| RSSWebCacheItem.java |
1 /**
2 * Copyright (c) 2000-2010 Liferay, Inc. All rights reserved.
3 *
4 * This library is free software; you can redistribute it and/or modify it under
5 * the terms of the GNU Lesser General Public License as published by the Free
6 * Software Foundation; either version 2.1 of the License, or (at your option)
7 * any later version.
8 *
9 * This library is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
11 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
12 * details.
13 */
14
15 package com.liferay.portlet.rss.util;
16
17 import com.liferay.portal.kernel.util.Time;
18 import com.liferay.portal.kernel.webcache.WebCacheException;
19 import com.liferay.portal.kernel.webcache.WebCacheItem;
20
21 import com.sun.syndication.feed.synd.SyndFeed;
22 import com.sun.syndication.io.SyndFeedInput;
23 import com.sun.syndication.io.XmlReader;
24
25 import java.net.URL;
26
27 /**
28 * <a href="RSSWebCacheItem.java.html"><b><i>View Source</i></b></a>
29 *
30 * @author Brian Wing Shun Chan
31 */
32 public class RSSWebCacheItem implements WebCacheItem {
33
34 public RSSWebCacheItem(String url) {
35 _url = url;
36 }
37
38 public Object convert(String key) throws WebCacheException {
39 SyndFeed feed = null;
40
41 try {
42
43 // com.liferay.portal.kernel.util.HttpUtil will break the connection
44 // if it spends more than 5 seconds looking up a location. However,
45 // German umlauts do not get encoded correctly. This may be a bug
46 // with commons-httpclient or with how FeedParser uses
47 // java.io.Reader.
48
49 // Use http://xml.newsisfree.com/feeds/29/629.xml and
50 // http://test.domosoft.com/up/RSS to test if German umlauts show
51 // up correctly.
52
53 /*Reader reader = new StringReader(
54 new String(HttpUtil.URLtoByteArray(_url)));
55
56 channel = FeedParser.parse(builder, reader);*/
57
58 SyndFeedInput input = new SyndFeedInput();
59
60 feed = input.build(new XmlReader(new URL(_url)));
61 }
62 catch (Exception e) {
63 throw new WebCacheException(_url + " " + e.toString());
64 }
65
66 return feed;
67 }
68
69 public long getRefreshTime() {
70 return _REFRESH_TIME;
71 }
72
73 private static final long _REFRESH_TIME = Time.MINUTE * 20;
74
75 private String _url;
76
77 }