1 /*
2 * $Source$
3 * $Revision$
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 At paneris.org>
42 * http://paneris.org/~williamc
43 * Obrechtstraat 114, 2517VX Den Haag, The Netherlands
44 */
45
46 package org.melati.poem;
47
48 /**
49 * A <tt>DeletedField</tt> is a flag field in a record which
50 * marks the whole record as deleted.
51 *
52 * See org.melati.poem.prepro.DeletedFieldQualifier
53 */
54 public class DeletedPoemType extends BooleanPoemType {
55
56 /** The instance. */
57 public static final DeletedPoemType it = new DeletedPoemType();
58
59 /**
60 * Non-nullable constructor.
61 */
62 public DeletedPoemType() {
63 super(false);
64 }
65
66 protected void _saveColumnInfo(ColumnInfo columnInfo)
67 throws AccessPoemException {
68 columnInfo.setTypefactory(PoemTypeFactory.DELETED);
69 }
70
71 protected boolean _canRepresent(SQLPoemType<?> other) {
72 return other instanceof BooleanPoemType;
73 }
74
75 /**
76 * {@inheritDoc}
77 * @see java.lang.Object#toString()
78 */
79 public String toString() {
80 return "deleted (" + super.toString() + ")";
81 }
82
83 /**
84 * {@inheritDoc}
85 * @see org.melati.poem.PoemType#toDsdType()
86 */
87 public String toDsdType() {
88 return "Deleted";
89 }
90
91 }