| 1 | /* |
| 2 | * Copyright 2001-2005 Stephen Colebourne |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | package org.joda.time.chrono; |
| 17 | |
| 18 | import java.util.ArrayList; |
| 19 | import java.util.HashMap; |
| 20 | import java.util.Locale; |
| 21 | import java.util.Map; |
| 22 | |
| 23 | import org.joda.time.Chronology; |
| 24 | import org.joda.time.DateTimeField; |
| 25 | import org.joda.time.DateTimeUtils; |
| 26 | import org.joda.time.DateTimeZone; |
| 27 | import org.joda.time.DurationField; |
| 28 | import org.joda.time.IllegalFieldValueException; |
| 29 | import org.joda.time.Instant; |
| 30 | import org.joda.time.ReadableInstant; |
| 31 | import org.joda.time.ReadablePartial; |
| 32 | import org.joda.time.field.BaseDateTimeField; |
| 33 | import org.joda.time.field.DecoratedDurationField; |
| 34 | import org.joda.time.format.DateTimeFormatter; |
| 35 | import org.joda.time.format.ISODateTimeFormat; |
| 36 | |
| 37 | /** |
| 38 | * Implements the Gregorian/Julian calendar system which is the calendar system |
| 39 | * used in most of the world. Wherever possible, it is recommended to use the |
| 40 | * {@link ISOChronology} instead. |
| 41 | * <p> |
| 42 | * The Gregorian calendar replaced the Julian calendar, and the point in time |
| 43 | * when this chronology switches can be controlled using the second parameter |
| 44 | * of the getInstance method. By default this cutover is set to the date the |
| 45 | * Gregorian calendar was first instituted, October 15, 1582. |
| 46 | * <p> |
| 47 | * Before this date, this chronology uses the proleptic Julian calendar |
| 48 | * (proleptic means extending indefinitely). The Julian calendar has leap years |
| 49 | * every four years, whereas the Gregorian has special rules for 100 and 400 |
| 50 | * years. A meaningful result will thus be obtained for all input values. |
| 51 | * However before 8 CE, Julian leap years were irregular, and before 45 BCE |
| 52 | * there was no Julian calendar. |
| 53 | * <p> |
| 54 | * This chronology differs from |
| 55 | * {@link java.util.GregorianCalendar GregorianCalendar} in that years |
| 56 | * in BCE are returned correctly. Thus year 1 BCE is returned as -1 instead of 1. |
| 57 | * The yearOfEra field produces results compatible with GregorianCalendar. |
| 58 | * <p> |
| 59 | * The Julian calendar does not have a year zero, and so year -1 is followed by |
| 60 | * year 1. If the Gregorian cutover date is specified at or before year -1 |
| 61 | * (Julian), year zero is defined. In other words, the proleptic Gregorian |
| 62 | * chronology used by this class has a year zero. |
| 63 | * <p> |
| 64 | * To create a pure proleptic Julian chronology, use {@link JulianChronology}, |
| 65 | * and to create a pure proleptic Gregorian chronology, use |
| 66 | * {@link GregorianChronology}. |
| 67 | * <p> |
| 68 | * GJChronology is thread-safe and immutable. |
| 69 | * |
| 70 | * @author Brian S O'Neill |
| 71 | * @author Stephen Colebourne |
| 72 | * @since 1.0 |
| 73 | */ |
| 74 | public final class GJChronology extends AssembledChronology { |
| 75 | |
| 76 | /** Serialization lock */ |
| 77 | private static final long serialVersionUID = -2545574827706931671L; |
| 78 | |
| 79 | /** |
| 80 | * Convert a datetime from one chronology to another. |
| 81 | */ |
| 82 | private static long convertByYear(long instant, Chronology from, Chronology to) { |
| 83 | return to.getDateTimeMillis |
| 84 | (from.year().get(instant), |
| 85 | from.monthOfYear().get(instant), |
| 86 | from.dayOfMonth().get(instant), |
| 87 | from.millisOfDay().get(instant)); |
| 88 | } |
| 89 | |
| 90 | /** |
| 91 | * Convert a datetime from one chronology to another. |
| 92 | */ |
| 93 | private static long convertByWeekyear(final long instant, Chronology from, Chronology to) { |
| 94 | long newInstant; |
| 95 | newInstant = to.weekyear().set(0, from.weekyear().get(instant)); |
| 96 | newInstant = to.weekOfWeekyear().set(newInstant, from.weekOfWeekyear().get(instant)); |
| 97 | newInstant = to.dayOfWeek().set(newInstant, from.dayOfWeek().get(instant)); |
| 98 | newInstant = to.millisOfDay().set(newInstant, from.millisOfDay().get(instant)); |
| 99 | return newInstant; |
| 100 | } |
| 101 | |
| 102 | /** |
| 103 | * The default GregorianJulian cutover point. |
| 104 | */ |
| 105 | static final Instant DEFAULT_CUTOVER = new Instant(-12219292800000L); |
| 106 | |
| 107 | /** Cache of zone to chronology list */ |
| 108 | private static final Map cCache = new HashMap(); |
| 109 | |
| 110 | /** |
| 111 | * Factory method returns instances of the default GJ cutover |
| 112 | * chronology. This uses a cutover date of October 15, 1582 (Gregorian) |
| 113 | * 00:00:00 UTC. For this value, October 4, 1582 (Julian) is followed by |
| 114 | * October 15, 1582 (Gregorian). |
| 115 | * |
| 116 | * <p>The first day of the week is designated to be |
| 117 | * {@link org.joda.time.DateTimeConstants#MONDAY Monday}, |
| 118 | * and the minimum days in the first week of the year is 4. |
| 119 | * |
| 120 | * <p>The time zone of the returned instance is UTC. |
| 121 | */ |
| 122 | public static GJChronology getInstanceUTC() { |
| 123 | return getInstance(DateTimeZone.UTC, DEFAULT_CUTOVER, 4); |
| 124 | } |
| 125 | |
| 126 | /** |
| 127 | * Factory method returns instances of the default GJ cutover |
| 128 | * chronology. This uses a cutover date of October 15, 1582 (Gregorian) |
