1 /* 2 * Copyright (c) 2005, 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package java.util; 27 28 import java.io.IOException; 29 import java.io.ObjectInputStream; 30 import sun.util.locale.provider.CalendarDataUtility; 31 import sun.util.calendar.BaseCalendar; 32 import sun.util.calendar.CalendarDate; 33 import sun.util.calendar.CalendarSystem; 34 import sun.util.calendar.CalendarUtils; 35 import sun.util.calendar.Era; 36 import sun.util.calendar.Gregorian; 37 import sun.util.calendar.LocalGregorianCalendar; 38 import sun.util.calendar.ZoneInfo; 39 40 /** 41 * {@code JapaneseImperialCalendar} implements a Japanese 42 * calendar system in which the imperial era-based year numbering is 43 * supported from the Meiji era. The following are the eras supported 44 * by this calendar system. 45 * <pre>{@code 46 * ERA value Era name Since (in Gregorian) 47 * ------------------------------------------------------ 48 * 0 N/A N/A 49 * 1 Meiji 1868-01-01T00:00:00 local time 50 * 2 Taisho 1912-07-30T00:00:00 local time 51 * 3 Showa 1926-12-25T00:00:00 local time 52 * 4 Heisei 1989-01-08T00:00:00 local time 53 * 5 NewEra 2019-05-01T00:00:00 local time 54 * ------------------------------------------------------ 55 * }</pre> 56 * 57 * <p>{@code ERA} value 0 specifies the years before Meiji and 58 * the Gregorian year values are used. Unlike 59 * {@link GregorianCalendar}, the Julian to Gregorian transition is not 60 * supported because it doesn't make any sense to the Japanese 61 * calendar systems used before Meiji. To represent the years before 62 * Gregorian year 1, 0 and negative values are used. The Japanese 63 * Imperial rescripts and government decrees don't specify how to deal 64 * with time differences for applying the era transitions. This 65 * calendar implementation assumes local time for all transitions. 66 * 67 * <p>A new era can be specified using property 68 * jdk.calendar.japanese.supplemental.era. The new era is added to the 69 * predefined eras. The syntax of the property is as follows. 70 * <pre> 71 * {@code name=<name>,abbr=<abbr>,since=<time['u']>} 72 * </pre> 73 * where 74 * <dl> 75 * <dt>{@code <name>:}<dd>the full name of the new era (non-ASCII characters allowed, 76 * either in platform's native encoding or in Unicode escape notation, {@code \\uXXXX}) 77 * <dt>{@code <abbr>:}<dd>the abbreviation of the new era (non-ASCII characters allowed, 78 * either in platform's native encoding or in Unicode escape notation, {@code \\uXXXX}) 79 * <dt>{@code <time['u']>:}<dd>the start time of the new era represented by 80 * milliseconds from 1970-01-01T00:00:00 local time or UTC if {@code 'u'} is 81 * appended to the milliseconds value. (ASCII digits only) 82 * </dl> 83 * 84 * <p>If the given era is invalid, such as the since value before the 85 * beginning of the last predefined era, the given era will be 86 * ignored. 87 * 88 * <p>The following is an example of the property usage. 89 * <pre> 90 * java -Djdk.calendar.japanese.supplemental.era="name=NewEra,abbr=N,since=253374307200000" 91 * </pre> 92 * The property specifies an era change to NewEra at 9999-02-11T00:00:00 local time. 93 * 94 * @author Masayoshi Okutsu 95 * @since 1.6 96 */ 97 class JapaneseImperialCalendar extends Calendar { 98 /* 99 * Implementation Notes 100 * 101 * This implementation uses 102 * sun.util.calendar.LocalGregorianCalendar to perform most of the 103 * calendar calculations. 104 */ 105 106 /** 107 * The ERA constant designating the era before Meiji. 108 */ 109 public static final int BEFORE_MEIJI = 0; 110 111 /** 112 * The ERA constant designating the Meiji era. 113 */ 114 public static final int MEIJI = 1; 115 116 /** 117 * The ERA constant designating the Taisho era. 118 */ 119 public static final int TAISHO = 2; 120 121 /** 122 * The ERA constant designating the Showa era. 123 */ 124 public static final int SHOWA = 3; 125 126 /** 127 * The ERA constant designating the Heisei era. 128 */ 129 public static final int HEISEI = 4; 130 131 /** 132 * The ERA constant designating the NewEra era. 133 */ 134 private static final int NEWERA = 5; 135 136 private static final int EPOCH_OFFSET = 719163; // Fixed date of January 1, 1970 (Gregorian) 137 138 // Useful millisecond constants. Although ONE_DAY and ONE_WEEK can fit 139 // into ints, they must be longs in order to prevent arithmetic overflow 140 // when performing (bug 4173516). 141 private static final int ONE_SECOND = 1000; 142 private static final int ONE_MINUTE = 60*ONE_SECOND; 143 private static final int ONE_HOUR = 60*ONE_MINUTE; 144 private static final long ONE_DAY = 24*ONE_HOUR; 145 146 // Reference to the sun.util.calendar.LocalGregorianCalendar instance (singleton). 147 private static final LocalGregorianCalendar jcal 148 = (LocalGregorianCalendar) CalendarSystem.forName("japanese"); 149 150 // Gregorian calendar instance. This is required because era 151 // transition dates are given in Gregorian dates. 152 private static final Gregorian gcal = CalendarSystem.getGregorianCalendar(); 153 154 // The Era instance representing "before Meiji". 155 private static final Era BEFORE_MEIJI_ERA = new Era("BeforeMeiji", "BM", Long.MIN_VALUE, false); 156 157 // Imperial eras. The sun.util.calendar.LocalGregorianCalendar 158 // doesn't have an Era representing before Meiji, which is 159 // inconvenient for a Calendar. So, era[0] is a reference to 160 // BEFORE_MEIJI_ERA. 161 private static final Era[] eras; 162 163 // Fixed date of the first date of each era. 164 private static final long[] sinceFixedDates; 165 166 // The current era 167 private static final int currentEra; 168 169 /* 170 * <pre> 171 * Greatest Least 172 * Field name Minimum Minimum Maximum Maximum 173 * ---------- ------- ------- ------- ------- 174 * ERA 0 0 1 1 175 * YEAR -292275055 1 ? ? 176 * MONTH 0 0 11 11 177 * WEEK_OF_YEAR 1 1 52* 53 178 * WEEK_OF_MONTH 0 0 4* 6 179 * DAY_OF_MONTH 1 1 28* 31 180 * DAY_OF_YEAR 1 1 365* 366 181 * DAY_OF_WEEK 1 1 7 7 182 * DAY_OF_WEEK_IN_MONTH -1 -1 4* 6 183 * AM_PM 0 0 1 1 184 * HOUR 0 0 11 11 185 * HOUR_OF_DAY 0 0 23 23 186 * MINUTE 0 0 59 59 187 * SECOND 0 0 59 59 188 * MILLISECOND 0 0 999 999 189 * ZONE_OFFSET -13:00 -13:00 14:00 14:00 190 * DST_OFFSET 0:00 0:00 0:20 2:00 191 * </pre> 192 * *: depends on eras 193 */ 194 static final int MIN_VALUES[] = { 195 0, // ERA 196 -292275055, // YEAR 197 JANUARY, // MONTH 198 1, // WEEK_OF_YEAR 199 0, // WEEK_OF_MONTH 200 1, // DAY_OF_MONTH 201 1, // DAY_OF_YEAR 202 SUNDAY, // DAY_OF_WEEK 203 1, // DAY_OF_WEEK_IN_MONTH 204 AM, // AM_PM 205 0, // HOUR 206 0, // HOUR_OF_DAY 207 0, // MINUTE 208 0, // SECOND 209 0, // MILLISECOND 210 -13*ONE_HOUR, // ZONE_OFFSET (UNIX compatibility) 211 0 // DST_OFFSET 212 }; 213 static final int LEAST_MAX_VALUES[] = { 214 0, // ERA (initialized later) 215 0, // YEAR (initialized later) 216 JANUARY, // MONTH (Showa 64 ended in January.) 217 0, // WEEK_OF_YEAR (Showa 1 has only 6 days which could be 0 weeks.) 218 4, // WEEK_OF_MONTH 219 28, // DAY_OF_MONTH 220 0, // DAY_OF_YEAR (initialized later) 221 SATURDAY, // DAY_OF_WEEK 222 4, // DAY_OF_WEEK_IN 223 PM, // AM_PM 224 11, // HOUR 225 23, // HOUR_OF_DAY 226 59, // MINUTE 227 59, // SECOND 228 999, // MILLISECOND 229 14*ONE_HOUR, // ZONE_OFFSET 230 20*ONE_MINUTE // DST_OFFSET (historical least maximum) 231 }; 232 static final int MAX_VALUES[] = { 233 0, // ERA 234 292278994, // YEAR 235 DECEMBER, // MONTH 236 53, // WEEK_OF_YEAR 237 6, // WEEK_OF_MONTH 238 31, // DAY_OF_MONTH 239 366, // DAY_OF_YEAR 240 SATURDAY, // DAY_OF_WEEK 241 6, // DAY_OF_WEEK_IN 242 PM, // AM_PM 243 11, // HOUR 244 23, // HOUR_OF_DAY 245 59, // MINUTE 246 59, // SECOND 247 999, // MILLISECOND 248 14*ONE_HOUR, // ZONE_OFFSET 249 2*ONE_HOUR // DST_OFFSET (double summer time) 250 }; 251 252 // Proclaim serialization compatibility with JDK 1.6 253 @SuppressWarnings("FieldNameHidesFieldInSuperclass") 254 private static final long serialVersionUID = -3364572813905467929L; 255 256 static { 257 Era[] es = jcal.getEras(); 258 int length = es.length + 1; 259 eras = new Era[length]; 260 sinceFixedDates = new long[length]; 261 262 // eras[BEFORE_MEIJI] and sinceFixedDate[BEFORE_MEIJI] are the 263 // same as Gregorian. 264 int index = BEFORE_MEIJI; 265 int current = index; 266 sinceFixedDates[index] = gcal.getFixedDate(BEFORE_MEIJI_ERA.getSinceDate()); 267 eras[index++] = BEFORE_MEIJI_ERA; 268 for (Era e : es) { 269 if(e.getSince(TimeZone.NO_TIMEZONE) < System.currentTimeMillis()) { 270 current = index; 271 } 272 CalendarDate d = e.getSinceDate(); 273 sinceFixedDates[index] = gcal.getFixedDate(d); 274 eras[index++] = e; 275 } 276 currentEra = current; 277 278 LEAST_MAX_VALUES[ERA] = MAX_VALUES[ERA] = eras.length - 1; 279 280 // Calculate the least maximum year and least day of Year 281 // values. The following code assumes that there's at most one 282 // era transition in a Gregorian year. 283 int year = Integer.MAX_VALUE; 284 int dayOfYear = Integer.MAX_VALUE; 285 CalendarDate date = gcal.newCalendarDate(TimeZone.NO_TIMEZONE); 286 for (int i = 1; i < eras.length; i++) { 287 long fd = sinceFixedDates[i]; 288 CalendarDate transitionDate = eras[i].getSinceDate(); 289 date.setDate(transitionDate.getYear(), BaseCalendar.JANUARY, 1); 290 long fdd = gcal.getFixedDate(date); 291 if (fd != fdd) { 292 dayOfYear = Math.min((int)(fd - fdd) + 1, dayOfYear); 293 } 294 date.setDate(transitionDate.getYear(), BaseCalendar.DECEMBER, 31); 295 fdd = gcal.getFixedDate(date); 296 if (fd != fdd) { 297 dayOfYear = Math.min((int)(fdd - fd) + 1, dayOfYear); 298 } 299 LocalGregorianCalendar.Date lgd = getCalendarDate(fd - 1); 300 int y = lgd.getYear(); 301 // Unless the first year starts from January 1, the actual 302 // max value could be one year short. For example, if it's 303 // Showa 63 January 8, 63 is the actual max value since 304 // Showa 64 January 8 doesn't exist. 305 if (!(lgd.getMonth() == BaseCalendar.JANUARY && lgd.getDayOfMonth() == 1)) { 306 y--; 307 } 308 year = Math.min(y, year); 309 } 310 LEAST_MAX_VALUES[YEAR] = year; // Max year could be smaller than this value. 