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Java > Open Source Codes > com > db4o > events > CancellableObjectEventArgs


1 /* Copyright (C) 2004 - 2006 db4objects Inc. http://www.db4o.com
2
3 This file is part of the db4o open source object database.
4
5 db4o is free software; you can redistribute it and/or modify it under
6 the terms of version 2 of the GNU General Public License as published
7 by the Free Software Foundation and as clarified by db4objects' GPL
8 interpretation policy, available at
9 http://www.db4o.com/about/company/legalpolicies/gplinterpretation/
10 Alternatively you can write to db4objects, Inc., 1900 S Norfolk Street,
11 Suite 350, San Mateo, CA 94403, USA.
12
13 db4o is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 for more details.
17
18 You should have received a copy of the GNU General Public License along
19 with this program; if not, write to the Free Software Foundation, Inc.,
20 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
21 package com.db4o.events;
22
23 /**
24  * Argument for object related events which can be cancelled.
25  *
26  * @see EventRegistry
27  * @see CancellableEventArgs
28  */
29 public class CancellableObjectEventArgs extends ObjectEventArgs implements CancellableEventArgs {
30     private boolean _cancelled;
31
32     /**
33      * Creates a new instance for the specified object.
34      */
35     public CancellableObjectEventArgs(Object JavaDoc obj) {
36         super(obj);
37     }
38     
39     /**
40      * @see CancellableEventArgs#cancel()
41      */
42     public void cancel() {
43         _cancelled = true;
44     }
45
46     /**
47      * @see CancellableEventArgs#isCancelled()
48      */
49     public boolean isCancelled() {
50         return _cancelled;
51     }
52 }
53
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