1 /*
2 * $Source: /usr/cvsroot/melati/maven-dsd-plugin/src/main/java/org/melati/poem/prepro/NullableFieldQualifier.java,v $
3 * $Revision: 1.11 $
4 *
5 * Copyright (C) 2000 William Chesters
6 *
7 * Part of Melati (http://melati.org), a framework for the rapid
8 * development of clean, maintainable web applications.
9 *
10 * Melati is free software; Permission is granted to copy, distribute
11 * and/or modify this software under the terms either:
12 *
13 * a) the GNU General Public License as published by the Free Software
14 * Foundation; either version 2 of the License, or (at your option)
15 * any later version,
16 *
17 * or
18 *
19 * b) any version of the Melati Software License, as published
20 * at http://melati.org
21 *
22 * You should have received a copy of the GNU General Public License and
23 * the Melati Software License along with this program;
24 * if not, write to the Free Software Foundation, Inc.,
25 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA to obtain the
26 * GNU General Public License and visit http://melati.org to obtain the
27 * Melati Software License.
28 *
29 * Feel free to contact the Developers of Melati (http://melati.org),
30 * if you would like to work out a different arrangement than the options
31 * outlined here. It is our intention to allow Melati to be used by as
32 * wide an audience as possible.
33 *
34 * This program is distributed in the hope that it will be useful,
35 * but WITHOUT ANY WARRANTY; without even the implied warranty of
36 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
37 * GNU General Public License for more details.
38 *
39 * Contact details for copyright holder:
40 *
41 * William Chesters <williamc@paneris.org>
42 * http://paneris.org/~williamc
43 * Obrechtstraat 114, 2517VX Den Haag, The Netherlands
44 */
45
46 package org.melati.poem.prepro;
47
48 /**
49 * A <tt>FieldQualifier</tt> which defines whether
50 * a <tt>Field</tt> is <tt>Nullable</tt>.
51 *
52 */
53 public class NullableFieldQualifier extends FieldQualifier {
54
55 /**
56 * Constructor.
57 */
58 public NullableFieldQualifier() {
59 }
60
61 /**
62 * Update the model.
63 *
64 * @param field the {@link FieldDef} to update
65 *
66 * @throws NullTroidException if the field is a <tt>TROID</tt>
67 * @throws NullDeletedException if the field is a <tt>Deleted</tt>
68 */
69 public void apply(FieldDef field)
70 throws NullTroidException, NullDeletedException {
71 // oops this isn't terribly OO
72 if (field.isTroidColumn())
73 throw new NullTroidException(field);
74 if (field.isDeletedColumn())
75 throw new NullDeletedException(field);
76 field.setNullable(true);
77 }
78 }