311 LEAST_MAX_VALUES[DAY_OF_YEAR] = dayOfYear; 312 } 313 314 /** 315 * jdate always has a sun.util.calendar.LocalGregorianCalendar.Date instance to 316 * avoid overhead of creating it for each calculation. 317 */ 318 private transient LocalGregorianCalendar.Date jdate; 319 320 /** 321 * Temporary int[2] to get time zone offsets. zoneOffsets[0] gets 322 * the GMT offset value and zoneOffsets[1] gets the daylight saving 323 * value. 324 */ 325 private transient int[] zoneOffsets; 326 327 /** 328 * Temporary storage for saving original fields[] values in 329 * non-lenient mode. 330 */ 331 private transient int[] originalFields; 332 333 /** 334 * Constructs a {@code JapaneseImperialCalendar} based on the current time 335 * in the given time zone with the given locale. 336 * 337 * @param zone the given time zone. 338 * @param aLocale the given locale. 339 */ 340 JapaneseImperialCalendar(TimeZone zone, Locale aLocale) { 341 super(zone, aLocale); 342 jdate = jcal.newCalendarDate(zone); 343 setTimeInMillis(System.currentTimeMillis()); 344 } 345 346 /** 347 * Constructs an "empty" {@code JapaneseImperialCalendar}. 348 * 349 * @param zone the given time zone 350 * @param aLocale the given locale 351 * @param flag the flag requesting an empty instance 352 */ 353 JapaneseImperialCalendar(TimeZone zone, Locale aLocale, boolean flag) { 354 super(zone, aLocale); 355 jdate = jcal.newCalendarDate(zone); 356 } 357 358 /** 359 * Returns {@code "japanese"} as the calendar type of this {@code 360 * JapaneseImperialCalendar}. 361 * 362 * @return {@code "japanese"} 363 */ 364 @Override 365 public String getCalendarType() { 366 return "japanese"; 367 } 368 369 /** 370 * Compares this {@code JapaneseImperialCalendar} to the specified 371 * {@code Object}. The result is {@code true} if and 372 * only if the argument is a {@code JapaneseImperialCalendar} object 373 * that represents the same time value (millisecond offset from 374 * the <a href="Calendar.html#Epoch">Epoch</a>) under the same 375 * {@code Calendar} parameters. 376 * 377 * @param obj the object to compare with. 378 * @return {@code true} if this object is equal to {@code obj}; 379 * {@code false} otherwise. 380 * @see Calendar#compareTo(Calendar) 381 */ 382 @Override 383 public boolean equals(Object obj) { 384 return obj instanceof JapaneseImperialCalendar && 385 super.equals(obj); 386 } 387 388 /** 389 * Generates the hash code for this 390 * {@code JapaneseImperialCalendar} object. 391 */ 392 @Override 393 public int hashCode() { 394 return super.hashCode() ^ jdate.hashCode(); 395 } 396 397 /** 398 * Adds the specified (signed) amount of time to the given calendar field, 399 * based on the calendar's rules. 400 * 401 * <p><em>Add rule 1</em>. The value of {@code field} 402 * after the call minus the value of {@code field} before the 403 * call is {@code amount}, modulo any overflow that has occurred in 404 * {@code field}. Overflow occurs when a field value exceeds its 405 * range and, as a result, the next larger field is incremented or 406 * decremented and the field value is adjusted back into its range.</p> 407 * 408 * <p><em>Add rule 2</em>. If a smaller field is expected to be 409 * invariant, but it is impossible for it to be equal to its 410 * prior value because of changes in its minimum or maximum after 411 * {@code field} is changed, then its value is adjusted to be as close 412 * as possible to its expected value. A smaller field represents a 413 * smaller unit of time. {@code HOUR} is a smaller field than 414 * {@code DAY_OF_MONTH}. No adjustment is made to smaller fields 415 * that are not expected to be invariant. The calendar system 416 * determines what fields are expected to be invariant.</p> 417 * 418 * @param field the calendar field. 419 * @param amount the amount of date or time to be added to the field. 420 * @exception IllegalArgumentException if {@code field} is 421 * {@code ZONE_OFFSET}, {@code DST_OFFSET}, or unknown, 422 * or if any calendar fields have out-of-range values in 423 * non-lenient mode. 424 */ 425 @Override 426 public void add(int field, int amount) { 427 // If amount == 0, do nothing even the given field is out of 428 // range. This is tested by JCK. 429 if (amount == 0) { 430 return; // Do nothing! 431 } 432 433 if (field < 0 || field >= ZONE_OFFSET) { 434 throw new IllegalArgumentException(); 435 } 436 437 // Sync the time and calendar fields. 438 complete(); 439 440 if (field == YEAR) { 441 LocalGregorianCalendar.Date d = (LocalGregorianCalendar.Date) jdate.clone(); 442 d.addYear(amount); 443 pinDayOfMonth(d); 444 set(ERA, getEraIndex(d)); 445 set(YEAR, d.getYear()); 446 set(MONTH, d.getMonth() - 1); 447 set(DAY_OF_MONTH, d.getDayOfMonth()); 448 } else if (field == MONTH) { 449 LocalGregorianCalendar.Date d = (LocalGregorianCalendar.Date) jdate.clone(); 450 d.addMonth(amount); 451 pinDayOfMonth(d); 452 set(ERA, getEraIndex(d)); 453 set(YEAR, d.getYear()); 454 set(MONTH, d.getMonth() - 1); 455 set(DAY_OF_MONTH, d.getDayOfMonth()); 456 } else if (field == ERA) { 457 int era = internalGet(ERA) + amount; 458 if (era < 0) { 459 era = 0; 460 } else if (era > eras.length - 1) { 461 era = eras.length - 1; 462 } 463 set(ERA, era); 464 } else { 465 long delta = amount; 466 long timeOfDay = 0; 467 switch (field) { 468 // Handle the time fields here. Convert the given 469 // amount to milliseconds and call setTimeInMillis. 470 case HOUR: 471 case HOUR_OF_DAY: 472 delta *= 60 * 60 * 1000; // hours to milliseconds 473 break; 474 475 case MINUTE: 476 delta *= 60 * 1000; // minutes to milliseconds 477 break; 478 479 case SECOND: 480 delta *= 1000; // seconds to milliseconds 481 break; 482 483 case MILLISECOND: 484 break; 485 486 // Handle week, day and AM_PM fields which involves 487 // time zone offset change adjustment. Convert the 488 // given amount to the number of days. 489 case WEEK_OF_YEAR: 490 case WEEK_OF_MONTH: 491 case DAY_OF_WEEK_IN_MONTH: 492 delta *= 7; 493 break; 494 495 case DAY_OF_MONTH: // synonym of DATE 496 case DAY_OF_YEAR: 497 case DAY_OF_WEEK: 498 break; 499 500 case AM_PM: 501 // Convert the amount to the number of days (delta) 502 // and +12 or -12 hours (timeOfDay). 503 delta = amount / 2; 504 timeOfDay = 12 * (amount % 2); 505 break; 506 } 507 508 // The time fields don't require time zone offset change 509 // adjustment. 510 if (field >= HOUR) { 511 setTimeInMillis(time + delta); 512 return; 513 } 514 515 // The rest of the fields (week, day or AM_PM fields) 516 // require time zone offset (both GMT and DST) change 517 // adjustment. 518 519 // Translate the current time to the fixed date and time 520 // of the day. 521 long fd = cachedFixedDate; 522 timeOfDay += internalGet(HOUR_OF_DAY); 523 timeOfDay *= 60; 524 timeOfDay += internalGet(MINUTE); 525 timeOfDay *= 60; 526 timeOfDay += internalGet(SECOND); 527 timeOfDay *= 1000; 528 timeOfDay += internalGet(MILLISECOND); 529 if (timeOfDay >= ONE_DAY) { 530 fd++; 531 timeOfDay -= ONE_DAY; 532 } else if (timeOfDay < 0) { 533 fd--; 534 timeOfDay += ONE_DAY; 535 } 536 537 fd += delta; // fd is the expected fixed date after the calculation 538 int zoneOffset = internalGet(ZONE_OFFSET) + internalGet(DST_OFFSET); 539 setTimeInMillis((fd - EPOCH_OFFSET) * ONE_DAY + timeOfDay - zoneOffset); 540 zoneOffset -= internalGet(ZONE_OFFSET) + internalGet(DST_OFFSET); 541 // If the time zone offset has changed, then adjust the difference. 542 if (zoneOffset != 0) { 543 setTimeInMillis(time + zoneOffset); 544 long fd2 = cachedFixedDate; 545 // If the adjustment has changed the date, then take 546 // the previous one. 547 if (fd2 != fd) { 548 setTimeInMillis(time - zoneOffset); 549 } 550 } 551 } 552 } 553 554 @Override 555 public void roll(int field, boolean up) { 556 roll(field, up ? +1 : -1); 557 } 558 559 /** 560 * Adds a signed amount to the specified calendar field without changing larger fields. 561 * A negative roll amount means to subtract from field without changing 562 * larger fields. If the specified amount is 0, this method performs nothing. 563 * 564 * <p>This method calls {@link #complete()} before adding the 565 * amount so that all the calendar fields are normalized. If there 566 * is any calendar field having an out-of-range value in non-lenient mode, then an 567 * {@code IllegalArgumentException} is thrown. 568 * 569 * @param field the calendar field. 570 * @param amount the signed amount to add to {@code field}. 571 * @exception IllegalArgumentException if {@code field} is 572 * {@code ZONE_OFFSET}, {@code DST_OFFSET}, or unknown, 573 * or if any calendar fields have out-of-range values in 574 * non-lenient mode. 575 * @see #roll(int,boolean) 576 * @see #add(int,int) 577 * @see #set(int,int) 578 */ 579 @Override 580 public void roll(int field, int amount) { 581 // If amount == 0, do nothing even the given field is out of 582 // range. This is tested by JCK. 583 if (amount == 0) { 584 return; 585 } 586 587 if (field < 0 || field >= ZONE_OFFSET) { 588 throw new IllegalArgumentException(); 589 } 590 591 // Sync the time and calendar fields. 592 complete(); 593 594 int min = getMinimum(field); 595 int max = getMaximum(field); 596 597 switch (field) { 598 case ERA: 599 case AM_PM: 600 case MINUTE: 601 case SECOND: 602 case MILLISECOND: 603 // These fields are handled simply, since they have fixed 604 // minima and maxima. Other fields are complicated, since 605 // the range within they must roll varies depending on the 606 // date, a time zone and the era transitions. 607 break; 608 609 case HOUR: 610 case HOUR_OF_DAY: 611 { 612 int unit = max + 1; // 12 or 24 hours 613 int h = internalGet(field); 614 int nh = (h + amount) % unit; 615 if (nh < 0) { 616 nh += unit; 617 } 618 time += ONE_HOUR * (nh - h); 619 620 // The day might have changed, which could happen if 621 // the daylight saving time transition brings it to 622 // the next day, although it's very unlikely. But we 623 // have to make sure not to change the larger fields. 