01: /* Copyright (C) 2004 - 2007 db4objects Inc. http://www.db4o.com
02:
03: This file is part of the db4o open source object database.
04:
05: db4o is free software; you can redistribute it and/or modify it under
06: the terms of version 2 of the GNU General Public License as published
07: by the Free Software Foundation and as clarified by db4objects' GPL
08: interpretation policy, available at
09: 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.io;
22:
23: import com.db4o.*;
24:
25: /**
26: * @exclude
27: */
28: public class DebugIoAdapter extends VanillaIoAdapter {
29:
30: static int counter;
31:
32: private static final int[] RANGE_OF_INTEREST = new int[] { 0, 20 };
33:
34: public DebugIoAdapter(IoAdapter delegateAdapter) {
35: super (delegateAdapter);
36: }
37:
38: protected DebugIoAdapter(IoAdapter delegateAdapter, String path,
39: boolean lockFile, long initialLength, boolean readOnly)
40: throws Db4oIOException {
41: super (delegateAdapter.open(path, lockFile, initialLength,
42: readOnly));
43: }
44:
45: public IoAdapter open(String path, boolean lockFile,
46: long initialLength, boolean readOnly)
47: throws Db4oIOException {
48: return new DebugIoAdapter(new RandomAccessFileAdapter(), path,
49: lockFile, initialLength, readOnly);
50: }
51:
52: public void seek(long pos) throws Db4oIOException {
53: if (pos >= RANGE_OF_INTEREST[0] && pos <= RANGE_OF_INTEREST[1]) {
54: counter++;
55: System.out
56: .println("seek: " + pos + " counter: " + counter);
57: }
58: super.seek(pos);
59: }
60:
61: }
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