1 /*
2 * Copyright 2001-2009 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.ReadWritablePeriod;
21 import org.joda.time.ReadableDuration;
22
23 /**
24 * ReadableDurationConverter extracts milliseconds and chronology from a ReadableDuration.
25 *
26 * @author Stephen Colebourne
27 * @author Brian S O'Neill
28 * @since 1.0
29 */
30 class ReadableDurationConverter extends AbstractConverter
31 implements DurationConverter, PeriodConverter {
32
33 /**
34 * Singleton instance.
35 */
36 static final ReadableDurationConverter INSTANCE = new ReadableDurationConverter();
37
38 /**
39 * Restricted constructor.
40 */
41 protected ReadableDurationConverter() {
42 super();
43 }
44
45 //-----------------------------------------------------------------------
46 /**
47 * Extracts the millis from an object of this convertor's type.
48 *
49 * @param object the object to convert, must not be null
50 * @return the millisecond value
51 * @throws NullPointerException if the object is null
52 * @throws ClassCastException if the object is an invalid type
53 * @throws IllegalArgumentException if the object is invalid
54 */
55 public long getDurationMillis(Object object) {
56 return ((ReadableDuration) object).getMillis();
57 }
58
59 //-----------------------------------------------------------------------
60 /**
61 * Extracts duration values from an object of this converter's type, and
62 * sets them into the given ReadWritableDuration.
63 *
64 * @param writablePeriod period to get modified
65 * @param object the object to convert, must not be null
66 * @param chrono the chronology to use, must not be null
67 * @throws NullPointerException if the duration or object is null
68 * @throws ClassCastException if the object is an invalid type
69 * @throws IllegalArgumentException if the object is invalid
70 */
71 public void setInto(ReadWritablePeriod writablePeriod, Object object, Chronology chrono) {
72 ReadableDuration dur = (ReadableDuration) object;
73 chrono = DateTimeUtils.getChronology(chrono);
74 long duration = dur.getMillis();
75 int[] values = chrono.get(writablePeriod, duration);
76 for (int i = 0; i < values.length; i++) {
77 writablePeriod.setValue(i, values[i]);
78 }
79 }
80
81 //-----------------------------------------------------------------------
82 /**
83 * Returns ReadableDuration.class.
84 *
85 * @return ReadableDuration.class
86 */
87 public Class<?> getSupportedType() {
88 return ReadableDuration.class;
89 }
90
91 }