AbstractFormAction


1   /* ===============================================================================
2    *
3    * Part of the InfoGlue Content Management Platform (www.infoglue.org)
4    *
5    * ===============================================================================
6    *
7    *  Copyright (C)
8    * 
9    * This program is free software; you can redistribute it and/or modify it under
10   * the terms of the GNU General Public License version 2, as published by the
11   * Free Software Foundation. See the file LICENSE.html for more information.
12   * 
13   * This program is distributed in the hope that it will be useful, but WITHOUT
14   * ANY WARRANTY, including the implied warranty of MERCHANTABILITY or FITNESS
15   * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
16   * 
17   * You should have received a copy of the GNU General Public License along with
18   * this program; if not, write to the Free Software Foundation, Inc. / 59 Temple
19   * Place, Suite 330 / Boston, MA 02111-1307 / USA.
20   *
21   * ===============================================================================
22   */
23  
24  package org.infoglue.cms.applications.common.actions;
25  
26  import java.util.Locale  ;
27  
28  import org.apache.log4j.Logger;
29  import org.infoglue.cms.exception.ConstraintException;
30  import org.infoglue.cms.util.StringManager;
31  import org.infoglue.cms.util.StringManagerFactory;
32  
33  import webwork.action.CommandDriven;
34  
35  
36  /**
37   *
38   *
39   * @author <a HREF="mailto:meat_for_the_butcher@yahoo.com">Patrik Nyborg</a>
40   */
41  public abstract class AbstractFormAction extends AbstractAction implements CommandDriven 
42  {
43      private final static Logger logger = Logger.getLogger(AbstractFormAction.class.getName());
44  
45    // --- [Constants] -----------------------------------------------------------
46    // --- [Attributes] ----------------------------------------------------------
47  
48    //
49    private Errors errors = new Errors();
50  
51  
52  
53    // --- [Static] --------------------------------------------------------------
54    // --- [Constructors] --------------------------------------------------------
55    // --- [Public] --------------------------------------------------------------
56  
57    /**
58     *
59     */
60    public Errors getErrors() {
61      return errors;
62    }
63  
64  
65  
66    // --- [X Overrides] ---------------------------------------------------------
67    // --- [webwork.action.Action implementation] --------------------------------
68  
69    /**
70     *
71     */
72    public String   execute() throws Exception   {
73      try {
74        return super.execute();
75      } catch(ConstraintException e) {
76        setErrors(e);
77        return INPUT;
78      }
79    }
80  
81  
82  
83    // --- [Package protected] ---------------------------------------------------
84    // --- [Private] -------------------------------------------------------------
85  
86    /**
87     *
88     */
89    private void setErrors(ConstraintException exception) {
90      final Locale   locale = getSession().getLocale();
91  
92      for(ConstraintException ce = exception; ce != null; ce = ce.getChainedException()) {
93        final String   fieldName             = ce.getFieldName();
94        final String   errorCode             = ce.getErrorCode();
95        final String   localizedErrorMessage = getLocalizedErrorMessage(locale, errorCode);
96  
97        getErrors().addError(fieldName, localizedErrorMessage);
98      }
99      logger.debug(getErrors().toString());
100   }
101 
102   /**
103    * <todo>Move to a ConstraintExceptionHelper class?</todo>
104    */
105   private String   getLocalizedErrorMessage(Locale   locale, String   errorCode) {
106     // <todo>fetch packagename from somewhere</todo>
107     final StringManager stringManager = StringManagerFactory.getPresentationStringManager("org.infoglue.cms.entities", locale);
108 
109     // check if a specific error message exists - <todo/>
110     // nah, use the general error message
111     return stringManager.getString(errorCode);
112   }
113 
114 
115 
116   // --- [Protected] -----------------------------------------------------------
117   // --- [Inner classes] -------------------------------------------------------
118 }
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