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Java > Open Source Codes > org > jacorb > test > notification > queue > DelegatingOverflowStrategy


1 /*
2  * JacORB - a free Java ORB
3  *
4  * Copyright (C) 1999-2004 Gerald Brose
5  *
6  * This library is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Library General Public
8  * License as published by the Free Software Foundation; either
9  * version 2 of the License, or (at your option) any later version.
10  *
11  * This library 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 GNU
14  * Library General Public License for more details.
15  *
16  * You should have received a copy of the GNU Library General Public
17  * License along with this library; if not, write to the Free
18  * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19  *
20  */
21
22 package org.jacorb.test.notification.queue;
23
24 import java.util.ArrayList JavaDoc;
25 import java.util.Collections JavaDoc;
26 import java.util.List JavaDoc;
27
28 import org.jacorb.notification.interfaces.Message;
29 import org.jacorb.notification.queue.AbstractBoundedEventQueue;
30 import org.jacorb.notification.queue.EventQueueOverflowStrategy;
31
32 class DelegatingOverflowStrategy extends EventQueueOverflowStrategy
33 {
34     private final List JavaDoc removedEvents_;
35     
36     private final EventQueueOverflowStrategy delegate_;
37
38     public DelegatingOverflowStrategy(EventQueueOverflowStrategy delegate)
39     {
40         super();
41         
42         delegate_ = delegate;
43         removedEvents_ = new ArrayList JavaDoc();
44     }
45
46     public Message removeElementFromQueue(AbstractBoundedEventQueue queue)
47     {
48         Message e = delegate_.removeElementFromQueue(queue);
49
50         removedEvents_.add(e);
51
52         return e;
53     }
54     
55     public List JavaDoc getRemovedElements()
56     {
57         return Collections.unmodifiableList(removedEvents_);
58     }
59 }
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