| 129 | * 00:00:00 UTC. For this value, October 4, 1582 (Julian) is followed by |
| 130 | * October 15, 1582 (Gregorian). |
| 131 | * |
| 132 | * <p>The first day of the week is designated to be |
| 133 | * {@link org.joda.time.DateTimeConstants#MONDAY Monday}, |
| 134 | * and the minimum days in the first week of the year is 4. |
| 135 | * |
| 136 | * <p>The returned chronology is in the default time zone. |
| 137 | */ |
| 138 | public static GJChronology getInstance() { |
| 139 | return getInstance(DateTimeZone.getDefault(), DEFAULT_CUTOVER, 4); |
| 140 | } |
| 141 | |
| 142 | /** |
| 143 | * Factory method returns instances of the GJ cutover chronology. This uses |
| 144 | * a cutover date of October 15, 1582 (Gregorian) 00:00:00 UTC. For this |
| 145 | * value, October 4, 1582 (Julian) is followed by October 15, 1582 |
| 146 | * (Gregorian). |
| 147 | * |
| 148 | * <p>The first day of the week is designated to be |
| 149 | * {@link org.joda.time.DateTimeConstants#MONDAY Monday}, |
| 150 | * and the minimum days in the first week of the year is 4. |
| 151 | * |
| 152 | * @param zone the time zone to use, null is default |
| 153 | */ |
| 154 | public static GJChronology getInstance(DateTimeZone zone) { |
| 155 | return getInstance(zone, DEFAULT_CUTOVER, 4); |
| 156 | } |
| 157 | |
| 158 | /** |
| 159 | * Factory method returns instances of the GJ cutover chronology. Any |
| 160 | * cutover date may be specified. |
| 161 | * |
| 162 | * <p>The first day of the week is designated to be |
| 163 | * {@link org.joda.time.DateTimeConstants#MONDAY Monday}, |
| 164 | * and the minimum days in the first week of the year is 4. |
| 165 | * |
| 166 | * @param zone the time zone to use, null is default |
| 167 | * @param gregorianCutover the cutover to use, null means default |
| 168 | */ |
| 169 | public static GJChronology getInstance( |
| 170 | DateTimeZone zone, |
| 171 | ReadableInstant gregorianCutover) { |
| 172 | |
| 173 | return getInstance(zone, gregorianCutover, 4); |
| 174 | } |
| 175 | |
| 176 | /** |
| 177 | * Factory method returns instances of the GJ cutover chronology. Any |
| 178 | * cutover date may be specified. |
| 179 | * |
| 180 | * @param zone the time zone to use, null is default |
| 181 | * @param gregorianCutover the cutover to use, null means default |
| 182 | * @param minDaysInFirstWeek minimum number of days in first week of the year; default is 4 |
| 183 | */ |
| 184 | public static synchronized GJChronology getInstance( |
| 185 | DateTimeZone zone, |
| 186 | ReadableInstant gregorianCutover, |
| 187 | int minDaysInFirstWeek) { |
| 188 | |
| 189 | zone = DateTimeUtils.getZone(zone); |
| 190 | Instant cutoverInstant; |
| 191 | if (gregorianCutover == null) { |
| 192 | cutoverInstant = DEFAULT_CUTOVER; |
| 193 | } else { |
| 194 | cutoverInstant = gregorianCutover.toInstant(); |
| 195 | } |
| 196 | |
| 197 | GJChronology chrono; |
| 198 | |
| 199 | ArrayList chronos = (ArrayList)cCache.get(zone); |
| 200 | if (chronos == null) { |
| 201 | chronos = new ArrayList(2); |
| 202 | cCache.put(zone, chronos); |
| 203 | } else { |
| 204 | for (int i=chronos.size(); --i>=0; ) { |
| 205 | chrono = (GJChronology)chronos.get(i); |
| 206 | if (minDaysInFirstWeek == chrono.getMinimumDaysInFirstWeek() && |
| 207 | cutoverInstant.equals(chrono.getGregorianCutover())) { |
| 208 | |
| 209 | return chrono; |
| 210 | } |
| 211 | } |
| 212 | } |
| 213 | |
| 214 | if (zone == DateTimeZone.UTC) { |
| 215 | chrono = new GJChronology |
| 216 | (JulianChronology.getInstance(zone, minDaysInFirstWeek), |
| 217 | GregorianChronology.getInstance(zone, minDaysInFirstWeek), |
| 218 | cutoverInstant); |
| 219 | } else { |
| 220 | chrono = getInstance(DateTimeZone.UTC, cutoverInstant, minDaysInFirstWeek); |
| 221 | chrono = new GJChronology |
| 222 | (ZonedChronology.getInstance(chrono, zone), |
| 223 | chrono.iJulianChronology, |
| 224 | chrono.iGregorianChronology, |
| 225 | chrono.iCutoverInstant); |
| 226 | } |
| 227 | |
| 228 | chronos.add(chrono); |
| 229 | |
| 230 | return chrono; |
| 231 | } |
| 232 | |
| 233 | /** |
| 234 | * Factory method returns instances of the GJ cutover chronology. Any |
| 235 | * cutover date may be specified. |
| 236 | * |
| 237 | * @param zone the time zone to use, null is default |
| 238 | * @param gregorianCutover the cutover to use |
| 239 | * @param minDaysInFirstWeek minimum number of days in first week of the year; default is 4 |
| 240 | */ |
| 241 | public static GJChronology getInstance( |
| 242 | DateTimeZone zone, |
| 243 | long gregorianCutover, |
| 244 | int minDaysInFirstWeek) { |
| 245 | |
| 246 | Instant cutoverInstant; |
| 247 | if (gregorianCutover == DEFAULT_CUTOVER.getMillis()) { |
| 248 | cutoverInstant = null; |
| 249 | } else { |
| 250 | cutoverInstant = new Instant(gregorianCutover); |
| 251 | } |
| 252 | return getInstance(zone, cutoverInstant, minDaysInFirstWeek); |
| 253 | } |
| 254 | |
| 255 | //----------------------------------------------------------------------- |
| 256 | private JulianChronology iJulianChronology; |
| 257 | private GregorianChronology iGregorianChronology; |
| 258 | private Instant iCutoverInstant; |
| 259 | |
| 260 | private long iCutoverMillis; |
| 261 | private long iGapDuration; |
| 262 | |
| 263 | /** |
| 264 | * @param julian chronology used before the cutover instant |
| 265 | * @param gregorian chronology used at and after the cutover instant |
