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1   /**
2    * Copyright 2005-2006 the original author or authors.
3    *
4    * Licensed under the Gnu General Pubic License, Version 2.0 (the
5    * "License"); you may not use this file except in compliance with
6    * the License. You may obtain a copy of the License at
7    *
8    *      http://www.opensource.org/licenses/gpl-license.php
9    *
10   * This program is distributed in the hope that it will be useful,
11   * but WITHOUT ANY WARRANTY; without even the implied warranty of
12   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
13   * See the Gnu General Public License for more details.
14   */
15  package org.figure8.join.control;
16  
17  import org.apache.struts.action.ActionServlet;
18  
19  import javax.servlet.ServletException;
20  import javax.servlet.UnavailableException;
21  /**
22   * Controller servlet of Join application. This servlet is an extension
23   * of the Struts ActionServlet.
24   * @author  <a href="mailto:laurent.broudoux@free.fr">Laurent Broudoux</a>
25   * @version $Revision: 1.1 $
26   */
27  public class JoinServlet extends ActionServlet{
28     
29     // Override of ActionServlet ------------------------------------------------
30     
31     /**
32      * Override of Struts ActionServlet init() method. Call super.init()
33      * and then retrieve and store into servlet context objects shared by
34      * the whole application.
35      * @throws ServletException if something goes wrong during initilization
36      */
37     public void init() throws ServletException{
38        // Make sure to always call the super's init() first.
39        super.init();
40  
41        try{
42           // Retrieve objects that are shared across application.
43        }
44        catch (Exception e){
45           e.printStackTrace();
46           throw new UnavailableException("One or more services are unavailable");
47        }
48     }
49  }