Source Code Cross Referenced for Defrag.java in  » Database-DBMS » axion » org » axiondb » tools » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database DBMS » axion » org.axiondb.tools 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


01:        /*
02:         * $Id: Defrag.java,v 1.3 2004/08/27 03:21:25 ahimanikya Exp $
03:         * =======================================================================
04:         * Copyright (c) 2002 Axion Development Team.  All rights reserved.
05:         *  
06:         * Redistribution and use in source and binary forms, with or without 
07:         * modification, are permitted provided that the following conditions 
08:         * are met:
09:         * 
10:         * 1. Redistributions of source code must retain the above 
11:         *    copyright notice, this list of conditions and the following 
12:         *    disclaimer. 
13:         *   
14:         * 2. Redistributions in binary form must reproduce the above copyright 
15:         *    notice, this list of conditions and the following disclaimer in 
16:         *    the documentation and/or other materials provided with the 
17:         *    distribution. 
18:         *   
19:         * 3. The names "Tigris", "Axion", nor the names of its contributors may 
20:         *    not be used to endorse or promote products derived from this 
21:         *    software without specific prior written permission. 
22:         *  
23:         * 4. Products derived from this software may not be called "Axion", nor 
24:         *    may "Tigris" or "Axion" appear in their names without specific prior
25:         *    written permission.
26:         *   
27:         * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
28:         * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
29:         * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
30:         * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
31:         * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
32:         * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
33:         * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 
34:         * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 
35:         * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
36:         * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
37:         * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
38:         * =======================================================================
39:         */
40:
41:        package org.axiondb.tools;
42:
43:        import java.io.File;
44:
45:        import org.apache.commons.logging.Log;
46:        import org.apache.commons.logging.LogFactory;
47:        import org.axiondb.engine.DiskDatabase;
48:
49:        /**
50:         * A utility class for defragmenting an Axion database.
51:         * Use: <pre>Defrag &lt;database-directory&gt;</pre>
52:         * The database should not be in use when this program
53:         * is executed.
54:         *  
55:         * @version $Revision: 1.3 $ $Date: 2004/08/27 03:21:25 $
56:         * @author Rodney Waldhoff
57:         */
58:        public class Defrag {
59:            public static void main(String[] args) {
60:                if (args.length != 1) {
61:                    System.err.println("Defragments a database file");
62:                    System.err.println("Arguments: <database-directory>");
63:                } else {
64:                    try {
65:                        defragDatabase(args[0]);
66:                    } catch (Exception e) {
67:                        _log.debug("Exception while defragmenting database: ",
68:                                e);
69:                        System.err.println("Fail to defrag...");
70:                    }
71:                }
72:            }
73:
74:            public static void defragDatabase(String databaseDirectory)
75:                    throws Exception {
76:                defragDatabase(new File(databaseDirectory));
77:            }
78:
79:            public static void defragDatabase(File databaseDirectory)
80:                    throws Exception {
81:                DiskDatabase db = new DiskDatabase(databaseDirectory);
82:                db.defrag();
83:                db.shutdown();
84:            }
85:
86:            private static Log _log = LogFactory.getLog(Defrag.class);
87:        }
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