| 266 | * @param cutoverInstant instant when the gregorian chronology began |
| 267 | */ |
| 268 | private GJChronology(JulianChronology julian, |
| 269 | GregorianChronology gregorian, |
| 270 | Instant cutoverInstant) { |
| 271 | super(null, new Object[] {julian, gregorian, cutoverInstant}); |
| 272 | } |
| 273 | |
| 274 | /** |
| 275 | * Called when applying a time zone. |
| 276 | */ |
| 277 | private GJChronology(Chronology base, |
| 278 | JulianChronology julian, |
| 279 | GregorianChronology gregorian, |
| 280 | Instant cutoverInstant) { |
| 281 | super(base, new Object[] {julian, gregorian, cutoverInstant}); |
| 282 | } |
| 283 | |
| 284 | /** |
| 285 | * Serialization singleton |
| 286 | */ |
| 287 | private Object readResolve() { |
| 288 | return getInstance(getZone(), iCutoverInstant, getMinimumDaysInFirstWeek()); |
| 289 | } |
| 290 | |
| 291 | public DateTimeZone getZone() { |
| 292 | Chronology base; |
| 293 | if ((base = getBase()) != null) { |
| 294 | return base.getZone(); |
| 295 | } |
| 296 | return DateTimeZone.UTC; |
| 297 | } |
| 298 | |
| 299 | // Conversion |
| 300 | //----------------------------------------------------------------------- |
| 301 | /** |
| 302 | * Gets the Chronology in the UTC time zone. |
| 303 | * |
| 304 | * @return the chronology in UTC |
| 305 | */ |
| 306 | public Chronology withUTC() { |
| 307 | return withZone(DateTimeZone.UTC); |
| 308 | } |
| 309 | |
| 310 | /** |
| 311 | * Gets the Chronology in a specific time zone. |
| 312 | * |
| 313 | * @param zone the zone to get the chronology in, null is default |
| 314 | * @return the chronology |
| 315 | */ |
| 316 | public Chronology withZone(DateTimeZone zone) { |
| 317 | if (zone == null) { |
| 318 | zone = DateTimeZone.getDefault(); |
| 319 | } |
| 320 | if (zone == getZone()) { |
| 321 | return this; |
| 322 | } |
| 323 | return getInstance(zone, iCutoverInstant, getMinimumDaysInFirstWeek()); |
| 324 | } |
| 325 | |
| 326 | public long getDateTimeMillis(int year, int monthOfYear, int dayOfMonth, |
| 327 | int millisOfDay) |
| 328 | throws IllegalArgumentException |
| 329 | { |
| 330 | Chronology base; |
| 331 | if ((base = getBase()) != null) { |
| 332 | return base.getDateTimeMillis(year, monthOfYear, dayOfMonth, millisOfDay); |
| 333 | } |
| 334 | |
| 335 | // Assume date is Gregorian. |
| 336 | long instant = iGregorianChronology.getDateTimeMillis |
| 337 | (year, monthOfYear, dayOfMonth, millisOfDay); |
| 338 | if (instant < iCutoverMillis) { |
| 339 | // Maybe it's Julian. |
| 340 | instant = iJulianChronology.getDateTimeMillis |
| 341 | (year, monthOfYear, dayOfMonth, millisOfDay); |
| 342 | if (instant >= iCutoverMillis) { |
| 343 | // Okay, it's in the illegal cutover gap. |
| 344 | throw new IllegalArgumentException("Specified date does not exist"); |
| 345 | } |
| 346 | } |
| 347 | return instant; |
| 348 | } |
| 349 | |
| 350 | public long getDateTimeMillis(int year, int monthOfYear, int dayOfMonth, |
| 351 | int hourOfDay, int minuteOfHour, |
| 352 | int secondOfMinute, int millisOfSecond) |
| 353 | throws IllegalArgumentException |
| 354 | { |
| 355 | Chronology base; |
| 356 | if ((base = getBase()) != null) { |
| 357 | return base.getDateTimeMillis |
| 358 | (year, monthOfYear, dayOfMonth, |
| 359 | hourOfDay, minuteOfHour, secondOfMinute, millisOfSecond); |
| 360 | } |
| 361 | |
| 362 | // Assume date is Gregorian. |
| 363 | long instant = iGregorianChronology.getDateTimeMillis |
| 364 | (year, monthOfYear, dayOfMonth, |
| 365 | hourOfDay, minuteOfHour, secondOfMinute, millisOfSecond); |
| 366 | if (instant < iCutoverMillis) { |
| 367 | // Maybe it's Julian. |
| 368 | instant = iJulianChronology.getDateTimeMillis |
| 369 | (year, monthOfYear, dayOfMonth, |
| 370 | hourOfDay, minuteOfHour, secondOfMinute, millisOfSecond); |
| 371 | if (instant >= iCutoverMillis) { |
| 372 | // Okay, it's in the illegal cutover gap. |
| 373 | throw new IllegalArgumentException("Specified date does not exist"); |
| 374 | } |
| 375 | } |
| 376 | return instant; |
| 377 | } |
| 378 | |
| 379 | /** |
| 380 | * Gets the cutover instant between Gregorian and Julian chronologies. |
| 381 | * @return the cutover instant |
| 382 | */ |
| 383 | public Instant getGregorianCutover() { |
| 384 | return iCutoverInstant; |
| 385 | } |
| 386 | |
| 387 | /** |
| 388 | * Gets the minimum days needed for a week to be the first week in a year. |
| 389 | * |
| 390 | * @return the minimum days |
| 391 | */ |
| 392 | public int getMinimumDaysInFirstWeek() { |
| 393 | return iGregorianChronology.getMinimumDaysInFirstWeek(); |
| 394 | } |
| 395 | |
| 396 | /** |
| 397 | * Checks if this chronology instance equals another. |
| 398 | * |
| 399 | * @param obj the object to compare to |
| 400 | * @return true if equal |
| 401 | * @since 1.6 |
| 402 | */ |
| 403 | public boolean equals(Object obj) { |
| 404 | return super.equals(obj); |
| 405 | } |
| 406 | |
| 407 | /** |
| 408 | * A suitable hash code for the chronology. |
| 409 | * |
| 410 | * @return the hash code |
| 411 | * @since 1.6 |
| 412 | */ |
| 413 | public int hashCode() { |
| 414 | return "GJ".hashCode() * 11 + iJulianChronology.hashCode() + |
| 415 | iGregorianChronology.hashCode() + iCutoverInstant.hashCode(); |
| 416 | } |
| 417 | |
| 418 | // Output |
| 419 | //----------------------------------------------------------------------- |
| 420 | /** |
| 421 | * Gets a debugging toString. |
| 422 | * |
| 423 | * @return a debugging string |
