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.internal.query.processor;
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,
54: Object a_value) {
55: return !i_evaluator
56: .evaluate(a_constraint, a_candidate, a_value);
57: }
58:
59: boolean not(boolean res) {
60: return !res;
61: }
62:
63: public void indexBitMap(boolean[] bits) {
64: i_evaluator.indexBitMap(bits);
65: for (int i = 0; i < 4; i++) {
66: bits[i] = !bits[i];
67: }
68: }
69:
70: public boolean supportsIndex() {
71: return i_evaluator.supportsIndex();
72: }
73: }
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