| 1 | /* |
| 2 | * Copyright 2001-2007 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.base; |
| 17 | |
| 18 | import java.io.Serializable; |
| 19 | |
| 20 | import org.joda.time.Chronology; |
| 21 | import org.joda.time.DateTimeUtils; |
| 22 | import org.joda.time.Duration; |
| 23 | import org.joda.time.DurationFieldType; |
| 24 | import org.joda.time.MutablePeriod; |
| 25 | import org.joda.time.PeriodType; |
| 26 | import org.joda.time.ReadWritablePeriod; |
| 27 | import org.joda.time.ReadableDuration; |
| 28 | import org.joda.time.ReadableInstant; |
| 29 | import org.joda.time.ReadablePartial; |
| 30 | import org.joda.time.ReadablePeriod; |
| 31 | import org.joda.time.convert.ConverterManager; |
| 32 | import org.joda.time.convert.PeriodConverter; |
| 33 | import org.joda.time.field.FieldUtils; |
| 34 | |
| 35 | /** |
| 36 | * BasePeriod is an abstract implementation of ReadablePeriod that stores |
| 37 | * data in a <code>PeriodType</code> and an <code>int[]</code>. |
| 38 | * <p> |
| 39 | * This class should generally not be used directly by API users. |
| 40 | * The {@link ReadablePeriod} interface should be used when different |
| 41 | * kinds of period objects are to be referenced. |
| 42 | * <p> |
| 43 | * BasePeriod subclasses may be mutable and not thread-safe. |
| 44 | * |
| 45 | * @author Brian S O'Neill |
| 46 | * @author Stephen Colebourne |
| 47 | * @since 1.0 |
| 48 | */ |
| 49 | public abstract class BasePeriod |
| 50 | extends AbstractPeriod |
| 51 | implements ReadablePeriod, Serializable { |
| 52 | |
| 53 | /** Serialization version */ |
| 54 | private static final long serialVersionUID = -2110953284060001145L; |
| 55 | |
| 56 | /** The type of period */ |
| 57 | private PeriodType iType; |
| 58 | /** The values */ |
| 59 | private int[] iValues; |
| 60 | |
| 61 | //----------------------------------------------------------------------- |
| 62 | /** |
| 63 | * Creates a period from a set of field values. |
| 64 | * |
| 65 | * @param years amount of years in this period, which must be zero if unsupported |
| 66 | * @param months amount of months in this period, which must be zero if unsupported |
| 67 | * @param weeks amount of weeks in this period, which must be zero if unsupported |
| 68 | * @param days amount of days in this period, which must be zero if unsupported |
| 69 | * @param hours amount of hours in this period, which must be zero if unsupported |
| 70 | * @param minutes amount of minutes in this period, which must be zero if unsupported |
| 71 | * @param seconds amount of seconds in this period, which must be zero if unsupported |
| 72 | * @param millis amount of milliseconds in this period, which must be zero if unsupported |
| 73 | * @param type which set of fields this period supports |
| 74 | * @throws IllegalArgumentException if period type is invalid |
| 75 | * @throws IllegalArgumentException if an unsupported field's value is non-zero |
| 76 | */ |
| 77 | protected BasePeriod(int years, int months, int weeks, int days, |
| 78 | int hours, int minutes, int seconds, int millis, |
| 79 | PeriodType type) { |
| 80 | super(); |
| 81 | type = checkPeriodType(type); |
| 82 | iType = type; |
| 83 | setPeriodInternal(years, months, weeks, days, hours, minutes, seconds, millis); // internal method |
| 84 | } |
| 85 | |
| 86 | /** |
| 87 | * Creates a period from the given interval endpoints. |
| 88 | * |
| 89 | * @param startInstant interval start, in milliseconds |
| 90 | * @param endInstant interval end, in milliseconds |
| 91 | * @param type which set of fields this period supports, null means standard |
| 92 | * @param chrono the chronology to use, null means ISO default |
| 93 | * @throws IllegalArgumentException if period type is invalid |