624 CalendarDate d = jcal.getCalendarDate(time, getZone()); 625 if (internalGet(DAY_OF_MONTH) != d.getDayOfMonth()) { 626 d.setEra(jdate.getEra()); 627 d.setDate(internalGet(YEAR), 628 internalGet(MONTH) + 1, 629 internalGet(DAY_OF_MONTH)); 630 if (field == HOUR) { 631 assert (internalGet(AM_PM) == PM); 632 d.addHours(+12); // restore PM 633 } 634 time = jcal.getTime(d); 635 } 636 int hourOfDay = d.getHours(); 637 internalSet(field, hourOfDay % unit); 638 if (field == HOUR) { 639 internalSet(HOUR_OF_DAY, hourOfDay); 640 } else { 641 internalSet(AM_PM, hourOfDay / 12); 642 internalSet(HOUR, hourOfDay % 12); 643 } 644 645 // Time zone offset and/or daylight saving might have changed. 646 int zoneOffset = d.getZoneOffset(); 647 int saving = d.getDaylightSaving(); 648 internalSet(ZONE_OFFSET, zoneOffset - saving); 649 internalSet(DST_OFFSET, saving); 650 return; 651 } 652 653 case YEAR: 654 min = getActualMinimum(field); 655 max = getActualMaximum(field); 656 break; 657 658 case MONTH: 659 // Rolling the month involves both pinning the final value to [0, 11] 660 // and adjusting the DAY_OF_MONTH if necessary. We only adjust the 661 // DAY_OF_MONTH if, after updating the MONTH field, it is illegal. 662 // E.g., <jan31>.roll(MONTH, 1) -> <feb28> or <feb29>. 663 { 664 if (!isTransitionYear(jdate.getNormalizedYear())) { 665 int year = jdate.getYear(); 666 if (year == getMaximum(YEAR)) { 667 CalendarDate jd = jcal.getCalendarDate(time, getZone()); 668 CalendarDate d = jcal.getCalendarDate(Long.MAX_VALUE, getZone()); 669 max = d.getMonth() - 1; 670 int n = getRolledValue(internalGet(field), amount, min, max); 671 if (n == max) { 672 // To avoid overflow, use an equivalent year. 673 jd.addYear(-400); 674 jd.setMonth(n + 1); 675 if (jd.getDayOfMonth() > d.getDayOfMonth()) { 676 jd.setDayOfMonth(d.getDayOfMonth()); 677 jcal.normalize(jd); 678 } 679 if (jd.getDayOfMonth() == d.getDayOfMonth() 680 && jd.getTimeOfDay() > d.getTimeOfDay()) { 681 jd.setMonth(n + 1); 682 jd.setDayOfMonth(d.getDayOfMonth() - 1); 683 jcal.normalize(jd); 684 // Month may have changed by the normalization. 685 n = jd.getMonth() - 1; 686 } 687 set(DAY_OF_MONTH, jd.getDayOfMonth()); 688 } 689 set(MONTH, n); 690 } else if (year == getMinimum(YEAR)) { 691 CalendarDate jd = jcal.getCalendarDate(time, getZone()); 692 CalendarDate d = jcal.getCalendarDate(Long.MIN_VALUE, getZone()); 693 min = d.getMonth() - 1; 694 int n = getRolledValue(internalGet(field), amount, min, max); 695 if (n == min) { 696 // To avoid underflow, use an equivalent year. 697 jd.addYear(+400); 698 jd.setMonth(n + 1); 699 if (jd.getDayOfMonth() < d.getDayOfMonth()) { 700 jd.setDayOfMonth(d.getDayOfMonth()); 701 jcal.normalize(jd); 702 } 703 if (jd.getDayOfMonth() == d.getDayOfMonth() 704 && jd.getTimeOfDay() < d.getTimeOfDay()) { 705 jd.setMonth(n + 1); 706 jd.setDayOfMonth(d.getDayOfMonth() + 1); 707 jcal.normalize(jd); 708 // Month may have changed by the normalization. 709 n = jd.getMonth() - 1; 710 } 711 set(DAY_OF_MONTH, jd.getDayOfMonth()); 712 } 713 set(MONTH, n); 714 } else { 715 int mon = (internalGet(MONTH) + amount) % 12; 716 if (mon < 0) { 717 mon += 12; 718 } 719 set(MONTH, mon); 720 721 // Keep the day of month in the range. We 722 // don't want to spill over into the next 723 // month; e.g., we don't want jan31 + 1 mo -> 724 // feb31 -> mar3. 725 int monthLen = monthLength(mon); 726 if (internalGet(DAY_OF_MONTH) > monthLen) { 727 set(DAY_OF_MONTH, monthLen); 728 } 729 } 730 } else { 731 int eraIndex = getEraIndex(jdate); 732 CalendarDate transition = null; 733 if (jdate.getYear() == 1) { 734 transition = eras[eraIndex].getSinceDate(); 735 min = transition.getMonth() - 1; 736 } else { 737 if (eraIndex < eras.length - 1) { 738 transition = eras[eraIndex + 1].getSinceDate(); 739 if (transition.getYear() == jdate.getNormalizedYear()) { 740 max = transition.getMonth() - 1; 741 if (transition.getDayOfMonth() == 1) { 742 max--; 743 } 744 } 745 } 746 } 747 748 if (min == max) { 749 // The year has only one month. No need to 750 // process further. (Showa Gan-nen (year 1) 751 // and the last year have only one month.) 752 return; 753 } 754 int n = getRolledValue(internalGet(field), amount, min, max); 755 set(MONTH, n); 756 if (n == min) { 757 if (!(transition.getMonth() == BaseCalendar.JANUARY 758 && transition.getDayOfMonth() == 1)) { 759 if (jdate.getDayOfMonth() < transition.getDayOfMonth()) { 760 set(DAY_OF_MONTH, transition.getDayOfMonth()); 761 } 762 } 763 } else if (n == max && (transition.getMonth() - 1 == n)) { 764 int dom = transition.getDayOfMonth(); 765 if (jdate.getDayOfMonth() >= dom) { 766 set(DAY_OF_MONTH, dom - 1); 767 } 768 } 769 } 770 return; 771 } 772 773 case WEEK_OF_YEAR: 774 { 775 int y = jdate.getNormalizedYear(); 776 max = getActualMaximum(WEEK_OF_YEAR); 777 set(DAY_OF_WEEK, internalGet(DAY_OF_WEEK)); // update stamp[field] 778 int woy = internalGet(WEEK_OF_YEAR); 779 int value = woy + amount; 780 if (!isTransitionYear(jdate.getNormalizedYear())) { 781 int year = jdate.getYear(); 782 if (year == getMaximum(YEAR)) { 783 max = getActualMaximum(WEEK_OF_YEAR); 784 } else if (year == getMinimum(YEAR)) { 785 min = getActualMinimum(WEEK_OF_YEAR); 786 max = getActualMaximum(WEEK_OF_YEAR); 787 if (value > min && value < max) { 788 set(WEEK_OF_YEAR, value); 789 return; 790 } 791 792 } 793 // If the new value is in between min and max 794 // (exclusive), then we can use the value. 795 if (value > min && value < max) { 796 set(WEEK_OF_YEAR, value); 797 return; 798 } 799 long fd = cachedFixedDate; 800 // Make sure that the min week has the current DAY_OF_WEEK 801 long day1 = fd - (7 * (woy - min)); 802 if (year != getMinimum(YEAR)) { 803 if (gcal.getYearFromFixedDate(day1) != y) { 804 min++; 805 } 806 } else { 807 CalendarDate d = jcal.getCalendarDate(Long.MIN_VALUE, getZone()); 808 if (day1 < jcal.getFixedDate(d)) { 809 min++; 810 } 811 } 812 813 // Make sure the same thing for the max week 814 fd += 7 * (max - internalGet(WEEK_OF_YEAR)); 815 if (gcal.getYearFromFixedDate(fd) != y) { 816 max--; 817 } 818 break; 819 } 820 821 // Handle transition here. 822 long fd = cachedFixedDate; 823 long day1 = fd - (7 * (woy - min)); 824 // Make sure that the min week has the current DAY_OF_WEEK 825 LocalGregorianCalendar.Date d = getCalendarDate(day1); 826 if (!(d.getEra() == jdate.getEra() && d.getYear() == jdate.getYear())) { 827 min++; 828 } 829 830 // Make sure the same thing for the max week 831 fd += 7 * (max - woy); 832 jcal.getCalendarDateFromFixedDate(d, fd); 833 if (!(d.getEra() == jdate.getEra() && d.getYear() == jdate.getYear())) { 834 max--; 835 } 836 // value: the new WEEK_OF_YEAR which must be converted 837 // to month and day of month. 838 value = getRolledValue(woy, amount, min, max) - 1; 839 d = getCalendarDate(day1 + value * 7); 840 set(MONTH, d.getMonth() - 1); 841 set(DAY_OF_MONTH, d.getDayOfMonth()); 842 return; 843 } 844 845 case WEEK_OF_MONTH: 846 { 847 boolean isTransitionYear = isTransitionYear(jdate.getNormalizedYear()); 848 // dow: relative day of week from the first day of week 849 int dow = internalGet(DAY_OF_WEEK) - getFirstDayOfWeek(); 850 if (dow < 0) { 851 dow += 7; 852 } 853 854 long fd = cachedFixedDate; 855 long month1; // fixed date of the first day (usually 1) of the month 856 int monthLength; // actual month length 857 if (isTransitionYear) { 858 month1 = getFixedDateMonth1(jdate, fd); 859 monthLength = actualMonthLength(); 860 } else { 861 month1 = fd - internalGet(DAY_OF_MONTH) + 1; 862 monthLength = jcal.getMonthLength(jdate); 863 } 864 865 // the first day of week of the month. 866 long monthDay1st = LocalGregorianCalendar.getDayOfWeekDateOnOrBefore(month1 + 6, 867 getFirstDayOfWeek()); 868 // if the week has enough days to form a week, the 869 // week starts from the previous month. 870 if ((int)(monthDay1st - month1) >= getMinimalDaysInFirstWeek()) { 871 monthDay1st -= 7; 872 } 873 max = getActualMaximum(field); 874 875 // value: the new WEEK_OF_MONTH value 876 int value = getRolledValue(internalGet(field), amount, 1, max) - 1; 877 878 // nfd: fixed date of the rolled date 879 long nfd = monthDay1st + value * 7 + dow; 880 881 // Unlike WEEK_OF_YEAR, we need to change day of week if the 882 // nfd is out of the month. 883 if (nfd < month1) { 884 nfd = month1; 885 } else if (nfd >= (month1 + monthLength)) { 886 nfd = month1 + monthLength - 1; 887 } 888 set(DAY_OF_MONTH, (int)(nfd - month1) + 1); 889 return; 890 } 891 892 case DAY_OF_MONTH: 893 { 894 if (!isTransitionYear(jdate.getNormalizedYear())) { 895 max = jcal.getMonthLength(jdate); 896 break; 897 } 898 899 // TODO: Need to change the spec to be usable DAY_OF_MONTH rolling... 900 901 // Transition handling. We can't change year and era 902 // values here due to the Calendar roll spec! 903 long month1 = getFixedDateMonth1(jdate, cachedFixedDate); 904 905 // It may not be a regular month. Convert the date and range to 906 // the relative values, perform the roll, and 907 // convert the result back to the rolled date. 908 int value = getRolledValue((int)(cachedFixedDate - month1), amount, 909 0, actualMonthLength() - 1); 910 LocalGregorianCalendar.Date d = getCalendarDate(month1 + value); 911 assert getEraIndex(d) == internalGetEra() 912 && d.getYear() == internalGet(YEAR) && d.getMonth()-1 == internalGet(MONTH); 913 set(DAY_OF_MONTH, d.getDayOfMonth()); 914 return; 915 } 916 917 case DAY_OF_YEAR: 918 { 919 max = getActualMaximum(field); 920 if (!isTransitionYear(jdate.getNormalizedYear())) { 921 break; 922 } 923 924 // Handle transition. We can't change year and era values 925 // here due to the Calendar roll spec. 926 int value = getRolledValue(internalGet(DAY_OF_YEAR), amount, min, max); 927 long jan0 = cachedFixedDate - internalGet(DAY_OF_YEAR); 928 LocalGregorianCalendar.Date d = getCalendarDate(jan0 + value); 929 assert getEraIndex(d) == internalGetEra() && d.getYear() == internalGet(YEAR); 930 set(MONTH, d.getMonth() - 1); 931 set(DAY_OF_MONTH, d.getDayOfMonth()); 932 return; 933 } 934 935 case DAY_OF_WEEK: 936 { 937 int normalizedYear = jdate.getNormalizedYear(); 938 if (!isTransitionYear(normalizedYear) && !isTransitionYear(normalizedYear - 1)) { 939 // If the week of year is in the same year, we can 940 // just change DAY_OF_WEEK. 941 int weekOfYear = internalGet(WEEK_OF_YEAR); 942 if (weekOfYear > 1 && weekOfYear < 52) { 943 set(WEEK_OF_YEAR, internalGet(WEEK_OF_YEAR)); 944 max = SATURDAY; 945 break; 946 } 947 } 948 949 // We need to handle it in a different way around year 950 // boundaries and in the transition year. Note that 951 // changing era and year values violates the roll 952 // rule: not changing larger calendar fields... 