2 * Copyright (C) 2001, 2002 The Mir-coders group
4 * This file is part of Mir.
6 * Mir is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * Mir is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with Mir; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 * In addition, as a special exception, The Mir-coders gives permission to link
21 * the code of this program with the com.oreilly.servlet library, any library
22 * licensed under the Apache Software License, The Sun (tm) Java Advanced
23 * Imaging library (JAI), The Sun JIMI library (or with modified versions of
24 * the above that use the same license as the above), and distribute linked
25 * combinations including the two. You must obey the GNU General Public
26 * License in all respects for all of the code used other than the above
27 * mentioned libraries. If you modify this file, you may extend this exception
28 * to your version of the file, but you are not obligated to do so. If you do
29 * not wish to do so, delete this exception statement from your version.
32 package mircoders.storage;
34 import java.sql.Connection;
35 import java.sql.SQLException;
36 import java.sql.Statement;
38 import mir.storage.Database;
39 import mir.storage.StorageObject;
40 import mir.storage.StorageObjectFailure;
41 import freemarker.template.SimpleList;
44 * <b>This class implements the access to the comment-table for the
50 public class DatabaseComment extends Database implements StorageObject{
52 private static DatabaseComment instance;
54 // the following *has* to be sychronized cause this static method
55 // could get preemted and we could end up with 2 instances of DatabaseFoo..
56 // see the "Singletons with needles and thread" article at JavaWorld -mh
57 public synchronized static DatabaseComment getInstance()
58 throws StorageObjectFailure {
59 if (instance == null) {
60 instance = new DatabaseComment();
61 instance.myselfDatabase = instance;
66 private DatabaseComment() throws StorageObjectFailure
69 this.hasTimestamp = false;
70 ////this.cache = new HashMap();
71 this.theTable="comment";
73 this.theEntityClass = Class.forName("mircoders.entity.EntityComment");
75 catch (Exception e) { throw new StorageObjectFailure(e); }
78 public SimpleList getPopupData()
79 throws StorageObjectFailure { return getPopupData("title",true); }
81 public boolean deleteByContentId(String id)
82 throws StorageObjectFailure {
88 /** @todo comments and topics should be deleted */
89 sql = "delete from "+ theTable + " where to_media="+id;
90 //theLog.printInfo("DELETE "+ sql);
94 stmt = con.createStatement();
95 res = stmt.executeUpdate(sql);
96 } catch (SQLException sqe) {
97 new StorageObjectFailure(sqe);
100 freeConnection(con,stmt);