| 424 | */ |
| 425 | public String toString() { |
| 426 | StringBuffer sb = new StringBuffer(60); |
| 427 | sb.append("GJChronology"); |
| 428 | sb.append('['); |
| 429 | sb.append(getZone().getID()); |
| 430 | |
| 431 | if (iCutoverMillis != DEFAULT_CUTOVER.getMillis()) { |
| 432 | sb.append(",cutover="); |
| 433 | DateTimeFormatter printer; |
| 434 | if (withUTC().dayOfYear().remainder(iCutoverMillis) == 0) { |
| 435 | printer = ISODateTimeFormat.date(); |
| 436 | } else { |
| 437 | printer = ISODateTimeFormat.dateTime(); |
| 438 | } |
| 439 | printer.withChronology(withUTC()).printTo(sb, iCutoverMillis); |
| 440 | } |
| 441 | |
| 442 | if (getMinimumDaysInFirstWeek() != 4) { |
| 443 | sb.append(",mdfw="); |
| 444 | sb.append(getMinimumDaysInFirstWeek()); |
| 445 | } |
| 446 | sb.append(']'); |
| 447 | |
| 448 | return sb.toString(); |
| 449 | } |
| 450 | |
| 451 | protected void assemble(Fields fields) { |
| 452 | Object[] params = (Object[])getParam(); |
| 453 | |
| 454 | JulianChronology julian = (JulianChronology)params[0]; |
| 455 | GregorianChronology gregorian = (GregorianChronology)params[1]; |
| 456 | Instant cutoverInstant = (Instant)params[2]; |
| 457 | iCutoverMillis = cutoverInstant.getMillis(); |
| 458 | |
| 459 | iJulianChronology = julian; |
| 460 | iGregorianChronology = gregorian; |
| 461 | iCutoverInstant = cutoverInstant; |
| 462 | |
| 463 | if (getBase() != null) { |
| 464 | return; |
| 465 | } |
| 466 | |
| 467 | if (julian.getMinimumDaysInFirstWeek() != gregorian.getMinimumDaysInFirstWeek()) { |
| 468 | throw new IllegalArgumentException(); |
| 469 | } |
| 470 | |
| 471 | // Compute difference between the chronologies at the cutover instant |
| 472 | iGapDuration = iCutoverMillis - julianToGregorianByYear(iCutoverMillis); |
| 473 | |
| 474 | // Begin field definitions. |
| 475 | |
| 476 | // First just copy all the Gregorian fields and then override those |
| 477 | // that need special attention. |
| 478 | fields.copyFieldsFrom(gregorian); |
| 479 | |
| 480 | // Assuming cutover is at midnight, all time of day fields can be |
| 481 | // gregorian since they are unaffected by cutover. |
| 482 | |
| 483 | // Verify assumption. |
| 484 | if (gregorian.millisOfDay().get(iCutoverMillis) == 0) { |
| 485 | // Cutover is sometime in the day, so cutover fields are required |
| 486 | // for time of day. |
| 487 | |
| 488 | fields.millisOfSecond = new CutoverField(julian.millisOfSecond(), fields.millisOfSecond, iCutoverMillis); |
| 489 | fields.millisOfDay = new CutoverField(julian.millisOfDay(), fields.millisOfDay, iCutoverMillis); |
| 490 | fields.secondOfMinute = new CutoverField(julian.secondOfMinute(), fields.secondOfMinute, iCutoverMillis); |
| 491 | fields.secondOfDay = new CutoverField(julian.secondOfDay(), fields.secondOfDay, iCutoverMillis); |
| 492 | fields.minuteOfHour = new CutoverField(julian.minuteOfHour(), fields.minuteOfHour, iCutoverMillis); |
| 493 | fields.minuteOfDay = new CutoverField(julian.minuteOfDay(), fields.minuteOfDay, iCutoverMillis); |
| 494 | fields.hourOfDay = new CutoverField(julian.hourOfDay(), fields.hourOfDay, iCutoverMillis); |
| 495 | fields.hourOfHalfday = new CutoverField(julian.hourOfHalfday(), fields.hourOfHalfday, iCutoverMillis); |
| 496 | fields.clockhourOfDay = new CutoverField(julian.clockhourOfDay(), fields.clockhourOfDay, iCutoverMillis); |
| 497 | fields.clockhourOfHalfday = new CutoverField(julian.clockhourOfHalfday(), |
| 498 | fields.clockhourOfHalfday, iCutoverMillis); |
| 499 | fields.halfdayOfDay = new CutoverField(julian.halfdayOfDay(), fields.halfdayOfDay, iCutoverMillis); |
| 500 | } |
| 501 | |
| 502 | // These fields just require basic cutover support. |
| 503 | { |
| 504 | fields.era = new CutoverField(julian.era(), fields.era, iCutoverMillis); |
| 505 | } |
| 506 | |
| 507 | // DayOfYear and weekOfWeekyear require special handling since cutover |
| 508 | // year has fewer days and weeks. Extend the cutover to the start of |
| 509 | // the next year or weekyear. This keeps the sequence unbroken during |
| 510 | // the cutover year. |
| 511 | |
| 512 | { |
| 513 | long cutover = gregorian.year().roundCeiling(iCutoverMillis); |
| 514 | fields.dayOfYear = new CutoverField( |
| 515 | julian.dayOfYear(), fields.dayOfYear, cutover); |
| 516 | } |
| 517 | |
| 518 | { |
| 519 | long cutover = gregorian.weekyear().roundCeiling(iCutoverMillis); |
| 520 | fields.weekOfWeekyear = new CutoverField( |
| 521 | julian.weekOfWeekyear(), fields.weekOfWeekyear, cutover, true); |
| 522 | } |
| 523 | |
| 524 | // These fields are special because they have imprecise durations. The |
| 525 | // family of addition methods need special attention. Override affected |
| 526 | // duration fields as well. |
| 527 | { |
| 528 | fields.year = new ImpreciseCutoverField( |
| 529 | julian.year(), fields.year, iCutoverMillis); |
| 530 | fields.years = fields.year.getDurationField(); |
| 531 | fields.yearOfEra = new ImpreciseCutoverField( |
| 532 | julian.yearOfEra(), fields.yearOfEra, fields.years, iCutoverMillis); |
| 533 | fields.yearOfCentury = new ImpreciseCutoverField( |
| 534 | julian.yearOfCentury(), fields.yearOfCentury, fields.years, iCutoverMillis); |
| 535 | |
| 536 | fields.centuryOfEra = new ImpreciseCutoverField( |
| 537 | julian.centuryOfEra(), fields.centuryOfEra, iCutoverMillis); |
| 538 | fields.centuries = fields.centuryOfEra.getDurationField(); |
| 539 | |