953 amount %= 7; 954 if (amount == 0) { 955 return; 956 } 957 long fd = cachedFixedDate; 958 long dowFirst = LocalGregorianCalendar.getDayOfWeekDateOnOrBefore(fd, getFirstDayOfWeek()); 959 fd += amount; 960 if (fd < dowFirst) { 961 fd += 7; 962 } else if (fd >= dowFirst + 7) { 963 fd -= 7; 964 } 965 LocalGregorianCalendar.Date d = getCalendarDate(fd); 966 set(ERA, getEraIndex(d)); 967 set(d.getYear(), d.getMonth() - 1, d.getDayOfMonth()); 968 return; 969 } 970 971 case DAY_OF_WEEK_IN_MONTH: 972 { 973 min = 1; // after having normalized, min should be 1. 974 if (!isTransitionYear(jdate.getNormalizedYear())) { 975 int dom = internalGet(DAY_OF_MONTH); 976 int monthLength = jcal.getMonthLength(jdate); 977 int lastDays = monthLength % 7; 978 max = monthLength / 7; 979 int x = (dom - 1) % 7; 980 if (x < lastDays) { 981 max++; 982 } 983 set(DAY_OF_WEEK, internalGet(DAY_OF_WEEK)); 984 break; 985 } 986 987 // Transition year handling. 988 long fd = cachedFixedDate; 989 long month1 = getFixedDateMonth1(jdate, fd); 990 int monthLength = actualMonthLength(); 991 int lastDays = monthLength % 7; 992 max = monthLength / 7; 993 int x = (int)(fd - month1) % 7; 994 if (x < lastDays) { 995 max++; 996 } 997 int value = getRolledValue(internalGet(field), amount, min, max) - 1; 998 fd = month1 + value * 7 + x; 999 LocalGregorianCalendar.Date d = getCalendarDate(fd); 1000 set(DAY_OF_MONTH, d.getDayOfMonth()); 1001 return; 1002 } 1003 } 1004 1005 set(field, getRolledValue(internalGet(field), amount, min, max)); 1006 } 1007 1008 @Override 1009 public String getDisplayName(int field, int style, Locale locale) { 1010 if (!checkDisplayNameParams(field, style, SHORT, NARROW_FORMAT, locale, 1011 ERA_MASK|YEAR_MASK|MONTH_MASK|DAY_OF_WEEK_MASK|AM_PM_MASK)) { 1012 return null; 1013 } 1014 1015 int fieldValue = get(field); 1016 1017 // "GanNen" is supported only in the LONG style. 1018 if (field == YEAR 1019 && (getBaseStyle(style) != LONG || fieldValue != 1 || get(ERA) == 0)) { 1020 return null; 1021 } 1022 1023 String name = CalendarDataUtility.retrieveFieldValueName(getCalendarType(), field, 1024 fieldValue, style, locale); 1025 // If the ERA value is null, then 1026 // try to get its name or abbreviation from the Era instance. 1027 if (name == null && field == ERA && fieldValue < eras.length) { 1028 Era era = eras[fieldValue]; 1029 name = (style == SHORT) ? era.getAbbreviation() : era.getName(); 1030 } 1031 return name; 1032 } 1033 1034 @Override 1035 public Map<String,Integer> getDisplayNames(int field, int style, Locale locale) { 1036 if (!checkDisplayNameParams(field, style, ALL_STYLES, NARROW_FORMAT, locale, 1037 ERA_MASK|YEAR_MASK|MONTH_MASK|DAY_OF_WEEK_MASK|AM_PM_MASK)) { 1038 return null; 1039 } 1040 Map<String, Integer> names; 1041 names = CalendarDataUtility.retrieveFieldValueNames(getCalendarType(), field, style, locale); 1042 // If strings[] has fewer than eras[], get more names from eras[]. 1043 if (names != null) { 1044 if (field == ERA) { 1045 int size = names.size(); 1046 if (style == ALL_STYLES) { 1047 Set<Integer> values = new HashSet<>(); 1048 // count unique era values 1049 for (String key : names.keySet()) { 1050 values.add(names.get(key)); 1051 } 1052 size = values.size(); 1053 } 1054 if (size < eras.length) { 1055 int baseStyle = getBaseStyle(style); 1056 for (int i = 0; i < eras.length; i++) { 1057 if (!names.values().contains(i)) { 1058 Era era = eras[i]; 1059 if (baseStyle == ALL_STYLES || baseStyle == SHORT 1060 || baseStyle == NARROW_FORMAT) { 1061 names.put(era.getAbbreviation(), i); 1062 } 1063 if (baseStyle == ALL_STYLES || baseStyle == LONG) { 1064 names.put(era.getName(), i); 1065 } 1066 } 1067 } 1068 } 1069 } 1070 } 1071 return names; 1072 } 1073 1074 /** 1075 * Returns the minimum value for the given calendar field of this 1076 * {@code Calendar} instance. The minimum value is 1077 * defined as the smallest value returned by the 1078 * {@link Calendar#get(int) get} method for any possible time value, 1079 * taking into consideration the current values of the 1080 * {@link Calendar#getFirstDayOfWeek() getFirstDayOfWeek}, 1081 * {@link Calendar#getMinimalDaysInFirstWeek() getMinimalDaysInFirstWeek}, 1082 * and {@link Calendar#getTimeZone() getTimeZone} methods. 1083 * 1084 * @param field the calendar field. 1085 * @return the minimum value for the given calendar field. 1086 * @see #getMaximum(int) 1087 * @see #getGreatestMinimum(int) 1088 * @see #getLeastMaximum(int) 1089 * @see #getActualMinimum(int) 1090 * @see #getActualMaximum(int) 1091 */ 1092 public int getMinimum(int field) { 1093 return MIN_VALUES[field]; 1094 } 1095 1096 /** 1097 * Returns the maximum value for the given calendar field of this 1098 * {@code GregorianCalendar} instance. The maximum value is 1099 * defined as the largest value returned by the 1100 * {@link Calendar#get(int) get} method for any possible time value, 1101 * taking into consideration the current values of the 1102 * {@link Calendar#getFirstDayOfWeek() getFirstDayOfWeek}, 1103 * {@link Calendar#getMinimalDaysInFirstWeek() getMinimalDaysInFirstWeek}, 1104 * and {@link Calendar#getTimeZone() getTimeZone} methods. 1105 * 1106 * @param field the calendar field. 1107 * @return the maximum value for the given calendar field. 1108 * @see #getMinimum(int) 1109 * @see #getGreatestMinimum(int) 1110 * @see #getLeastMaximum(int) 1111 * @see #getActualMinimum(int) 1112 * @see #getActualMaximum(int) 1113 */ 1114 public int getMaximum(int field) { 1115 switch (field) { 1116 case YEAR: 1117 { 1118 // The value should depend on the time zone of this calendar. 1119 LocalGregorianCalendar.Date d = jcal.getCalendarDate(Long.MAX_VALUE, 1120 getZone()); 1121 return Math.max(LEAST_MAX_VALUES[YEAR], d.getYear()); 1122 } 1123 } 1124 return MAX_VALUES[field]; 1125 } 1126 1127 /** 1128 * Returns the highest minimum value for the given calendar field 1129 * of this {@code GregorianCalendar} instance. The highest 1130 * minimum value is defined as the largest value returned by 1131 * {@link #getActualMinimum(int)} for any possible time value, 1132 * taking into consideration the current values of the 1133 * {@link Calendar#getFirstDayOfWeek() getFirstDayOfWeek}, 1134 * {@link Calendar#getMinimalDaysInFirstWeek() getMinimalDaysInFirstWeek}, 1135 * and {@link Calendar#getTimeZone() getTimeZone} methods. 1136 * 1137 * @param field the calendar field. 1138 * @return the highest minimum value for the given calendar field. 1139 * @see #getMinimum(int) 1140 * @see #getMaximum(int) 1141 * @see #getLeastMaximum(int) 1142 * @see #getActualMinimum(int) 1143 * @see #getActualMaximum(int) 1144 */ 1145 public int getGreatestMinimum(int field) { 1146 return field == YEAR ? 1 : MIN_VALUES[field]; 1147 } 1148 1149 /** 1150 * Returns the lowest maximum value for the given calendar field 1151 * of this {@code GregorianCalendar} instance. The lowest 1152 * maximum value is defined as the smallest value returned by 1153 * {@link #getActualMaximum(int)} for any possible time value, 1154 * taking into consideration the current values of the 1155 * {@link Calendar#getFirstDayOfWeek() getFirstDayOfWeek}, 1156 * {@link Calendar#getMinimalDaysInFirstWeek() getMinimalDaysInFirstWeek}, 1157 * and {@link Calendar#getTimeZone() getTimeZone} methods. 1158 * 1159 * @param field the calendar field 1160 * @return the lowest maximum value for the given calendar field. 1161 * @see #getMinimum(int) 1162 * @see #getMaximum(int) 1163 * @see #getGreatestMinimum(int) 1164 * @see #getActualMinimum(int) 1165 * @see #getActualMaximum(int) 1166 */ 1167 public int getLeastMaximum(int field) { 1168 switch (field) { 1169 case YEAR: 1170 { 1171 return Math.min(LEAST_MAX_VALUES[YEAR], getMaximum(YEAR)); 1172 } 1173 } 1174 return LEAST_MAX_VALUES[field]; 1175 } 1176 1177 /** 1178 * Returns the minimum value that this calendar field could have, 1179 * taking into consideration the given time value and the current 1180 * values of the 1181 * {@link Calendar#getFirstDayOfWeek() getFirstDayOfWeek}, 1182 * {@link Calendar#getMinimalDaysInFirstWeek() getMinimalDaysInFirstWeek}, 1183 * and {@link Calendar#getTimeZone() getTimeZone} methods. 1184 * 1185 * @param field the calendar field 1186 * @return the minimum of the given field for the time value of 1187 * this {@code JapaneseImperialCalendar} 1188 * @see #getMinimum(int) 1189 * @see #getMaximum(int) 1190 * @see #getGreatestMinimum(int) 1191 * @see #getLeastMaximum(int) 1192 * @see #getActualMaximum(int) 1193 */ 1194 public int getActualMinimum(int field) { 1195 if (!isFieldSet(YEAR_MASK|MONTH_MASK|WEEK_OF_YEAR_MASK, field)) { 1196 return getMinimum(field); 1197 } 1198 1199 int value = 0; 1200 JapaneseImperialCalendar jc = getNormalizedCalendar(); 1201 // Get a local date which includes time of day and time zone, 1202 // which are missing in jc.jdate. 1203 LocalGregorianCalendar.Date jd = jcal.getCalendarDate(jc.getTimeInMillis(), 1204 getZone()); 1205 int eraIndex = getEraIndex(jd); 1206 switch (field) { 1207 case YEAR: 1208 { 1209 if (eraIndex > BEFORE_MEIJI) { 1210 value = 1; 1211 long since = eras[eraIndex].getSince(getZone()); 1212 CalendarDate d = jcal.getCalendarDate(since, getZone()); 1213 // Use the same year in jd to take care of leap 1214 // years. i.e., both jd and d must agree on leap 1215 // or common years. 1216 jd.setYear(d.getYear()); 1217 jcal.normalize(jd); 1218 assert jd.isLeapYear() == d.isLeapYear(); 1219 if (getYearOffsetInMillis(jd) < getYearOffsetInMillis(d)) { 1220 value++; 1221 } 1222 } else { 1223 value = getMinimum(field); 1224 CalendarDate d = jcal.getCalendarDate(Long.MIN_VALUE, getZone()); 1225 // Use an equvalent year of d.getYear() if 1226 // possible. Otherwise, ignore the leap year and 1227 // common year difference. 