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;
import dk.thoerup.webconfig.ContextConfigLoader;


/**
 * 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();
                new ContextConfigLoader(cxt).loadConfig(settings);

                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	import dk.thoerup.webconfig.ContextConfigLoader;
13
14
15
16	/**
17	* Application Lifecycle Listener implementation class JmxListener
18	*
19	*/
20	@WebListener
21	public class SettingsListener implements ServletContextListener {
22
23	Logger logger = Logger.getLogger(SettingsListener.class.getName());
24
25
26	/**
27	* @see ServletContextListener#contextInitialized(ServletContextEvent)
28	*/
29	public void contextInitialized(ServletContextEvent sce) {
30	logger.warning("Context Init - Loading settings");
31
32	ServletContext cxt = sce.getServletContext();
33	TraininfoSettings settings = loadSettings(cxt);
34
35
36	ConfigServlet servlet = new ConfigServlet();
37	servlet.setConfigObject( settings );
38	ServletRegistration.Dynamic dynconf = cxt.addServlet("webconfig", servlet );
39	dynconf.addMapping("/ConfigServlet");
40
41	}
42
43	public static TraininfoSettings loadSettings(ServletContext cxt) {
44	TraininfoSettings settings = (TraininfoSettings) cxt.getAttribute("settings");
45	if (settings != null)
46	return settings;
47
48	settings = new TraininfoSettings();
49	new ContextConfigLoader(cxt).loadConfig(settings);
50
51	cxt.setAttribute("settings", settings);
52
53	return settings;
54	}
55
56	/**
57	* @see ServletContextListener#contextDestroyed(ServletContextEvent)
58	*/
59	public void contextDestroyed(ServletContextEvent sce) {
60	}
61
62	}