| RSSWebCacheItem.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.portlet.rss.util;
24
25 import com.liferay.portal.kernel.util.Time;
26 import com.liferay.portal.kernel.webcache.WebCacheException;
27 import com.liferay.portal.kernel.webcache.WebCacheItem;
28
29 import com.sun.syndication.feed.synd.SyndFeed;
30 import com.sun.syndication.io.SyndFeedInput;
31 import com.sun.syndication.io.XmlReader;
32
33 import java.net.URL;
34
35 /**
36 * <a href="RSSWebCacheItem.java.html"><b><i>View Source</i></b></a>
37 *
38 * @author Brian Wing Shun Chan
39 *
40 */
41 public class RSSWebCacheItem implements WebCacheItem {
42
43 public RSSWebCacheItem(String url) {
44 _url = url;
45 }
46
47 public Object convert(String key) throws WebCacheException {
48 SyndFeed feed = null;
49
50 try {
51
52 // com.liferay.portal.kernel.util.HttpUtil will break the connection
53 // if it spends more than 5 seconds looking up a location. However,
54 // German umlauts do not get encoded correctly. This may be a bug
55 // with commons-httpclient or with how FeedParser uses
56 // java.io.Reader.
57
58 // Use http://xml.newsisfree.com/feeds/29/629.xml and
59 // http://test.domosoft.com/up/RSS to test if German umlauts show
60 // up correctly.
61
62 /*Reader reader = new StringReader(
63 new String(HttpUtil.URLtoByteArray(_url)));
64
65 channel = FeedParser.parse(builder, reader);*/
66
67 SyndFeedInput input = new SyndFeedInput();
68
69 feed = input.build(new XmlReader(new URL(_url)));
70 }
71 catch (Exception e) {
72 throw new WebCacheException(_url + " " + e.toString());
73 }
74
75 return feed;
76 }
77
78 public long getRefreshTime() {
79 return _REFRESH_TIME;
80 }
81
82 private static final long _REFRESH_TIME = Time.MINUTE * 20;
83
84 private String _url;
85
86 }