| AmazonRankingsUtil.java |
1 /**
2 * Copyright (c) 2000-2008 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.portlet.amazonrankings.util;
24
25 import com.liferay.portal.kernel.util.StringPool;
26 import com.liferay.portal.kernel.webcache.WebCacheItem;
27 import com.liferay.portal.kernel.webcache.WebCachePoolUtil;
28 import com.liferay.portal.util.PropsUtil;
29 import com.liferay.portlet.amazonrankings.model.AmazonRankings;
30
31 import java.util.List;
32 import java.util.Vector;
33
34 /**
35 * <a href="AmazonRankingsUtil.java.html"><b><i>View Source</i></b></a>
36 *
37 * @author Brian Wing Shun Chan
38 *
39 */
40 public class AmazonRankingsUtil {
41
42 public static String getAmazonKey() {
43 return _instance._getAmazonKey();
44 }
45
46 public static AmazonRankings getAmazonRankings(String isbn) {
47 WebCacheItem wci = new AmazonRankingsWebCacheItem(isbn);
48
49 return (AmazonRankings)WebCachePoolUtil.get(
50 AmazonRankingsUtil.class.getName() + StringPool.PERIOD + isbn, wci);
51 }
52
53 private AmazonRankingsUtil() {
54 _amazonLicenseKeys = new Vector<String>();
55
56 for (int i = 0; i < 1000; i++) {
57 String key = PropsUtil.get(PropsUtil.AMAZON_LICENSE + i);
58
59 if (key == null) {
60 break;
61 }
62 else {
63 _amazonLicenseKeys.add(key);
64 }
65 }
66 }
67
68 private String _getAmazonKey() {
69 if (_amazonLicenseKeys.size() > 0) {
70 _amazonLicenseCount++;
71
72 if (_amazonLicenseCount >= _amazonLicenseKeys.size()) {
73 _amazonLicenseCount = 0;
74 }
75
76 return _amazonLicenseKeys.get(_amazonLicenseCount);
77 }
78 else {
79 return null;
80 }
81 }
82
83 private static AmazonRankingsUtil _instance = new AmazonRankingsUtil();
84
85 private List<String> _amazonLicenseKeys;
86 private int _amazonLicenseCount;
87
88 }