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Java > Open Source Codes > com > db4o > cs > messages > MWriteUpdate


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.cs.messages;
22
23 import com.db4o.*;
24 import com.db4o.cs.*;
25 import com.db4o.inside.slots.*;
26
27 public final class MWriteUpdate extends MsgObject {
28     
29     public final boolean processAtServer(YapServerThread serverThread) {
30         int yapClassId = _payLoad.readInt();
31         YapFile stream = (YapFile)stream();
32         unmarshall(YapConst.INT_LENGTH);
33         synchronized(streamLock()){
34             YapClass yc = stream.getYapClass(yapClassId);
35             _payLoad.writeEmbedded();
36             int id = _payLoad.getID();
37             transaction().dontDelete(id);
38             Slot oldSlot = ((YapFileTransaction)_trans).getCommittedSlotOfID(id);
39             stream.getSlotForUpdate(_payLoad);
40             yc.addFieldIndices(_payLoad, oldSlot);
41             _payLoad.writeEncrypt();
42         }
43         return true;
44     }
45 }
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