| 94 | */ |
| 95 | protected BasePeriod(long startInstant, long endInstant, PeriodType type, Chronology chrono) { |
| 96 | super(); |
| 97 | type = checkPeriodType(type); |
| 98 | chrono = DateTimeUtils.getChronology(chrono); |
| 99 | iType = type; |
| 100 | iValues = chrono.get(this, startInstant, endInstant); |
| 101 | } |
| 102 | |
| 103 | /** |
| 104 | * Creates a period from the given interval endpoints. |
| 105 | * |
| 106 | * @param startInstant interval start, null means now |
| 107 | * @param endInstant interval end, null means now |
| 108 | * @param type which set of fields this period supports, null means standard |
| 109 | * @throws IllegalArgumentException if period type is invalid |
| 110 | */ |
| 111 | protected BasePeriod(ReadableInstant startInstant, ReadableInstant endInstant, PeriodType type) { |
| 112 | super(); |
| 113 | type = checkPeriodType(type); |
| 114 | if (startInstant == null && endInstant == null) { |
| 115 | iType = type; |
| 116 | iValues = new int[size()]; |
| 117 | } else { |
| 118 | long startMillis = DateTimeUtils.getInstantMillis(startInstant); |
| 119 | long endMillis = DateTimeUtils.getInstantMillis(endInstant); |
| 120 | Chronology chrono = DateTimeUtils.getIntervalChronology(startInstant, endInstant); |
| 121 | iType = type; |
| 122 | iValues = chrono.get(this, startMillis, endMillis); |
| 123 | } |
| 124 | } |
| 125 | |
| 126 | /** |
| 127 | * Creates a period from the given duration and end point. |
| 128 | * <p> |
| 129 | * The two partials must contain the same fields, thus you can |
| 130 | * specify two <code>LocalDate</code> objects, or two <code>LocalTime</code> |
| 131 | * objects, but not one of each. |
| 132 | * As these are Partial objects, time zones have no effect on the result. |
| 133 | * <p> |
| 134 | * The two partials must also both be contiguous - see |
| 135 | * {@link DateTimeUtils#isContiguous(ReadablePartial)} for a |
| 136 | * definition. Both <code>LocalDate</code> and <code>LocalTime</code> are contiguous. |
| 137 | * |
| 138 | * @param start the start of the period, must not be null |
| 139 | * @param end the end of the period, must not be null |
| 140 | * @param type which set of fields this period supports, null means standard |
| 141 | * @throws IllegalArgumentException if the partials are null or invalid |
| 142 | * @since 1.1 |
| 143 | */ |
| 144 | protected BasePeriod(ReadablePartial start, ReadablePartial end, PeriodType type) { |
| 145 | super(); |
| 146 | if (start == null || end == null) { |
| 147 | throw new IllegalArgumentException("ReadablePartial objects must not be null"); |
| 148 | } |
| 149 | if (start instanceof BaseLocal && end instanceof BaseLocal && start.getClass() == end.getClass()) { |
| 150 | // for performance |
| 151 | type = checkPeriodType(type); |
| 152 | long startMillis = ((BaseLocal) start).getLocalMillis(); |
| 153 | long endMillis = ((BaseLocal) end).getLocalMillis(); |
| 154 | Chronology chrono = start.getChronology(); |
| 155 | chrono = DateTimeUtils.getChronology(chrono); |
| 156 | iType = type; |
| 157 | iValues = chrono.get(this, startMillis, endMillis); |
| 158 | } else { |
| 159 | if (start.size() != end.size()) { |
| 160 | throw new IllegalArgumentException("ReadablePartial objects must have the same set of fields"); |
| 161 | } |
| 162 | for (int i = 0, isize = start.size(); i < isize; i++) { |
| 163 | if (start.getFieldType(i) != end.getFieldType(i)) { |
| 164 | throw new IllegalArgumentException("ReadablePartial objects must have the same set of fields"); |
| 165 | } |
| 166 | } |
| 167 | if (DateTimeUtils.isContiguous(start) == false) { |
| 168 | throw new IllegalArgumentException("ReadablePartial objects must be contiguous"); |
