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 }