DisplayUserListAction


1   /*
2   @COPYRIGHT@
3   */
4   package demo.townsend.action;
5   
6   import demo.townsend.common.Constants;
7   import demo.townsend.service.DataKeeper;
8   import javax.servlet.http.HttpServletRequest  ;
9   import javax.servlet.http.HttpServletResponse  ;
10  import javax.servlet.http.HttpSession  ;
11  import org.apache.struts.action.Action;
12  import org.apache.struts.action.ActionForm;
13  import org.apache.struts.action.ActionForward;
14  import org.apache.struts.action.ActionMapping;
15  import org.apache.struts.action.DynaActionForm;
16  
17  /**
18   * DisplayUserListAction processes the request to display the user's list.
19   * User's list is fetched from the HttpSession object, and a dynamic form 
20   * (i.e., displayUserListForm) is populated with this data.
21   */
22  public class DisplayUserListAction extends Action {
23     public ActionForward execute( ActionMapping mapping, ActionForm form,
24       HttpServletRequest   request, HttpServletResponse   response)
25       throws Exception   {
26  
27        HttpSession   session = request.getSession();
28   
29        DataKeeper dkeeper = (DataKeeper) session.getAttribute(Constants.DATA_KEY );
30        
31        if(dkeeper == null) {
32          dkeeper = new DataKeeper();
33        }
34  
35        ((DynaActionForm)form).set( "recentList", dkeeper.getList());
36        ((DynaActionForm)form).set( "listLength", Integer.toString(dkeeper.getListSize()));
37        ((DynaActionForm)form).set( "currentProduct", dkeeper.getCurrent());
38  
39        return mapping.findForward( Constants.SUCCESS_KEY );
40    }
41  }
42

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