KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > joda > time > chrono > BasicSingleEraDateTimeField


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 JavaDoc;
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 JavaDoc iEraText;
46
47     /**
48      * Restricted constructor.
49      */
50     BasicSingleEraDateTimeField(String JavaDoc 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 JavaDoc text, Locale JavaDoc 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 JavaDoc getAsText(int fieldValue, Locale JavaDoc locale) {
126         return iEraText;
127     }
128
129     /** @inheritDoc */
130     public int getMaximumTextLength(Locale JavaDoc locale) {
131         return iEraText.length();
132     }
133
134 }
135
Popular Tags