thoerup/traininfoservice/SettingsListener.java

package dk.thoerup.traininfoservice;

import java.util.logging.Logger;

import javax.servlet.ServletContext;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import javax.servlet.ServletRegistration;
import javax.servlet.annotation.WebListener;

import dk.thoerup.webconfig.ConfigServlet;


/**
 * Application Lifecycle Listener implementation class JmxListener
 *
 */
@WebListener
public class SettingsListener implements ServletContextListener {

        Logger logger = Logger.getLogger(SettingsListener.class.getName());


        /**
     * @see ServletContextListener#contextInitialized(ServletContextEvent)
     */
    public void contextInitialized(ServletContextEvent sce) {
        logger.warning("Context Init - Loading settings");

                ServletContext cxt = sce.getServletContext();
                TraininfoSettings settings = loadSettings(cxt);
                
                
                ConfigServlet servlet = new ConfigServlet();
                servlet.setConfigObject( settings );
                ServletRegistration.Dynamic dynconf = cxt.addServlet("webconfig", servlet );
                dynconf.addMapping("/ConfigServlet");

    }
    
    public static TraininfoSettings loadSettings(ServletContext cxt) {
        TraininfoSettings settings = (TraininfoSettings) cxt.getAttribute("settings"); 
        if (settings != null)  
                return settings;
        
                settings = new TraininfoSettings(cxt);
                settings.reloadConfig();

                cxt.setAttribute("settings", settings);
                
                return settings;
    }

        /**
     * @see ServletContextListener#contextDestroyed(ServletContextEvent)
     */
    public void contextDestroyed(ServletContextEvent sce) {
    }
        
}
1	package dk.thoerup.traininfoservice;
2
3	import java.util.logging.Logger;
4
5	import javax.servlet.ServletContext;
6	import javax.servlet.ServletContextEvent;
7	import javax.servlet.ServletContextListener;
8	import javax.servlet.ServletRegistration;
9	import javax.servlet.annotation.WebListener;
10
11	import dk.thoerup.webconfig.ConfigServlet;
12
13
14
15	/**
16	* Application Lifecycle Listener implementation class JmxListener
17	*
18	*/
19	@WebListener
20	public class SettingsListener implements ServletContextListener {
21
22	Logger logger = Logger.getLogger(SettingsListener.class.getName());
23
24
25	/**
26	* @see ServletContextListener#contextInitialized(ServletContextEvent)
27	*/
28	public void contextInitialized(ServletContextEvent sce) {
29	logger.warning("Context Init - Loading settings");
30
31	ServletContext cxt = sce.getServletContext();
32	TraininfoSettings settings = loadSettings(cxt);
33
34
35	ConfigServlet servlet = new ConfigServlet();
36	servlet.setConfigObject( settings );
37	ServletRegistration.Dynamic dynconf = cxt.addServlet("webconfig", servlet );
38	dynconf.addMapping("/ConfigServlet");
39
40	}
41
42	public static TraininfoSettings loadSettings(ServletContext cxt) {
43	TraininfoSettings settings = (TraininfoSettings) cxt.getAttribute("settings");
44	if (settings != null)
45	return settings;
46
47	settings = new TraininfoSettings(cxt);
48	settings.reloadConfig();
49
50	cxt.setAttribute("settings", settings);
51
52	return settings;
53	}
54
55	/**
56	* @see ServletContextListener#contextDestroyed(ServletContextEvent)
57	*/
58	public void contextDestroyed(ServletContextEvent sce) {
59	}
60
61	}