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.internal.convert.conversions;
22:
23: import com.db4o.internal.*;
24: import com.db4o.internal.btree.*;
25: import com.db4o.internal.convert.*;
26: import com.db4o.internal.convert.ConversionStage.*;
27:
28: /**
29: * @exclude
30: */
31: public class ClassIndexesToBTrees_5_5 extends Conversion {
32:
33: public static final int VERSION = 5;
34:
35: public void convert(LocalObjectContainer yapFile, int classIndexId,
36: BTree bTree) {
37: Transaction trans = yapFile.systemTransaction();
38: Buffer reader = yapFile.readReaderByID(trans, classIndexId);
39: if (reader == null) {
40: return;
41: }
42: int entries = reader.readInt();
43: for (int i = 0; i < entries; i++) {
44: bTree.add(trans, new Integer(reader.readInt()));
45: }
46: }
47:
48: public void convert(SystemUpStage stage) {
49:
50: // calling #storedClasses forces reading all classes
51: // That's good enough to load them all and to call the
52: // above convert method.
53:
54: stage.file().storedClasses();
55: }
56: }
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