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Java > Open Source Codes > org > exolab > jms > tools > admin > DatabaseFilter


1 /**
2  * Redistribution and use of this software and associated documentation
3  * ("Software"), with or without modification, are permitted provided
4  * that the following conditions are met:
5  *
6  * 1. Redistributions of source code must retain copyright
7  * statements and notices. Redistributions must also contain a
8  * copy of this document.
9  *
10  * 2. Redistributions in binary form must reproduce the
11  * above copyright notice, this list of conditions and the
12  * following disclaimer in the documentation and/or other
13  * materials provided with the distribution.
14  *
15  * 3. The name "Exolab" must not be used to endorse or promote
16  * products derived from this Software without prior written
17  * permission of Exoffice Technologies. For written permission,
18  * please contact info@exolab.org.
19  *
20  * 4. Products derived from this Software may not be called "Exolab"
21  * nor may "Exolab" appear in their names without prior written
22  * permission of Exoffice Technologies. Exolab is a registered
23  * trademark of Exoffice Technologies.
24  *
25  * 5. Due credit should be given to the Exolab Project
26  * (http://www.exolab.org/).
27  *
28  * THIS SOFTWARE IS PROVIDED BY EXOFFICE TECHNOLOGIES AND CONTRIBUTORS
29  * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
30  * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
31  * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
32  * EXOFFICE TECHNOLOGIES OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
33  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
34  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
35  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
37  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
38  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
39  * OF THE POSSIBILITY OF SUCH DAMAGE.
40  *
41  * Copyright 2000 (C) Exoffice Technologies Inc. All Rights Reserved.
42  *
43  * $Id: DatabaseFilter.java,v 1.1 2004/11/26 01:51:15 tanderson Exp $
44  *
45  * Date Author Changes
46  * $Date jimm Created
47  */
48
49
50 package org.exolab.jms.tools.admin;
51
52 import java.io.File JavaDoc;
53
54 import javax.swing.filechooser.FileFilter JavaDoc;
55
56
57 /**
58  * A file filter used by the file chooser to resitrict displayed files
59  * to files with a ".db" suffix only.
60  *
61  * @version $Revision: 1.1 $ $Date: 2004/11/26 01:51:15 $
62  * @author <a HREF="mailto:mourikis@exolab.org">Jim Mourikis</a>
63  */
64 public class DatabaseFilter extends FileFilter JavaDoc {
65
66     /**
67      * The default constructor does nothing.
68      *
69      */
70     public DatabaseFilter() {
71
72     }
73
74
75     /**
76      * All files in a directory are passed to this method to determine
77      * if they should be displayed.
78      * The method will allow the display of all directories and all files
79      * with the "*.db" suffix.
80      *
81      * @param f The file to be checked for display.
82      * @return boolean true if the file should be displayed.
83      *
84      */
85     public boolean accept(File JavaDoc f) {
86         boolean accept = f.isDirectory();
87
88         if (!accept) {
89             String JavaDoc suffix = getSuffix(f);
90
91             if (suffix != null) {
92                 accept = suffix.equals("db");
93             }
94         }
95         return accept;
96     }
97
98     /**
99      * The file suffix to allow display.
100      *
101      * @return String The suffix of all files which can be displayed
102      *
103      */
104     public String JavaDoc getDescription() {
105         return "Database Files(*.db)";
106     }
107
108
109     /**
110      * Get the suffix of the given file. If the file has no suffix return null
111      *
112      * @param f The file to check.
113      * @return String the file suffix
114      *
115      */
116     public String JavaDoc getSuffix(File JavaDoc f) {
117         String JavaDoc s = f.getPath();
118         String JavaDoc suffix = null;
119
120         int i = s.lastIndexOf('.');
121         if (i > 0 && i < s.length() - 1) {
122             suffix = s.substring(i + 1).toLowerCase();
123         }
124         return suffix;
125     }
126
127
128 } // End DatabaseFilter
129
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