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.convert.*;
25: import com.db4o.internal.convert.ConversionStage.*;
26:
27: /**
28: * @exclude
29: */
30: public class FieldIndexesToBTrees_5_7 extends Conversion {
31:
32: public static final int VERSION = 6;
33:
34: public void convert(SystemUpStage stage) {
35: stage.file().classCollection().writeAllClasses();
36: rebuildUUIDIndex(stage.file());
37: freeOldUUIDMetaIndex(stage.file());
38: }
39:
40: private void rebuildUUIDIndex(LocalObjectContainer file) {
41: final UUIDFieldMetadata uuid = file.uUIDIndex();
42: final ClassMetadataIterator i = file.classCollection()
43: .iterator();
44: while (i.moveNext()) {
45: final ClassMetadata clazz = i.currentClass();
46: if (clazz.generateUUIDs()) {
47: uuid.rebuildIndexForClass(file, clazz);
48: }
49: }
50: }
51:
52: /** @param file */
53: private void freeOldUUIDMetaIndex(LocalObjectContainer file) {
54: // updating removed here to allow removing MetaIndex class
55: }
56: }
|