| 540 | fields.monthOfYear = new ImpreciseCutoverField( |
| 541 | julian.monthOfYear(), fields.monthOfYear, iCutoverMillis); |
| 542 | fields.months = fields.monthOfYear.getDurationField(); |
| 543 | |
| 544 | fields.weekyear = new ImpreciseCutoverField( |
| 545 | julian.weekyear(), fields.weekyear, null, iCutoverMillis, true); |
| 546 | fields.weekyearOfCentury = new ImpreciseCutoverField( |
| 547 | julian.weekyearOfCentury(), fields.weekyearOfCentury, fields.weekyears, iCutoverMillis); |
| 548 | fields.weekyears = fields.weekyear.getDurationField(); |
| 549 | } |
| 550 | |
| 551 | // These fields require basic cutover support, except they must link to |
| 552 | // imprecise durations. |
| 553 | { |
| 554 | CutoverField cf = new CutoverField |
| 555 | (julian.dayOfMonth(), fields.dayOfMonth, iCutoverMillis); |
| 556 | cf.iRangeDurationField = fields.months; |
| 557 | fields.dayOfMonth = cf; |
| 558 | } |
| 559 | } |
| 560 | |
| 561 | long julianToGregorianByYear(long instant) { |
| 562 | return convertByYear(instant, iJulianChronology, iGregorianChronology); |
| 563 | } |
| 564 | |
| 565 | long gregorianToJulianByYear(long instant) { |
| 566 | return convertByYear(instant, iGregorianChronology, iJulianChronology); |
| 567 | } |
| 568 | |
| 569 | long julianToGregorianByWeekyear(long instant) { |
| 570 | return convertByWeekyear(instant, iJulianChronology, iGregorianChronology); |
| 571 | } |
| 572 | |
| 573 | long gregorianToJulianByWeekyear(long instant) { |
| 574 | return convertByWeekyear(instant, iGregorianChronology, iJulianChronology); |
| 575 | } |
| 576 | |
| 577 | //----------------------------------------------------------------------- |
| 578 | /** |
| 579 | * This basic cutover field adjusts calls to 'get' and 'set' methods, and |
| 580 | * assumes that calls to add and addWrapField are unaffected by the cutover. |
| 581 | */ |
| 582 | private class CutoverField extends BaseDateTimeField { |
| 583 | private static final long serialVersionUID = 3528501219481026402L; |
| 584 | |
| 585 | final DateTimeField iJulianField; |
| 586 | final DateTimeField iGregorianField; |
| 587 | final long iCutover; |
| 588 | final boolean iConvertByWeekyear; |
| 589 | |
| 590 | protected DurationField iDurationField; |
| 591 | protected DurationField iRangeDurationField; |
| 592 | |
| 593 | /** |
| 594 | * @param julianField field from the chronology used before the cutover instant |
| 595 | * @param gregorianField field from the chronology used at and after the cutover |
| 596 | * @param cutoverMillis the millis of the cutover |
| 597 | */ |
| 598 | CutoverField(DateTimeField julianField, DateTimeField gregorianField, long cutoverMillis) { |
| 599 | this(julianField, gregorianField, cutoverMillis, false); |
| 600 | } |
| 601 | |
| 602 | /** |
| 603 | * @param julianField field from the chronology used before the cutover instant |
| 604 | * @param gregorianField field from the chronology used at and after the cutover |
| 605 | * @param cutoverMillis the millis of the cutover |
| 606 | * @param convertByWeekyear |
| 607 | */ |
| 608 | CutoverField(DateTimeField julianField, DateTimeField gregorianField, |
| 609 | long cutoverMillis, boolean convertByWeekyear) { |
| 610 | super(gregorianField.getType()); |
| 611 | iJulianField = julianField; |
| 612 | iGregorianField = gregorianField; |
| 613 | iCutover = cutoverMillis; |
| 614 | iConvertByWeekyear = convertByWeekyear; |
| 615 | // Although average length of Julian and Gregorian years differ, |
| 616 | // use the Gregorian duration field because it is more accurate. |
| 617 | iDurationField = gregorianField.getDurationField(); |
| 618 | |
| 619 | DurationField rangeField = gregorianField.getRangeDurationField(); |
| 620 | if (rangeField == null) { |
| 621 | rangeField = julianField.getRangeDurationField(); |
| 622 | } |
| 623 | iRangeDurationField = rangeField; |
| 624 | } |
| 625 | |
| 626 | public boolean isLenient() { |
| 627 | return false; |
| 628 | } |
| 629 | |
| 630 | public int get(long instant) { |
| 631 | if (instant >= iCutover) { |
| 632 | return iGregorianField.get(instant); |
| 633 | } else { |
| 634 | return iJulianField.get(instant); |
| 635 | } |
| 636 | } |
| 637 | |
| 638 | public String getAsText(long instant, Locale locale) { |
| 639 | if (instant >= iCutover) { |
| 640 | return iGregorianField.getAsText(instant, locale); |
| 641 | } else { |
| 642 | return iJulianField.getAsText(instant, locale); |
| 643 | } |
| 644 | } |
| 645 | |
| 646 | public String getAsText(int fieldValue, Locale locale) { |
| 647 | return iGregorianField.getAsText(fieldValue, locale); |
| 648 | } |
| 649 | |
| 650 | public String getAsShortText(long instant, Locale locale) { |
| 651 | if (instant >= iCutover) { |
| 652 | return iGregorianField.getAsShortText(instant, locale); |
| 653 | } else { |
| 654 | return iJulianField.getAsShortText(instant, locale); |
| 655 | } |
| 656 | } |
| 657 | |
| 658 | public String getAsShortText(int fieldValue, Locale locale) { |
| 659 | return iGregorianField.getAsShortText(fieldValue, locale); |
| 660 | } |
| 661 | |
| 662 | public long add(long instant, int value) { |
| 663 | return iGregorianField.add(instant, value); |
| 664 | } |
| 665 | |
| 666 | public long add(long instant, long value) { |
| 667 | return iGregorianField.add(instant, value); |
| 668 | } |
| 669 | |
| 670 | public int[] add(ReadablePartial partial, int fieldIndex, int[] values, int valueToAdd) { |
