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 import java.util.Enumeration;
49
50 import org.melati.poem.util.EnumUtils;
51
52 /**
53 * Thrown when an attempt is made to delete a {@link Persistent} which is
54 * referred to by others and where the {@link IntegrityFix} is
55 * <tt>prevent</tt>.
56 *
57 * @author WilliamC At paneris.org
58 *
59 */
60 public class DeletionIntegrityPoemException extends PoemException {
61
62 /** The Persistent that we are attempting to delete.*/
63 public Persistent object;
64 /** References to our Persistent. */
65 public Enumeration<Persistent> references;
66
67 /** Constructor. */
68 public DeletionIntegrityPoemException(Persistent object,
69 Enumeration<Persistent> references) {
70 this.object = object;
71 this.references = references;
72 }
73
74 /** @return A description. */
75 public String toString() {
76 return "You can't delete " + object + " since there are references to it"
77 + references == null ? "" : EnumUtils.concatenated(",",references);
78 }
79 }