| 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.io.Serializable; |
| 19 | |
| 20 | import org.joda.time.Chronology; |
| 21 | import org.joda.time.DateTimeField; |
| 22 | import org.joda.time.DateTimeFieldType; |
| 23 | import org.joda.time.DateTimeZone; |
| 24 | import org.joda.time.DurationField; |
| 25 | import org.joda.time.DurationFieldType; |
| 26 | import org.joda.time.IllegalFieldValueException; |
| 27 | import org.joda.time.ReadablePartial; |
| 28 | import org.joda.time.ReadablePeriod; |
| 29 | import org.joda.time.field.FieldUtils; |
| 30 | import org.joda.time.field.UnsupportedDateTimeField; |
| 31 | import org.joda.time.field.UnsupportedDurationField; |
| 32 | |
| 33 | /** |
| 34 | * BaseChronology provides a skeleton implementation for chronology |
| 35 | * classes. Many utility methods are defined, but all fields are unsupported. |
| 36 | * <p> |
| 37 | * BaseChronology is thread-safe and immutable, and all subclasses must be |
| 38 | * as well. |
| 39 | * |
| 40 | * @author Brian S O'Neill |
| 41 | * @since 1.0 |
| 42 | */ |
| 43 | public abstract class BaseChronology |
| 44 | extends Chronology |
| 45 | implements Serializable { |
| 46 | |
| 47 | /** Serialization version. */ |
| 48 | private static final long serialVersionUID = -7310865996721419676L; |
| 49 | |
| 50 | /** |
| 51 | * Restricted constructor. |
| 52 | */ |
| 53 | protected BaseChronology() { |
| 54 | super(); |
| 55 | } |
| 56 | |
| 57 | /** |
| 58 | * Returns the DateTimeZone that this Chronology operates in, or null if |
| 59 | * unspecified. |
| 60 | * |
| 61 | * @return DateTimeZone null if unspecified |
| 62 | */ |
| 63 | public abstract DateTimeZone getZone(); |
| 64 | |
| 65 | /** |
| 66 | * Returns an instance of this Chronology that operates in the UTC time |
| 67 | * zone. Chronologies that do not operate in a time zone or are already |
| 68 | * UTC must return themself. |
| 69 | * |
| 70 | * @return a version of this chronology that ignores time zones |
| 71 | */ |
| 72 | public abstract Chronology withUTC(); |
| 73 | |
| 74 | /** |
| 75 | * Returns an instance of this Chronology that operates in any time zone. |
| 76 | * |
| 77 | * @return a version of this chronology with a specific time zone |
| 78 | * @param zone to use, or default if null |
| 79 | * @see org.joda.time.chrono.ZonedChronology |
| 80 | */ |
| 81 | public abstract Chronology withZone(DateTimeZone zone); |
| 82 | |
| 83 | /** |
| 84 | * Returns a datetime millisecond instant, formed from the given year, |
| 85 | * month, day, and millisecond values. The set of given values must refer |
| 86 | * to a valid datetime, or else an IllegalArgumentException is thrown. |
| 87 | * <p> |
| 88 | * The default implementation calls upon separate DateTimeFields to |
| 89 | * determine the result. Subclasses are encouraged to provide a more |
| 90 | * efficient implementation. |
| 91 | * |
| 92 | * @param year year to use |
| 93 | * @param monthOfYear month to use |
| 94 | * @param dayOfMonth day of month to use |
| 95 | * @param millisOfDay millisecond to use |
| 96 | * @return millisecond instant from 1970-01-01T00:00:00Z |
| 97 | */ |
| 98 | public long getDateTimeMillis(int year, int monthOfYear, int dayOfMonth, |
| 99 | int millisOfDay) |
| 100 | throws IllegalArgumentException |
| 101 | { |
| 102 | long instant = year().set(0, year); |
| 103 | instant = monthOfYear().set(instant, monthOfYear); |
| 104 | instant = dayOfMonth().set(instant, dayOfMonth); |
| 105 | return millisOfDay().set(instant, millisOfDay); |
| 106 | } |
| 107 | |
| 108 | /** |
| 109 | * Returns a datetime millisecond instant, formed from the given year, |
| 110 | * month, day, hour, minute, second, and millisecond values. The set of |
| 111 | * given values must refer to a valid datetime, or else an |