| 671 | // overridden as superclass algorithm can't handle |
| 672 | // 2004-02-29 + 48 months -> 2008-02-29 type dates |
| 673 | if (valueToAdd == 0) { |
| 674 | return values; |
| 675 | } |
| 676 | if (DateTimeUtils.isContiguous(partial)) { |
| 677 | long instant = 0L; |
| 678 | for (int i = 0, isize = partial.size(); i < isize; i++) { |
| 679 | instant = partial.getFieldType(i).getField(GJChronology.this).set(instant, values[i]); |
| 680 | } |
| 681 | instant = add(instant, valueToAdd); |
| 682 | return GJChronology.this.get(partial, instant); |
| 683 | } else { |
| 684 | return super.add(partial, fieldIndex, values, valueToAdd); |
| 685 | } |
| 686 | } |
| 687 | |
| 688 | public int getDifference(long minuendInstant, long subtrahendInstant) { |
| 689 | return iGregorianField.getDifference(minuendInstant, subtrahendInstant); |
| 690 | } |
| 691 | |
| 692 | public long getDifferenceAsLong(long minuendInstant, long subtrahendInstant) { |
| 693 | return iGregorianField.getDifferenceAsLong(minuendInstant, subtrahendInstant); |
| 694 | } |
| 695 | |
| 696 | public long set(long instant, int value) { |
| 697 | if (instant >= iCutover) { |
| 698 | instant = iGregorianField.set(instant, value); |
| 699 | if (instant < iCutover) { |
| 700 | // Only adjust if gap fully crossed. |
| 701 | if (instant + iGapDuration < iCutover) { |
| 702 | instant = gregorianToJulian(instant); |
| 703 | } |
| 704 | // Verify that new value stuck. |
| 705 | if (get(instant) != value) { |
| 706 | throw new IllegalFieldValueException |
| 707 | (iGregorianField.getType(), new Integer(value), null, null); |
| 708 | } |
| 709 | } |
| 710 | } else { |
| 711 | instant = iJulianField.set(instant, value); |
| 712 | if (instant >= iCutover) { |
| 713 | // Only adjust if gap fully crossed. |
| 714 | if (instant - iGapDuration >= iCutover) { |
| 715 | instant = julianToGregorian(instant); |
| 716 | } |
| 717 | // Verify that new value stuck. |
| 718 | if (get(instant) != value) { |
| 719 | throw new IllegalFieldValueException |
| 720 | (iJulianField.getType(), new Integer(value), null, null); |
| 721 | } |
| 722 | } |
| 723 | } |
| 724 | return instant; |
| 725 | } |
| 726 | |
| 727 | public long set(long instant, String text, Locale locale) { |
| 728 | if (instant >= iCutover) { |
| 729 | instant = iGregorianField.set(instant, text, locale); |
| 730 | if (instant < iCutover) { |
| 731 | // Only adjust if gap fully crossed. |
| 732 | if (instant + iGapDuration < iCutover) { |
| 733 | instant = gregorianToJulian(instant); |
| 734 | } |
| 735 | // Cannot verify that new value stuck because set may be lenient. |
| 736 | } |
| 737 | } else { |
| 738 | instant = iJulianField.set(instant, text, locale); |
| 739 | if (instant >= iCutover) { |
| 740 | // Only adjust if gap fully crossed. |
| 741 | if (instant - iGapDuration >= iCutover) { |
| 742 | instant = julianToGregorian(instant); |
| 743 | } |
| 744 | // Cannot verify that new value stuck because set may be lenient. |
| 745 | } |
| 746 | } |
| 747 | return instant; |
| 748 | } |
| 749 | |
| 750 | public DurationField getDurationField() { |
| 751 | return iDurationField; |
| 752 | } |
| 753 | |
| 754 | public DurationField getRangeDurationField() { |
| 755 | return iRangeDurationField; |
| 756 | } |
| 757 | |
| 758 | public boolean isLeap(long instant) { |
| 759 | if (instant >= iCutover) { |
| 760 | return iGregorianField.isLeap(instant); |
| 761 | } else { |
| 762 | return iJulianField.isLeap(instant); |
| 763 | } |
| 764 | } |
| 765 | |
| 766 | public int getLeapAmount(long instant) { |
| 767 | if (instant >= iCutover) { |
| 768 | return iGregorianField.getLeapAmount(instant); |
| 769 | } else { |
| 770 | return iJulianField.getLeapAmount(instant); |
| 771 | } |
| 772 | } |
| 773 | |
| 774 | public DurationField getLeapDurationField() { |
| 775 | return iGregorianField.getLeapDurationField(); |
| 776 | } |
| 777 | |
| 778 | |
| 779 | public int getMinimumValue() { |
| 780 | // For all precise fields, the Julian and Gregorian limits are |
| 781 | // identical. Choose Julian to tighten up the year limits. |
| 782 | return iJulianField.getMinimumValue(); |
| 783 | } |
| 784 | |
| 785 | public int getMinimumValue(ReadablePartial partial) { |
| 786 | return iJulianField.getMinimumValue(partial); |
| 787 | } |
| 788 | |
| 789 | public int getMinimumValue(ReadablePartial partial, int[] values) { |
| 790 | return iJulianField.getMinimumValue(partial, values); |
| 791 | } |
| 792 | |
| 793 | public int getMinimumValue(long instant) { |
| 794 | if (instant < iCutover) { |
| 795 | return iJulianField.getMinimumValue(instant); |
| 796 | } |
| 797 | |
| 798 | int min = iGregorianField.getMinimumValue(instant); |
| 799 | |
| 800 | // Because the cutover may reduce the length of this field, verify |
| 801 | // the minimum by setting it. |
| 802 | instant = iGregorianField.set(instant, min); |
| 803 | if (instant < iCutover) { |
| 804 | min = iGregorianField.get(iCutover); |
| 805 | } |
| 806 | |
| 807 | return min; |
| 808 | } |
| 809 | |
| 810 | public int getMaximumValue() { |
| 811 | // For all precise fields, the Julian and Gregorian limits are |
| 812 | // identical. |
| 813 | return iGregorianField.getMaximumValue(); |
| 814 | } |
| 815 | |
| 816 | public int getMaximumValue(long instant) { |
| 817 | if (instant >= iCutover) { |
| 818 | return iGregorianField.getMaximumValue(instant); |
| 819 | } |
| 820 | |
| 821 | int max = iJulianField.getMaximumValue(instant); |
