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