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.defragment;
22:
23: import java.io.IOException;
24:
25: import com.db4o.*;
26: import com.db4o.internal.*;
27: import com.db4o.internal.btree.*;
28:
29: /**
30: * Implements one step in the defragmenting process.
31: *
32: * @exclude
33: */
34: interface PassCommand {
35: void processObjectSlot(DefragContextImpl context,
36: ClassMetadata yapClass, int id) throws CorruptionException,
37: IOException;
38:
39: void processClass(DefragContextImpl context,
40: ClassMetadata yapClass, int id, int classIndexID)
41: throws CorruptionException, IOException;
42:
43: void processClassCollection(DefragContextImpl context)
44: throws CorruptionException, IOException;
45:
46: void processBTree(DefragContextImpl context, BTree btree)
47: throws CorruptionException, IOException;
48:
49: void flush(DefragContextImpl context);
50: }
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