| 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.convert; |
| 17 | |
| 18 | import org.joda.time.Chronology; |
| 19 | import org.joda.time.DateTimeUtils; |
| 20 | import org.joda.time.ReadWritableInterval; |
| 21 | import org.joda.time.ReadWritablePeriod; |
| 22 | import org.joda.time.ReadableInterval; |
| 23 | |
| 24 | /** |
| 25 | * Converts intervals into durations of any requested period type. |
| 26 | * |
| 27 | * @author Brian S O'Neill |
| 28 | * @since 1.0 |
| 29 | */ |
| 30 | class ReadableIntervalConverter extends AbstractConverter |
| 31 | implements IntervalConverter, DurationConverter, PeriodConverter { |
| 32 | |
| 33 | /** |
| 34 | * Singleton instance. |
| 35 | */ |
| 36 | static final ReadableIntervalConverter INSTANCE = new ReadableIntervalConverter(); |
| 37 | |
| 38 | /** |
| 39 | * Restricted constructor. |
| 40 | */ |
| 41 | protected ReadableIntervalConverter() { |
| 42 | super(); |
| 43 | } |
| 44 | |
| 45 | //----------------------------------------------------------------------- |
| 46 | /** |
| 47 | * Gets the millisecond length of the interval. |
| 48 | * |
| 49 | * @param object the interval |
| 50 | */ |
| 51 | public long getDurationMillis(Object object) { |
| 52 | return (((ReadableInterval) object)).toDurationMillis(); |
| 53 | } |
| 54 | |
| 55 | //----------------------------------------------------------------------- |
| 56 | /** |
| 57 | * Sets the values of the mutable duration from the specified interval. |
| 58 | * |
| 59 | * @param writablePeriod the period to modify |
| 60 | * @param object the interval to set from |
| 61 | * @param chrono the chronology to use |
| 62 | */ |
| 63 | public void setInto(ReadWritablePeriod writablePeriod, Object object, Chronology chrono) { |
| 64 | ReadableInterval interval = (ReadableInterval) object; |
| 65 | chrono = (chrono != null ? chrono : DateTimeUtils.getIntervalChronology(interval)); |
| 66 | long start = interval.getStartMillis(); |
| 67 | long end = interval.getEndMillis(); |
| 68 | int[] values = chrono.get(writablePeriod, start, end); |
| 69 | for (int i = 0; i < values.length; i++) { |
| 70 | writablePeriod.setValue(i, values[i]); |
| 71 | } |
| 72 | } |
| 73 | |
| 74 | //----------------------------------------------------------------------- |
| 75 | /** |
| 76 | * Checks if the input is a ReadableInterval. |
| 77 | * <p> |
| 78 | * If it is, then the calling code should cast and copy the fields directly. |
| 79 | * |
| 80 | * @param object the object to convert, must not be null |
| 81 | * @param chrono the chronology to use, may be null |
| 82 | * @return true if the input is a ReadableInterval |
| 83 | * @throws ClassCastException if the object is invalid |
| 84 | */ |
| 85 | public boolean isReadableInterval(Object object, Chronology chrono) { |
| 86 | return true; |
| 87 | } |
| 88 | |
| 89 | /** |
| 90 | * Extracts interval endpoint values from an object of this converter's |
| 91 | * type, and sets them into the given ReadWritableInterval. |
| 92 | * |
| 93 | * @param writableInterval interval to get modified, not null |
| 94 | * @param object the object to convert, must not be null |
| 95 | * @param chrono the chronology to use, may be null |
| 96 | * @throws ClassCastException if the object is invalid |
| 97 | */ |
| 98 | public void setInto(ReadWritableInterval writableInterval, Object object, Chronology chrono) { |
| 99 | ReadableInterval input = (ReadableInterval) object; |
| 100 | writableInterval.setInterval(input); |
| 101 | if (chrono != null) { |
| 102 | writableInterval.setChronology(chrono); |
| 103 | } else { |
| 104 | writableInterval.setChronology(input.getChronology()); |
| 105 | } |
| 106 | } |
| 107 | |
| 108 | //----------------------------------------------------------------------- |
| 109 | /** |
| 110 | * Returns ReadableInterval.class. |
| 111 | */ |
| 112 | public Class getSupportedType() { |
| 113 | return ReadableInterval.class; |
| 114 | } |
| 115 | |
| 116 | } |