| 112 | * IllegalArgumentException is thrown. |
| 113 | * <p> |
| 114 | * The default implementation calls upon separate DateTimeFields to |
| 115 | * determine the result. Subclasses are encouraged to provide a more |
| 116 | * efficient implementation. |
| 117 | * |
| 118 | * @param year year to use |
| 119 | * @param monthOfYear month to use |
| 120 | * @param dayOfMonth day of month to use |
| 121 | * @param hourOfDay hour to use |
| 122 | * @param minuteOfHour minute to use |
| 123 | * @param secondOfMinute second to use |
| 124 | * @param millisOfSecond millisecond to use |
| 125 | * @return millisecond instant from 1970-01-01T00:00:00Z |
| 126 | */ |
| 127 | public long getDateTimeMillis(int year, int monthOfYear, int dayOfMonth, |
| 128 | int hourOfDay, int minuteOfHour, |
| 129 | int secondOfMinute, int millisOfSecond) |
| 130 | throws IllegalArgumentException |
| 131 | { |
| 132 | long instant = year().set(0, year); |
| 133 | instant = monthOfYear().set(instant, monthOfYear); |
| 134 | instant = dayOfMonth().set(instant, dayOfMonth); |
| 135 | instant = hourOfDay().set(instant, hourOfDay); |
| 136 | instant = minuteOfHour().set(instant, minuteOfHour); |
| 137 | instant = secondOfMinute().set(instant, secondOfMinute); |
| 138 | return millisOfSecond().set(instant, millisOfSecond); |
| 139 | } |
| 140 | |
| 141 | /** |
| 142 | * Returns a datetime millisecond instant, from from the given instant, |
| 143 | * hour, minute, second, and millisecond values. The set of given values |
| 144 | * must refer to a valid datetime, or else an IllegalArgumentException is |
| 145 | * thrown. |
| 146 | * <p> |
| 147 | * The default implementation calls upon separate DateTimeFields to |
| 148 | * determine the result. Subclasses are encouraged to provide a more |
| 149 | * efficient implementation. |
| 150 | * |
| 151 | * @param instant instant to start from |
| 152 | * @param hourOfDay hour to use |
| 153 | * @param minuteOfHour minute to use |
| 154 | * @param secondOfMinute second to use |
| 155 | * @param millisOfSecond millisecond to use |
| 156 | * @return millisecond instant from 1970-01-01T00:00:00Z |
| 157 | */ |
| 158 | public long getDateTimeMillis(long instant, |
| 159 | int hourOfDay, int minuteOfHour, |
| 160 | int secondOfMinute, int millisOfSecond) |
| 161 | throws IllegalArgumentException |
| 162 | { |
| 163 | instant = hourOfDay().set(instant, hourOfDay); |
| 164 | instant = minuteOfHour().set(instant, minuteOfHour); |
| 165 | instant = secondOfMinute().set(instant, secondOfMinute); |
| 166 | return millisOfSecond().set(instant, millisOfSecond); |
| 167 | } |
| 168 | |
| 169 | //----------------------------------------------------------------------- |
| 170 | /** |
| 171 | * Validates whether the fields stored in a partial instant are valid. |
| 172 | * <p> |
| 173 | * This implementation uses {@link DateTimeField#getMinimumValue(ReadablePartial, int[])} |
| 174 | * and {@link DateTimeField#getMaximumValue(ReadablePartial, int[])}. |
| 175 | * |
| 176 | * @param partial the partial instant to validate |
| 177 | * @param values the values to validate, not null |
| 178 | * @throws IllegalArgumentException if the instant is invalid |
| 179 | */ |
| 180 | public void validate(ReadablePartial partial, int[] values) { |
| 181 | // check values in standard range, catching really stupid cases like -1 |
| 182 | // this means that the second check will not hit trouble |
| 183 | int size = partial.size(); |
| 184 | for (int i = 0; i < size; i++) { |
| 185 | int value = values[i]; |
| 186 | DateTimeField field = partial.getField(i); |
| 187 | if (value < field.getMinimumValue()) { |
| 188 | throw new IllegalFieldValueException |
| 189 | (field.getType(), new Integer(value), |
| 190 | new Integer(field.getMinimumValue()), null); |
| 191 | } |
