| KeywordsUtil.java |
1 /**
2 * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3 *
4 * The contents of this file are subject to the terms of the Liferay Enterprise
5 * Subscription License ("License"). You may not use this file except in
6 * compliance with the License. You can obtain a copy of the License by
7 * contacting Liferay, Inc. See the License for the specific language governing
8 * permissions and limitations under the License, including but not limited to
9 * distribution rights of the Software.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
12 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
14 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
15 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
17 * SOFTWARE.
18 */
19
20 package com.liferay.util.lucene;
21
22 import com.liferay.portal.kernel.util.StringPool;
23 import com.liferay.portal.kernel.util.StringUtil;
24
25 /**
26 * <a href="KeywordsUtil.java.html"><b><i>View Source</i></b></a>
27 *
28 * @author Brian Wing Shun Chan
29 * @author Mirco Tamburini
30 * @author Josiah Goh
31 *
32 */
33 public class KeywordsUtil {
34
35 public static final String[] SPECIAL = new String[] {
36 "+", "-", "&&", "||", "!", "(", ")", "{", "}", "[", "]", "^", "\"", "~",
37 "*", "?", ":", "\\"
38 };
39
40 public static String escape(String text) {
41 for (int i = SPECIAL.length - 1; i >= 0; i--) {
42 text = StringUtil.replace(
43 text, SPECIAL[i], StringPool.BACK_SLASH + SPECIAL[i]);
44 }
45
46 return text;
47 }
48
49 public static String toFuzzy(String keywords) {
50 if (keywords == null) {
51 return null;
52 }
53
54 if (!keywords.endsWith(StringPool.TILDE)) {
55 keywords = keywords + StringPool.TILDE;
56 }
57
58 return keywords;
59 }
60
61 public static String toWildcard(String keywords) {
62 if (keywords == null) {
63 return null;
64 }
65
66 if (!keywords.endsWith(StringPool.STAR)) {
67 keywords = keywords + StringPool.STAR;
68 }
69
70 return keywords;
71 }
72
73 }