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Java > Open Source Codes > com > icesoft > applications > faces > auctionMonitor > comparator > AuctionMonitorItemComparator


1 /*
2  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
3  *
4  * "The contents of this file are subject to the Mozilla Public License
5  * Version 1.1 (the "License"); you may not use this file except in
6  * compliance with the License. You may obtain a copy of the License at
7  * http://www.mozilla.org/MPL/
8  *
9  * Software distributed under the License is distributed on an "AS IS"
10  * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
11  * License for the specific language governing rights and limitations under
12  * the License.
13  *
14  * The Original Code is ICEfaces 1.5 open source software code, released
15  * November 5, 2006. The Initial Developer of the Original Code is ICEsoft
16  * Technologies Canada, Corp. Portions created by ICEsoft are Copyright (C)
17  * 2004-2006 ICEsoft Technologies Canada, Corp. All Rights Reserved.
18  *
19  * Contributor(s): _____________________.
20  *
21  * Alternatively, the contents of this file may be used under the terms of
22  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"
23  * License), in which case the provisions of the LGPL License are
24  * applicable instead of those above. If you wish to allow use of your
25  * version of this file only under the terms of the LGPL License and not to
26  * allow others to use your version of this file under the MPL, indicate
27  * your decision by deleting the provisions above and replace them with
28  * the notice and other provisions required by the LGPL License. If you do
29  * not delete the provisions above, a recipient may use your version of
30  * this file under either the MPL or the LGPL License."
31  *
32  */
33
34 package com.icesoft.applications.faces.auctionMonitor.comparator;
35
36 import com.icesoft.applications.faces.auctionMonitor.beans.AuctionMonitorItemBean;
37
38 import java.util.Comparator JavaDoc;
39
40 /**
41  * General comparator used as a base class for all other comparators Overall
42  * this class performs a comparison of two auction items
43  */
44 public abstract class AuctionMonitorItemComparator implements Comparator JavaDoc {
45     public boolean isAscending = true;
46
47     public int compare(Object JavaDoc o1, Object JavaDoc o2) {
48         if ((!(o1 instanceof AuctionMonitorItemBean))) {
49             throw new ClassCastException JavaDoc(
50                     "AuctionMonitorItemBean comparator compare invoked on arbitrary object");
51         }
52
53         AuctionMonitorItemBean item1 = (AuctionMonitorItemBean) o1;
54         AuctionMonitorItemBean item2 = (AuctionMonitorItemBean) o2;
55
56         if (isAscending) {
57             return (compare(item1, item2));
58         }
59
60         return (compare(item2, item1));
61     }
62
63     public abstract int compare(AuctionMonitorItemBean item1,
64                                 AuctionMonitorItemBean item2);
65 }
66
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