thoerup/traininfoservice/StatisticsListener.java

package dk.thoerup.traininfoservice;

import java.util.Timer;
import java.util.TimerTask;

import javax.servlet.ServletContext;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;


public class StatisticsListener implements ServletContextListener {

        Timer timer = null;
        int update_interval;

    public void contextInitialized(ServletContextEvent sce) {
        
        update_interval = getUpdateInterval( sce.getServletContext() );
        if ( update_interval > 0 ) {
                timer =  new Timer();
                
                TimerTask statsUpdate = new TimerTask() {
                                @Override
                                public void run() {
                                        Statistics.getInstance().saveStats();
                                }
                };
                
                timer.schedule(statsUpdate, 0, update_interval);
        }
    }


    public void contextDestroyed(ServletContextEvent sce) {
        if ( update_interval > 0 ) {
                timer.cancel();
                Statistics.getInstance().saveStats();
        }
    }

    private int getUpdateInterval(ServletContext cntx) {
        int interval = 0;
        try {
                String intervalStr = cntx.getInitParameter("stats_interval");
                interval = Integer.parseInt(intervalStr);
        } catch (Exception e) {}
        
        return interval;
    }
}
1	torben	811	package dk.thoerup.traininfoservice;
2
3			import java.util.Timer;
4			import java.util.TimerTask;
5
6			import javax.servlet.ServletContext;
7			import javax.servlet.ServletContextEvent;
8			import javax.servlet.ServletContextListener;
9
10
11			public class StatisticsListener implements ServletContextListener {
12
13			Timer timer = null;
14			int update_interval;
15
16			public void contextInitialized(ServletContextEvent sce) {
17
18			update_interval = getUpdateInterval( sce.getServletContext() );
19			if ( update_interval > 0 ) {
20			timer = new Timer();
21
22			TimerTask statsUpdate = new TimerTask() {
23			@Override
24			public void run() {
25			Statistics.getInstance().saveStats();
26			}
27			};
28
29			timer.schedule(statsUpdate, 0, update_interval);
30			}
31			}
32
33
34			public void contextDestroyed(ServletContextEvent sce) {
35			if ( update_interval > 0 ) {
36			timer.cancel();
37	torben	814	Statistics.getInstance().saveStats();
38	torben	811	}
39			}
40
41			private int getUpdateInterval(ServletContext cntx) {
42			int interval = 0;
43			try {
44			String intervalStr = cntx.getInitParameter("stats_interval");
45			interval = Integer.parseInt(intervalStr);
46			} catch (Exception e) {}
47
48			return interval;
49			}
50			}