| 169 | } |
| 170 | iType = checkPeriodType(type); |
| 171 | Chronology chrono = DateTimeUtils.getChronology(start.getChronology()).withUTC(); |
| 172 | iValues = chrono.get(this, chrono.set(start, 0L), chrono.set(end, 0L)); |
| 173 | } |
| 174 | } |
| 175 | |
| 176 | /** |
| 177 | * Creates a period from the given start point and duration. |
| 178 | * |
| 179 | * @param startInstant the interval start, null means now |
| 180 | * @param duration the duration of the interval, null means zero-length |
| 181 | * @param type which set of fields this period supports, null means standard |
| 182 | */ |
| 183 | protected BasePeriod(ReadableInstant startInstant, ReadableDuration duration, PeriodType type) { |
| 184 | super(); |
| 185 | type = checkPeriodType(type); |
| 186 | long startMillis = DateTimeUtils.getInstantMillis(startInstant); |
| 187 | long durationMillis = DateTimeUtils.getDurationMillis(duration); |
| 188 | long endMillis = FieldUtils.safeAdd(startMillis, durationMillis); |
| 189 | Chronology chrono = DateTimeUtils.getInstantChronology(startInstant); |
| 190 | iType = type; |
| 191 | iValues = chrono.get(this, startMillis, endMillis); |
| 192 | } |
| 193 | |
| 194 | /** |
| 195 | * Creates a period from the given duration and end point. |
| 196 | * |
| 197 | * @param duration the duration of the interval, null means zero-length |
| 198 | * @param endInstant the interval end, null means now |
| 199 | * @param type which set of fields this period supports, null means standard |
| 200 | */ |
| 201 | protected BasePeriod(ReadableDuration duration, ReadableInstant endInstant, PeriodType type) { |
| 202 | super(); |
| 203 | type = checkPeriodType(type); |
| 204 | long durationMillis = DateTimeUtils.getDurationMillis(duration); |
| 205 | long endMillis = DateTimeUtils.getInstantMillis(endInstant); |
| 206 | long startMillis = FieldUtils.safeSubtract(endMillis, durationMillis); |
| 207 | Chronology chrono = DateTimeUtils.getInstantChronology(endInstant); |
| 208 | iType = type; |
| 209 | iValues = chrono.get(this, startMillis, endMillis); |
| 210 | } |
| 211 | |
| 212 | /** |
| 213 | * Creates a period from the given millisecond duration, which is only really |
| 214 | * suitable for durations less than one day. |
| 215 | * <p> |
| 216 | * Only fields that are precise will be used. |
| 217 | * Thus the largest precise field may have a large value. |
| 218 | * |
| 219 | * @param duration the duration, in milliseconds |
| 220 | * @param type which set of fields this period supports, null means standard |
| 221 | * @param chrono the chronology to use, null means ISO default |
| 222 | * @throws IllegalArgumentException if period type is invalid |
| 223 | */ |
| 224 | protected BasePeriod(long duration, PeriodType type, Chronology chrono) { |
| 225 | super(); |
| 226 | type = checkPeriodType(type); |
| 227 | chrono = DateTimeUtils.getChronology(chrono); |
| 228 | iType = type; |
| 229 | iValues = chrono.get(this, duration); |
| 230 | } |
| 231 | |
| 232 | /** |
| 233 | * Creates a new period based on another using the {@link ConverterManager}. |
| 234 | * |
| 235 | * @param period the period to convert |
| 236 | * @param type which set of fields this period supports, null means use type from object |
| 237 | * @param chrono the chronology to use, null means ISO default |
| 238 | * @throws IllegalArgumentException if period is invalid |
| 239 | * @throws IllegalArgumentException if an unsupported field's value is non-zero |
| 240 | */ |
| 241 | protected BasePeriod(Object period, PeriodType type, Chronology chrono) { |
| 242 | super(); |
| 243 | PeriodConverter converter = ConverterManager.getInstance().getPeriodConverter(period); |
| 244 | type = (type == null ? converter.getPeriodType(period) : type); |
