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.db4ounit.common.assorted;
22:
23: import com.db4o.*;
24: import com.db4o.config.*;
25: import com.db4o.query.*;
26:
27: import db4ounit.*;
28: import db4ounit.extensions.*;
29:
30: public class MaximumActivationDepthTestCase extends
31: AbstractDb4oTestCase {
32:
33: public static class Data {
34: public int _id;
35: public Data _prev;
36:
37: public Data(int id, Data prev) {
38: _id = id;
39: _prev = prev;
40: }
41: }
42:
43: protected void configure(Configuration config) {
44: config.activationDepth(Integer.MAX_VALUE);
45: config.objectClass(Data.class).maximumActivationDepth(1);
46: }
47:
48: protected void store() throws Exception {
49: Data data = new Data(2, null);
50: data = new Data(1, data);
51: data = new Data(0, data);
52: store(data);
53: }
54:
55: public void testActivationRestricted() {
56: Query query = newQuery(Data.class);
57: query.descend("_id").constrain(new Integer(0));
58: ObjectSet result = query.execute();
59: Assert.areEqual(1, result.size());
60: Data data = (Data) result.next();
61: Assert.isNotNull(data._prev);
62: Assert.isNull(data._prev._prev);
63: }
64: }
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