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Java > Open Source Codes > org > joda > time > convert > LongConverter


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
20 /**
21  * LongConverter converts a Long to an instant, partial or duration.
22  * The Long value represents milliseconds in the ISO chronology.
23  *
24  * @author Stephen Colebourne
25  * @author Brian S O'Neill
26  * @since 1.0
27  */
28 class LongConverter extends AbstractConverter
29         implements InstantConverter, PartialConverter, DurationConverter {
30
31     /**
32      * Singleton instance.
33      */
34     static final LongConverter INSTANCE = new LongConverter();
35
36     /**
37      * Restricted constructor.
38      */
39     protected LongConverter() {
40         super();
41     }
42
43     //-----------------------------------------------------------------------
44 /**
45      * Gets the millisecond instant, which is the Long value.
46      *
47      * @param object the Long to convert, must not be null
48      * @param chrono the chronology to use, which is always non-null
49      * @return the millisecond value
50      * @throws NullPointerException if the object is null
51      * @throws ClassCastException if the object is an invalid type
52      */
53     public long getInstantMillis(Object JavaDoc object, Chronology chrono) {
54         return ((Long JavaDoc) object).longValue();
55     }
56
57     //-----------------------------------------------------------------------
58 /**
59      * Gets the millisecond duration, which is the Long value.
60      *
61      * @param object the Long to convert, must not be null
62      * @return the millisecond duration
63      * @throws NullPointerException if the object is null
64      * @throws ClassCastException if the object is an invalid type
65      */
66     public long getDurationMillis(Object JavaDoc object) {
67         return ((Long JavaDoc) object).longValue();
68     }
69
70     //-----------------------------------------------------------------------
71 /**
72      * Returns Long.class.
73      *
74      * @return Long.class
75      */
76     public Class JavaDoc getSupportedType() {
77         return Long JavaDoc.class;
78     }
79
80 }
81
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