, Serializable {
- // this class is package-scoped so that future conversion to public
- // would not change serialization
-
- /**
- * Serialization version.
- */
- private static final long serialVersionUID = -305327627230580483L;
-
- /**
- * The underlying ISO local date.
- */
- private transient final LocalDate isoDate;
- /**
- * The JapaneseEra of this date.
- */
- private transient JapaneseEra era;
- /**
- * The Japanese imperial calendar year of this date.
- */
- private transient int yearOfEra;
-
- /**
- * Obtains an instance of {@code JapaneseDate} from the era, year-of-era,
- * month-of-year and day-of-month.
- *
- * @param era the era to represent, not null
- * @param yearOfEra the year-of-era to represent
- * @param month the month-of-year to represent
- * @param dayOfMonth the day-of-month to represent, from 1 to 31
- * @return the Japanese date, never null
- * @throws DateTimeException if the value of any field is out of range, or
- * if the day-of-month is invalid for the month-year
- */
- static JapaneseDate of(JapaneseEra era, int yearOfEra, int month, int dayOfMonth) {
- Objects.requireNonNull(era, "era");
- LocalGregorianCalendar.Date jdate = JapaneseChrono.JCAL.newCalendarDate(null);
- jdate.setEra(era.getPrivateEra()).setDate(yearOfEra, month, dayOfMonth);
- if (!JapaneseChrono.JCAL.validate(jdate)) {
- throw new IllegalArgumentException();
- }
- LocalDate date = LocalDate.of(jdate.getNormalizedYear(), month, dayOfMonth);
- return new JapaneseDate(era, yearOfEra, date);
- }
-
- //-----------------------------------------------------------------------
- /**
- * Creates an instance from an ISO date.
- *
- * @param isoDate the standard local date, validated not null
- */
- JapaneseDate(LocalDate isoDate) {
- LocalGregorianCalendar.Date jdate = toPrivateJapaneseDate(isoDate);
- this.era = JapaneseEra.toJapaneseEra(jdate.getEra());
- this.yearOfEra = jdate.getYear();
- this.isoDate = isoDate;
- }
-
- /**
- * Constructs a {@code JapaneseDate}. This constructor does NOT validate the given parameters,
- * and {@code era} and {@code year} must agree with {@code isoDate}.
- *
- * @param era the era, validated not null
- * @param year the year-of-era, validated
- * @param isoDate the standard local date, validated not null
- */
- JapaneseDate(JapaneseEra era, int year, LocalDate isoDate) {
- this.era = era;
- this.yearOfEra = year;
- this.isoDate = isoDate;
- }
-
- //-----------------------------------------------------------------------
- @Override
- public JapaneseChrono getChrono() {
- return JapaneseChrono.INSTANCE;
- }
-
- @Override
- public int lengthOfMonth() {
- return isoDate.lengthOfMonth();
- }
-
- @Override
- public ValueRange range(TemporalField field) {
- if (field instanceof ChronoField) {
- if (isSupported(field)) {
- ChronoField f = (ChronoField) field;
- switch (f) {
- case DAY_OF_YEAR:
- return actualRange(Calendar.DAY_OF_YEAR);
- case YEAR_OF_ERA:
- return actualRange(Calendar.YEAR);
- }
- return getChrono().range(f);
- }
- throw new DateTimeException("Unsupported field: " + field.getName());
- }
- return field.doRange(this);
- }
-
- private ValueRange actualRange(int calendarField) {
- Calendar jcal = Calendar.getInstance(JapaneseChrono.LOCALE);
- jcal.set(Calendar.ERA, era.getValue() + JapaneseEra.ERA_OFFSET);
- jcal.set(yearOfEra, isoDate.getMonthValue() - 1, isoDate.getDayOfMonth());
- return ValueRange.of(jcal.getActualMinimum(calendarField),
- jcal.getActualMaximum(calendarField));
- }
-
- @Override
- public long getLong(TemporalField field) {
- if (field instanceof ChronoField) {
- switch ((ChronoField) field) {
- case YEAR_OF_ERA:
- return yearOfEra;
- case ERA:
- return era.getValue();
- case DAY_OF_YEAR: {
- LocalGregorianCalendar.Date jdate = toPrivateJapaneseDate(isoDate);
- return JapaneseChrono.JCAL.getDayOfYear(jdate);
- }
- }
- // TODO: review other fields
- return isoDate.getLong(field);
- }
- return field.doGet(this);
- }
-
- /**
- * Returns a {@code LocalGregorianCalendar.Date} converted from the given {@code isoDate}.
