thoerup/schedulesamples/TimedEjb.java

package dk.thoerup.schedulesamples;

import java.util.Calendar;
import java.util.Date;

import javax.annotation.Resource;
import javax.ejb.ScheduleExpression;
import javax.ejb.SessionContext;
import javax.ejb.Stateless;
import javax.ejb.TimedObject;
import javax.ejb.Timer;
import javax.ejb.TimerService;

/* GFv3: before using a timed bean make sure the ejb timer service is correctly configured with a datasource and the timer table is created
 * cd /inst/glassfishv3/glassfish/domains/domain1/lib/databases/ejbtimer 
 * /usr/lib/jvm/java-6-sun/db/bin/ij
 * connect 'jdbc:derby:.';
 * paste content from /home/torben/inst/glassfishv3/glassfish/lib/install/databases/ejbtimer_derby.sql 
 * 
 * */ 

//@Stateless
public class TimedEjb implements TimedObject {

        @Resource
        private SessionContext sessionCtx;
        int count;
        
        public void startTimer() {
                
                TimerService timerService = sessionCtx.getTimerService();
                

                //Timer timer = timerService.createTimer( (5 * 1000), null); //singleshot timer
                timerService.createTimer(10*1000, 5000, null); //repeating timer
                
                // otherwise use schedule expression to create more complex schedules
                // in this case fire once every minute when the seconds is == 10
                //ScheduleExpression se = new ScheduleExpression().second(10).minute("*").hour("*");            
                //System.out.println(se.toString());
                //timerService.createCalendarTimer( se );
                
                count = 0;
        }
        
        @Override
        public void ejbTimeout(Timer timer) {
                
                count++;
                
                System.out.print("timeout .... " + count);
                
                
                if (count >= 10) {
                        timer.cancel();
                }
        }

}
1	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;
10	import javax.ejb.TimedObject;
11	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
23	public class TimedEjb implements TimedObject {
24
25	@Resource
26	private SessionContext sessionCtx;
27	int count;
28
29	public void startTimer() {
30
31	TimerService timerService = sessionCtx.getTimerService();
32
33
34	//Timer timer = timerService.createTimer( (5 * 1000), null); //singleshot timer
35	timerService.createTimer(10*1000, 5000, null); //repeating timer
36
37	// otherwise use schedule expression to create more complex schedules
38	// in this case fire once every minute when the seconds is == 10
39	//ScheduleExpression se = new ScheduleExpression().second(10).minute("").hour("");
40	//System.out.println(se.toString());
41	//timerService.createCalendarTimer( se );
42
43	count = 0;
44	}
45
46	@Override
47	public void ejbTimeout(Timer timer) {
48
49	count++;
50
51	System.out.print("timeout .... " + count);
52
53
54	if (count >= 10) {
55	timer.cancel();
56	}
57	}
58
59	}