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 * @(#)StringTerm.java 1.9 07/05/04
39 */
40
41 package javax.mail.search;
42
43 /**
44 * This class implements the match method for Strings. The current
45 * implementation provides only for substring matching. We
46 * could add comparisons (like strcmp ...).
47 *
48 * @author Bill Shannon
49 * @author John Mani
50 */
51 public abstract class StringTerm extends SearchTerm {
52 /**
53 * The pattern.
54 *
55 * @serial
56 */
57 protected String pattern;
58
59 /**
60 * Ignore case when comparing?
61 *
62 * @serial
63 */
64 protected boolean ignoreCase;
65
66 private static final long serialVersionUID = 1274042129007696269L;
67
68 protected StringTerm(String pattern) {
69 this.pattern = pattern;
70 ignoreCase = true;
71 }
72
73 protected StringTerm(String pattern, boolean ignoreCase) {
74 this.pattern = pattern;
75 this.ignoreCase = ignoreCase;
76 }
77
78 /**
79 * Return the string to match with.
80 */
81 public String getPattern() {
82 return pattern;
83 }
84
85 /**
86 * Return true if we should ignore case when matching.
87 */
88 public boolean getIgnoreCase() {
89 return ignoreCase;
90 }
91
92 protected boolean match(String s) {
93 int len = s.length() - pattern.length();
94 for (int i=0; i <= len; i++) {
95 if (s.regionMatches(ignoreCase, i,
96 pattern, 0, pattern.length()))
97 return true;
98 }
99 return false;
100 }
101
102 /**
103 * Equality comparison.
104 */
105 public boolean equals(Object obj) {
106 if (!(obj instanceof StringTerm))
107 return false;
108 StringTerm st = (StringTerm)obj;
109 if (ignoreCase)
110 return st.pattern.equalsIgnoreCase(this.pattern) &&
111 st.ignoreCase == this.ignoreCase;
112 else
113 return st.pattern.equals(this.pattern) &&
114 st.ignoreCase == this.ignoreCase;
115 }
116
117 /**
118 * Compute a hashCode for this object.
119 */
120 public int hashCode() {
121 return ignoreCase ? pattern.hashCode() : ~pattern.hashCode();
122 }
123 }
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