date events, that either start or end within the selected month (which means that events that are spanning over several months are not collected)
    eventsOfDay.addAll(Stream.concat(
            eventRepository.findAllByStartDateTimeBetweenAndMultiDate(startOfMonth, endOfMonth, true).stream(), //All multi date events starting within the month
            eventRepository.findAllByEndDateTimeBetweenAndMultiDate(startOfMonth, endOfMonth, true).stream()) //All multi date events ending within the month
            .distinct() //Removing all duplicated events
            .parallel()
            .filter(event -> event.getStartDate().isEqual(startOfDay.toLocalDate())
                    || event.getEndDate().isEqual(startOfDay.toLocalDate())
                    || (event.getEndDate().isAfter(endOfDay.toLocalDate())
                            && event.getStartDate().isBefore(startOfDay.toLocalDate()))) //Filter all multi date events that do not span over the date
            .collect(Collectors.toList()));
    logger.debug("All multi day events gathered, got " + eventsOfDay.size() + " events so far");

    if (eventsOfDay.isEmpty()) {
        logger.warn("[" + currentUser + "] The events list of " + date + " is empty");
        return new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR);
    } else {
        eventsOfDay.replaceAll(Event::getSendingObjectOnlyNameTimeId);
        logger.debug("[" + currentUser + "] Returning " + eventsOfDay.size() + " events for " + date);
        return new ResponseEntity<>(eventsOfDay, HttpStatus.OK);
    }
}

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