| 192 | if (value > field.getMaximumValue()) { |
| 193 | throw new IllegalFieldValueException |
| 194 | (field.getType(), new Integer(value), |
| 195 | null, new Integer(field.getMaximumValue())); |
| 196 | } |
| 197 | } |
| 198 | // check values in specific range, catching really odd cases like 30th Feb |
| 199 | for (int i = 0; i < size; i++) { |
| 200 | int value = values[i]; |
| 201 | DateTimeField field = partial.getField(i); |
| 202 | if (value < field.getMinimumValue(partial, values)) { |
| 203 | throw new IllegalFieldValueException |
| 204 | (field.getType(), new Integer(value), |
| 205 | new Integer(field.getMinimumValue(partial, values)), null); |
| 206 | } |
| 207 | if (value > field.getMaximumValue(partial, values)) { |
| 208 | throw new IllegalFieldValueException |
| 209 | (field.getType(), new Integer(value), |
| 210 | null, new Integer(field.getMaximumValue(partial, values))); |
| 211 | } |
| 212 | } |
| 213 | } |
| 214 | |
| 215 | /** |
| 216 | * Gets the values of a partial from an instant. |
| 217 | * |
| 218 | * @param partial the partial instant to use |
| 219 | * @param instant the instant to query |
| 220 | * @return the values of the partial extracted from the instant |
| 221 | */ |
| 222 | public int[] get(ReadablePartial partial, long instant) { |
| 223 | int size = partial.size(); |
| 224 | int[] values = new int[size]; |
| 225 | for (int i = 0; i < size; i++) { |
| 226 | values[i] = partial.getFieldType(i).getField(this).get(instant); |
| 227 | } |
| 228 | return values; |
| 229 | } |
| 230 | |
| 231 | /** |
| 232 | * Sets the partial into the instant. |
| 233 | * |
| 234 | * @param partial the partial instant to use |
| 235 | * @param instant the instant to update |
| 236 | * @return the updated instant |
| 237 | */ |
| 238 | public long set(ReadablePartial partial, long instant) { |
| 239 | for (int i = 0, isize = partial.size(); i < isize; i++) { |
| 240 | instant = partial.getFieldType(i).getField(this).set(instant, partial.getValue(i)); |
| 241 | } |
| 242 | return instant; |
| 243 | } |
| 244 | |
| 245 | //----------------------------------------------------------------------- |
| 246 | /** |
| 247 | * Gets the values of a period from an interval. |
| 248 | * |
| 249 | * @param period the period instant to use |
| 250 | * @param startInstant the start instant of an interval to query |
| 251 | * @param endInstant the start instant of an interval to query |
| 252 | * @return the values of the period extracted from the interval |
| 253 | */ |
| 254 | public int[] get(ReadablePeriod period, long startInstant, long endInstant) { |
| 255 | int size = period.size(); |
| 256 | int[] values = new int[size]; |
| 257 | if (startInstant != endInstant) { |
| 258 | for (int i = 0; i < size; i++) { |
| 259 | DurationField field = period.getFieldType(i).getField(this); |
| 260 | int value = field.getDifference(endInstant, startInstant); |
| 261 | startInstant = field.add(startInstant, value); |
| 262 | values[i] = value; |
| 263 | } |
| 264 | } |
| 265 | return values; |
| 266 | } |
| 267 | |
| 268 | /** |
| 269 | * Gets the values of a period from an interval. |
| 270 | * |
| 271 | * @param period the period instant to use |
| 272 | * @param duration the duration to query |
| 273 | * @return the values of the period extracted from the duration |
| 274 | */ |
| 275 | public int[] get(ReadablePeriod period, long duration) { |
| 276 | int size = period.size(); |
| 277 | int[] values = new int[size]; |
| 278 | if (duration != 0) { |
| 279 | long current = 0; |
| 280 | for (int i = 0; i < size; i++) { |
| 281 | DurationField field = period.getFieldType(i).getField(this); |
| 282 | if (field.isPrecise()) { |
| 283 | int value = field.getDifference(duration, current); |
| 284 | current = field.add(current, value); |
| 285 | values[i] = value; |
