| 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.Locale; |
| 19 | |
| 20 | import org.joda.time.DateTimeConstants; |
| 21 | import org.joda.time.DateTimeFieldType; |
| 22 | import org.joda.time.DurationField; |
| 23 | import org.joda.time.DurationFieldType; |
| 24 | import org.joda.time.IllegalFieldValueException; |
| 25 | import org.joda.time.field.BaseDateTimeField; |
| 26 | import org.joda.time.field.FieldUtils; |
| 27 | import org.joda.time.field.UnsupportedDurationField; |
| 28 | |
| 29 | /** |
| 30 | * Provides time calculations for the coptic era component of time. |
| 31 | * |
| 32 | * @author Brian S O'Neill |
| 33 | * @author Stephen Colebourne |
| 34 | * @since 1.2, refactored from CopticEraDateTimeField |
| 35 | */ |
| 36 | final class BasicSingleEraDateTimeField extends BaseDateTimeField { |
| 37 | |
| 38 | /** |
| 39 | * Value of the era, which will be the same as DateTimeConstants.CE. |
| 40 | */ |
| 41 | private static final int ERA_VALUE = DateTimeConstants.CE; |
| 42 | /** |
| 43 | * Text value of the era. |
| 44 | */ |
| 45 | private final String iEraText; |
| 46 | |
| 47 | /** |
| 48 | * Restricted constructor. |
| 49 | */ |
| 50 | BasicSingleEraDateTimeField(String text) { |
| 51 | super(DateTimeFieldType.era()); |
| 52 | iEraText = text; |
| 53 | } |
| 54 | |
| 55 | /** @inheritDoc */ |
| 56 | public boolean isLenient() { |
| 57 | return false; |
| 58 | } |
| 59 | |
| 60 | /** @inheritDoc */ |
| 61 | public int get(long instant) { |
| 62 | return ERA_VALUE; |
| 63 | } |
| 64 | |
| 65 | /** @inheritDoc */ |
| 66 | public long set(long instant, int era) { |
| 67 | FieldUtils.verifyValueBounds(this, era, ERA_VALUE, ERA_VALUE); |
| 68 | return instant; |
| 69 | } |
| 70 | |
| 71 | /** @inheritDoc */ |
| 72 | public long set(long instant, String text, Locale locale) { |
| 73 | if (iEraText.equals(text) == false && "1".equals(text) == false) { |
| 74 | throw new IllegalFieldValueException(DateTimeFieldType.era(), text); |
| 75 | } |
| 76 | return instant; |
| 77 | } |
| 78 | |
| 79 | /** @inheritDoc */ |
| 80 | public long roundFloor(long instant) { |
| 81 | return Long.MIN_VALUE; |
| 82 | } |
| 83 | |
| 84 | /** @inheritDoc */ |
| 85 | public long roundCeiling(long instant) { |
| 86 | return Long.MAX_VALUE; |
| 87 | } |
| 88 | |
| 89 | /** @inheritDoc */ |
| 90 | public long roundHalfFloor(long instant) { |
| 91 | return Long.MIN_VALUE; |
| 92 | } |
| 93 | |
| 94 | /** @inheritDoc */ |
| 95 | public long roundHalfCeiling(long instant) { |
| 96 | return Long.MIN_VALUE; |
| 97 | } |
| 98 | |
| 99 | /** @inheritDoc */ |
| 100 | public long roundHalfEven(long instant) { |
| 101 | return Long.MIN_VALUE; |
| 102 | } |
| 103 | |
| 104 | /** @inheritDoc */ |
| 105 | public DurationField getDurationField() { |
| 106 | return UnsupportedDurationField.getInstance(DurationFieldType.eras()); |
| 107 | } |
| 108 | |
| 109 | /** @inheritDoc */ |
| 110 | public DurationField getRangeDurationField() { |
| 111 | return null; |
| 112 | } |
| 113 | |
| 114 | /** @inheritDoc */ |
| 115 | public int getMinimumValue() { |
| 116 | return ERA_VALUE; |
| 117 | } |
| 118 | |
| 119 | /** @inheritDoc */ |
| 120 | public int getMaximumValue() { |
| 121 | return ERA_VALUE; |
| 122 | } |
| 123 | |
| 124 | /** @inheritDoc */ |
| 125 | public String getAsText(int fieldValue, Locale locale) { |
| 126 | return iEraText; |
| 127 | } |
| 128 | |
| 129 | /** @inheritDoc */ |
| 130 | public int getMaximumTextLength(Locale locale) { |
| 131 | return iEraText.length(); |
| 132 | } |
| 133 | |
| 134 | } |