001 package org.apache.archiva.rss;
002
003 /*
004 * Licensed to the Apache Software Foundation (ASF) under one
005 * or more contributor license agreements. See the NOTICE file
006 * distributed with this work for additional information
007 * regarding copyright ownership. The ASF licenses this file
008 * to you under the Apache License, Version 2.0 (the
009 * "License"); you may not use this file except in compliance
010 * with the License. You may obtain a copy of the License at
011 *
012 * http://www.apache.org/licenses/LICENSE-2.0
013 *
014 * Unless required by applicable law or agreed to in writing,
015 * software distributed under the License is distributed on an
016 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
017 * KIND, either express or implied. See the License for the
018 * specific language governing permissions and limitations
019 * under the License.
020 */
021
022 import java.util.ArrayList;
023 import java.util.List;
024
025 import org.slf4j.Logger;
026 import org.slf4j.LoggerFactory;
027
028 import com.sun.syndication.feed.synd.SyndContent;
029 import com.sun.syndication.feed.synd.SyndContentImpl;
030 import com.sun.syndication.feed.synd.SyndEntry;
031 import com.sun.syndication.feed.synd.SyndEntryImpl;
032 import com.sun.syndication.feed.synd.SyndFeed;
033 import com.sun.syndication.feed.synd.SyndFeedImpl;
034 import org.springframework.context.annotation.Scope;
035 import org.springframework.stereotype.Service;
036
037 /**
038 * Generates RSS feeds.
039 *
040 */
041 @Service("rssFeedGenerator#default")
042 @Scope("prototype")
043 public class RssFeedGenerator
044 {
045 private Logger log = LoggerFactory.getLogger( RssFeedGenerator.class );
046
047 // TODO: make configurable
048 public static String DEFAULT_FEEDTYPE = "rss_2.0";
049
050 public static String DEFAULT_LANGUAGE = "en-us";
051
052 public SyndFeed generateFeed( String title, String description, List<RssFeedEntry> dataEntries )
053 {
054 if( dataEntries.size() == 0 )
055 {
056 log.debug( "No updates found, feed not generated." );
057 return null;
058 }
059
060 SyndFeed feed = new SyndFeedImpl();
061 feed.setTitle( title );
062 feed.setDescription( description );
063 feed.setLanguage( DEFAULT_LANGUAGE );
064 feed.setPublishedDate( dataEntries.get( dataEntries.size() - 1 ).getPublishedDate() );
065 feed.setFeedType( DEFAULT_FEEDTYPE );
066 feed.setEntries( getEntries( dataEntries ) );
067
068 log.debug( "Finished generating the feed \'{}\'.", title );
069
070 return feed;
071 }
072
073 private List<SyndEntry> getEntries( List<RssFeedEntry> dataEntries )
074 {
075 List<SyndEntry> entries = new ArrayList<SyndEntry>();
076
077 SyndEntry entry;
078 SyndContent description;
079
080 for ( RssFeedEntry dataEntry : dataEntries )
081 {
082 entry = new SyndEntryImpl();
083 entry.setTitle( dataEntry.getTitle() );
084 entry.setPublishedDate( dataEntry.getPublishedDate() );
085
086 description = new SyndContentImpl();
087 description.setType( "text/plain" );
088 description.setValue( dataEntry.getDescription() );
089 entry.setDescription( description );
090
091 entries.add( entry );
092 }
093
094 return entries;
095 }
096 }