| 286 | } |
| 287 | } |
| 288 | } |
| 289 | return values; |
| 290 | } |
| 291 | |
| 292 | /** |
| 293 | * Adds the period to the instant, specifying the number of times to add. |
| 294 | * |
| 295 | * @param period the period to add, null means add nothing |
| 296 | * @param instant the instant to add to |
| 297 | * @param scalar the number of times to add |
| 298 | * @return the updated instant |
| 299 | */ |
| 300 | public long add(ReadablePeriod period, long instant, int scalar) { |
| 301 | if (scalar != 0 && period != null) { |
| 302 | for (int i = 0, isize = period.size(); i < isize; i++) { |
| 303 | long value = period.getValue(i); // use long to allow for multiplication (fits OK) |
| 304 | if (value != 0) { |
| 305 | instant = period.getFieldType(i).getField(this).add(instant, value * scalar); |
| 306 | } |
| 307 | } |
| 308 | } |
| 309 | return instant; |
| 310 | } |
| 311 | |
| 312 | //----------------------------------------------------------------------- |
| 313 | /** |
| 314 | * Adds the duration to the instant, specifying the number of times to add. |
| 315 | * |
| 316 | * @param instant the instant to add to |
| 317 | * @param duration the duration to add |
| 318 | * @param scalar the number of times to add |
| 319 | * @return the updated instant |
| 320 | */ |
| 321 | public long add(long instant, long duration, int scalar) { |
| 322 | if (duration == 0 || scalar == 0) { |
| 323 | return instant; |
| 324 | } |
| 325 | long add = FieldUtils.safeMultiply(duration, scalar); |
| 326 | return FieldUtils.safeAdd(instant, add); |
| 327 | } |
| 328 | |
| 329 | // Millis |
| 330 | //----------------------------------------------------------------------- |
| 331 | /** |
| 332 | * Get the millis duration field for this chronology. |
| 333 | * |
| 334 | * @return DurationField or UnsupportedDurationField if unsupported |
| 335 | */ |
| 336 | public DurationField millis() { |
| 337 | return UnsupportedDurationField.getInstance(DurationFieldType.millis()); |
| 338 | } |
| 339 | |
| 340 | /** |
| 341 | * Get the millis of second field for this chronology. |
| 342 | * |
| 343 | * @return DateTimeField or UnsupportedDateTimeField if unsupported |
| 344 | */ |
| 345 | public DateTimeField millisOfSecond() { |
| 346 | return UnsupportedDateTimeField.getInstance(DateTimeFieldType.millisOfSecond(), millis()); |
| 347 | } |
| 348 | |
| 349 | /** |
| 350 | * Get the millis of day field for this chronology. |
| 351 | * |
| 352 | * @return DateTimeField or UnsupportedDateTimeField if unsupported |
| 353 | */ |
| 354 | public DateTimeField millisOfDay() { |
| 355 | return UnsupportedDateTimeField.getInstance(DateTimeFieldType.millisOfDay(), millis()); |
| 356 | } |
| 357 | |
| 358 | // Second |
| 359 | //----------------------------------------------------------------------- |
| 360 | /** |
| 361 | * Get the seconds duration field for this chronology. |
| 362 | * |
| 363 | * @return DurationField or UnsupportedDurationField if unsupported |
| 364 | */ |
| 365 | public DurationField seconds() { |
| 366 | return UnsupportedDurationField.getInstance(DurationFieldType.seconds()); |
| 367 | } |
| 368 | |
| 369 | /** |
| 370 | * Get the second of minute field for this chronology. |
| 371 | * |
| 372 | * @return DateTimeField or UnsupportedDateTimeField if unsupported |
| 373 | */ |
| 374 | public DateTimeField secondOfMinute() { |
| 375 | return UnsupportedDateTimeField.getInstance(DateTimeFieldType.secondOfMinute(), seconds()); |
| 376 | } |
| 377 | |
| 378 | /** |
| 379 | * Get the second of day field for this chronology. |
| 380 | * |
| 381 | * @return DateTimeField or UnsupportedDateTimeField if unsupported |
| 382 | */ |
| 383 | public DateTimeField secondOfDay() { |
| 384 | return UnsupportedDateTimeField.getInstance(DateTimeFieldType.secondOfDay(), seconds()); |
