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Java > Open Source Codes > com > db4o > P1Collection


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;
22
23 import com.db4o.types.*;
24
25 /**
26  * base class for database aware collections
27  * @exclude
28  * @persistent
29  * @sharpen.ignore
30  */
31 public abstract class P1Collection extends P1Object implements Db4oCollection{
32     
33     // This is an off-by-one variable.
34 // 0 means default, use standard activation depth
35 // a value greater than 0 means (value - 1)
36 private transient int i_activationDepth;
37     
38     transient boolean i_deleteRemoved;
39     
40     public void activationDepth(int a_depth){
41         i_activationDepth = a_depth + 1;
42     }
43     
44     public void deleteRemoved(boolean a_flag){
45         i_deleteRemoved = a_flag;
46     }
47     
48     int elementActivationDepth(){
49         return i_activationDepth - 1;
50     }
51
52 }
53
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