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1   /*
2    *  Licensed to the Apache Software Foundation (ASF) under one
3    *  or more contributor license agreements.  See the NOTICE file
4    *  distributed with this work for additional information
5    *  regarding copyright ownership.  The ASF licenses this file
6    *  to you under the Apache License, Version 2.0 (the
7    *  "License"); you may not use this file except in compliance
8    *  with the License.  You may obtain a copy of the License at
9    *
10   *    http://www.apache.org/licenses/LICENSE-2.0
11   *
12   *  Unless required by applicable law or agreed to in writing,
13   *  software distributed under the License is distributed on an
14   *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   *  KIND, either express or implied.  See the License for the
16   *  specific language governing permissions and limitations
17   *  under the License.
18   *
19   */
20  package org.apache.mina.integration.beans;
21  
22  import java.beans.PropertyEditor;
23  import java.text.DateFormat;
24  import java.text.ParseException;
25  import java.text.SimpleDateFormat;
26  import java.util.Date;
27  import java.util.Locale;
28  import java.util.regex.Pattern;
29  
30  /**
31   * A {@link PropertyEditor} which converts a {@link String} into
32   * a {@link Date} and vice versa.
33   *
34   * @author <a href="http://mina.apache.org">Apache MINA Project</a>
35   */
36  public class DateEditor extends AbstractPropertyEditor {
37      private static final Pattern MILLIS = Pattern.compile("[0-9][0-9]*");
38  
39      private final DateFormat[] formats = new DateFormat[] {
40              new SimpleDateFormat("EEE MMM dd HH:mm:ss zzz yyyy", Locale.ENGLISH),
41              new SimpleDateFormat("yyyy-MM-dd HH:mm:ss Z", Locale.ENGLISH),
42              new SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.ENGLISH),
43              new SimpleDateFormat("yyyy-MM-dd", Locale.ENGLISH), new SimpleDateFormat("yyyy-MM", Locale.ENGLISH),
44              new SimpleDateFormat("yyyy", Locale.ENGLISH), };
45  
46      public DateEditor() {
47          for (DateFormat f : formats) {
48              f.setLenient(true);
49          }
50      }
51  
52      @Override
53      protected String toText(Object value) {
54          if (value instanceof Number) {
55              long time = ((Number) value).longValue();
56              if (time <= 0) {
57                  return null;
58              }
59              value = new Date(time);
60          }
61          return formats[0].format((Date) value);
62      }
63  
64      @Override
65      protected Object toValue(String text) throws IllegalArgumentException {
66          if (MILLIS.matcher(text).matches()) {
67              long time = Long.parseLong(text);
68              if (time <= 0) {
69                  return null;
70              }
71              return new Date(time);
72          }
73  
74          for (DateFormat f : formats) {
75              try {
76                  return f.parse(text);
77              } catch (ParseException e) {
78              }
79          }
80  
81          throw new IllegalArgumentException("Wrong date: " + text);
82      }
83  }