DateConverter


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 java.util.Date  ;
19  
20  import org.joda.time.Chronology;
21  
22  /**
23   * DateConverter converts a java util Date to an instant or partial.
24   * The Date is converted to milliseconds in the ISO chronology.
25   *
26   * @author Stephen Colebourne
27   * @since 1.0
28   */
29  final class DateConverter extends AbstractConverter
30          implements InstantConverter, PartialConverter {
31  
32      /**
33       * Singleton instance.
34       */
35      static final DateConverter INSTANCE = new DateConverter();
36  
37      /**
38       * Restricted constructor.
39       */
40      protected DateConverter() {
41          super();
42      }
43  
44      //-----------------------------------------------------------------------
45      /**
46       * Gets the millis, which is the Date millis value.
47       * 
48       * @param object  the Date to convert, must not be null
49       * @param chrono  the non-null result of getChronology
50       * @return the millisecond value
51       * @throws NullPointerException if the object is null
52       * @throws ClassCastException if the object is an invalid type
53       */
54      public long getInstantMillis(Object   object, Chronology chrono) {
55          Date   date = (Date  ) object;
56          return date.getTime();
57      }
58  
59      //-----------------------------------------------------------------------
60      /**
61       * Returns Date.class.
62       * 
63       * @return Date.class
64       */
65      public Class   getSupportedType() {
66          return Date  .class;
67      }
68  
69  }
70
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