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Java > Open Source Codes > org > joda > time > chrono > gj > TestGJMonthOfYearField


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.gj;
17
18 import org.joda.time.DateTimeFieldType;
19 import org.joda.time.DurationField;
20
21 /**
22  *
23  * @author Brian S O'Neill
24  */
25 class TestGJMonthOfYearField extends TestGJDateTimeField {
26     public TestGJMonthOfYearField(TestGJChronology chrono) {
27         super(DateTimeFieldType.monthOfYear(), chrono.millisPerMonth(), chrono);
28     }
29
30     public int get(long millis) {
31         return iChronology.gjFromMillis(millis)[1];
32     }
33
34     public long set(long millis, int value) {
35         long timeOnlyMillis = iChronology.getTimeOnlyMillis(millis);
36         int[] ymd = iChronology.gjFromMillis(millis);
37         // First set to start of month...
38 millis = iChronology.millisFromGJ(ymd[0], value, 1);
39         // ...and use dayOfMonth field to check range.
40 int maxDay = iChronology.dayOfMonth().getMaximumValue(millis);
41         if (ymd[2] > maxDay) {
42             ymd[2] = maxDay;
43         }
44         return timeOnlyMillis + iChronology.millisFromGJ(ymd[0], value, ymd[2]);
45     }
46
47     public long add(long millis, long value) {
48         int newYear = iChronology.year().get(millis)
49             + (int)TestGJChronology.div(value, 12);
50         int newMonth = get(millis) + (int)TestGJChronology.mod(value, 12);
51         if (newMonth > 12) {
52             newYear++;
53             newMonth -= 12;
54         }
55         int newDay = iChronology.dayOfMonth().get(millis);
56         millis = iChronology.getTimeOnlyMillis(millis)
57             + iChronology.millisFromGJ(newYear, newMonth, newDay);
58         while (get(millis) != newMonth) {
59             millis = iChronology.dayOfYear().add(millis, -1);
60         }
61         return millis;
62     }
63
64     public boolean isLeap(long millis) {
65         int[] ymd = iChronology.gjFromMillis(millis);
66         return ymd[1] == 2 && iChronology.isLeapYear(ymd[0]);
67     }
68
69     public int getLeapAmount(long millis) {
70         return isLeap(millis) ? 1 : 0;
71     }
72
73     public DurationField getLeapDurationField() {
74         return iChronology.days();
75     }
76
77     public DurationField getRangeDurationField() {
78         return iChronology.years();
79     }
80
81     public int getMinimumValue() {
82         return 1;
83     }
84
85     public int getMaximumValue() {
86         return 12;
87     }
88
89     public long roundFloor(long millis) {
90         int[] ymd = iChronology.gjFromMillis(millis);
91         return iChronology.millisFromGJ(ymd[0], ymd[1], 1);
92     }
93 }
94
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