1228 int y = d.getYear(); 1229 if (y > 400) { 1230 y -= 400; 1231 } 1232 jd.setYear(y); 1233 jcal.normalize(jd); 1234 if (getYearOffsetInMillis(jd) < getYearOffsetInMillis(d)) { 1235 value++; 1236 } 1237 } 1238 } 1239 break; 1240 1241 case MONTH: 1242 { 1243 // In Before Meiji and Meiji, January is the first month. 1244 if (eraIndex > MEIJI && jd.getYear() == 1) { 1245 long since = eras[eraIndex].getSince(getZone()); 1246 CalendarDate d = jcal.getCalendarDate(since, getZone()); 1247 value = d.getMonth() - 1; 1248 if (jd.getDayOfMonth() < d.getDayOfMonth()) { 1249 value++; 1250 } 1251 } 1252 } 1253 break; 1254 1255 case WEEK_OF_YEAR: 1256 { 1257 value = 1; 1258 CalendarDate d = jcal.getCalendarDate(Long.MIN_VALUE, getZone()); 1259 // shift 400 years to avoid underflow 1260 d.addYear(+400); 1261 jcal.normalize(d); 1262 jd.setEra(d.getEra()); 1263 jd.setYear(d.getYear()); 1264 jcal.normalize(jd); 1265 1266 long jan1 = jcal.getFixedDate(d); 1267 long fd = jcal.getFixedDate(jd); 1268 int woy = getWeekNumber(jan1, fd); 1269 long day1 = fd - (7 * (woy - 1)); 1270 if ((day1 < jan1) || 1271 (day1 == jan1 && 1272 jd.getTimeOfDay() < d.getTimeOfDay())) { 1273 value++; 1274 } 1275 } 1276 break; 1277 } 1278 return value; 1279 } 1280 1281 /** 1282 * Returns the maximum value that this calendar field could have, 1283 * taking into consideration the given time value and the current 1284 * values of the 1285 * {@link Calendar#getFirstDayOfWeek() getFirstDayOfWeek}, 1286 * {@link Calendar#getMinimalDaysInFirstWeek() getMinimalDaysInFirstWeek}, 1287 * and 1288 * {@link Calendar#getTimeZone() getTimeZone} methods. 1289 * For example, if the date of this instance is Heisei 16February 1, 1290 * the actual maximum value of the {@code DAY_OF_MONTH} field 1291 * is 29 because Heisei 16 is a leap year, and if the date of this 1292 * instance is Heisei 17 February 1, it's 28. 1293 * 1294 * @param field the calendar field 1295 * @return the maximum of the given field for the time value of 1296 * this {@code JapaneseImperialCalendar} 1297 * @see #getMinimum(int) 1298 * @see #getMaximum(int) 1299 * @see #getGreatestMinimum(int) 1300 * @see #getLeastMaximum(int) 1301 * @see #getActualMinimum(int) 1302 */ 1303 public int getActualMaximum(int field) { 1304 final int fieldsForFixedMax = ERA_MASK|DAY_OF_WEEK_MASK|HOUR_MASK|AM_PM_MASK| 1305 HOUR_OF_DAY_MASK|MINUTE_MASK|SECOND_MASK|MILLISECOND_MASK| 1306 ZONE_OFFSET_MASK|DST_OFFSET_MASK; 1307 if ((fieldsForFixedMax & (1<<field)) != 0) { 1308 return getMaximum(field); 1309 } 1310 1311 JapaneseImperialCalendar jc = getNormalizedCalendar(); 1312 LocalGregorianCalendar.Date date = jc.jdate; 1313 int normalizedYear = date.getNormalizedYear(); 1314 1315 int value = -1; 1316 switch (field) { 1317 case MONTH: 1318 { 1319 value = DECEMBER; 1320 if (isTransitionYear(date.getNormalizedYear())) { 1321 // TODO: there may be multiple transitions in a year. 1322 int eraIndex = getEraIndex(date); 1323 if (date.getYear() != 1) { 1324 eraIndex++; 1325 assert eraIndex < eras.length; 1326 } 1327 long transition = sinceFixedDates[eraIndex]; 1328 long fd = jc.cachedFixedDate; 1329 if (fd < transition) { 1330 LocalGregorianCalendar.Date ldate 1331 = (LocalGregorianCalendar.Date) date.clone(); 1332 jcal.getCalendarDateFromFixedDate(ldate, transition - 1); 1333 value = ldate.getMonth() - 1; 1334 } 1335 } else { 1336 LocalGregorianCalendar.Date d = jcal.getCalendarDate(Long.MAX_VALUE, 1337 getZone()); 1338 if (date.getEra() == d.getEra() && date.getYear() == d.getYear()) { 1339 value = d.getMonth() - 1; 1340 } 1341 } 1342 } 1343 break; 1344 1345 case DAY_OF_MONTH: 1346 value = jcal.getMonthLength(date); 1347 break; 1348 1349 case DAY_OF_YEAR: 1350 { 1351 if (isTransitionYear(date.getNormalizedYear())) { 1352 // Handle transition year. 1353 // TODO: there may be multiple transitions in a year. 1354 int eraIndex = getEraIndex(date); 1355 if (date.getYear() != 1) { 1356 eraIndex++; 1357 assert eraIndex < eras.length; 1358 } 1359 long transition = sinceFixedDates[eraIndex]; 1360 long fd = jc.cachedFixedDate; 1361 CalendarDate d = gcal.newCalendarDate(TimeZone.NO_TIMEZONE); 1362 d.setDate(date.getNormalizedYear(), BaseCalendar.JANUARY, 1); 1363 if (fd < transition) { 1364 value = (int)(transition - gcal.getFixedDate(d)); 1365 } else { 1366 d.addYear(+1); 1367 value = (int)(gcal.getFixedDate(d) - transition); 1368 } 1369 } else { 1370 LocalGregorianCalendar.Date d = jcal.getCalendarDate(Long.MAX_VALUE, 1371 getZone()); 1372 if (date.getEra() == d.getEra() && date.getYear() == d.getYear()) { 1373 long fd = jcal.getFixedDate(d); 1374 long jan1 = getFixedDateJan1(d, fd); 1375 value = (int)(fd - jan1) + 1; 1376 } else if (date.getYear() == getMinimum(YEAR)) { 1377 CalendarDate d1 = jcal.getCalendarDate(Long.MIN_VALUE, getZone()); 1378 long fd1 = jcal.getFixedDate(d1); 1379 d1.addYear(1); 1380 d1.setMonth(BaseCalendar.JANUARY).setDayOfMonth(1); 1381 jcal.normalize(d1); 1382 long fd2 = jcal.getFixedDate(d1); 1383 value = (int)(fd2 - fd1); 1384 } else { 1385 value = jcal.getYearLength(date); 1386 } 1387 } 1388 } 1389 break; 1390 1391 case WEEK_OF_YEAR: 1392 { 1393 if (!isTransitionYear(date.getNormalizedYear())) { 1394 LocalGregorianCalendar.Date jd = jcal.getCalendarDate(Long.MAX_VALUE, 1395 getZone()); 1396 if (date.getEra() == jd.getEra() && date.getYear() == jd.getYear()) { 1397 long fd = jcal.getFixedDate(jd); 1398 long jan1 = getFixedDateJan1(jd, fd); 1399 value = getWeekNumber(jan1, fd); 1400 } else if (date.getEra() == null && date.getYear() == getMinimum(YEAR)) { 1401 CalendarDate d = jcal.getCalendarDate(Long.MIN_VALUE, getZone()); 1402 // shift 400 years to avoid underflow 1403 d.addYear(+400); 1404 jcal.normalize(d); 1405 jd.setEra(d.getEra()); 1406 jd.setDate(d.getYear() + 1, BaseCalendar.JANUARY, 1); 1407 jcal.normalize(jd); 1408 long jan1 = jcal.getFixedDate(d); 1409 long nextJan1 = jcal.getFixedDate(jd); 1410 long nextJan1st = LocalGregorianCalendar.getDayOfWeekDateOnOrBefore(nextJan1 + 6, 1411 getFirstDayOfWeek()); 1412 int ndays = (int)(nextJan1st - nextJan1); 1413 if (ndays >= getMinimalDaysInFirstWeek()) { 1414 nextJan1st -= 7; 1415 } 1416 value = getWeekNumber(jan1, nextJan1st); 1417 } else { 1418 // Get the day of week of January 1 of the year 1419 CalendarDate d = gcal.newCalendarDate(TimeZone.NO_TIMEZONE); 1420 d.setDate(date.getNormalizedYear(), BaseCalendar.JANUARY, 1); 1421 int dayOfWeek = gcal.getDayOfWeek(d); 1422 // Normalize the day of week with the firstDayOfWeek value 1423 dayOfWeek -= getFirstDayOfWeek(); 1424 if (dayOfWeek < 0) { 1425 dayOfWeek += 7; 1426 } 1427 value = 52; 1428 int magic = dayOfWeek + getMinimalDaysInFirstWeek() - 1; 1429 if ((magic == 6) || 1430 (date.isLeapYear() && (magic == 5 || magic == 12))) { 1431 value++; 1432 } 1433 } 1434 break; 1435 } 1436 1437 if (jc == this) { 1438 jc = (JapaneseImperialCalendar) jc.clone(); 1439 } 1440 int max = getActualMaximum(DAY_OF_YEAR); 1441 jc.set(DAY_OF_YEAR, max); 1442 value = jc.get(WEEK_OF_YEAR); 1443 if (value == 1 && max > 7) { 1444 jc.add(WEEK_OF_YEAR, -1); 1445 value = jc.get(WEEK_OF_YEAR); 1446 } 1447 } 1448 break; 1449 1450 case WEEK_OF_MONTH: 1451 { 1452 LocalGregorianCalendar.Date jd = jcal.getCalendarDate(Long.MAX_VALUE, 1453 getZone()); 1454 if (!(date.getEra() == jd.getEra() && date.getYear() == jd.getYear())) { 1455 CalendarDate d = gcal.newCalendarDate(TimeZone.NO_TIMEZONE); 1456 d.setDate(date.getNormalizedYear(), date.getMonth(), 1); 1457 int dayOfWeek = gcal.getDayOfWeek(d); 1458 int monthLength = gcal.getMonthLength(d); 1459 dayOfWeek -= getFirstDayOfWeek(); 1460 if (dayOfWeek < 0) { 1461 dayOfWeek += 7; 1462 } 1463 int nDaysFirstWeek = 7 - dayOfWeek; // # of days in the first week 1464 value = 3; 1465 if (nDaysFirstWeek >= getMinimalDaysInFirstWeek()) { 1466 value++; 1467 } 1468 monthLength -= nDaysFirstWeek + 7 * 3; 1469 if (monthLength > 0) { 1470 value++; 1471 if (monthLength > 7) { 1472 value++; 1473 } 1474 } 1475 } else { 1476 long fd = jcal.getFixedDate(jd); 1477 long month1 = fd - jd.getDayOfMonth() + 1; 1478 value = getWeekNumber(month1, fd); 1479 } 1480 } 1481 break; 1482 1483 case DAY_OF_WEEK_IN_MONTH: 1484 { 1485 int ndays, dow1; 1486 int dow = date.getDayOfWeek(); 1487 BaseCalendar.Date d = (BaseCalendar.Date) date.clone(); 1488 ndays = jcal.getMonthLength(d); 1489 d.setDayOfMonth(1); 1490 jcal.normalize(d); 1491 dow1 = d.getDayOfWeek(); 1492 int x = dow - dow1; 1493 if (x < 0) { 1494 x += 7; 1495 } 1496 ndays -= x; 1497 value = (ndays + 6) / 7; 1498 } 1499 break; 1500 1501 case YEAR: 1502 { 1503 CalendarDate jd = jcal.getCalendarDate(jc.getTimeInMillis(), getZone()); 1504 CalendarDate d; 1505 int eraIndex = getEraIndex(date); 1506 if (eraIndex == eras.length - 1) { 1507 d = jcal.getCalendarDate(Long.MAX_VALUE, getZone()); 1508 value = d.getYear(); 1509 // Use an equivalent year for the 1510 // getYearOffsetInMillis call to avoid overflow. 1511 if (value > 400) { 1512 jd.setYear(value - 400); 1513 } 1514 } else { 1515 d = jcal.getCalendarDate(eras[eraIndex + 1].getSince(getZone()) - 1, 1516 getZone()); 1517 value = d.getYear(); 1518 // Use the same year as d.getYear() to be 1519 // consistent with leap and common years. 1520 jd.setYear(value); 1521 } 1522 jcal.normalize(jd); 1523 if (getYearOffsetInMillis(jd) > getYearOffsetInMillis(d)) { 1524 value--; 1525 } 1526 } 1527 break; 1528 1529 default: 1530 throw new ArrayIndexOutOfBoundsException(field); 1531 } 1532 return value; 1533 } 1534 1535 /** 1536 * Returns the millisecond offset from the beginning of the 1537 * year. In the year for Long.MIN_VALUE, it's a pseudo value 1538 * beyond the limit. The given CalendarDate object must have been 1539 * normalized before calling this method. 