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Java > Open Source Codes > com > mckoi > database > global > NullObject


1 /**
2  * com.mckoi.database.global.NullObject 22 Jul 2000
3  *
4  * Mckoi SQL Database ( http://www.mckoi.com/database )
5  * Copyright (C) 2000, 2001, 2002 Diehl and Associates, Inc.
6  *
7  * This program is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU General Public License
9  * Version 2 as published by the Free Software Foundation.
10  *
11  * This program 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 Version 2 for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * Version 2 along with this program; if not, write to the Free Software
18  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19  *
20  * Change Log:
21  *
22  *
23  */
24
25 package com.mckoi.database.global;
26
27 /**
28  * A Null Object.
29  *
30  * @author Tobias Downer
31  * @deprecated do not use. Nulls are now handled via TObject and TType. This
32  * method is only kept around for legacy with older databases.
33  */
34
35 public class NullObject implements java.io.Serializable JavaDoc {
36
37   static final long serialVersionUID = 8599490526855696529L;
38
39   public static NullObject NULL_OBJ = new NullObject();
40
41   public int compareTo(Object JavaDoc ob) {
42     if (ob == null || ob instanceof NullObject) {
43       return 0;
44     }
45     return -1;
46   }
47
48   public String JavaDoc toString() {
49     return "NULL";
50   }
51
52 }
53
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