| 822 | |
| 823 | // Because the cutover may reduce the length of this field, verify |
| 824 | // the maximum by setting it. |
| 825 | instant = iJulianField.set(instant, max); |
| 826 | if (instant >= iCutover) { |
| 827 | max = iJulianField.get(iJulianField.add(iCutover, -1)); |
| 828 | } |
| 829 | |
| 830 | return max; |
| 831 | } |
| 832 | |
| 833 | public int getMaximumValue(ReadablePartial partial) { |
| 834 | long instant = GJChronology.getInstanceUTC().set(partial, 0L); |
| 835 | return getMaximumValue(instant); |
| 836 | } |
| 837 | |
| 838 | public int getMaximumValue(ReadablePartial partial, int[] values) { |
| 839 | Chronology chrono = GJChronology.getInstanceUTC(); |
| 840 | long instant = 0L; |
| 841 | for (int i = 0, isize = partial.size(); i < isize; i++) { |
| 842 | DateTimeField field = partial.getFieldType(i).getField(chrono); |
| 843 | if (values[i] <= field.getMaximumValue(instant)) { |
| 844 | instant = field.set(instant, values[i]); |
| 845 | } |
| 846 | } |
| 847 | return getMaximumValue(instant); |
| 848 | } |
| 849 | |
| 850 | public long roundFloor(long instant) { |
| 851 | if (instant >= iCutover) { |
| 852 | instant = iGregorianField.roundFloor(instant); |
| 853 | if (instant < iCutover) { |
| 854 | // Only adjust if gap fully crossed. |
| 855 | if (instant + iGapDuration < iCutover) { |
| 856 | instant = gregorianToJulian(instant); |
| 857 | } |
| 858 | } |
| 859 | } else { |
| 860 | instant = iJulianField.roundFloor(instant); |
| 861 | } |
| 862 | return instant; |
| 863 | } |
| 864 | |
| 865 | public long roundCeiling(long instant) { |
| 866 | if (instant >= iCutover) { |
| 867 | instant = iGregorianField.roundCeiling(instant); |
| 868 | } else { |
| 869 | instant = iJulianField.roundCeiling(instant); |
| 870 | if (instant >= iCutover) { |
| 871 | // Only adjust if gap fully crossed. |
| 872 | if (instant - iGapDuration >= iCutover) { |
| 873 | instant = julianToGregorian(instant); |
| 874 | } |
| 875 | } |
| 876 | } |
| 877 | return instant; |
| 878 | } |
| 879 | |
| 880 | public int getMaximumTextLength(Locale locale) { |
| 881 | return Math.max(iJulianField.getMaximumTextLength(locale), |
| 882 | iGregorianField.getMaximumTextLength(locale)); |
| 883 | } |
| 884 | |
| 885 | public int getMaximumShortTextLength(Locale locale) { |
| 886 | return Math.max(iJulianField.getMaximumShortTextLength(locale), |
| 887 | iGregorianField.getMaximumShortTextLength(locale)); |
| 888 | } |
| 889 | |
| 890 | protected long julianToGregorian(long instant) { |
| 891 | if (iConvertByWeekyear) { |
| 892 | return julianToGregorianByWeekyear(instant); |
| 893 | } else { |
| 894 | return julianToGregorianByYear(instant); |
| 895 | } |
| 896 | } |
| 897 | |
| 898 | protected long gregorianToJulian(long instant) { |
| 899 | if (iConvertByWeekyear) { |
| 900 | return gregorianToJulianByWeekyear(instant); |
| 901 | } else { |
| 902 | return gregorianToJulianByYear(instant); |
| 903 | } |
| 904 | } |
| 905 | } |
| 906 | |
| 907 | //----------------------------------------------------------------------- |
| 908 | /** |
| 909 | * Cutover field for variable length fields. These fields internally call |
| 910 | * set whenever add is called. As a result, the same correction applied to |
| 911 | * set must be applied to add and addWrapField. Knowing when to use this |
| 912 | * field requires specific knowledge of how the GJ fields are implemented. |
| 913 | */ |
| 914 | private final class ImpreciseCutoverField extends CutoverField { |
| 915 | private static final long serialVersionUID = 3410248757173576441L; |
| 916 | |
| 917 | /** |
| 918 | * Creates a duration field that links back to this. |
| 919 | */ |
| 920 | ImpreciseCutoverField(DateTimeField julianField, DateTimeField gregorianField, long cutoverMillis) { |
| 921 | this(julianField, gregorianField, null, cutoverMillis, false); |
| 922 | } |
| 923 | |
| 924 | /** |
| 925 | * Uses a shared duration field rather than creating a new one. |
| 926 | * |
| 927 | * @param durationField shared duration field |
| 928 | */ |
| 929 | ImpreciseCutoverField(DateTimeField julianField, DateTimeField gregorianField, |
| 930 | DurationField durationField, long cutoverMillis) |
| 931 | { |
| 932 | this(julianField, gregorianField, durationField, cutoverMillis, false); |
| 933 | } |
| 934 | |
| 935 | /** |
| 936 | * Uses a shared duration field rather than creating a new one. |
| 937 | * |
| 938 | * @param durationField shared duration field |
| 939 | */ |
| 940 | ImpreciseCutoverField(DateTimeField julianField, DateTimeField gregorianField, |
| 941 | DurationField durationField, |
| 942 | long cutoverMillis, boolean convertByWeekyear) |
| 943 | { |
| 944 | super(julianField, gregorianField, cutoverMillis, convertByWeekyear); |
| 945 | if (durationField == null) { |
| 946 | durationField = new LinkedDurationField(iDurationField, this); |
| 947 | } |
| 948 | iDurationField = durationField; |
| 949 | } |
| 950 | |
| 951 | public long add(long instant, int value) { |
| 952 | if (instant >= iCutover) { |
| 953 | instant = iGregorianField.add(instant, value); |
| 954 | if (instant < iCutover) { |
| 955 | // Only adjust if gap fully crossed. |
| 956 | if (instant + iGapDuration < iCutover) { |
| 957 | instant = gregorianToJulian(instant); |
| 958 | } |
| 959 | } |
| 960 | } else { |
| 961 | instant = iJulianField.add(instant, value); |
| 962 | if (instant >= iCutover) { |
