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Java > Open Source Codes > com > caucho > amber > table > ColumnCompare


1 /*
2  * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
3  *
4  * This file is part of Resin(R) Open Source
5  *
6  * Each copy or derived work must preserve the copyright notice and this
7  * notice unmodified.
8  *
9  * Resin Open Source is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * Resin Open Source is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17  * of NON-INFRINGEMENT. See the GNU General Public License for more
18  * details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with Resin Open Source; if not, write to the
22  * Free Software Foundation, Inc.
23  * 59 Temple Place, Suite 330
24  * Boston, MA 02111-1307 USA
25  *
26  * @author Scott Ferguson
27  */
28
29 package com.caucho.amber.table;
30
31 import java.util.Comparator JavaDoc;
32
33 /**
34  * Sorts columns fields.
35  */
36 public class ColumnCompare implements Comparator JavaDoc<Column> {
37   /**
38    * Compares the fields.
39    */
40   public int compare(Column a, Column b)
41   {
42     if (a.isPrimaryKey() && ! b.isPrimaryKey())
43       return -1;
44     else if (b.isPrimaryKey() && ! a.isPrimaryKey())
45       return 1;
46     else
47       return a.getName().compareTo(b.getName());
48   }
49 }
50
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