Coverage Report - org.mule.module.rss.routing.FeedSplitter
 
Classes in this File Line Coverage Branch Coverage Complexity
FeedSplitter
0%
0/29
0%
0/10
0
FeedSplitter$EntryComparator
0%
0/6
0%
0/4
0
 
 1  
 /*
 2  
  * Copyright (c) MuleSoft, Inc.  All rights reserved.  http://www.mulesoft.com
 3  
  * The software in this package is published under the terms of the CPAL v1.0
 4  
  * license, a copy of which has been included with this distribution in the
 5  
  * LICENSE.txt file.
 6  
  */
 7  
 package org.mule.module.rss.routing;
 8  
 
 9  
 import org.mule.DefaultMuleMessage;
 10  
 import org.mule.api.MessagingException;
 11  
 import org.mule.api.MuleEvent;
 12  
 import org.mule.api.MuleException;
 13  
 import org.mule.api.MuleMessage;
 14  
 import org.mule.api.routing.filter.Filter;
 15  
 import org.mule.api.transformer.TransformerException;
 16  
 import org.mule.module.rss.transformers.ObjectToRssFeed;
 17  
 import org.mule.routing.AbstractSplitter;
 18  
 
 19  
 import com.sun.syndication.feed.synd.SyndEntry;
 20  
 import com.sun.syndication.feed.synd.SyndFeed;
 21  
 
 22  
 import java.util.ArrayList;
 23  
 import java.util.Comparator;
 24  
 import java.util.List;
 25  
 import java.util.Set;
 26  
 import java.util.TreeSet;
 27  
 
 28  
 import org.apache.commons.logging.Log;
 29  
 import org.apache.commons.logging.LogFactory;
 30  
 
 31  
 /**
 32  
  * Will split the feed into entries. This message processor also filters out any entries that
 33  
  * are older than the last one read. The filter can be configured with a date from
 34  
  * which to accept feed entries
 35  
  */
 36  
 public class FeedSplitter extends AbstractSplitter
 37  
 {
 38  
     public static final String FEED_PROPERTY = "feed.object";
 39  
 
 40  
     /**
 41  
      * logger used by this class
 42  
      */
 43  0
     protected transient final Log logger = LogFactory.getLog(FeedSplitter.class);
 44  
 
 45  
     private Filter entryFilter;
 46  0
     private ObjectToRssFeed objectToFeed = new ObjectToRssFeed();
 47  
 
 48  
     public FeedSplitter()
 49  0
     {
 50  
         // By default set the filter so that entries are only read once
 51  0
         entryFilter = new EntryLastUpdatedFilter(null);
 52  0
     }
 53  
 
 54  
     @Override
 55  
     protected List<MuleMessage> splitMessage(MuleEvent event) throws MuleException
 56  
     {
 57  0
         List<MuleMessage> messages = new ArrayList<MuleMessage>();
 58  
 
 59  0
         if (event.getMessage().getInboundProperty("Content-Length", -1) == 0)
 60  
         {
 61  0
             logger.info("Feed has no content, ignoring");
 62  0
             return messages;
 63  
         }
 64  
 
 65  
         try
 66  
         {
 67  0
             SyndFeed feed = transformToFeed(event);
 68  
 
 69  0
             Set<SyndEntry> entries = new TreeSet<SyndEntry>(new EntryComparator());
 70  0
             entries.addAll(feed.getEntries());
 71  
 
 72  0
             for (SyndEntry entry : entries)
 73  
             {
 74  0
                 MuleMessage entryMessage = new DefaultMuleMessage(entry, event.getMuleContext());
 75  0
                 if ((entryFilter != null) && !entryFilter.accept(entryMessage))
 76  
                 {
 77  0
                     continue;
 78  
                 }
 79  
 
 80  0
                 entryMessage.setInvocationProperty(FEED_PROPERTY, feed);
 81  0
                 messages.add(entryMessage);
 82  0
             }
 83  0
             return messages;
 84  
         }
 85  0
         catch (MuleException e)
 86  
         {
 87  0
             throw new MessagingException(e.getI18nMessage(), event, e);
 88  
         }
 89  
     }
 90  
 
 91  
     protected SyndFeed transformToFeed(MuleEvent event) throws TransformerException
 92  
     {
 93  0
         Object payload = event.getMessage().getPayload();
 94  0
         if (payload instanceof SyndFeed)
 95  
         {
 96  0
             return (SyndFeed) payload;
 97  
         }
 98  
         else
 99  
         {
 100  0
             return (SyndFeed) objectToFeed.transform(payload);
 101  
         }
 102  
     }
 103  
 
 104  
     public Filter getEntryFilter()
 105  
     {
 106  0
         return entryFilter;
 107  
     }
 108  
 
 109  
     public void setEntryFilter(Filter entryFilter)
 110  
     {
 111  0
         this.entryFilter = entryFilter;
 112  0
     }
 113  
 
 114  0
     static class EntryComparator implements Comparator<SyndEntry>
 115  
     {
 116  
         public int compare(SyndEntry e1, SyndEntry e2)
 117  
         {
 118  0
             if (e1.getPublishedDate().before(e2.getPublishedDate()))
 119  
             {
 120  0
                 return -1;
 121  
             }
 122  0
             else if (e1.equals(e2))
 123  
             {
 124  0
                 return 0;
 125  
             }
 126  
             else
 127  
             {
 128  0
                 return 1;
 129  
             }
 130  
         }
 131  
     }
 132  
 }