1540 */ 1541 private long getYearOffsetInMillis(CalendarDate date) { 1542 long t = (jcal.getDayOfYear(date) - 1) * ONE_DAY; 1543 return t + date.getTimeOfDay() - date.getZoneOffset(); 1544 } 1545 1546 public Object clone() { 1547 JapaneseImperialCalendar other = (JapaneseImperialCalendar) super.clone(); 1548 1549 other.jdate = (LocalGregorianCalendar.Date) jdate.clone(); 1550 other.originalFields = null; 1551 other.zoneOffsets = null; 1552 return other; 1553 } 1554 1555 public TimeZone getTimeZone() { 1556 TimeZone zone = super.getTimeZone(); 1557 // To share the zone by the CalendarDate 1558 jdate.setZone(zone); 1559 return zone; 1560 } 1561 1562 public void setTimeZone(TimeZone zone) { 1563 super.setTimeZone(zone); 1564 // To share the zone by the CalendarDate 1565 jdate.setZone(zone); 1566 } 1567 1568 /** 1569 * The fixed date corresponding to jdate. If the value is 1570 * Long.MIN_VALUE, the fixed date value is unknown. 1571 */ 1572 private transient long cachedFixedDate = Long.MIN_VALUE; 1573 1574 /** 1575 * Converts the time value (millisecond offset from the <a 1576 * href="Calendar.html#Epoch">Epoch</a>) to calendar field values. 1577 * The time is <em>not</em> 1578 * recomputed first; to recompute the time, then the fields, call the 1579 * {@code complete} method. 1580 * 1581 * @see Calendar#complete 1582 */ 1583 protected void computeFields() { 1584 int mask = 0; 1585 if (isPartiallyNormalized()) { 1586 // Determine which calendar fields need to be computed. 1587 mask = getSetStateFields(); 1588 int fieldMask = ~mask & ALL_FIELDS; 1589 if (fieldMask != 0 || cachedFixedDate == Long.MIN_VALUE) { 1590 mask |= computeFields(fieldMask, 1591 mask & (ZONE_OFFSET_MASK|DST_OFFSET_MASK)); 1592 assert mask == ALL_FIELDS; 1593 } 1594 } else { 1595 // Specify all fields 1596 mask = ALL_FIELDS; 1597 computeFields(mask, 0); 1598 } 1599 // After computing all the fields, set the field state to `COMPUTED'. 1600 setFieldsComputed(mask); 1601 } 1602 1603 /** 1604 * This computeFields implements the conversion from UTC 1605 * (millisecond offset from the Epoch) to calendar 1606 * field values. fieldMask specifies which fields to change the 1607 * setting state to COMPUTED, although all fields are set to 1608 * the correct values. This is required to fix 4685354. 1609 * 1610 * @param fieldMask a bit mask to specify which fields to change 1611 * the setting state. 1612 * @param tzMask a bit mask to specify which time zone offset 1613 * fields to be used for time calculations 1614 * @return a new field mask that indicates what field values have 1615 * actually been set. 1616 */ 1617 private int computeFields(int fieldMask, int tzMask) { 1618 int zoneOffset = 0; 1619 TimeZone tz = getZone(); 1620 if (zoneOffsets == null) { 1621 zoneOffsets = new int[2]; 1622 } 1623 if (tzMask != (ZONE_OFFSET_MASK|DST_OFFSET_MASK)) { 1624 if (tz instanceof ZoneInfo) { 1625 zoneOffset = ((ZoneInfo)tz).getOffsets(time, zoneOffsets); 1626 } else { 1627 zoneOffset = tz.getOffset(time); 1628 zoneOffsets[0] = tz.getRawOffset(); 1629 zoneOffsets[1] = zoneOffset - zoneOffsets[0]; 1630 } 1631 } 1632 if (tzMask != 0) { 1633 if (isFieldSet(tzMask, ZONE_OFFSET)) { 1634 zoneOffsets[0] = internalGet(ZONE_OFFSET); 1635 } 1636 if (isFieldSet(tzMask, DST_OFFSET)) { 1637 zoneOffsets[1] = internalGet(DST_OFFSET); 1638 } 1639 zoneOffset = zoneOffsets[0] + zoneOffsets[1]; 1640 } 1641 1642 // By computing time and zoneOffset separately, we can take 1643 // the wider range of time+zoneOffset than the previous 1644 // implementation. 1645 long fixedDate = zoneOffset / ONE_DAY; 1646 int timeOfDay = zoneOffset % (int)ONE_DAY; 1647 fixedDate += time / ONE_DAY; 1648 timeOfDay += (int) (time % ONE_DAY); 1649 if (timeOfDay >= ONE_DAY) { 1650 timeOfDay -= ONE_DAY; 1651 ++fixedDate; 1652 } else { 1653 while (timeOfDay < 0) { 1654 timeOfDay += ONE_DAY; 1655 --fixedDate; 1656 } 1657 } 1658 fixedDate += EPOCH_OFFSET; 1659 1660 // See if we can use jdate to avoid date calculation. 1661 if (fixedDate != cachedFixedDate || fixedDate < 0) { 1662 jcal.getCalendarDateFromFixedDate(jdate, fixedDate); 1663 cachedFixedDate = fixedDate; 1664 } 1665 int era = getEraIndex(jdate); 1666 int year = jdate.getYear(); 1667 1668 // Always set the ERA and YEAR values. 1669 internalSet(ERA, era); 1670 internalSet(YEAR, year); 1671 int mask = fieldMask | (ERA_MASK|YEAR_MASK); 1672 1673 int month = jdate.getMonth() - 1; // 0-based 1674 int dayOfMonth = jdate.getDayOfMonth(); 1675 1676 // Set the basic date fields. 1677 if ((fieldMask & (MONTH_MASK|DAY_OF_MONTH_MASK|DAY_OF_WEEK_MASK)) 1678 != 0) { 1679 internalSet(MONTH, month); 1680 internalSet(DAY_OF_MONTH, dayOfMonth); 1681 internalSet(DAY_OF_WEEK, jdate.getDayOfWeek()); 1682 mask |= MONTH_MASK|DAY_OF_MONTH_MASK|DAY_OF_WEEK_MASK; 1683 } 1684 1685 if ((fieldMask & (HOUR_OF_DAY_MASK|AM_PM_MASK|HOUR_MASK 1686 |MINUTE_MASK|SECOND_MASK|MILLISECOND_MASK)) != 0) { 1687 if (timeOfDay != 0) { 1688 int hours = timeOfDay / ONE_HOUR; 1689 internalSet(HOUR_OF_DAY, hours); 1690 internalSet(AM_PM, hours / 12); // Assume AM == 0 1691 internalSet(HOUR, hours % 12); 1692 int r = timeOfDay % ONE_HOUR; 1693 internalSet(MINUTE, r / ONE_MINUTE); 1694 r %= ONE_MINUTE; 1695 internalSet(SECOND, r / ONE_SECOND); 1696 internalSet(MILLISECOND, r % ONE_SECOND); 1697 } else { 1698 internalSet(HOUR_OF_DAY, 0); 1699 internalSet(AM_PM, AM); 1700 internalSet(HOUR, 0); 1701 internalSet(MINUTE, 0); 1702 internalSet(SECOND, 0); 1703 internalSet(MILLISECOND, 0); 1704 } 1705 mask |= (HOUR_OF_DAY_MASK|AM_PM_MASK|HOUR_MASK 1706 |MINUTE_MASK|SECOND_MASK|MILLISECOND_MASK); 1707 } 1708 1709 if ((fieldMask & (ZONE_OFFSET_MASK|DST_OFFSET_MASK)) != 0) { 1710 internalSet(ZONE_OFFSET, zoneOffsets[0]); 1711 internalSet(DST_OFFSET, zoneOffsets[1]); 1712 mask |= (ZONE_OFFSET_MASK|DST_OFFSET_MASK); 1713 } 1714 1715 if ((fieldMask & (DAY_OF_YEAR_MASK|WEEK_OF_YEAR_MASK 1716 |WEEK_OF_MONTH_MASK|DAY_OF_WEEK_IN_MONTH_MASK)) != 0) { 1717 int normalizedYear = jdate.getNormalizedYear(); 1718 // If it's a year of an era transition, we need to handle 1719 // irregular year boundaries. 1720 boolean transitionYear = isTransitionYear(jdate.getNormalizedYear()); 1721 int dayOfYear; 1722 long fixedDateJan1; 1723 if (transitionYear) { 1724 fixedDateJan1 = getFixedDateJan1(jdate, fixedDate); 1725 dayOfYear = (int)(fixedDate - fixedDateJan1) + 1; 1726 } else if (normalizedYear == MIN_VALUES[YEAR]) { 1727 CalendarDate dx = jcal.getCalendarDate(Long.MIN_VALUE, getZone()); 1728 fixedDateJan1 = jcal.getFixedDate(dx); 1729 dayOfYear = (int)(fixedDate - fixedDateJan1) + 1; 1730 } else { 1731 dayOfYear = (int) jcal.getDayOfYear(jdate); 1732 fixedDateJan1 = fixedDate - dayOfYear + 1; 1733 } 1734 long fixedDateMonth1 = transitionYear ? 1735 getFixedDateMonth1(jdate, fixedDate) : fixedDate - dayOfMonth + 1; 1736 1737 internalSet(DAY_OF_YEAR, dayOfYear); 1738 internalSet(DAY_OF_WEEK_IN_MONTH, (dayOfMonth - 1) / 7 + 1); 1739 1740 int weekOfYear = getWeekNumber(fixedDateJan1, fixedDate); 1741 1742 // The spec is to calculate WEEK_OF_YEAR in the 1743 // ISO8601-style. This creates problems, though. 1744 if (weekOfYear == 0) { 1745 // If the date belongs to the last week of the 1746 // previous year, use the week number of "12/31" of 1747 // the "previous" year. Again, if the previous year is 1748 // a transition year, we need to take care of it. 1749 // Usually the previous day of the first day of a year 1750 // is December 31, which is not always true in the 1751 // Japanese imperial calendar system. 1752 long fixedDec31 = fixedDateJan1 - 1; 1753 long prevJan1; 1754 LocalGregorianCalendar.Date d = getCalendarDate(fixedDec31); 1755 if (!(transitionYear || isTransitionYear(d.getNormalizedYear()))) { 1756 prevJan1 = fixedDateJan1 - 365; 1757 if (d.isLeapYear()) { 1758 --prevJan1; 1759 } 1760 } else if (transitionYear) { 1761 if (jdate.getYear() == 1) { 1762 // As of NewEra (since Meiji) there's no case 1763 // that there are multiple transitions in a 1764 // year. Historically there was such 1765 // case. There might be such case again in the 1766 // future. 1767 if (era > NEWERA) { 1768 CalendarDate pd = eras[era - 1].getSinceDate(); 1769 if (normalizedYear == pd.getYear()) { 1770 d.setMonth(pd.getMonth()).setDayOfMonth(pd.getDayOfMonth()); 1771 } 1772 } else { 1773 d.setMonth(LocalGregorianCalendar.JANUARY).setDayOfMonth(1); 1774 } 1775 jcal.normalize(d); 1776 prevJan1 = jcal.getFixedDate(d); 1777 } else { 1778 prevJan1 = fixedDateJan1 - 365; 1779 if (d.isLeapYear()) { 1780 --prevJan1; 1781 } 1782 } 1783 } else { 1784 CalendarDate cd = eras[getEraIndex(jdate)].getSinceDate(); 1785 d.setMonth(cd.getMonth()).setDayOfMonth(cd.getDayOfMonth()); 1786 jcal.normalize(d); 1787 prevJan1 = jcal.getFixedDate(d); 1788 } 1789 weekOfYear = getWeekNumber(prevJan1, fixedDec31); 1790 } else { 1791 if (!transitionYear) { 1792 // Regular years 1793 if (weekOfYear >= 52) { 1794 long nextJan1 = fixedDateJan1 + 365; 1795 if (jdate.isLeapYear()) { 1796 nextJan1++; 1797 } 1798 long nextJan1st = LocalGregorianCalendar.getDayOfWeekDateOnOrBefore(nextJan1 + 6, 1799 getFirstDayOfWeek()); 1800 int ndays = (int)(nextJan1st - nextJan1); 1801 if (ndays >= getMinimalDaysInFirstWeek() && fixedDate >= (nextJan1st - 7)) { 1802 // The first days forms a week in which the date is included. 1803 weekOfYear = 1; 1804 } 1805 } 1806 } else { 1807 LocalGregorianCalendar.Date d = (LocalGregorianCalendar.Date) jdate.clone(); 1808 long nextJan1; 1809 if (jdate.getYear() == 1) { 1810 d.addYear(+1); 1811 d.setMonth(LocalGregorianCalendar.JANUARY).setDayOfMonth(1); 1812 nextJan1 = jcal.getFixedDate(d); 1813 } else { 1814 int nextEraIndex = getEraIndex(d) + 1; 1815 CalendarDate cd = eras[nextEraIndex].getSinceDate(); 1816 d.setEra(eras[nextEraIndex]); 1817 d.setDate(1, cd.getMonth(), cd.getDayOfMonth()); 1818 jcal.normalize(d); 1819 nextJan1 = jcal.getFixedDate(d); 1820 } 1821 long nextJan1st = LocalGregorianCalendar.getDayOfWeekDateOnOrBefore(nextJan1 + 6, 1822 getFirstDayOfWeek()); 1823 int ndays = (int)(nextJan1st - nextJan1); 1824 if (ndays >= getMinimalDaysInFirstWeek() && fixedDate >= (nextJan1st - 7)) { 1825 // The first days forms a week in which the date is included. 