| 385 | } |
| 386 | |
| 387 | // Minute |
| 388 | //----------------------------------------------------------------------- |
| 389 | /** |
| 390 | * Get the minutes duration field for this chronology. |
| 391 | * |
| 392 | * @return DurationField or UnsupportedDurationField if unsupported |
| 393 | */ |
| 394 | public DurationField minutes() { |
| 395 | return UnsupportedDurationField.getInstance(DurationFieldType.minutes()); |
| 396 | } |
| 397 | |
| 398 | /** |
| 399 | * Get the minute of hour field for this chronology. |
| 400 | * |
| 401 | * @return DateTimeField or UnsupportedDateTimeField if unsupported |
| 402 | */ |
| 403 | public DateTimeField minuteOfHour() { |
| 404 | return UnsupportedDateTimeField.getInstance(DateTimeFieldType.minuteOfHour(), minutes()); |
| 405 | } |
| 406 | |
| 407 | /** |
| 408 | * Get the minute of day field for this chronology. |
| 409 | * |
| 410 | * @return DateTimeField or UnsupportedDateTimeField if unsupported |
| 411 | */ |
| 412 | public DateTimeField minuteOfDay() { |
| 413 | return UnsupportedDateTimeField.getInstance(DateTimeFieldType.minuteOfDay(), minutes()); |
| 414 | } |
| 415 | |
| 416 | // Hour |
| 417 | //----------------------------------------------------------------------- |
| 418 | /** |
| 419 | * Get the hours duration field for this chronology. |
| 420 | * |
| 421 | * @return DurationField or UnsupportedDurationField if unsupported |
| 422 | */ |
| 423 | public DurationField hours() { |
| 424 | return UnsupportedDurationField.getInstance(DurationFieldType.hours()); |
| 425 | } |
| 426 | |
| 427 | /** |
| 428 | * Get the hour of day (0-23) field for this chronology. |
| 429 | * |
| 430 | * @return DateTimeField or UnsupportedDateTimeField if unsupported |
| 431 | */ |
| 432 | public DateTimeField hourOfDay() { |
| 433 | return UnsupportedDateTimeField.getInstance(DateTimeFieldType.hourOfDay(), hours()); |
| 434 | } |
| 435 | |
| 436 | /** |
| 437 | * Get the hour of day (offset to 1-24) field for this chronology. |
| 438 | * |
| 439 | * @return DateTimeField or UnsupportedDateTimeField if unsupported |
| 440 | */ |
| 441 | public DateTimeField clockhourOfDay() { |
| 442 | return UnsupportedDateTimeField.getInstance(DateTimeFieldType.clockhourOfDay(), hours()); |
| 443 | } |
| 444 | |
| 445 | // Halfday |
| 446 | //----------------------------------------------------------------------- |
| 447 | /** |
| 448 | * Get the halfdays duration field for this chronology. |
| 449 | * |
| 450 | * @return DurationField or UnsupportedDurationField if unsupported |
| 451 | */ |
| 452 | public DurationField halfdays() { |
| 453 | return UnsupportedDurationField.getInstance(DurationFieldType.halfdays()); |
| 454 | } |
| 455 | |
| 456 | /** |
| 457 | * Get the hour of am/pm (0-11) field for this chronology. |
| 458 | * |
| 459 | * @return DateTimeField or UnsupportedDateTimeField if unsupported |
| 460 | */ |
| 461 | public DateTimeField hourOfHalfday() { |
| 462 | return UnsupportedDateTimeField.getInstance(DateTimeFieldType.hourOfHalfday(), hours()); |
| 463 | } |
| 464 | |
| 465 | /** |
| 466 | * Get the hour of am/pm (offset to 1-12) field for this chronology. |
| 467 | * |
| 468 | * @return DateTimeField or UnsupportedDateTimeField if unsupported |
| 469 | */ |
| 470 | public DateTimeField clockhourOfHalfday() { |
| 471 | return UnsupportedDateTimeField.getInstance(DateTimeFieldType.clockhourOfHalfday(), hours()); |
| 472 | } |
| 473 | |
| 474 | /** |
| 475 | * Get the AM(0) PM(1) field for this chronology. |
| 476 | * |
| 477 | * @return DateTimeField or UnsupportedDateTimeField if unsupported |
| 478 | */ |
| 479 | public DateTimeField halfdayOfDay() { |
| 480 | return UnsupportedDateTimeField.getInstance(DateTimeFieldType.halfdayOfDay(), halfdays()); |
| 481 | } |