| 245 | type = checkPeriodType(type); |
| 246 | iType = type; |
| 247 | if (this instanceof ReadWritablePeriod) { |
| 248 | iValues = new int[size()]; |
| 249 | chrono = DateTimeUtils.getChronology(chrono); |
| 250 | converter.setInto((ReadWritablePeriod) this, period, chrono); |
| 251 | } else { |
| 252 | iValues = new MutablePeriod(period, type, chrono).getValues(); |
| 253 | } |
| 254 | } |
| 255 | |
| 256 | /** |
| 257 | * Constructor used when we trust ourselves. |
| 258 | * Do not expose publically. |
| 259 | * |
| 260 | * @param values the values to use, not null, not cloned |
| 261 | * @param type which set of fields this period supports, not null |
| 262 | */ |
| 263 | protected BasePeriod(int[] values, PeriodType type) { |
| 264 | super(); |
| 265 | iType = type; |
| 266 | iValues = values; |
| 267 | } |
| 268 | |
| 269 | //----------------------------------------------------------------------- |
| 270 | /** |
| 271 | * Validates a period type, converting nulls to a default value and |
| 272 | * checking the type is suitable for this instance. |
| 273 | * |
| 274 | * @param type the type to check, may be null |
| 275 | * @return the validated type to use, not null |
| 276 | * @throws IllegalArgumentException if the period type is invalid |
| 277 | */ |
| 278 | protected PeriodType checkPeriodType(PeriodType type) { |
| 279 | return DateTimeUtils.getPeriodType(type); |
| 280 | } |
| 281 | |
| 282 | //----------------------------------------------------------------------- |
| 283 | /** |
| 284 | * Gets the period type. |
| 285 | * |
| 286 | * @return the period type |
| 287 | */ |
| 288 | public PeriodType getPeriodType() { |
| 289 | return iType; |
| 290 | } |
| 291 | |
| 292 | //----------------------------------------------------------------------- |
| 293 | /** |
| 294 | * Gets the number of fields that this period supports. |
| 295 | * |
| 296 | * @return the number of fields supported |
| 297 | */ |
| 298 | public int size() { |
| 299 | return iType.size(); |
| 300 | } |
| 301 | |
| 302 | /** |
| 303 | * Gets the field type at the specified index. |
| 304 | * |
| 305 | * @param index the index to retrieve |
| 306 | * @return the field at the specified index |
| 307 | * @throws IndexOutOfBoundsException if the index is invalid |
| 308 | */ |
| 309 | public DurationFieldType getFieldType(int index) { |
| 310 | return iType.getFieldType(index); |
| 311 | } |
| 312 | |
| 313 | /** |
| 314 | * Gets the value at the specified index. |
| 315 | * |
| 316 | * @param index the index to retrieve |
| 317 | * @return the value of the field at the specified index |
| 318 | * @throws IndexOutOfBoundsException if the index is invalid |
| 319 | */ |
| 320 | public int getValue(int index) { |
| 321 | return iValues[index]; |
| 322 | } |
| 323 | |
| 324 | //----------------------------------------------------------------------- |
| 325 | /** |
| 326 | * Gets the total millisecond duration of this period relative to a start instant. |
| 327 | * <p> |
| 328 | * This method adds the period to the specified instant in order to |
| 329 | * calculate the duration. |
| 330 | * <p> |
| 331 | * An instant must be supplied as the duration of a period varies. |
| 332 | * For example, a period of 1 month could vary between the equivalent of |
| 333 | * 28 and 31 days in milliseconds due to different length months. |
| 334 | * Similarly, a day can vary at Daylight Savings cutover, typically between |
| 335 | * 23 and 25 hours. |
| 336 | * |
| 337 | * @param startInstant the instant to add the period to, thus obtaining the duration |
| 338 | * @return the total length of the period as a duration relative to the start instant |
