Java LocalDateTime.isEqual方法代碼示例

import java.time.LocalDateTime; //導入方法依賴的package包/類
private void calculateTimestampRanges() {
    LocalDateTime endTime = chronoSeries.getEndLocalDateTime();
    LocalDateTime itrTime = chronoSeries.getBeginLocalDateTime();

    logger.debug("Starting range determine loop");
    while (searchRange && (itrTime.isEqual(endTime) || itrTime.isBefore(endTime))) {
        for (ChronoPattern chronoPattern : chronoPatternSeq) {
            if (tempSkipUnit != null && chronoPattern != smallestPattern
                    && chronoPattern.getChronoScaleUnit().getChronoUnit() == tempSkipUnit.getChronoUnit()) {
                continue;
            } else {
                tempSkipUnit = null;
            }

            LocalDateTime startItrTime = itrTime;
            logger.trace("Start itrTime: " + startItrTime);
            itrTime = progressTime(endTime, itrTime, chronoPattern);
            logger.trace("End itrTime: " + itrTime);
        }
    }
    logger.debug("Finished range determine loop");

    if (patternStartLocalDateTime != null && patternStartLocalDateTime.isBefore(chronoSeries.getBeginLocalDateTime())) {
        patternStartLocalDateTime = chronoSeries.getBeginLocalDateTime();
    }
    if (patternEndLocalDateTime != null && patternEndLocalDateTime.isAfter(chronoSeries.getEndLocalDateTime())) {
        patternEndLocalDateTime = chronoSeries.getEndLocalDateTime();
    }

    for (Instant[] instants : timestampRanges) {
        rangeDuration = rangeDuration.plus(Duration.between(instants[0], instants[1]));
    }
    logger.debug("Range duration: " + rangeDuration);
}
 

import java.time.LocalDateTime; //導入方法依賴的package包/類
private List<LocalDateTime> createTickValues(final double WIDTH, final LocalDateTime START, final LocalDateTime END) {
    List<LocalDateTime> dateList = new ArrayList<>();
    LocalDateTime       dateTime = LocalDateTime.now();

    if (null == START || null == END) return dateList;

    // The preferred gap which should be between two tick marks.
    double majorTickSpace = 100;
    double noOfTicks      = WIDTH / majorTickSpace;

    List<LocalDateTime> previousDateList = new ArrayList<>();
    Interval            previousInterval = Interval.values()[0];

    // Starting with the greatest interval, add one of each dateTime unit.
    for (Interval interval : Interval.values()) {
        // Reset the dateTime.
        dateTime = LocalDateTime.of(START.toLocalDate(), START.toLocalTime());
        // Clear the list.
        dateList.clear();
        previousDateList.clear();
        currentInterval = interval;

        // Loop as long we exceeded the END bound.
        while(dateTime.isBefore(END)) {
            dateList.add(dateTime);
            dateTime = dateTime.plus(interval.getAmount(), interval.getInterval());
        }

        // Then check the size of the list. If it is greater than the amount of ticks, take that list.
        if (dateList.size() > noOfTicks) {
            dateTime = LocalDateTime.of(START.toLocalDate(), START.toLocalTime());
            // Recheck if the previous interval is better suited.
            while(dateTime.isBefore(END) || dateTime.isEqual(END)) {
                previousDateList.add(dateTime);
                dateTime = dateTime.plus(previousInterval.getAmount(), previousInterval.getInterval());
            }
            break;
        }

        previousInterval = interval;
    }
    if (previousDateList.size() - noOfTicks > noOfTicks - dateList.size()) {
        dateList = previousDateList;
        currentInterval = previousInterval;
    }

    // At last add the END bound.
    dateList.add(END);

    List<LocalDateTime> evenDateList = makeDatesEven(dateList, dateTime);
    // If there are at least three dates, check if the gap between the START date and the second date is at least half the gap of the second and third date.
    // Do the same for the END bound.
    // If gaps between dates are to small, remove one of them.
    // This can occur, e.g. if the START bound is 25.12.2013 and years are shown. Then the next year shown would be 2014 (01.01.2014) which would be too narrow to 25.12.2013.
    if (evenDateList.size() > 2) {
        LocalDateTime secondDate       = evenDateList.get(1);
        LocalDateTime thirdDate        = evenDateList.get(2);
        LocalDateTime lastDate         = evenDateList.get(dateList.size() - 2);
        LocalDateTime previousLastDate = evenDateList.get(dateList.size() - 3);

        // If the second date is too near by the START bound, remove it.
        if (secondDate.toEpochSecond(ZoneOffset.ofHours(0)) - START.toEpochSecond(ZoneOffset.ofHours(0)) < thirdDate.toEpochSecond(ZoneOffset.ofHours(0)) - secondDate.toEpochSecond(ZoneOffset.ofHours(0))) {
            evenDateList.remove(secondDate);
        }

        // If difference from the END bound to the last date is less than the half of the difference of the previous two dates,
        // we better remove the last date, as it comes to close to the END bound.
        if (END.toEpochSecond(ZoneOffset.ofHours(0)) - lastDate.toEpochSecond(ZoneOffset.ofHours(0)) < ((lastDate.toEpochSecond(ZoneOffset.ofHours(0)) - previousLastDate.toEpochSecond(ZoneOffset.ofHours(0)) * 0.5))) {
            evenDateList.remove(lastDate);
        }
    }
    return evenDateList;
}