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Java > Open Source Codes > com > db4o > db4ounit > common > querying > CascadeOnUpdate


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.db4ounit.common.querying;
22
23 import com.db4o.config.*;
24 import com.db4o.foundation.*;
25
26 import db4ounit.*;
27 import db4ounit.extensions.*;
28
29 public class CascadeOnUpdate extends AbstractDb4oTestCase {
30     
31     public static class Atom {
32         
33         public Atom child;
34         public String JavaDoc name;
35         
36         public Atom(){
37         }
38         
39         public Atom(Atom child){
40             this.child = child;
41         }
42         
43         public Atom(String JavaDoc name){
44             this.name = name;
45         }
46         
47         public Atom(Atom child, String JavaDoc name){
48             this(child);
49             this.name = name;
50         }
51     }
52
53     public Object JavaDoc child;
54
55     protected void configure(Configuration conf) {
56         conf.objectClass(this).cascadeOnUpdate(true);
57     }
58
59     protected void store() {
60         CascadeOnUpdate cou = new CascadeOnUpdate();
61         cou.child = new Atom(new Atom("storedChild"), "stored");
62         db().set(cou);
63     }
64
65     public void test() throws Exception JavaDoc {
66         foreach(getClass(), new Visitor4() {
67             public void visit(Object JavaDoc obj) {
68                 CascadeOnUpdate cou = (CascadeOnUpdate) obj;
69                 ((Atom)cou.child).name = "updated";
70                 ((Atom)cou.child).child.name = "updated";
71                 db().set(cou);
72             }
73         });
74         
75         reopen();
76         
77         foreach(getClass(), new Visitor4() {
78             public void visit(Object JavaDoc obj) {
79                 CascadeOnUpdate cou = (CascadeOnUpdate) obj;
80                 Atom atom = (Atom)cou.child;
81                 Assert.areEqual("updated", atom.name);
82                 Assert.areNotEqual("updated", atom.child.name);
83             }
84         });
85     }
86 }
87
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