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Java > Open Source Codes > org > apache > struts > webapp > validator > RegistrationAction


1 /*
2  * $Id: RegistrationAction.java 54929 2004-10-16 16:38:42Z germuska $
3  *
4  * Copyright 2000-2004 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 org.apache.struts.webapp.validator;
20
21 import javax.servlet.http.HttpServletRequest JavaDoc;
22 import javax.servlet.http.HttpServletResponse JavaDoc;
23 import javax.servlet.http.HttpSession JavaDoc;
24
25 import org.apache.commons.logging.Log;
26 import org.apache.commons.logging.LogFactory;
27 import org.apache.struts.action.Action;
28 import org.apache.struts.action.ActionForm;
29 import org.apache.struts.action.ActionForward;
30 import org.apache.struts.action.ActionMapping;
31
32 /**
33  * Implementation of <strong>Action</strong> that validates a registration form.
34  *
35  */
36 public final class RegistrationAction extends Action {
37
38     /**
39      * Commons Logging instance.
40      */
41     private Log log = LogFactory.getFactory().getInstance(this.getClass().getName());
42
43     /**
44      * Process the specified HTTP request, and create the corresponding HTTP
45      * response (or forward to another web component that will create it).
46      * Return an <code>ActionForward</code> instance describing where and how
47      * control should be forwarded, or <code>null</code> if the response has
48      * already been completed.
49      *
50      * @param mapping The ActionMapping used to select this instance
51      * @param form The optional ActionForm bean for this request (if any)
52      * @param request The HTTP request we are processing
53      * @param response The HTTP response we are creating
54      *
55      * @return Action to forward to
56      * @exception Exception if an input/output error or servlet exception occurs
57      */
58     public ActionForward execute(
59         ActionMapping mapping,
60         ActionForm form,
61         HttpServletRequest JavaDoc request,
62         HttpServletResponse JavaDoc response)
63         throws Exception JavaDoc {
64
65         // Was this transaction cancelled?
66 if (isCancelled(request)) {
67             if (log.isInfoEnabled()) {
68                 log.info(
69                     " "
70                         + mapping.getAttribute()
71                         + " - Registration transaction was cancelled");
72             }
73
74             removeFormBean(mapping, request);
75
76             return (mapping.findForward("success"));
77         }
78
79         return mapping.findForward("success");
80     }
81
82     /**
83      * Convenience method for removing the obsolete form bean.
84      *
85      * @param mapping The ActionMapping used to select this instance
86      * @param request The HTTP request we are processing
87      */
88     protected void removeFormBean(
89         ActionMapping mapping,
90         HttpServletRequest JavaDoc request) {
91             
92         // Remove the obsolete form bean
93 if (mapping.getAttribute() != null) {
94             if ("request".equals(mapping.getScope())) {
95                 request.removeAttribute(mapping.getAttribute());
96             } else {
97                 HttpSession JavaDoc session = request.getSession();
98                 session.removeAttribute(mapping.getAttribute());
99             }
100         }
101     }
102 }
103
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