1826 weekOfYear = 1; 1827 } 1828 } 1829 } 1830 internalSet(WEEK_OF_YEAR, weekOfYear); 1831 internalSet(WEEK_OF_MONTH, getWeekNumber(fixedDateMonth1, fixedDate)); 1832 mask |= (DAY_OF_YEAR_MASK|WEEK_OF_YEAR_MASK|WEEK_OF_MONTH_MASK|DAY_OF_WEEK_IN_MONTH_MASK); 1833 } 1834 return mask; 1835 } 1836 1837 /** 1838 * Returns the number of weeks in a period between fixedDay1 and 1839 * fixedDate. The getFirstDayOfWeek-getMinimalDaysInFirstWeek rule 1840 * is applied to calculate the number of weeks. 1841 * 1842 * @param fixedDay1 the fixed date of the first day of the period 1843 * @param fixedDate the fixed date of the last day of the period 1844 * @return the number of weeks of the given period 1845 */ 1846 private int getWeekNumber(long fixedDay1, long fixedDate) { 1847 // We can always use `jcal' since Julian and Gregorian are the 1848 // same thing for this calculation. 1849 long fixedDay1st = LocalGregorianCalendar.getDayOfWeekDateOnOrBefore(fixedDay1 + 6, 1850 getFirstDayOfWeek()); 1851 int ndays = (int)(fixedDay1st - fixedDay1); 1852 assert ndays <= 7; 1853 if (ndays >= getMinimalDaysInFirstWeek()) { 1854 fixedDay1st -= 7; 1855 } 1856 int normalizedDayOfPeriod = (int)(fixedDate - fixedDay1st); 1857 if (normalizedDayOfPeriod >= 0) { 1858 return normalizedDayOfPeriod / 7 + 1; 1859 } 1860 return CalendarUtils.floorDivide(normalizedDayOfPeriod, 7) + 1; 1861 } 1862 1863 /** 1864 * Converts calendar field values to the time value (millisecond 1865 * offset from the <a href="Calendar.html#Epoch">Epoch</a>). 1866 * 1867 * @exception IllegalArgumentException if any calendar fields are invalid. 1868 */ 1869 protected void computeTime() { 1870 // In non-lenient mode, perform brief checking of calendar 1871 // fields which have been set externally. Through this 1872 // checking, the field values are stored in originalFields[] 1873 // to see if any of them are normalized later. 1874 if (!isLenient()) { 1875 if (originalFields == null) { 1876 originalFields = new int[FIELD_COUNT]; 1877 } 1878 for (int field = 0; field < FIELD_COUNT; field++) { 1879 int value = internalGet(field); 1880 if (isExternallySet(field)) { 1881 // Quick validation for any out of range values 1882 if (value < getMinimum(field) || value > getMaximum(field)) { 1883 throw new IllegalArgumentException(getFieldName(field)); 1884 } 1885 } 1886 originalFields[field] = value; 1887 } 1888 } 1889 1890 // Let the super class determine which calendar fields to be 1891 // used to calculate the time. 1892 int fieldMask = selectFields(); 1893 1894 int year; 1895 int era; 1896 1897 if (isSet(ERA)) { 1898 era = internalGet(ERA); 1899 year = isSet(YEAR) ? internalGet(YEAR) : 1; 1900 } else { 1901 if (isSet(YEAR)) { 1902 era = currentEra; 1903 year = internalGet(YEAR); 1904 } else { 1905 // Equivalent to 1970 (Gregorian) 1906 era = SHOWA; 1907 year = 45; 1908 } 1909 } 1910 1911 // Calculate the time of day. We rely on the convention that 1912 // an UNSET field has 0. 1913 long timeOfDay = 0; 1914 if (isFieldSet(fieldMask, HOUR_OF_DAY)) { 1915 timeOfDay += (long) internalGet(HOUR_OF_DAY); 1916 } else { 1917 timeOfDay += internalGet(HOUR); 1918 // The default value of AM_PM is 0 which designates AM. 1919 if (isFieldSet(fieldMask, AM_PM)) { 1920 timeOfDay += 12 * internalGet(AM_PM); 1921 } 1922 } 1923 timeOfDay *= 60; 1924 timeOfDay += internalGet(MINUTE); 1925 timeOfDay *= 60; 1926 timeOfDay += internalGet(SECOND); 1927 timeOfDay *= 1000; 1928 timeOfDay += internalGet(MILLISECOND); 1929 1930 // Convert the time of day to the number of days and the 1931 // millisecond offset from midnight. 1932 long fixedDate = timeOfDay / ONE_DAY; 1933 timeOfDay %= ONE_DAY; 1934 while (timeOfDay < 0) { 1935 timeOfDay += ONE_DAY; 1936 --fixedDate; 1937 } 1938 1939 // Calculate the fixed date since January 1, 1 (Gregorian). 1940 fixedDate += getFixedDate(era, year, fieldMask); 1941 1942 // millis represents local wall-clock time in milliseconds. 1943 long millis = (fixedDate - EPOCH_OFFSET) * ONE_DAY + timeOfDay; 1944 1945 // Compute the time zone offset and DST offset. There are two potential 1946 // ambiguities here. We'll assume a 2:00 am (wall time) switchover time 1947 // for discussion purposes here. 1948 // 1. The transition into DST. Here, a designated time of 2:00 am - 2:59 am 1949 // can be in standard or in DST depending. However, 2:00 am is an invalid 1950 // representation (the representation jumps from 1:59:59 am Std to 3:00:00 am DST). 1951 // We assume standard time. 1952 // 2. The transition out of DST. Here, a designated time of 1:00 am - 1:59 am 1953 // can be in standard or DST. Both are valid representations (the rep 1954 // jumps from 1:59:59 DST to 1:00:00 Std). 1955 // Again, we assume standard time. 1956 // We use the TimeZone object, unless the user has explicitly set the ZONE_OFFSET 1957 // or DST_OFFSET fields; then we use those fields. 1958 TimeZone zone = getZone(); 1959 if (zoneOffsets == null) { 1960 zoneOffsets = new int[2]; 1961 } 1962 int tzMask = fieldMask & (ZONE_OFFSET_MASK|DST_OFFSET_MASK); 1963 if (tzMask != (ZONE_OFFSET_MASK|DST_OFFSET_MASK)) { 1964 if (zone instanceof ZoneInfo) { 1965 ((ZoneInfo)zone).getOffsetsByWall(millis, zoneOffsets); 1966 } else { 1967 zone.getOffsets(millis - zone.getRawOffset(), zoneOffsets); 1968 } 1969 } 1970 if (tzMask != 0) { 1971 if (isFieldSet(tzMask, ZONE_OFFSET)) { 1972 zoneOffsets[0] = internalGet(ZONE_OFFSET); 1973 } 1974 if (isFieldSet(tzMask, DST_OFFSET)) { 1975 zoneOffsets[1] = internalGet(DST_OFFSET); 1976 } 1977 } 1978 1979 // Adjust the time zone offset values to get the UTC time. 1980 millis -= zoneOffsets[0] + zoneOffsets[1]; 1981 1982 // Set this calendar's time in milliseconds 1983 time = millis; 1984 1985 int mask = computeFields(fieldMask | getSetStateFields(), tzMask); 1986 1987 if (!isLenient()) { 1988 for (int field = 0; field < FIELD_COUNT; field++) { 1989 if (!isExternallySet(field)) { 1990 continue; 1991 } 1992 if (originalFields[field] != internalGet(field)) { 1993 int wrongValue = internalGet(field); 1994 // Restore the original field values 1995 System.arraycopy(originalFields, 0, fields, 0, fields.length); 1996 throw new IllegalArgumentException(getFieldName(field) + "=" + wrongValue 1997 + ", expected " + originalFields[field]); 1998 } 1999 } 2000 } 2001 setFieldsNormalized(mask); 2002 } 2003 2004 /** 2005 * Computes the fixed date under either the Gregorian or the 2006 * Julian calendar, using the given year and the specified calendar fields. 2007 * 2008 * @param era era index 2009 * @param year the normalized year number, with 0 indicating the 2010 * year 1 BCE, -1 indicating 2 BCE, etc. 2011 * @param fieldMask the calendar fields to be used for the date calculation 2012 * @return the fixed date 2013 * @see Calendar#selectFields 2014 */ 2015 private long getFixedDate(int era, int year, int fieldMask) { 2016 int month = JANUARY; 2017 int firstDayOfMonth = 1; 2018 if (isFieldSet(fieldMask, MONTH)) { 2019 // No need to check if MONTH has been set (no isSet(MONTH) 2020 // call) since its unset value happens to be JANUARY (0). 2021 month = internalGet(MONTH); 2022 2023 // If the month is out of range, adjust it into range. 2024 if (month > DECEMBER) { 2025 year += month / 12; 2026 month %= 12; 2027 } else if (month < JANUARY) { 2028 int[] rem = new int[1]; 2029 year += CalendarUtils.floorDivide(month, 12, rem); 2030 month = rem[0]; 2031 } 2032 } else { 2033 if (year == 1 && era != 0) { 2034 CalendarDate d = eras[era].getSinceDate(); 2035 month = d.getMonth() - 1; 2036 firstDayOfMonth = d.getDayOfMonth(); 2037 } 2038 } 2039 2040 // Adjust the base date if year is the minimum value. 2041 if (year == MIN_VALUES[YEAR]) { 2042 CalendarDate dx = jcal.getCalendarDate(Long.MIN_VALUE, getZone()); 2043 int m = dx.getMonth() - 1; 2044 if (month < m) { 2045 month = m; 2046 } 2047 if (month == m) { 2048 firstDayOfMonth = dx.getDayOfMonth(); 2049 } 2050 } 2051 2052 LocalGregorianCalendar.Date date = jcal.newCalendarDate(TimeZone.NO_TIMEZONE); 2053 date.setEra(era > 0 ? eras[era] : null); 2054 date.setDate(year, month + 1, firstDayOfMonth); 2055 jcal.normalize(date); 2056 2057 // Get the fixed date since Jan 1, 1 (Gregorian). We are on 2058 // the first day of either `month' or January in 'year'. 2059 long fixedDate = jcal.getFixedDate(date); 2060 2061 if (isFieldSet(fieldMask, MONTH)) { 2062 // Month-based calculations 2063 if (isFieldSet(fieldMask, DAY_OF_MONTH)) { 2064 // We are on the "first day" of the month (which may 2065 // not be 1). Just add the offset if DAY_OF_MONTH is 2066 // set. If the isSet call returns false, that means 2067 // DAY_OF_MONTH has been selected just because of the 2068 // selected combination. We don't need to add any 2069 // since the default value is the "first day". 2070 if (isSet(DAY_OF_MONTH)) { 2071 // To avoid underflow with DAY_OF_MONTH-firstDayOfMonth, add 2072 // DAY_OF_MONTH, then subtract firstDayOfMonth. 2073 fixedDate += internalGet(DAY_OF_MONTH); 2074 fixedDate -= firstDayOfMonth; 2075 } 2076 } else { 2077 if (isFieldSet(fieldMask, WEEK_OF_MONTH)) { 2078 long firstDayOfWeek = LocalGregorianCalendar.getDayOfWeekDateOnOrBefore(fixedDate + 6, 2079 getFirstDayOfWeek()); 2080 // If we have enough days in the first week, then 2081 // move to the previous week. 2082 if ((firstDayOfWeek - fixedDate) >= getMinimalDaysInFirstWeek()) { 2083 firstDayOfWeek -= 7; 2084 } 2085 if (isFieldSet(fieldMask, DAY_OF_WEEK)) { 2086 firstDayOfWeek = LocalGregorianCalendar.getDayOfWeekDateOnOrBefore(firstDayOfWeek + 6, 2087 internalGet(DAY_OF_WEEK)); 2088 } 2089 // In lenient mode, we treat days of the previous 2090 // months as a part of the specified 2091 // WEEK_OF_MONTH. See 4633646. 2092 fixedDate = firstDayOfWeek + 7 * (internalGet(WEEK_OF_MONTH) - 1); 2093 } else { 2094 int dayOfWeek; 2095 if (isFieldSet(fieldMask, DAY_OF_WEEK)) { 2096 dayOfWeek = internalGet(DAY_OF_WEEK); 2097 } else { 2098 dayOfWeek = getFirstDayOfWeek(); 2099 } 2100 // We are basing this on the day-of-week-in-month. The only 2101 // trickiness occurs if the day-of-week-in-month is 2102 // negative. 