| 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 org.joda.time.DateTimeField; |
| 19 | import org.joda.time.DateTimeFieldType; |
| 20 | import org.joda.time.ReadablePartial; |
| 21 | import org.joda.time.field.DecoratedDateTimeField; |
| 22 | import org.joda.time.field.FieldUtils; |
| 23 | |
| 24 | /** |
| 25 | * Provides time calculations for the year of era component of time. |
| 26 | * |
| 27 | * @author Brian S O'Neill |
| 28 | * @since 1.0 |
| 29 | */ |
| 30 | final class GJYearOfEraDateTimeField extends DecoratedDateTimeField { |
| 31 | |
| 32 | private static final long serialVersionUID = -5961050944769862059L; |
| 33 | |
| 34 | private final BasicChronology iChronology; |
| 35 | |
| 36 | /** |
| 37 | * Restricted constructor. |
| 38 | */ |
| 39 | GJYearOfEraDateTimeField(DateTimeField yearField, BasicChronology chronology) { |
| 40 | super(yearField, DateTimeFieldType.yearOfEra()); |
| 41 | iChronology = chronology; |
| 42 | } |
| 43 | |
| 44 | public int get(long instant) { |
| 45 | int year = getWrappedField().get(instant); |
| 46 | if (year <= 0) { |
| 47 | year = 1 - year; |
| 48 | } |
| 49 | return year; |
| 50 | } |
| 51 | |
| 52 | public long add(long instant, int years) { |
| 53 | return getWrappedField().add(instant, years); |
| 54 | } |
| 55 | |
| 56 | public long add(long instant, long years) { |
| 57 | return getWrappedField().add(instant, years); |
| 58 | } |
| 59 | |
| 60 | public long addWrapField(long instant, int years) { |
| 61 | return getWrappedField().addWrapField(instant, years); |
| 62 | } |
| 63 | |
| 64 | public int[] addWrapField(ReadablePartial instant, int fieldIndex, int[] values, int years) { |
| 65 | return getWrappedField().addWrapField(instant, fieldIndex, values, years); |
| 66 | } |
| 67 | |
| 68 | public int getDifference(long minuendInstant, long subtrahendInstant) { |
| 69 | return getWrappedField().getDifference(minuendInstant, subtrahendInstant); |
| 70 | } |
| 71 | |
| 72 | public long getDifferenceAsLong(long minuendInstant, long subtrahendInstant) { |
| 73 | return getWrappedField().getDifferenceAsLong(minuendInstant, subtrahendInstant); |
| 74 | } |
| 75 | |
| 76 | /** |
| 77 | * Set the year component of the specified time instant. |
| 78 | * |
| 79 | * @param instant the time instant in millis to update. |
| 80 | * @param year the year (0,292278994) to update the time to. |
| 81 | * @return the updated time instant. |
| 82 | * @throws IllegalArgumentException if year is invalid. |
| 83 | */ |
| 84 | public long set(long instant, int year) { |
| 85 | FieldUtils.verifyValueBounds(this, year, 1, getMaximumValue()); |
| 86 | if (iChronology.getYear(instant) <= 0) { |
| 87 | year = 1 - year; |
| 88 | } |
| 89 | return super.set(instant, year); |
| 90 | } |
| 91 | |
| 92 | public int getMinimumValue() { |
| 93 | return 1; |
| 94 | } |
| 95 | |
| 96 | public int getMaximumValue() { |
| 97 | return getWrappedField().getMaximumValue(); |
| 98 | } |
| 99 | |
| 100 | public long roundFloor(long instant) { |
| 101 | return getWrappedField().roundFloor(instant); |
| 102 | } |
| 103 | |
| 104 | public long roundCeiling(long instant) { |
| 105 | return getWrappedField().roundCeiling(instant); |
| 106 | } |
| 107 | |
| 108 | public long remainder(long instant) { |
| 109 | return getWrappedField().remainder(instant); |
| 110 | } |
| 111 | |
| 112 | /** |
| 113 | * Serialization singleton |
| 114 | */ |
| 115 | private Object readResolve() { |
| 116 | return iChronology.yearOfEra(); |
| 117 | } |
| 118 | } |