| 339 | * @throws ArithmeticException if the millis exceeds the capacity of the duration |
| 340 | */ |
| 341 | public Duration toDurationFrom(ReadableInstant startInstant) { |
| 342 | long startMillis = DateTimeUtils.getInstantMillis(startInstant); |
| 343 | Chronology chrono = DateTimeUtils.getInstantChronology(startInstant); |
| 344 | long endMillis = chrono.add(this, startMillis, 1); |
| 345 | return new Duration(startMillis, endMillis); |
| 346 | } |
| 347 | |
| 348 | /** |
| 349 | * Gets the total millisecond duration of this period relative to an |
| 350 | * end instant. |
| 351 | * <p> |
| 352 | * This method subtracts the period from the specified instant in order |
| 353 | * to calculate the duration. |
| 354 | * <p> |
| 355 | * An instant must be supplied as the duration of a period varies. |
| 356 | * For example, a period of 1 month could vary between the equivalent of |
| 357 | * 28 and 31 days in milliseconds due to different length months. |
| 358 | * Similarly, a day can vary at Daylight Savings cutover, typically between |
| 359 | * 23 and 25 hours. |
| 360 | * |
| 361 | * @param endInstant the instant to subtract the period from, thus obtaining the duration |
| 362 | * @return the total length of the period as a duration relative to the end instant |
| 363 | * @throws ArithmeticException if the millis exceeds the capacity of the duration |
| 364 | */ |
| 365 | public Duration toDurationTo(ReadableInstant endInstant) { |
| 366 | long endMillis = DateTimeUtils.getInstantMillis(endInstant); |
| 367 | Chronology chrono = DateTimeUtils.getInstantChronology(endInstant); |
| 368 | long startMillis = chrono.add(this, endMillis, -1); |
| 369 | return new Duration(startMillis, endMillis); |
| 370 | } |
| 371 | |
| 372 | //----------------------------------------------------------------------- |
| 373 | /** |
| 374 | * Checks whether a field type is supported, and if so adds the new value |
| 375 | * to the relevent index in the specified array. |
| 376 | * |
| 377 | * @param type the field type |
| 378 | * @param values the array to update |
| 379 | * @param newValue the new value to store if successful |
| 380 | */ |
| 381 | private void checkAndUpdate(DurationFieldType type, int[] values, int newValue) { |
| 382 | int index = indexOf(type); |
| 383 | if (index == -1) { |
| 384 | if (newValue != 0) { |
| 385 | throw new IllegalArgumentException( |
| 386 | "Period does not support field '" + type.getName() + "'"); |
| 387 | } |
| 388 | } else { |
| 389 | values[index] = newValue; |
| 390 | } |
| 391 | } |
| 392 | |
| 393 | //----------------------------------------------------------------------- |
| 394 | /** |
| 395 | * Sets all the fields of this period from another. |
| 396 | * |
| 397 | * @param period the period to copy from, not null |
| 398 | * @throws IllegalArgumentException if an unsupported field's value is non-zero |
| 399 | */ |
| 400 | protected void setPeriod(ReadablePeriod period) { |
| 401 | if (period == null) { |
| 402 | setValues(new int[size()]); |
| 403 | } else { |
| 404 | setPeriodInternal(period); |
| 405 | } |
| 406 | } |
| 407 | |
| 408 | /** |
| 409 | * Private method called from constructor. |
| 410 | */ |
| 411 | private void setPeriodInternal(ReadablePeriod period) { |
| 412 | int[] newValues = new int[size()]; |
| 413 | for (int i = 0, isize = period.size(); i < isize; i++) { |
| 414 | DurationFieldType type = period.getFieldType(i); |
| 415 | int value = period.getValue(i); |
| 416 | checkAndUpdate(type, newValues, value); |
| 417 | } |
| 418 | iValues = newValues; |
| 419 | } |
| 420 | |
| 421 | /** |
| 422 | * Sets the eight standard the fields in one go. |
| 423 | * |
| 424 | * @param years amount of years in this period, which must be zero if unsupported |
