01: /*
02: * JacORB - a free Java ORB
03: *
04: * Copyright (C) 1999-2006 Gerald Brose
05: *
06: * This library is free software; you can redistribute it and/or
07: * modify it under the terms of the GNU Library General Public
08: * License as published by the Free Software Foundation; either
09: * 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.notification.queue;
23:
24: import org.jacorb.notification.interfaces.Message;
25:
26: /**
27: * a bounded event queue that orders the
28: * added messages by their receivetimestamp attribute.
29: *
30: * @author Alphonse Bendt
31: * @version $Id: BoundedReceiveTimeEventQueue.java,v 1.2 2006/03/04 19:34:59 alphonse.bendt Exp $
32: */
33: public class BoundedReceiveTimeEventQueue extends
34: AbstractBoundedEventHeap {
35: public BoundedReceiveTimeEventQueue(int maxSize,
36: EventQueueOverflowStrategy overflowStrategy) {
37: super (maxSize, overflowStrategy, new Object(),
38: QueueUtil.ASCENDING_INSERT_ORDER_COMPARATOR);
39: }
40:
41: protected Message getEarliestTimeout() {
42: return removeFirstElement(QueueUtil.ASCENDING_TIMEOUT_COMPARATOR);
43: }
44:
45: protected Message getLeastPriority() {
46: return removeFirstElement(QueueUtil.ASCENDING_PRIORITY_COMPARATOR);
47: }
48:
49: protected Message getOldestElement() {
50: return getNextHeapElement();
51: }
52:
53: protected Message getYoungestElement() {
54: return removeFirstElement(QueueUtil.DESCENDING_INSERT_ORDER_COMPARATOR);
55: }
56:
57: public String getOrderPolicyName() {
58: return "FifoOrder";
59: }
60: }
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