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


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.reflect.ReflectClass;
26
27 public final class MCreateClass extends MsgD {
28
29     public final boolean processAtServer(YapServerThread serverThread) {
30         YapStream stream = stream();
31         Transaction trans = stream.getSystemTransaction();
32         YapWriter returnBytes = new YapWriter(trans, 0);
33         try{
34             ReflectClass claxx = trans.reflector().forName(readString());
35             if (claxx != null) {
36                 synchronized (streamLock()) {
37                     try {
38                         YapClass yapClass = stream.produceYapClass(claxx);
39                         if (yapClass != null) {
40                             stream.checkStillToSet();
41                             yapClass.setStateDirty();
42                             yapClass.write(trans);
43                             trans.commit();
44                             returnBytes = stream.readWriterByID(trans, yapClass.getID());
45                             serverThread.write(Msg.OBJECT_TO_CLIENT.getWriter(returnBytes));
46                             return true;
47     
48                         }
49                         
50                         // TODO: handling, if the class can't be created
51
52                     } catch (Throwable JavaDoc t) {
53                         if (Deploy.debug) {
54                             System.out.println("MCreateClass failed");
55                         }
56                     }
57                 }
58             }
59         }catch(Throwable JavaDoc th){
60             if (Deploy.debug) {
61                 System.out.println("MCreateClass failed");
62             }
63         }
64         serverThread.write(Msg.FAILED);
65         return true;
66     }
67 }
68
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