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Java > Open Source Codes > com > db4o > test > UuidAware


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.test;
22
23 import com.db4o.*;
24 import com.db4o.ext.*;
25 import com.db4o.query.*;
26
27
28 public class UuidAware {
29     
30     public String JavaDoc name;
31     
32     private transient long uuidLongPart;
33
34     private transient byte[] uuidSignaturePart;
35     
36     
37     public UuidAware() {
38      
39     }
40     
41     public UuidAware(String JavaDoc name) {
42         this.name = name;
43     }
44
45     public void configure(){
46         Db4o.configure().objectClass(this).generateUUIDs(true);
47     }
48     
49     public void store(){
50         Test.objectContainer().set(new UuidAware("one"));
51         Test.objectContainer().set(new UuidAware("two"));
52     }
53     
54     public void test(){
55         ExtObjectContainer oc = Test.objectContainer();
56
57         UuidAware ua = queryName("one");
58         ua.checkUUID(oc);
59         
60         ua = queryName("two");
61         ua.checkUUID(oc);
62     }
63     
64     private UuidAware queryName(String JavaDoc name){
65         Query q = Test.query();
66         q.constrain(getClass());
67         q.descend(name);
68         return (UuidAware) q.execute().next();
69     }
70     
71     private void checkUUID(ExtObjectContainer oc){
72         Db4oUUID uuid = new Db4oUUID(uuidLongPart, uuidSignaturePart);
73         Test.ensure(oc.getByUUID(uuid) == this);
74     }
75     
76     public void objectOnActivate(ObjectContainer oc){
77         setUuidFields(oc);
78     }
79     
80     public void objectOnNew(ObjectContainer oc){
81         setUuidFields(oc);
82     }
83     
84     private void setUuidFields(ObjectContainer oc){
85         ObjectInfo info = oc.ext().getObjectInfo(this);
86         Db4oUUID uuid = info.getUUID();
87         uuidLongPart = uuid.getLongPart();
88         uuidSignaturePart = uuid.getSignaturePart();
89     }
90     
91
92 }
93
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