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.field.PreciseDurationDateTimeField;
24
25 /**
26 * GJDayOfWeekDateTimeField provides time calculations for the
27 * day of the week component of time.
28 *
29 * @since 1.0
30 * @author Guy Allard
31 * @author Stephen Colebourne
32 * @author Brian S O'Neill
33 */
34 final class GJDayOfWeekDateTimeField extends PreciseDurationDateTimeField {
35
36 /** Serialization version */
37 private static final long serialVersionUID = -3857947176719041436L;
38
39 private final BasicChronology iChronology;
40
41 /**
42 * Restricted constructor.
43 */
44 GJDayOfWeekDateTimeField(BasicChronology chronology, DurationField days) {
45 super(DateTimeFieldType.dayOfWeek(), days);
46 iChronology = chronology;
47 }
48
49 /**
50 * Get the value of the specified time instant.
51 *
52 * @param instant the time instant in millis to query
53 * @return the day of the week extracted from the input
54 */
55 public int get(long instant) {
56 return iChronology.getDayOfWeek(instant);
57 }
58
59 /**
60 * Get the textual value of the specified time instant.
61 *
62 * @param fieldValue the field value to query
63 * @param locale the locale to use
64 * @return the day of the week, such as 'Monday'
65 */
66 public String getAsText(int fieldValue, Locale locale) {
67 return GJLocaleSymbols.forLocale(locale).dayOfWeekValueToText(fieldValue);
68 }
69
70 /**
71 * Get the abbreviated textual value of the specified time instant.
72 *
73 * @param fieldValue the field value to query
74 * @param locale the locale to use
75 * @return the day of the week, such as 'Mon'
76 */
77 public String getAsShortText(int fieldValue, Locale locale) {
78 return GJLocaleSymbols.forLocale(locale).dayOfWeekValueToShortText(fieldValue);
79 }
80
81 /**
82 * Convert the specified text and locale into a value.
83 *
84 * @param text the text to convert
85 * @param locale the locale to convert using
86 * @return the value extracted from the text
87 * @throws IllegalArgumentException if the text is invalid
88 */
89 protected int convertText(String text, Locale locale) {
90 return GJLocaleSymbols.forLocale(locale).dayOfWeekTextToValue(text);
91 }
92
93 public DurationField getRangeDurationField() {
94 return iChronology.weeks();
95 }
96
97 /**
98 * Get the minimum value that this field can have.
99 *
100 * @return the field's minimum value
101 */
102 public int getMinimumValue() {
103 return DateTimeConstants.MONDAY;
104 }
105
106 /**
107 * Get the maximum value that this field can have.
108 *
109 * @return the field's maximum value
110 */
111 public int getMaximumValue() {
112 return DateTimeConstants.SUNDAY;
113 }
114
115 /**
116 * Get the maximum length of the text returned by this field.
117 *
118 * @param locale the locale to use
119 * @return the maximum textual length
120 */
121 public int getMaximumTextLength(Locale locale) {
122 return GJLocaleSymbols.forLocale(locale).getDayOfWeekMaxTextLength();
123 }
124
125 /**
126 * Get the maximum length of the abbreviated text returned by this field.
127 *
128 * @param locale the locale to use
129 * @return the maximum abbreviated textual length
130 */
131 public int getMaximumShortTextLength(Locale locale) {
132 return GJLocaleSymbols.forLocale(locale).getDayOfWeekMaxShortTextLength();
133 }
134
135 /**
136 * Serialization singleton
137 */
138 private Object readResolve() {
139 return iChronology.dayOfWeek();
140 }
141 }