| 425 | * @param months amount of months in this period, which must be zero if unsupported |
| 426 | * @param weeks amount of weeks in this period, which must be zero if unsupported |
| 427 | * @param days amount of days in this period, which must be zero if unsupported |
| 428 | * @param hours amount of hours in this period, which must be zero if unsupported |
| 429 | * @param minutes amount of minutes in this period, which must be zero if unsupported |
| 430 | * @param seconds amount of seconds in this period, which must be zero if unsupported |
| 431 | * @param millis amount of milliseconds in this period, which must be zero if unsupported |
| 432 | * @throws IllegalArgumentException if an unsupported field's value is non-zero |
| 433 | */ |
| 434 | protected void setPeriod(int years, int months, int weeks, int days, |
| 435 | int hours, int minutes, int seconds, int millis) { |
| 436 | setPeriodInternal(years, months, weeks, days, hours, minutes, seconds, millis); |
| 437 | } |
| 438 | |
| 439 | /** |
| 440 | * Private method called from constructor. |
| 441 | */ |
| 442 | private void setPeriodInternal(int years, int months, int weeks, int days, |
| 443 | int hours, int minutes, int seconds, int millis) { |
| 444 | int[] newValues = new int[size()]; |
| 445 | checkAndUpdate(DurationFieldType.years(), newValues, years); |
| 446 | checkAndUpdate(DurationFieldType.months(), newValues, months); |
| 447 | checkAndUpdate(DurationFieldType.weeks(), newValues, weeks); |
| 448 | checkAndUpdate(DurationFieldType.days(), newValues, days); |
| 449 | checkAndUpdate(DurationFieldType.hours(), newValues, hours); |
| 450 | checkAndUpdate(DurationFieldType.minutes(), newValues, minutes); |
| 451 | checkAndUpdate(DurationFieldType.seconds(), newValues, seconds); |
| 452 | checkAndUpdate(DurationFieldType.millis(), newValues, millis); |
| 453 | iValues = newValues; |
| 454 | } |
| 455 | |
| 456 | //----------------------------------------------------------------------- |
| 457 | /** |
| 458 | * Sets the value of a field in this period. |
| 459 | * |
| 460 | * @param field the field to set |
| 461 | * @param value the value to set |
| 462 | * @throws IllegalArgumentException if field is is null or not supported. |
| 463 | */ |
| 464 | protected void setField(DurationFieldType field, int value) { |
| 465 | setFieldInto(iValues, field, value); |
| 466 | } |
| 467 | |
| 468 | /** |
| 469 | * Sets the value of a field in this period. |
| 470 | * |
| 471 | * @param values the array of values to update |
| 472 | * @param field the field to set |
| 473 | * @param value the value to set |
| 474 | * @throws IllegalArgumentException if field is null or not supported. |
| 475 | */ |
| 476 | protected void setFieldInto(int[] values, DurationFieldType field, int value) { |
| 477 | int index = indexOf(field); |
| 478 | if (index == -1) { |
| 479 | if (value != 0 || field == null) { |
| 480 | throw new IllegalArgumentException( |
| 481 | "Period does not support field '" + field + "'"); |
| 482 | } |
| 483 | } else { |
| 484 | values[index] = value; |
| 485 | } |
| 486 | } |
| 487 | |
| 488 | /** |
| 489 | * Adds the value of a field in this period. |
| 490 | * |
| 491 | * @param field the field to set |
| 492 | * @param value the value to set |
| 493 | * @throws IllegalArgumentException if field is is null or not supported. |
| 494 | */ |
| 495 | protected void addField(DurationFieldType field, int value) { |
| 496 | addFieldInto(iValues, field, value); |
| 497 | } |
| 498 | |
| 499 | /** |
| 500 | * Adds the value of a field in this period. |
| 501 | * |
| 502 | * @param values the array of values to update |
| 503 | * @param field the field to set |
| 504 | * @param value the value to set |
