Examples of org.goda.time.DateTime$Property

org.goda.time.DateTime
DateTime.Property binds a DateTime to a DateTimeField allowing powerful datetime functionality to be easily accessed.
The simplest use of this class is as an alternative get method, here used to get the year '1972' (as an int) and the month 'December' (as a String).
```
 DateTime dt = new DateTime(1972, 12, 3, 0, 0, 0, 0); int year = dt.year().get(); String monthStr = dt.month().getAsText(); 
```
Methods are also provided that allow date modification. These return new instances of DateTime - they do not modify the original. The example below yields two independent immutable date objects 20 years apart.
```
 DateTime dt = new DateTime(1972, 12, 3, 0, 0, 0, 0); DateTime dt20 = dt.year().addToCopy(20); 
```
Serious modification of dates (ie. more than just changing one or two fields) should use the {@link org.joda.time.MutableDateTime MutableDateTime} class.
DateTime.Propery itself is thread-safe and immutable, as well as the DateTime being operated on. @author Stephen Colebourne @author Brian S O'Neill @since 1.0

  @Override
  protected MutableInterval _nextMutableInterval(PointerType pointer) {
    if (_currentWeekStart == null) {
      if (pointer == PointerType.FUTURE) {
        RepeaterDayName sundayRepeater = new RepeaterDayName(RepeaterDayName.DayName.SUNDAY);
        sundayRepeater.setStart( new DateTime(getNow()));
        MutableInterval nextSundayMutableInterval = sundayRepeater.nextMutableInterval(Pointer.PointerType.FUTURE);
        _currentWeekStart = nextSundayMutableInterval.getStart();
      }
      else if (pointer == PointerType.PAST) {
        RepeaterDayName sundayRepeater = new RepeaterDayName(RepeaterDayName.DayName.SUNDAY);

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  }


  @Override
  protected MutableInterval _thisMutableInterval(PointerType pointer) {
    MutableInterval thisWeekMutableInterval;
    DateTime thisWeekStart;
    DateTime thisWeekEnd;
    if (pointer == PointerType.FUTURE) {
      thisWeekStart = Time.cloneAndAdd(Time.ymdh(getNow()), Time.HOUR, 1);
      RepeaterDayName sundayRepeater = new RepeaterDayName(RepeaterDayName.DayName.SUNDAY);
      sundayRepeater.setStart( new DateTime( getNow()));
      MutableInterval thisSundayMutableInterval = sundayRepeater.thisMutableInterval(Pointer.PointerType.FUTURE);
      thisWeekEnd = thisSundayMutableInterval.getStart();
      thisWeekMutableInterval = new MutableInterval(thisWeekStart, thisWeekEnd);
    }
    else if (pointer == PointerType.PAST) {
      thisWeekEnd = Time.ymdh(getNow());
      RepeaterDayName sundayRepeater = new RepeaterDayName(RepeaterDayName.DayName.SUNDAY);
      sundayRepeater.setStart( new DateTime(getNow()));
      MutableInterval lastSundayMutableInterval = sundayRepeater.nextMutableInterval(Pointer.PointerType.PAST);
      thisWeekStart = lastSundayMutableInterval.getStart();
      thisWeekMutableInterval = new MutableInterval(thisWeekStart, thisWeekEnd);
    }
    else if (pointer == PointerType.NONE) {
      RepeaterDayName sundayRepeater = new RepeaterDayName(RepeaterDayName.DayName.SUNDAY);
      sundayRepeater.setStart(new DateTime(getNow()));
      MutableInterval lastSundayMutableInterval = sundayRepeater.nextMutableInterval(Pointer.PointerType.PAST);
      thisWeekStart = lastSundayMutableInterval.getStart();
      thisWeekEnd = Time.cloneAndAdd(thisWeekStart, Time.DAY_OF_MONTH, RepeaterWeek.WEEK_DAYS);
      thisWeekMutableInterval = new MutableInterval(thisWeekStart, thisWeekEnd);
    }

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  @Override
  protected MutableInterval _nextMutableInterval(PointerType pointer) {
    if (_currentWeekStart == null) {
      if (pointer == Pointer.PointerType.FUTURE) {
        RepeaterDayName saturdayRepeater = new RepeaterDayName(RepeaterDayName.DayName.SATURDAY);
        saturdayRepeater.setStart( new DateTime(getNow()));
        MutableInterval nextSaturdayMutableInterval = saturdayRepeater.nextMutableInterval(Pointer.PointerType.FUTURE);
        _currentWeekStart = nextSaturdayMutableInterval.getStart();
      }
      else if (pointer == Pointer.PointerType.PAST) {
        RepeaterDayName saturdayRepeater = new RepeaterDayName(RepeaterDayName.DayName.SATURDAY);

