/[projects]/miscJava/Test3/src/dk/thoerup/schedulesamples/TimedEjb.java
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revision 1279 by torben, Thu Apr 7 20:20:04 2011 UTC revision 1280 by torben, Thu Apr 7 21:17:29 2011 UTC
# Line 1  Line 1 
1  package dk.thoerup.schedulesamples;  package dk.thoerup.schedulesamples;
2    
3    import java.util.Calendar;
4    import java.util.Date;
5    
6    import javax.annotation.Resource;
7    import javax.ejb.ScheduleExpression;
8    import javax.ejb.SessionContext;
9  import javax.ejb.Stateless;  import javax.ejb.Stateless;
10  import javax.ejb.TimedObject;  import javax.ejb.TimedObject;
11  import javax.ejb.Timer;  import javax.ejb.Timer;
12    import javax.ejb.TimerService;
13    
14    /* GFv3: before using a timed bean make sure the ejb timer service is correctly configured with a datasource and the timer table is created
15     * cd /inst/glassfishv3/glassfish/domains/domain1/lib/databases/ejbtimer
16     * /usr/lib/jvm/java-6-sun/db/bin/ij
17     * connect 'jdbc:derby:.';
18     * paste content from /home/torben/inst/glassfishv3/glassfish/lib/install/databases/ejbtimer_derby.sql
19     *
20     * */
21    
22  @Stateless  @Stateless
23  public class TimedEjb /*implements TimedObject*/ {  public class TimedEjb implements TimedObject {
24    
25            @Resource
26            private SessionContext sessionCtx;
27    
28                    
29            public void startTimer() {
30                    TimerService timerService = sessionCtx.getTimerService();
31                    
32                    Calendar now = Calendar.getInstance();
33                    //Timer timer = timerService.createTimer( (5 * 1000), null); //singleshot timer
34                    //timerService.createTimer(10*1000, 5000, null); //repeating timer
35                    
36                    // otherwise use schedule expression to create more complex schedules
37                    // in this case fire once every minute when the seconds is == 10
38                    ScheduleExpression se = new ScheduleExpression().second(10).minute("*").hour("*");
39                    
40                    System.out.println(se.toString());
41                    timerService.createCalendarTimer( se );  
42            }
43            
44            @Override
45          public void ejbTimeout(Timer timer) {          public void ejbTimeout(Timer timer) {
46                  System.out.print("timeout ....");                  System.out.print("timeout ....");
                   
47          }          }
48    
49  }  }
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