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1   /*
2    * $Id: PrepareBeanAction.java 421486 2006-07-13 03:37:08Z wsmoak $
3    *
4    * Copyright 2005 The Apache Software Foundation.
5    *
6    * Licensed under the Apache License, Version 2.0 (the "License");
7    * you may not use this file except in compliance with the License.
8    * You may obtain a copy of the License at
9    *
10   *      http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing, software
13   * distributed under the License is distributed on an "AS IS" BASIS,
14   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15   * See the License for the specific language governing permissions and
16   * limitations under the License.
17   */
18  
19  package examples.bean;
20  
21  import javax.servlet.http.HttpServletRequest;
22  import javax.servlet.http.HttpServletResponse;
23  
24  import org.apache.struts.action.Action;
25  import org.apache.struts.action.ActionForm;
26  import org.apache.struts.action.ActionForward;
27  import org.apache.struts.action.ActionMapping;
28  
29  /***
30   * Perform any tasks and setup any data that
31   * must be prepared before the form is displayed.
32   *
33   * @version $Rev: 421486 $ $Date: 2006-07-12 20:37:08 -0700 (Wed, 12 Jul 2006) $
34   */
35  public class PrepareBeanAction extends Action {
36  
37      // ------------------------------------------------------------ Constructors
38  
39      /***
40       * Constructor for PrepareBeanAction.
41       */
42      public PrepareBeanAction() {
43          super();
44      }
45  
46      // ---------------------------------------------------------- Action Methods
47  
48      /***
49       * Process the request and return an <code>ActionForward</code> instance
50       * describing where and how control should be forwarded, or
51       * <code>null</code>if the response has already been completed.
52       *
53       * @param mapping The ActionMapping used to select this instance
54       * @param form The optional ActionForm bean for this request (if any)
55       * @param request The HTTP request we are processing
56       * @param response The HTTP response we are creating
57       *
58       * @exception Exception if an exception occurs
59       *
60       * @return the ActionForward to forward control to
61       */
62      public ActionForward execute(
63          ActionMapping mapping,
64          ActionForm form,
65          HttpServletRequest request,
66          HttpServletResponse response)
67          throws Exception {
68  
69          // Set-up an example bean
70          ExampleBean example = new ExampleBean();
71          example.getList().add("List entry #1");
72          example.getList().add("List entry #2");
73          example.getList().add("List entry #3");
74          example.getList().add("List entry #4");
75  
76          // Add a nested bean
77          example.setNested(new NestedBean());
78  
79          // Place the example bean in the request scope
80          request.setAttribute("example", example);
81  
82          // Forward to the test page
83          return mapping.findForward("success");
84      }
85  
86  }