/* Copyright (C) 2004 - 2007 db4objects Inc. http://www.db4o.com
This file is part of the db4o open source object database.
db4o is free software; you can redistribute it and/or modify it under
the terms of version 2 of the GNU General Public License as published
by the Free Software Foundation and as clarified by db4objects' GPL
interpretation policy, available at
http://www.db4o.com/about/company/legalpolicies/gplinterpretation/
Alternatively you can write to db4objects, Inc., 1900 S Norfolk Street,
Suite 350, San Mateo, CA 94403, USA.
db4o is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
package com.db4o.test;
import com.db4o.*;
import com.db4o.ext.*;
import com.db4o.query.*;
public class PeekPersisted {
public String name;
public PeekPersisted child;
public void storeOne(){
PeekPersisted current = this;
current.name = "1";
for (int i = 2; i < 11; i++) {
current.child = new PeekPersisted();
current.child.name = "" + i;
current = current.child;
}
}
public void test(){
Query q = Test.query();
q.constrain(PeekPersisted.class);
q.descend("name").constrain("1");
ObjectSet objectSet = q.execute();
PeekPersisted pp = (PeekPersisted)objectSet.next();
for (int i = 0; i < 10; i++) {
peek(pp, i);
}
}
private void peek(PeekPersisted original, int depth){
ExtObjectContainer oc = Test.objectContainer();
PeekPersisted peeked = (PeekPersisted )oc.peekPersisted(original, depth, true);
Test.ensure(peeked != null);
Test.ensure(! oc.isStored(peeked));
for (int i = 0; i <= depth; i++) {
Test.ensure(peeked != null);
Test.ensure(! oc.isStored(peeked));
peeked = peeked.child;
}
Test.ensure(peeked == null);
}
}
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