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Java > Open Source Codes > com > db4o > QENot


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 /**
24  * @exclude
25  */
26 public class QENot extends QE{
27     
28     public QE i_evaluator;
29     
30     public QENot(){
31         // CS
32 }
33     
34     QENot(QE a_evaluator){
35         i_evaluator = a_evaluator;
36     }
37     
38     QE add(QE evaluator){
39         if(! (evaluator instanceof QENot)){
40             i_evaluator = i_evaluator.add(evaluator);
41         }
42         return this;
43     }
44     
45     public boolean identity(){
46         return i_evaluator.identity();
47     }
48     
49     boolean isDefault(){
50         return false;
51     }
52     
53     boolean evaluate(QConObject a_constraint, QCandidate a_candidate, Object JavaDoc a_value){
54         return ! i_evaluator.evaluate(a_constraint, a_candidate, a_value);
55     }
56     
57     boolean not(boolean res){
58         return ! res;
59     }
60     
61     public void indexBitMap(boolean[] bits){
62         i_evaluator.indexBitMap(bits);
63         for (int i = 0; i < 4; i++) {
64             bits[i] = ! bits[i];
65         }
66     }
67     
68     public boolean supportsIndex(){
69         return i_evaluator.supportsIndex();
70     }
71 }
72
73
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