| 963 | // Only adjust if gap fully crossed. |
| 964 | if (instant - iGapDuration >= iCutover) { |
| 965 | instant = julianToGregorian(instant); |
| 966 | } |
| 967 | } |
| 968 | } |
| 969 | return instant; |
| 970 | } |
| 971 | |
| 972 | public long add(long instant, long value) { |
| 973 | if (instant >= iCutover) { |
| 974 | instant = iGregorianField.add(instant, value); |
| 975 | if (instant < iCutover) { |
| 976 | // Only adjust if gap fully crossed. |
| 977 | if (instant + iGapDuration < iCutover) { |
| 978 | instant = gregorianToJulian(instant); |
| 979 | } |
| 980 | } |
| 981 | } else { |
| 982 | instant = iJulianField.add(instant, value); |
| 983 | if (instant >= iCutover) { |
| 984 | // Only adjust if gap fully crossed. |
| 985 | if (instant - iGapDuration >= iCutover) { |
| 986 | instant = julianToGregorian(instant); |
| 987 | } |
| 988 | } |
| 989 | } |
| 990 | return instant; |
| 991 | } |
| 992 | |
| 993 | public int getDifference(long minuendInstant, long subtrahendInstant) { |
| 994 | if (minuendInstant >= iCutover) { |
| 995 | if (subtrahendInstant >= iCutover) { |
| 996 | return iGregorianField.getDifference(minuendInstant, subtrahendInstant); |
| 997 | } |
| 998 | // Remember, the add is being reversed. Since subtrahend is |
| 999 | // Julian, convert minuend to Julian to match. |
| 1000 | minuendInstant = gregorianToJulian(minuendInstant); |
| 1001 | return iJulianField.getDifference(minuendInstant, subtrahendInstant); |
| 1002 | } else { |
| 1003 | if (subtrahendInstant < iCutover) { |
| 1004 | return iJulianField.getDifference(minuendInstant, subtrahendInstant); |
| 1005 | } |
| 1006 | // Remember, the add is being reversed. Since subtrahend is |
| 1007 | // Gregorian, convert minuend to Gregorian to match. |
| 1008 | minuendInstant = julianToGregorian(minuendInstant); |
| 1009 | return iGregorianField.getDifference(minuendInstant, subtrahendInstant); |
| 1010 | } |
| 1011 | } |
| 1012 | |
| 1013 | public long getDifferenceAsLong(long minuendInstant, long subtrahendInstant) { |
| 1014 | if (minuendInstant >= iCutover) { |
| 1015 | if (subtrahendInstant >= iCutover) { |
| 1016 | return iGregorianField.getDifferenceAsLong(minuendInstant, subtrahendInstant); |
| 1017 | } |
| 1018 | // Remember, the add is being reversed. Since subtrahend is |
| 1019 | // Julian, convert minuend to Julian to match. |
| 1020 | minuendInstant = gregorianToJulian(minuendInstant); |
| 1021 | return iJulianField.getDifferenceAsLong(minuendInstant, subtrahendInstant); |
| 1022 | } else { |
| 1023 | if (subtrahendInstant < iCutover) { |
| 1024 | return iJulianField.getDifferenceAsLong(minuendInstant, subtrahendInstant); |
| 1025 | } |
| 1026 | // Remember, the add is being reversed. Since subtrahend is |
| 1027 | // Gregorian, convert minuend to Gregorian to match. |
| 1028 | minuendInstant = julianToGregorian(minuendInstant); |
| 1029 | return iGregorianField.getDifferenceAsLong(minuendInstant, subtrahendInstant); |
| 1030 | } |
| 1031 | } |
| 1032 | |
| 1033 | // Since the imprecise fields have durations longer than the gap |
| 1034 | // duration, keep these methods simple. The inherited implementations |
| 1035 | // produce incorrect results. |
| 1036 | // |
| 1037 | // Degenerate case: If this field is a month, and the cutover is set |
| 1038 | // far into the future, then the gap duration may be so large as to |
| 1039 | // reduce the number of months in a year. If the missing month(s) are |
| 1040 | // at the beginning or end of the year, then the minimum and maximum |
| 1041 | // values are not 1 and 12. I don't expect this case to ever occur. |
| 1042 | |
| 1043 | public int getMinimumValue(long instant) { |
| 1044 | if (instant >= iCutover) { |
| 1045 | return iGregorianField.getMinimumValue(instant); |
| 1046 | } else { |
| 1047 | return iJulianField.getMinimumValue(instant); |
| 1048 | } |
| 1049 | } |
| 1050 | |
| 1051 | public int getMaximumValue(long instant) { |
| 1052 | if (instant >= iCutover) { |
| 1053 | return iGregorianField.getMaximumValue(instant); |
| 1054 | } else { |
| 1055 | return iJulianField.getMaximumValue(instant); |
| 1056 | } |
| 1057 | } |
| 1058 | } |
| 1059 | |
| 1060 | //----------------------------------------------------------------------- |
| 1061 | /** |
| 1062 | * Links the duration back to a ImpreciseCutoverField. |
| 1063 | */ |
| 1064 | private static class LinkedDurationField extends DecoratedDurationField { |
| 1065 | private static final long serialVersionUID = 4097975388007713084L; |
| 1066 | |
| 1067 | private final ImpreciseCutoverField iField; |
| 1068 | |
| 1069 | LinkedDurationField(DurationField durationField, ImpreciseCutoverField dateTimeField) { |
| 1070 | super(durationField, durationField.getType()); |
| 1071 | iField = dateTimeField; |
| 1072 | } |
| 1073 | |
| 1074 | public long add(long instant, int value) { |
| 1075 | return iField.add(instant, value); |
| 1076 | } |
| 1077 | |
| 1078 | public long add(long instant, long value) { |
| 1079 | return iField.add(instant, value); |
| 1080 | } |
| 1081 | |
| 1082 | public int getDifference(long minuendInstant, long subtrahendInstant) { |
| 1083 | return iField.getDifference(minuendInstant, subtrahendInstant); |
| 1084 | } |
| 1085 | |
| 1086 | public long getDifferenceAsLong(long minuendInstant, long subtrahendInstant) { |
| 1087 | return iField.getDifferenceAsLong(minuendInstant, subtrahendInstant); |
| 1088 | } |
| 1089 | } |
| 1090 | |
| 1091 | } |