1 /*
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
3 *
4 * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
5 *
6 * The contents of this file are subject to the terms of either the GNU
7 * General Public License Version 2 only ("GPL") or the Common Development
8 * and Distribution License("CDDL") (collectively, the "License"). You
9 * may not use this file except in compliance with the License. You can obtain
10 * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
11 * or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
12 * language governing permissions and limitations under the License.
13 *
14 * When distributing the software, include this License Header Notice in each
15 * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
16 * Sun designates this particular file as subject to the "Classpath" exception
17 * as provided by Sun in the GPL Version 2 section of the License file that
18 * accompanied this code. If applicable, add the following below the License
19 * Header, with the fields enclosed by brackets [] replaced by your own
20 * identifying information: "Portions Copyrighted [year]
21 * [name of copyright owner]"
22 *
23 * Contributor(s):
24 *
25 * If you wish your version of this file to be governed by only the CDDL or
26 * only the GPL Version 2, indicate your decision by adding "[Contributor]
27 * elects to include this software in this distribution under the [CDDL or GPL
28 * Version 2] license." If you don't indicate a single choice of license, a
29 * recipient has the option to distribute your version of this file under
30 * either the CDDL, the GPL Version 2 or to extend the choice of license to
31 * its licensees as provided above. However, if you add GPL Version 2 code
32 * and therefore, elected the GPL Version 2 license, then the option applies
33 * only if the new code is made subject to such option by the copyright
34 * holder.
35 */
36
37 /*
38 * @(#)NotTerm.java 1.10 07/05/04
39 */
40
41 package javax.mail.search;
42
43 import javax.mail.Message;
44
45 /**
46 * This class implements the logical NEGATION operator.
47 *
48 * @author Bill Shannon
49 * @author John Mani
50 */
51 public final class NotTerm extends SearchTerm {
52 /**
53 * The search term to negate.
54 *
55 * @serial
56 */
57 protected SearchTerm term;
58
59 private static final long serialVersionUID = 7152293214217310216L;
60
61 public NotTerm(SearchTerm t) {
62 term = t;
63 }
64
65 /**
66 * Return the term to negate.
67 */
68 public SearchTerm getTerm() {
69 return term;
70 }
71
72 /* The NOT operation */
73 public boolean match(Message msg) {
74 return !term.match(msg);
75 }
76
77 /**
78 * Equality comparison.
79 */
80 public boolean equals(Object obj) {
81 if (!(obj instanceof NotTerm))
82 return false;
83 NotTerm nt = (NotTerm)obj;
84 return nt.term.equals(this.term);
85 }
86
87 /**
88 * Compute a hashCode for this object.
89 */
90 public int hashCode() {
91 return term.hashCode() << 1;
92 }
93 }
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