- *
- * @param isoDate the local date, not null
- * @return a {@code LocalGregorianCalendar.Date}, not null
- */
- private static LocalGregorianCalendar.Date toPrivateJapaneseDate(LocalDate isoDate) {
- LocalGregorianCalendar.Date jdate = JapaneseChrono.JCAL.newCalendarDate(null);
- sun.util.calendar.Era sunEra = JapaneseEra.privateEraFrom(isoDate);
- int year = isoDate.getYear();
- if (sunEra != null) {
- year -= sunEra.getSinceDate().getYear() - 1;
- }
- jdate.setEra(sunEra).setYear(year).setMonth(isoDate.getMonthValue()).setDayOfMonth(isoDate.getDayOfMonth());
- JapaneseChrono.JCAL.normalize(jdate);
- return jdate;
- }
-
- //-----------------------------------------------------------------------
- @Override
- public JapaneseDate with(TemporalField field, long newValue) {
- if (field instanceof ChronoField) {
- ChronoField f = (ChronoField) field;
- if (getLong(f) == newValue) {
- return this;
- }
- switch (f) {
- case YEAR_OF_ERA:
- case YEAR:
- case ERA: {
- f.checkValidValue(newValue);
- int nvalue = (int) newValue;
- switch (f) {
- case YEAR_OF_ERA:
- return this.withYear(nvalue);
- case YEAR:
- return with(isoDate.withYear(nvalue));
- case ERA: {
- return this.withYear(JapaneseEra.of(nvalue), yearOfEra);
- }
- }
- }
- }
- // TODO: review other fields, such as WEEK_OF_YEAR
- return with(isoDate.with(field, newValue));
- }
- return (JapaneseDate) ChronoLocalDate.super.with(field, newValue);
- }
-
- //-----------------------------------------------------------------------
- /**
- * Returns a copy of this date with the year altered.
- *
- * This method changes the year of the date.
- * If the month-day is invalid for the year, then the previous valid day
- * will be selected instead.
- *
- * This instance is immutable and unaffected by this method call.
- *
- * @param era the era to set in the result, not null
- * @param yearOfEra the year-of-era to set in the returned date
- * @return a {@code JapaneseDate} based on this date with the requested year, never null
- * @throws DateTimeException if {@code year} is invalid
- */
- private JapaneseDate withYear(JapaneseEra era, int yearOfEra) {
- int year = JapaneseChrono.INSTANCE.prolepticYear(era, yearOfEra);
- return with(isoDate.withYear(year));
- }
-
- /**
- * Returns a copy of this date with the year-of-era altered.
- *
- * This method changes the year-of-era of the date.
- * If the month-day is invalid for the year, then the previous valid day
- * will be selected instead.
- *
- * This instance is immutable and unaffected by this method call.
- *
- * @param year the year to set in the returned date
- * @return a {@code JapaneseDate} based on this date with the requested year-of-era, never null
- * @throws DateTimeException if {@code year} is invalid
- */
- private JapaneseDate withYear(int year) {
- return withYear((JapaneseEra) getEra(), year);
- }
-
- //-----------------------------------------------------------------------
- @Override
- JapaneseDate plusYears(long years) {
- return with(isoDate.plusYears(years));
- }
-
- @Override
- JapaneseDate plusMonths(long months) {
- return with(isoDate.plusMonths(months));
- }
-
- @Override
- JapaneseDate plusDays(long days) {
- return with(isoDate.plusDays(days));
- }
-
- private JapaneseDate with(LocalDate newDate) {
- return (newDate.equals(isoDate) ? this : new JapaneseDate(newDate));
- }
-
- @Override // override for performance
- public long toEpochDay() {
- return isoDate.toEpochDay();
- }
-
- //-------------------------------------------------------------------------
- @Override // override for performance
- public boolean equals(Object obj) {
- if (this == obj) {
- return true;
- }
- if (obj instanceof JapaneseDate) {
- JapaneseDate otherDate = (JapaneseDate) obj;
- return this.isoDate.equals(otherDate.isoDate);
- }
- return false;
- }
-
- @Override // override for performance
- public int hashCode() {
- return getChrono().getId().hashCode() ^ isoDate.hashCode();
- }
-
- @Override
- public String toString() {
- if (era == JapaneseEra.SEIREKI) {
- return getChrono().getId() + " " + isoDate.toString();
- }
- return super.toString();
- }
-
- //-----------------------------------------------------------------------
- private Object writeReplace() {
- return new Ser(Ser.JAPANESE_DATE_TYPE, this);
- }
-
- void writeExternal(DataOutput out) throws IOException {
- // JapaneseChrono is implicit in the JAPANESE_DATE_TYPE
- out.writeInt(get(YEAR));
- out.writeByte(get(MONTH_OF_YEAR));
- out.writeByte(get(DAY_OF_MONTH));
- }
-
- static ChronoLocalDate readExternal(DataInput in) throws IOException {
- int year = in.readInt();
- int month = in.readByte();
- int dayOfMonth = in.readByte();
- return JapaneseChrono.INSTANCE.date(year, month, dayOfMonth);
- }
-
-
-}