YanLoaderListener


1   package jfun.yan.web;
2   
3   import javax.servlet.ServletContextEvent  ;
4   import javax.servlet.ServletContextListener  ;
5   
6   
7   
8   /**
9    * The ServletContextListener implementation that's responsible for setting up
10   * Yan container. It simply delegates to {@link YanLoader}.
11   * <p>
12   * @author Ben Yu
13   * Jan 17, 2006 1:41:04 PM
14   */
15  public class YanLoaderListener implements ServletContextListener   {
16  
17    private YanLoader yanLoader;
18  
19  
20    /**
21     * Initialize the root web application context.
22     */
23    public void contextInitialized(ServletContextEvent   event) {
24      this.yanLoader = createYanLoader();
25      this.yanLoader.initContainer(event.getServletContext());
26    }
27  
28    /**
29     * Create the YanLoader to use. Can be overridden in subclasses.
30     * @return the new YanLoader
31     */
32    protected YanLoader createYanLoader() {
33      return new YanLoader();
34    }
35  
36    /**
37     * Return the YanLoader used by this listener.
38     */
39    public YanLoader getYanLoader() {
40      return yanLoader;
41    }
42  
43  
44    /**
45     * Close the root web application context.
46     */
47    public void contextDestroyed(ServletContextEvent   event){
48      if (this.yanLoader != null) {
49        this.yanLoader.destroy(event.getServletContext());
50      }
51    }
52  
53  }
54

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