| 482 | |
| 483 | // Day |
| 484 | //----------------------------------------------------------------------- |
| 485 | /** |
| 486 | * Get the days duration field for this chronology. |
| 487 | * |
| 488 | * @return DurationField or UnsupportedDurationField if unsupported |
| 489 | */ |
| 490 | public DurationField days() { |
| 491 | return UnsupportedDurationField.getInstance(DurationFieldType.days()); |
| 492 | } |
| 493 | |
| 494 | /** |
| 495 | * Get the day of week field for this chronology. |
| 496 | * |
| 497 | * <p>DayOfWeek values are defined in |
| 498 | * {@link org.joda.time.DateTimeConstants DateTimeConstants}. |
| 499 | * They use the ISO definitions, where 1 is Monday and 7 is Sunday. |
| 500 | * |
| 501 | * @return DateTimeField or UnsupportedDateTimeField if unsupported |
| 502 | */ |
| 503 | public DateTimeField dayOfWeek() { |
| 504 | return UnsupportedDateTimeField.getInstance(DateTimeFieldType.dayOfWeek(), days()); |
| 505 | } |
| 506 | |
| 507 | /** |
| 508 | * Get the day of month field for this chronology. |
| 509 | * |
| 510 | * @return DateTimeField or UnsupportedDateTimeField if unsupported |
| 511 | */ |
| 512 | public DateTimeField dayOfMonth() { |
| 513 | return UnsupportedDateTimeField.getInstance(DateTimeFieldType.dayOfMonth(), days()); |
| 514 | } |
| 515 | |
| 516 | /** |
| 517 | * Get the day of year field for this chronology. |
| 518 | * |
| 519 | * @return DateTimeField or UnsupportedDateTimeField if unsupported |
| 520 | */ |
| 521 | public DateTimeField dayOfYear() { |
| 522 | return UnsupportedDateTimeField.getInstance(DateTimeFieldType.dayOfYear(), days()); |
| 523 | } |
| 524 | |
| 525 | // Week |
| 526 | //----------------------------------------------------------------------- |
| 527 | /** |
| 528 | * Get the weeks duration field for this chronology. |
| 529 | * |
| 530 | * @return DurationField or UnsupportedDurationField if unsupported |
| 531 | */ |
| 532 | public DurationField weeks() { |
| 533 | return UnsupportedDurationField.getInstance(DurationFieldType.weeks()); |
| 534 | } |
| 535 | |
| 536 | /** |
| 537 | * Get the week of a week based year field for this chronology. |
| 538 | * |
| 539 | * @return DateTimeField or UnsupportedDateTimeField if unsupported |
| 540 | */ |
| 541 | public DateTimeField weekOfWeekyear() { |
| 542 | return UnsupportedDateTimeField.getInstance(DateTimeFieldType.weekOfWeekyear(), weeks()); |
| 543 | } |
| 544 | |
| 545 | // Weekyear |
| 546 | //----------------------------------------------------------------------- |
| 547 | /** |
| 548 | * Get the weekyears duration field for this chronology. |
| 549 | * |
| 550 | * @return DurationField or UnsupportedDurationField if unsupported |
| 551 | */ |
| 552 | public DurationField weekyears() { |
| 553 | return UnsupportedDurationField.getInstance(DurationFieldType.weekyears()); |
| 554 | } |
| 555 | |
| 556 | /** |
| 557 | * Get the year of a week based year field for this chronology. |
| 558 | * |
| 559 | * @return DateTimeField or UnsupportedDateTimeField if unsupported |
| 560 | */ |
| 561 | public DateTimeField weekyear() { |
| 562 | return UnsupportedDateTimeField.getInstance(DateTimeFieldType.weekyear(), weekyears()); |
| 563 | } |
| 564 | |
| 565 | /** |
| 566 | * Get the year of a week based year in a century field for this chronology. |
| 567 | * |
| 568 | * @return DateTimeField or UnsupportedDateTimeField if unsupported |
| 569 | */ |
| 570 | public DateTimeField weekyearOfCentury() { |
| 571 | return UnsupportedDateTimeField.getInstance(DateTimeFieldType.weekyearOfCentury(), weekyears()); |
| 572 | } |
| 573 | |
| 574 | // Month |
| 575 | //----------------------------------------------------------------------- |
| 576 | /** |
| 577 | * Get the months duration field for this chronology. |
| 578 | * |
