| KeywordsUtil.java |
1 /**
2 * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3 *
4 *
5 *
6 *
7 * The contents of this file are subject to the terms of the Liferay Enterprise
8 * Subscription License ("License"). You may not use this file except in
9 * compliance with the License. You can obtain a copy of the License by
10 * contacting Liferay, Inc. See the License for the specific language governing
11 * permissions and limitations under the License, including but not limited to
12 * distribution rights 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 public class KeywordsUtil {
36
37 public static final String[] SPECIAL = new String[] {
38 "+", "-", "&&", "||", "!", "(", ")", "{", "}", "[", "]", "^", "\"", "~",
39 "*", "?", ":", "\\"
40 };
41
42 public static String escape(String text) {
43 for (int i = SPECIAL.length - 1; i >= 0; i--) {
44 text = StringUtil.replace(
45 text, SPECIAL[i], StringPool.BACK_SLASH + SPECIAL[i]);
46 }
47
48 return text;
49 }
50
51 public static String toFuzzy(String keywords) {
52 if (keywords == null) {
53 return null;
54 }
55
56 if (!keywords.endsWith(StringPool.TILDE)) {
57 keywords = keywords + StringPool.TILDE;
58 }
59
60 return keywords;
61 }
62
63 public static String toWildcard(String keywords) {
64 if (keywords == null) {
65 return null;
66 }
67
68 if (!keywords.endsWith(StringPool.STAR)) {
69 keywords = keywords + StringPool.STAR;
70 }
71
72 return keywords;
73 }
74
75 }