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1 /* Copyright (C) 2004 - 2006 db4objects Inc. http://www.db4o.com
2
3 This file is part of the db4o open source object database.
4
5 db4o is free software; you can redistribute it and/or modify it under
6 the terms of version 2 of the GNU General Public License as published
7 by the Free Software Foundation and as clarified by db4objects' GPL
8 interpretation policy, available at
9 http://www.db4o.com/about/company/legalpolicies/gplinterpretation/
10 Alternatively you can write to db4objects, Inc., 1900 S Norfolk Street,
11 Suite 350, San Mateo, CA 94403, USA.
12
13 db4o is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 for more details.
17
18 You should have received a copy of the GNU General Public License along
19 with this program; if not, write to the Free Software Foundation, Inc.,
20 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
21 package com.db4o;
22
23 import com.db4o.config.*;
24
25 /**
26  * @exclude
27  */
28 public class Unobfuscated {
29     
30     static Object JavaDoc random;
31     
32     static boolean createDb4oList(Object JavaDoc a_stream){
33         ((YapStream)a_stream).checkClosed();
34         return ! ((YapStream)a_stream).isInstantiating();
35     }
36     
37     public static byte[] generateSignature() {
38         // TODO: We could add part of the file name to improve
39 // signature security.
40 YapWriter writer = new YapWriter(null, 300);
41         if(! Deploy.csharp) {
42             try {
43                 new YapStringIO().write(writer, java.net.InetAddress.getLocalHost().getHostName());
44                 writer.append((byte)0);
45                 writer.append(java.net.InetAddress.getLocalHost().getAddress());
46             } catch (Exception JavaDoc e) {
47             }
48         }
49         writer.writeLong(System.currentTimeMillis());
50         writer.writeLong(randomLong());
51         writer.writeLong(randomLong() + 1);
52         return writer.getWrittenBytes();
53     }
54     
55     static void logErr (Configuration config, int code, String JavaDoc msg, Throwable JavaDoc t) {
56         Messages.logErr(config, code, msg, t);
57     }
58     
59     static void purgeUnsychronized(Object JavaDoc a_stream, Object JavaDoc a_object){
60         ((YapStream)a_stream).purge1(a_object);
61     }
62     
63     public static long randomLong() {
64         if(Deploy.csharp) {
65             // TODO: route to .NET implementation
66 return System.currentTimeMillis();
67         }
68         if(random == null){
69             random = new java.util.Random JavaDoc();
70         }
71         return ((java.util.Random JavaDoc)random).nextLong();
72     }
73     
74     static void shutDownHookCallback(Object JavaDoc a_stream){
75         ((YapStream)a_stream).failedToShutDown();
76     }
77
78
79 }
80
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