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  @Override
  protected MutableInterval _thisMutableInterval(PointerType pointer) {
    MutableInterval thisMutableInterval;
    if (pointer == Pointer.PointerType.FUTURE || pointer == Pointer.PointerType.NONE) {
      RepeaterDayName saturdayRepeater = new RepeaterDayName(RepeaterDayName.DayName.SATURDAY);
      saturdayRepeater.setStart(new DateTime(getNow()));
      MutableInterval thisSaturdayMutableInterval = saturdayRepeater.nextMutableInterval(Pointer.PointerType.FUTURE);
      thisMutableInterval = new MutableInterval(thisSaturdayMutableInterval.getStart(), Time.cloneAndAdd(thisSaturdayMutableInterval.getStart(), Time.SECOND, RepeaterWeekend.WEEKEND_SECONDS));
    }
    else if (pointer == Pointer.PointerType.PAST) {
      RepeaterDayName saturdayRepeater = new RepeaterDayName(RepeaterDayName.DayName.SATURDAY);
      saturdayRepeater.setStart( new DateTime( getNow()));
      MutableInterval lastSaturdayMutableInterval = saturdayRepeater.nextMutableInterval(Pointer.PointerType.PAST);
      thisMutableInterval = new MutableInterval(lastSaturdayMutableInterval.getStart(), Time.cloneAndAdd(lastSaturdayMutableInterval.getStart(), Time.SECOND, RepeaterWeekend.WEEKEND_SECONDS));
    }
    else {
      throw new IllegalArgumentException("Unable to handle pointer " + pointer + ".");

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  @Override
  public MutableInterval getOffset(MutableInterval span, double amount, PointerType pointer) {
    int direction = (pointer == Pointer.PointerType.FUTURE) ? 1 : -1;
    RepeaterWeekend weekend = new RepeaterWeekend();
    weekend.setStart(span.getStart());
    DateTime start = Time.cloneAndAdd(weekend.nextMutableInterval(pointer).getStart(), Time.SECOND, (int) ((amount - 1) * direction * RepeaterWeek.WEEK_SECONDS));
    return new MutableInterval(start, Time.cloneAndAdd(start, Time.SECOND, Time.getWidth(span)));
  }

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            if (chrono == null) {
                if (zone == DateTimeZone.UTC) {
                    // First create without a lower limit.
                    chrono = new CopticChronology(null, null, minDaysInFirstWeek);
                    // Impose lower limit and make another CopticChronology.
                    DateTime lowerLimit = new DateTime(1, 1, 1, 0, 0, 0, 0, chrono);
                    chrono = new CopticChronology
                        (LimitChronology.getInstance(chrono, lowerLimit, null),
                         null, minDaysInFirstWeek);
                } else {
                    chrono = getInstance(DateTimeZone.UTC, minDaysInFirstWeek);

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        if (zone == DateTimeZone.UTC && iWithUTC != null) {
            return iWithUTC;
        }


        DateTime lowerLimit = iLowerLimit;
        if (lowerLimit != null) {
            MutableDateTime mdt = lowerLimit.toMutableDateTime();
            mdt.setZoneRetainFields(zone);
            lowerLimit = mdt.toDateTime();
        }


        DateTime upperLimit = iUpperLimit;
        if (upperLimit != null) {
            MutableDateTime mdt = upperLimit.toMutableDateTime();
            mdt.setZoneRetainFields(zone);
            upperLimit = mdt.toDateTime();
        }
        
        LimitChronology chrono = getInstance

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        converted.put(field, limitField);
        return limitField;
    }


    void checkLimits(long instant, String desc) {
        DateTime limit;
        if ((limit = iLowerLimit) != null && instant < limit.getMillis()) {
            throw new LimitException(desc, true);
        }
        if ((limit = iUpperLimit) != null && instant >= limit.getMillis()) {
            throw new LimitException(desc, false);
        }
    }

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            if (chrono == null) {
                if (zone == DateTimeZone.UTC) {
                    // First create without a lower limit.
                    chrono = new IslamicChronology(null, null, leapYears);
                    // Impose lower limit and make another IslamicChronology.
                    DateTime lowerLimit = new DateTime(1, 1, 1, 0, 0, 0, 0, chrono);
                    chrono = new IslamicChronology(
                        LimitChronology.getInstance(chrono, lowerLimit, null),
                         null, leapYears);
                } else {
                    chrono = getInstance(DateTimeZone.UTC, leapYears);

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            if (chrono == null) {
                if (zone == DateTimeZone.UTC) {
                    // First create without a lower limit.
                    chrono = new EthiopicChronology(null, null, minDaysInFirstWeek);
                    // Impose lower limit and make another EthiopicChronology.
                    DateTime lowerLimit = new DateTime(1, 1, 1, 0, 0, 0, 0, chrono);
                    chrono = new EthiopicChronology
                        (LimitChronology.getInstance(chrono, lowerLimit, null),
                         null, minDaysInFirstWeek);
                } else {
                    chrono = getInstance(DateTimeZone.UTC, minDaysInFirstWeek);

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