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Java > Open Source Codes > net > sf > saxon > sort > DescendingComparer


1 package net.sf.saxon.sort;
2 import java.util.Comparator JavaDoc;
3
4 /**
5  * A Comparer used for comparing descending keys
6  *
7  *
8  */
9
10 public class DescendingComparer implements Comparator JavaDoc, java.io.Serializable JavaDoc {
11
12     private Comparator JavaDoc baseComparer;
13
14     public DescendingComparer(Comparator JavaDoc base) {
15         baseComparer = base;
16     }
17
18     /**
19     * Compare two objects.
20     * @return <0 if a<b, 0 if a=b, >0 if a>b
21     * @throws ClassCastException if the objects are of the wrong type for this Comparer
22     */
23
24     public int compare(Object JavaDoc a, Object JavaDoc b) {
25         return 0 - baseComparer.compare(a, b);
26     }
27
28 }
29
30
31 //
32 // The contents of this file are subject to the Mozilla Public License Version 1.0 (the "License");
33 // you may not use this file except in compliance with the License. You may obtain a copy of the
34 // License at http://www.mozilla.org/MPL/
35 //
36 // Software distributed under the License is distributed on an "AS IS" basis,
37 // WITHOUT WARRANTY OF ANY KIND, either express or implied.
38 // See the License for the specific language governing rights and limitations under the License.
39 //
40 // The Original Code is: all this file.
41 //
42 // The Initial Developer of the Original Code is Michael H. Kay
43 //
44 // Portions created by (your name) are Copyright (C) (your legal entity). All Rights Reserved.
45 //
46 // Contributor(s): none
47 //
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