2103 int dowim; 2104 if (isFieldSet(fieldMask, DAY_OF_WEEK_IN_MONTH)) { 2105 dowim = internalGet(DAY_OF_WEEK_IN_MONTH); 2106 } else { 2107 dowim = 1; 2108 } 2109 if (dowim >= 0) { 2110 fixedDate = LocalGregorianCalendar.getDayOfWeekDateOnOrBefore(fixedDate + (7 * dowim) - 1, 2111 dayOfWeek); 2112 } else { 2113 // Go to the first day of the next week of 2114 // the specified week boundary. 2115 int lastDate = monthLength(month, year) + (7 * (dowim + 1)); 2116 // Then, get the day of week date on or before the last date. 2117 fixedDate = LocalGregorianCalendar.getDayOfWeekDateOnOrBefore(fixedDate + lastDate - 1, 2118 dayOfWeek); 2119 } 2120 } 2121 } 2122 } else { 2123 // We are on the first day of the year. 2124 if (isFieldSet(fieldMask, DAY_OF_YEAR)) { 2125 if (isTransitionYear(date.getNormalizedYear())) { 2126 fixedDate = getFixedDateJan1(date, fixedDate); 2127 } 2128 // Add the offset, then subtract 1. (Make sure to avoid underflow.) 2129 fixedDate += internalGet(DAY_OF_YEAR); 2130 fixedDate--; 2131 } else { 2132 long firstDayOfWeek = LocalGregorianCalendar.getDayOfWeekDateOnOrBefore(fixedDate + 6, 2133 getFirstDayOfWeek()); 2134 // If we have enough days in the first week, then move 2135 // to the previous week. 2136 if ((firstDayOfWeek - fixedDate) >= getMinimalDaysInFirstWeek()) { 2137 firstDayOfWeek -= 7; 2138 } 2139 if (isFieldSet(fieldMask, DAY_OF_WEEK)) { 2140 int dayOfWeek = internalGet(DAY_OF_WEEK); 2141 if (dayOfWeek != getFirstDayOfWeek()) { 2142 firstDayOfWeek = LocalGregorianCalendar.getDayOfWeekDateOnOrBefore(firstDayOfWeek + 6, 2143 dayOfWeek); 2144 } 2145 } 2146 fixedDate = firstDayOfWeek + 7 * ((long)internalGet(WEEK_OF_YEAR) - 1); 2147 } 2148 } 2149 return fixedDate; 2150 } 2151 2152 /** 2153 * Returns the fixed date of the first day of the year (usually 2154 * January 1) before the specified date. 2155 * 2156 * @param date the date for which the first day of the year is 2157 * calculated. The date has to be in the cut-over year. 2158 * @param fixedDate the fixed date representation of the date 2159 */ 2160 private long getFixedDateJan1(LocalGregorianCalendar.Date date, long fixedDate) { 2161 Era era = date.getEra(); 2162 if (date.getEra() != null && date.getYear() == 1) { 2163 for (int eraIndex = getEraIndex(date); eraIndex > 0; eraIndex--) { 2164 CalendarDate d = eras[eraIndex].getSinceDate(); 2165 long fd = gcal.getFixedDate(d); 2166 // There might be multiple era transitions in a year. 2167 if (fd > fixedDate) { 2168 continue; 2169 } 2170 return fd; 2171 } 2172 } 2173 CalendarDate d = gcal.newCalendarDate(TimeZone.NO_TIMEZONE); 2174 d.setDate(date.getNormalizedYear(), Gregorian.JANUARY, 1); 2175 return gcal.getFixedDate(d); 2176 } 2177 2178 /** 2179 * Returns the fixed date of the first date of the month (usually 2180 * the 1st of the month) before the specified date. 2181 * 2182 * @param date the date for which the first day of the month is 2183 * calculated. The date must be in the era transition year. 2184 * @param fixedDate the fixed date representation of the date 2185 */ 2186 private long getFixedDateMonth1(LocalGregorianCalendar.Date date, 2187 long fixedDate) { 2188 int eraIndex = getTransitionEraIndex(date); 2189 if (eraIndex != -1) { 2190 long transition = sinceFixedDates[eraIndex]; 2191 // If the given date is on or after the transition date, then 2192 // return the transition date. 2193 if (transition <= fixedDate) { 2194 return transition; 2195 } 2196 } 2197 2198 // Otherwise, we can use the 1st day of the month. 2199 return fixedDate - date.getDayOfMonth() + 1; 2200 } 2201 2202 /** 2203 * Returns a LocalGregorianCalendar.Date produced from the specified fixed date. 2204 * 2205 * @param fd the fixed date 2206 */ 2207 private static LocalGregorianCalendar.Date getCalendarDate(long fd) { 2208 LocalGregorianCalendar.Date d = jcal.newCalendarDate(TimeZone.NO_TIMEZONE); 2209 jcal.getCalendarDateFromFixedDate(d, fd); 2210 return d; 2211 } 2212 2213 /** 2214 * Returns the length of the specified month in the specified 2215 * Gregorian year. The year number must be normalized. 2216 * 2217 * @see GregorianCalendar#isLeapYear(int) 2218 */ 2219 private int monthLength(int month, int gregorianYear) { 2220 return CalendarUtils.isGregorianLeapYear(gregorianYear) ? 2221 GregorianCalendar.LEAP_MONTH_LENGTH[month] : GregorianCalendar.MONTH_LENGTH[month]; 2222 } 2223 2224 /** 2225 * Returns the length of the specified month in the year provided 2226 * by internalGet(YEAR). 2227 * 2228 * @see GregorianCalendar#isLeapYear(int) 2229 */ 2230 private int monthLength(int month) { 2231 assert jdate.isNormalized(); 2232 return jdate.isLeapYear() ? 2233 GregorianCalendar.LEAP_MONTH_LENGTH[month] : GregorianCalendar.MONTH_LENGTH[month]; 2234 } 2235 2236 private int actualMonthLength() { 2237 int length = jcal.getMonthLength(jdate); 2238 int eraIndex = getTransitionEraIndex(jdate); 2239 if (eraIndex == -1) { 2240 long transitionFixedDate = sinceFixedDates[eraIndex]; 2241 CalendarDate d = eras[eraIndex].getSinceDate(); 2242 if (transitionFixedDate <= cachedFixedDate) { 2243 length -= d.getDayOfMonth() - 1; 2244 } else { 2245 length = d.getDayOfMonth() - 1; 2246 } 2247 } 2248 return length; 2249 } 2250 2251 /** 2252 * Returns the index to the new era if the given date is in a 2253 * transition month. For example, if the give date is Heisei 1 2254 * (1989) January 20, then the era index for Heisei is 2255 * returned. Likewise, if the given date is Showa 64 (1989) 2256 * January 3, then the era index for Heisei is returned. If the 2257 * given date is not in any transition month, then -1 is returned. 2258 */ 2259 private static int getTransitionEraIndex(LocalGregorianCalendar.Date date) { 2260 int eraIndex = getEraIndex(date); 2261 CalendarDate transitionDate = eras[eraIndex].getSinceDate(); 2262 if (transitionDate.getYear() == date.getNormalizedYear() && 2263 transitionDate.getMonth() == date.getMonth()) { 2264 return eraIndex; 2265 } 2266 if (eraIndex < eras.length - 1) { 2267 transitionDate = eras[++eraIndex].getSinceDate(); 2268 if (transitionDate.getYear() == date.getNormalizedYear() && 2269 transitionDate.getMonth() == date.getMonth()) { 2270 return eraIndex; 2271 } 2272 } 2273 return -1; 2274 } 2275 2276 private boolean isTransitionYear(int normalizedYear) { 2277 for (int i = eras.length - 1; i > 0; i--) { 2278 int transitionYear = eras[i].getSinceDate().getYear(); 2279 if (normalizedYear == transitionYear) { 2280 return true; 2281 } 2282 if (normalizedYear > transitionYear) { 2283 break; 2284 } 2285 } 2286 return false; 2287 } 2288 2289 private static int getEraIndex(LocalGregorianCalendar.Date date) { 2290 Era era = date.getEra(); 2291 for (int i = eras.length - 1; i > 0; i--) { 2292 if (eras[i] == era) { 2293 return i; 2294 } 2295 } 2296 return 0; 2297 } 2298 2299 /** 2300 * Returns this object if it's normalized (all fields and time are 2301 * in sync). Otherwise, a cloned object is returned after calling 2302 * complete() in lenient mode. 2303 */ 2304 private JapaneseImperialCalendar getNormalizedCalendar() { 2305 JapaneseImperialCalendar jc; 2306 if (isFullyNormalized()) { 2307 jc = this; 2308 } else { 2309 // Create a clone and normalize the calendar fields 2310 jc = (JapaneseImperialCalendar) this.clone(); 2311 jc.setLenient(true); 2312 jc.complete(); 2313 } 2314 return jc; 2315 } 2316 2317 /** 2318 * After adjustments such as add(MONTH), add(YEAR), we don't want the 2319 * month to jump around. E.g., we don't want Jan 31 + 1 month to go to Mar 2320 * 3, we want it to go to Feb 28. Adjustments which might run into this 2321 * problem call this method to retain the proper month. 2322 */ 2323 private void pinDayOfMonth(LocalGregorianCalendar.Date date) { 2324 int year = date.getYear(); 2325 int dom = date.getDayOfMonth(); 2326 if (year != getMinimum(YEAR)) { 2327 date.setDayOfMonth(1); 2328 jcal.normalize(date); 2329 int monthLength = jcal.getMonthLength(date); 2330 if (dom > monthLength) { 2331 date.setDayOfMonth(monthLength); 2332 } else { 2333 date.setDayOfMonth(dom); 2334 } 2335 jcal.normalize(date); 2336 } else { 2337 LocalGregorianCalendar.Date d = jcal.getCalendarDate(Long.MIN_VALUE, getZone()); 2338 LocalGregorianCalendar.Date realDate = jcal.getCalendarDate(time, getZone()); 2339 long tod = realDate.getTimeOfDay(); 2340 // Use an equivalent year. 2341 realDate.addYear(+400); 2342 realDate.setMonth(date.getMonth()); 2343 realDate.setDayOfMonth(1); 2344 jcal.normalize(realDate); 2345 int monthLength = jcal.getMonthLength(realDate); 2346 if (dom > monthLength) { 2347 realDate.setDayOfMonth(monthLength); 2348 } else { 2349 if (dom < d.getDayOfMonth()) { 2350 realDate.setDayOfMonth(d.getDayOfMonth()); 2351 } else { 2352 realDate.setDayOfMonth(dom); 2353 } 2354 } 2355 if (realDate.getDayOfMonth() == d.getDayOfMonth() && tod < d.getTimeOfDay()) { 2356 realDate.setDayOfMonth(Math.min(dom + 1, monthLength)); 2357 } 2358 // restore the year. 2359 date.setDate(year, realDate.getMonth(), realDate.getDayOfMonth()); 2360 // Don't normalize date here so as not to cause underflow. 2361 } 2362 } 2363 2364 /** 2365 * Returns the new value after 'roll'ing the specified value and amount. 2366 */ 2367 private static int getRolledValue(int value, int amount, int min, int max) { 2368 assert value >= min && value <= max; 2369 int range = max - min + 1; 2370 amount %= range; 2371 int n = value + amount; 2372 if (n > max) { 2373 n -= range; 2374 } else if (n < min) { 2375 n += range; 2376 } 2377 assert n >= min && n <= max; 2378 return n; 2379 } 2380 2381 /** 2382 * Returns the ERA. We need a special method for this because the 2383 * default ERA is the current era, but a zero (unset) ERA means before Meiji. 2384 */ 2385 private int internalGetEra() { 2386 return isSet(ERA) ? internalGet(ERA) : currentEra; 2387 } 2388 2389 /** 2390 * Updates internal state. 2391 */ 2392 private void readObject(ObjectInputStream stream) 2393 throws IOException, ClassNotFoundException { 2394 stream.defaultReadObject(); 2395 if (jdate == null) { 2396 jdate = jcal.newCalendarDate(getZone()); 2397 cachedFixedDate = Long.MIN_VALUE; 2398 } 2399 } 2400 }