1   /**
2    * Copyright (c) 2000-2007 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.util.WebCacheable;
26  import com.liferay.util.ConverterException;
27  import com.liferay.util.Time;
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="RSSConverter.java.html"><b><i>View Source</i></b></a>
37   *
38   * @author Brian Wing Shun Chan
39   *
40   */
41  public class RSSConverter implements WebCacheable {
42  
43      public RSSConverter(String url) {
44          _url = url;
45      }
46  
47      public Object convert(String id) throws ConverterException {
48          SyndFeed feed = null;
49  
50          try {
51  
52              // com.liferay.util.Http will break the connection if it spends
53              // more than 5 seconds looking up a location. However, German
54              // umlauts do not get encoded correctly. This may be a bug with
55              // commons-httpclient or with how FeedParser uses java.io.Reader.
56  
57              // Use http://xml.newsisfree.com/feeds/29/629.xml and
58              // http://test.domosoft.com/up/RSS to test if German umlauts show
59              // up correctly.
60  
61              /*Reader reader = new StringReader(
62                  new String(Http.URLtoByteArray(_url)));
63  
64              channel = FeedParser.parse(builder, reader);*/
65  
66              SyndFeedInput input = new SyndFeedInput();
67  
68              feed = input.build(new XmlReader(new URL(_url)));
69          }
70          catch (Exception e) {
71              throw new ConverterException(_url + " " + e.toString());
72          }
73  
74          return feed;
75      }
76  
77      public long getRefreshTime() {
78          return _REFRESH_TIME;
79      }
80  
81      private static final long _REFRESH_TIME = Time.MINUTE * 20;
82  
83      private String _url;
84  
85  }