| 505 | * @throws IllegalArgumentException if field is is null or not supported. |
| 506 | */ |
| 507 | protected void addFieldInto(int[] values, DurationFieldType field, int value) { |
| 508 | int index = indexOf(field); |
| 509 | if (index == -1) { |
| 510 | if (value != 0 || field == null) { |
| 511 | throw new IllegalArgumentException( |
| 512 | "Period does not support field '" + field + "'"); |
| 513 | } |
| 514 | } else { |
| 515 | values[index] = FieldUtils.safeAdd(values[index], value); |
| 516 | } |
| 517 | } |
| 518 | |
| 519 | /** |
| 520 | * Merges the fields from another period. |
| 521 | * |
| 522 | * @param period the period to add from, not null |
| 523 | * @throws IllegalArgumentException if an unsupported field's value is non-zero |
| 524 | */ |
| 525 | protected void mergePeriod(ReadablePeriod period) { |
| 526 | if (period != null) { |
| 527 | iValues = mergePeriodInto(getValues(), period); |
| 528 | } |
| 529 | } |
| 530 | |
| 531 | /** |
| 532 | * Merges the fields from another period. |
| 533 | * |
| 534 | * @param values the array of values to update |
| 535 | * @param period the period to add from, not null |
| 536 | * @return the updated values |
| 537 | * @throws IllegalArgumentException if an unsupported field's value is non-zero |
| 538 | */ |
| 539 | protected int[] mergePeriodInto(int[] values, ReadablePeriod period) { |
| 540 | for (int i = 0, isize = period.size(); i < isize; i++) { |
| 541 | DurationFieldType type = period.getFieldType(i); |
| 542 | int value = period.getValue(i); |
| 543 | checkAndUpdate(type, values, value); |
| 544 | } |
| 545 | return values; |
| 546 | } |
| 547 | |
| 548 | /** |
| 549 | * Adds the fields from another period. |
| 550 | * |
| 551 | * @param period the period to add from, not null |
| 552 | * @throws IllegalArgumentException if an unsupported field's value is non-zero |
| 553 | */ |
| 554 | protected void addPeriod(ReadablePeriod period) { |
| 555 | if (period != null) { |
| 556 | iValues = addPeriodInto(getValues(), period); |
| 557 | } |
| 558 | } |
| 559 | |
| 560 | /** |
| 561 | * Adds the fields from another period. |
| 562 | * |
| 563 | * @param values the array of values to update |
| 564 | * @param period the period to add from, not null |
| 565 | * @return the updated values |
| 566 | * @throws IllegalArgumentException if an unsupported field's value is non-zero |
| 567 | */ |
| 568 | protected int[] addPeriodInto(int[] values, ReadablePeriod period) { |
| 569 | for (int i = 0, isize = period.size(); i < isize; i++) { |
| 570 | DurationFieldType type = period.getFieldType(i); |
| 571 | int value = period.getValue(i); |
| 572 | if (value != 0) { |
| 573 | int index = indexOf(type); |
| 574 | if (index == -1) { |
| 575 | throw new IllegalArgumentException( |
| 576 | "Period does not support field '" + type.getName() + "'"); |
| 577 | } else { |
| 578 | values[index] = FieldUtils.safeAdd(getValue(index), value); |
| 579 | } |
| 580 | } |
| 581 | } |
| 582 | return values; |
| 583 | } |
| 584 | |
| 585 | //----------------------------------------------------------------------- |
| 586 | /** |
| 587 | * Sets the value of the field at the specifed index. |
| 588 | * |
| 589 | * @param index the index |
| 590 | * @param value the value to set |
| 591 | * @throws IndexOutOfBoundsException if the index is invalid |
| 592 | */ |
| 593 | protected void setValue(int index, int value) { |
| 594 | iValues[index] = value; |
| 595 | } |
| 596 | |
| 597 | /** |
| 598 | * Sets the values of all fields. |
| 599 | * |
| 600 | * @param values the array of values |
| 601 | */ |
| 602 | protected void setValues(int[] values) { |
| 603 | iValues = values; |
| 604 | } |
| 605 | |
| 606 | } |