| 579 | * @return DurationField or UnsupportedDurationField if unsupported |
| 580 | */ |
| 581 | public DurationField months() { |
| 582 | return UnsupportedDurationField.getInstance(DurationFieldType.months()); |
| 583 | } |
| 584 | |
| 585 | /** |
| 586 | * Get the month of year field for this chronology. |
| 587 | * |
| 588 | * @return DateTimeField or UnsupportedDateTimeField if unsupported |
| 589 | */ |
| 590 | public DateTimeField monthOfYear() { |
| 591 | return UnsupportedDateTimeField.getInstance(DateTimeFieldType.monthOfYear(), months()); |
| 592 | } |
| 593 | |
| 594 | // Year |
| 595 | //----------------------------------------------------------------------- |
| 596 | /** |
| 597 | * Get the years duration field for this chronology. |
| 598 | * |
| 599 | * @return DurationField or UnsupportedDurationField if unsupported |
| 600 | */ |
| 601 | public DurationField years() { |
| 602 | return UnsupportedDurationField.getInstance(DurationFieldType.years()); |
| 603 | } |
| 604 | |
| 605 | /** |
| 606 | * Get the year field for this chronology. |
| 607 | * |
| 608 | * @return DateTimeField or UnsupportedDateTimeField if unsupported |
| 609 | */ |
| 610 | public DateTimeField year() { |
| 611 | return UnsupportedDateTimeField.getInstance(DateTimeFieldType.year(), years()); |
| 612 | } |
| 613 | |
| 614 | /** |
| 615 | * Get the year of era field for this chronology. |
| 616 | * |
| 617 | * @return DateTimeField or UnsupportedDateTimeField if unsupported |
| 618 | */ |
| 619 | public DateTimeField yearOfEra() { |
| 620 | return UnsupportedDateTimeField.getInstance(DateTimeFieldType.yearOfEra(), years()); |
| 621 | } |
| 622 | |
| 623 | /** |
| 624 | * Get the year of century field for this chronology. |
| 625 | * |
| 626 | * @return DateTimeField or UnsupportedDateTimeField if unsupported |
| 627 | */ |
| 628 | public DateTimeField yearOfCentury() { |
| 629 | return UnsupportedDateTimeField.getInstance(DateTimeFieldType.yearOfCentury(), years()); |
| 630 | } |
| 631 | |
| 632 | // Century |
| 633 | //----------------------------------------------------------------------- |
| 634 | /** |
| 635 | * Get the centuries duration field for this chronology. |
| 636 | * |
| 637 | * @return DurationField or UnsupportedDurationField if unsupported |
| 638 | */ |
| 639 | public DurationField centuries() { |
| 640 | return UnsupportedDurationField.getInstance(DurationFieldType.centuries()); |
| 641 | } |
| 642 | |
| 643 | /** |
| 644 | * Get the century of era field for this chronology. |
| 645 | * |
| 646 | * @return DateTimeField or UnsupportedDateTimeField if unsupported |
| 647 | */ |
| 648 | public DateTimeField centuryOfEra() { |
| 649 | return UnsupportedDateTimeField.getInstance(DateTimeFieldType.centuryOfEra(), centuries()); |
| 650 | } |
| 651 | |
| 652 | // Era |
| 653 | //----------------------------------------------------------------------- |
| 654 | /** |
| 655 | * Get the eras duration field for this chronology. |
| 656 | * |
| 657 | * @return DurationField or UnsupportedDurationField if unsupported |
| 658 | */ |
| 659 | public DurationField eras() { |
| 660 | return UnsupportedDurationField.getInstance(DurationFieldType.eras()); |
| 661 | } |
| 662 | |
| 663 | /** |
| 664 | * Get the era field for this chronology. |
| 665 | * |
| 666 | * @return DateTimeField or UnsupportedDateTimeField if unsupported |
| 667 | */ |
| 668 | public DateTimeField era() { |
| 669 | return UnsupportedDateTimeField.getInstance(DateTimeFieldType.era(), eras()); |
| 670 | } |
| 671 | |
| 672 | //----------------------------------------------------------------------- |
| 673 | /** |
| 674 | * Gets a debugging toString. |
| 675 | * |
| 676 | * @return a debugging string |
| 677 | */ |
| 678 | public abstract String toString(); |
| 679 | |
| 680 | } |