1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.kernel.scheduler;
24  
25  import com.liferay.portal.kernel.util.StringPool;
26  
27  import java.util.Calendar;
28  
29  /**
30   * <a href="TriggerExpression.java.html"><b><i>View Source</i></b></a>
31   *
32   * @author Thiago Moreira
33   *
34   */
35  public class TriggerExpression {
36  
37      public final static int DAILY_FREQUENCY = 3;
38  
39      public final static int MINUTELY_FREQUENCY = 2;
40  
41      public final static int MONTHLY_FREQUENCY = 4;
42  
43      public final static int NO_FREQUENCY = 1;
44  
45      public final static int WEEKLY_FREQUENCY = 5;
46  
47      public final static int YEARLY_FREQUENCY = 6;
48  
49      public TriggerExpression(Calendar startDate) {
50          this(startDate, TriggerExpression.NO_FREQUENCY, 0);
51      }
52  
53      public TriggerExpression(Calendar startDate, int frequency, int interval) {
54          _startDate = startDate;
55          setFrequency(frequency);
56          _interval = interval;
57      }
58  
59      public int getFrequency() {
60          return _frequency;
61      }
62  
63      public int getInterval() {
64          return _interval;
65      }
66  
67      public Calendar getStartDate() {
68          return _startDate;
69      }
70  
71      public void setFrequency(int frequency) {
72          if ((frequency != TriggerExpression.DAILY_FREQUENCY) &&
73              (frequency != TriggerExpression.MINUTELY_FREQUENCY) &&
74              (frequency != TriggerExpression.MONTHLY_FREQUENCY) &&
75              (frequency != TriggerExpression.NO_FREQUENCY) &&
76              (frequency != TriggerExpression.WEEKLY_FREQUENCY) &&
77              (frequency != TriggerExpression.YEARLY_FREQUENCY)) {
78  
79              throw new IllegalArgumentException(String.valueOf(frequency));
80          }
81  
82          _frequency = frequency;
83      }
84  
85      public void setInterval(int interval) {
86          _interval = interval;
87      }
88  
89      public void setStartDate(Calendar startDate) {
90          _startDate = startDate;
91      }
92  
93      public String toCronText() {
94          String second = String.valueOf(_startDate.get(Calendar.SECOND));
95          String minute = String.valueOf(_startDate.get(Calendar.MINUTE));
96          String hour = String.valueOf(_startDate.get(Calendar.HOUR_OF_DAY));
97          String dayOfMonth =
98              String.valueOf(_startDate.get(Calendar.DAY_OF_MONTH));
99          String month = String.valueOf(_startDate.get(Calendar.MONTH) + 1);
100         String dayOfWeek = String.valueOf(_startDate.get(Calendar.DAY_OF_WEEK));
101         String year = String.valueOf(_startDate.get(Calendar.YEAR));
102 
103         if (_frequency == TriggerExpression.NO_FREQUENCY) {
104             dayOfWeek = StringPool.QUESTION;
105         }
106         else if (_frequency == TriggerExpression.MINUTELY_FREQUENCY) {
107             minute += StringPool.FORWARD_SLASH + _interval;
108             hour = StringPool.STAR;
109             dayOfMonth = StringPool.STAR;
110             month = StringPool.STAR;
111             dayOfWeek = StringPool.QUESTION;
112             year = StringPool.STAR;
113         }
114         else if (_frequency == TriggerExpression.DAILY_FREQUENCY) {
115             dayOfMonth += StringPool.FORWARD_SLASH + _interval;
116             month = StringPool.STAR;
117             dayOfWeek = StringPool.QUESTION;
118             year = StringPool.STAR;
119         }
120         else if (_frequency == TriggerExpression.WEEKLY_FREQUENCY) {
121             dayOfMonth += StringPool.FORWARD_SLASH + (_interval * 7);
122             month = StringPool.STAR;
123             dayOfWeek = StringPool.QUESTION;
124             year = StringPool.STAR;
125         }
126         else if (_frequency == TriggerExpression.MONTHLY_FREQUENCY) {
127             month += StringPool.FORWARD_SLASH + _interval;
128             dayOfWeek = StringPool.QUESTION;
129             year = StringPool.STAR;
130         }
131         else if (_frequency == TriggerExpression.YEARLY_FREQUENCY) {
132             dayOfWeek = StringPool.QUESTION;
133             year += StringPool.FORWARD_SLASH + _interval;
134         }
135 
136         StringBuilder sb = new StringBuilder();
137 
138         sb.append(second);
139         sb.append(StringPool.SPACE);
140         sb.append(minute);
141         sb.append(StringPool.SPACE);
142         sb.append(hour);
143         sb.append(StringPool.SPACE);
144         sb.append(dayOfMonth);
145         sb.append(StringPool.SPACE);
146         sb.append(month);
147         sb.append(StringPool.SPACE);
148         sb.append(dayOfWeek);
149         sb.append(StringPool.SPACE);
150         sb.append(year);
151 
152         return sb.toString();
153     }
154 
155     private Calendar _startDate;
156     private int _frequency;
157     private int _interval;
158 
159 }