| KeywordsUtil.java |
1 /**
2 * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to deal
6 * in the Software without restriction, including without limitation the rights
7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 * copies of the Software, and to permit persons to whom the Software is
9 * furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 * SOFTWARE.
21 */
22
23 package com.liferay.util.lucene;
24
25 import com.liferay.portal.kernel.util.StringPool;
26 import com.liferay.portal.kernel.util.StringUtil;
27
28 /**
29 * <a href="KeywordsUtil.java.html"><b><i>View Source</i></b></a>
30 *
31 * @author Brian Wing Shun Chan
32 * @author Mirco Tamburini
33 * @author Josiah Goh
34 *
35 */
36 public class KeywordsUtil {
37
38 public static final String[] SPECIAL = new String[] {
39 "+", "-", "&&", "||", "!", "(", ")", "{", "}", "[", "]", "^", "\"", "~",
40 "*", "?", ":", "\\"
41 };
42
43 public static String escape(String text) {
44 for (int i = SPECIAL.length - 1; i >= 0; i--) {
45 text = StringUtil.replace(
46 text, SPECIAL[i], StringPool.BACK_SLASH + SPECIAL[i]);
47 }
48
49 return text;
50 }
51
52 public static String toFuzzy(String keywords) {
53 if (keywords == null) {
54 return null;
55 }
56
57 if (!keywords.endsWith(StringPool.TILDE)) {
58 keywords = keywords + StringPool.TILDE;
59 }
60
61 return keywords;
62 }
63
64 public static String toWildcard(String keywords) {
65 if (keywords == null) {
66 return null;
67 }
68
69 if (!keywords.endsWith(StringPool.STAR)) {
70 keywords = keywords + StringPool.STAR;
71 }
72
73 return keywords;
74 }
75
76 }