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Java > Open Source Codes > org > polepos > teams > db4o > Db4oCarLocal


1 /*
2 This file is part of the PolePosition database benchmark
3 http://www.polepos.org
4
5 This program is free software; you can redistribute it and/or
6 modify it under the terms of the GNU General Public License
7 as published by the Free Software Foundation; either version 2
8 of the License, or (at your option) any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public
16 License along with this program; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
18 MA 02111-1307, USA. */

19
20 package org.polepos.teams.db4o;
21
22 import java.io.*;
23
24 import com.db4o.*;
25 import com.db4o.ext.*;
26
27 /**
28  *
29  * @author Herkules
30  */

31 public class Db4oCarLocal extends Db4oCar
32 {
33     
34     private static final String JavaDoc FOLDER = "data/db4o";
35
36     private static final String JavaDoc DB4O_FILE = "dbbench.yap";
37     
38     public Db4oCarLocal() {
39         super(Db4o.version().substring(5));
40         
41     }
42
43     /**
44      * Initialize the database by deleting the database file.
45      */

46     public void initialize()
47     {
48         new File(FOLDER).mkdirs();
49         deleteDatabaseFile();
50     }
51     
52     /**
53      * Open database in the configured mode.
54      */

55     public ExtObjectContainer createObjectContainer()
56     {
57         return Db4o.openFile( path() ).ext();
58     }
59
60     /**
61      * get rid of the database file.
62      */

63     private void deleteDatabaseFile()
64     {
65         new File( path() ).delete();
66     }
67     
68     
69     private final String JavaDoc path(){
70         return FOLDER + "/" + DB4O_FILE;
71         
72     }
73     
74
75 }
76
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