BookstoreCalcFieldAndSearchInterceptor


1   /*
2    * $Header: /cvsroot/jdbforms/dbforms/examples/bookstore/WEB-INF/src/interceptors/BookstoreCalcFieldAndSearchInterceptor.java,v 1.2 2005/02/19 21:50:21 hkollmann Exp $
3    * $Revision: 1.2 $
4    * $Date: 2005/02/19 21:50:21 $
5    *
6    * DbForms - a Rapid Application Development Framework
7    * Copyright (C) 2001 Joachim Peer <joepeer@excite.com>
8    *
9    * This library is free software; you can redistribute it and/or
10   * modify it under the terms of the GNU Lesser General Public
11   * License as published by the Free Software Foundation; either
12   * version 2.1 of the License, or (at your option) any later version.
13   *
14   * This library is distributed in the hope that it will be useful,
15   * but WITHOUT ANY WARRANTY; without even the implied warranty of
16   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
17   * Lesser General Public License for more details.
18   *
19   * You should have received a copy of the GNU Lesser General Public
20   * License along with this library; if not, write to the Free Software
21   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
22   */
23  package interceptors;
24  import org.dbforms.config.DbEventInterceptorData;
25  import org.dbforms.config.MultipleValidationException;
26  import org.dbforms.config.ResultSetVector;
27  import org.dbforms.config.ValidationException;
28  
29  import org.dbforms.event.DbEventInterceptorSupport;
30  
31  
32  
33  /**
34   * DOCUMENT ME!
35   *
36   * @author $author$
37   * @version $Revision: 1.2 $
38   */
39  public class BookstoreCalcFieldAndSearchInterceptor
40     extends DbEventInterceptorSupport {
41     /**
42      * DOCUMENT ME!
43      *
44      * @param data DOCUMENT ME!
45      *
46      * @return DOCUMENT ME!
47      *
48      * @throws ValidationException DOCUMENT ME!
49      * @throws MultipleValidationException DOCUMENT ME!
50      */
51     public int preAddRow(DbEventInterceptorData data)
52        throws ValidationException, MultipleValidationException {
53         ResultSetVector rsv          = (ResultSetVector) data.getAttribute(DbEventInterceptorData.RESULTSET);
54         Object  []        row          = (Object  []) data.getAttribute(DbEventInterceptorData.OBJECTROW);
55         int             colISBN      = rsv.getFieldIndex("ISBN");
56         int res;
57         if (row[colISBN] == null) {
58            res = IGNORE_OPERATION;
59         } else {
60            res = GRANT_OPERATION;
61         }
62         return res;
63     }
64  
65  
66     /**
67      * DOCUMENT ME!
68      *
69      * @param data DOCUMENT ME!
70      *
71      * @throws ValidationException DOCUMENT ME!
72      * @throws MultipleValidationException DOCUMENT ME!
73      */
74     public void postAddRow(DbEventInterceptorData data) {
75        ResultSetVector rsv          = (ResultSetVector) data.getAttribute(DbEventInterceptorData.RESULTSET);
76        Object  []        row          = (Object  []) data.getAttribute(DbEventInterceptorData.OBJECTROW);
77        int             colISBN      = rsv.getFieldIndex("ISBN");
78        int             colTITEL     = rsv.getFieldIndex("TITLE");
79        int             colSBN_TITEL = rsv.getFieldIndex("ISBN_TITLE");
80        row[colSBN_TITEL] = "+-" + row[colISBN] + "-CALC-" + row[colTITEL] + "-+";
81  
82        int     colROWNUM = rsv.getFieldIndex("ROW_NUM");
83        Integer   oRowNum = (Integer  ) data.getAttribute("ROWNUM");
84        int     rowNum  = 0;
85  
86        if (oRowNum != null) {
87           rowNum = oRowNum.intValue();
88        }
89  
90        rowNum++;
91        oRowNum = new Integer  (rowNum);
92        data.setAttribute("ROWNUM", oRowNum);
93        row[colROWNUM] = oRowNum;
94     }
95  }
96
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