Coverage Report - org.mule.module.atom.routing.FeedSplitter
 
Classes in this File Line Coverage Branch Coverage Complexity
FeedSplitter
0%
0/28
0%
0/10
0
FeedSplitter$EntryComparator
0%
0/12
0%
0/18
0
 
 1  
 /*
 2  
  * $Id: FeedSplitter.java 20321 2010-11-24 15:21:24Z dfeist $
 3  
  * --------------------------------------------------------------------------------------
 4  
  * Copyright (c) MuleSoft, Inc.  All rights reserved.  http://www.mulesoft.com
 5  
  *
 6  
  * The software in this package is published under the terms of the CPAL v1.0
 7  
  * license, a copy of which has been included with this distribution in the
 8  
  * LICENSE.txt file.
 9  
  */
 10  
 package org.mule.module.atom.routing;
 11  
 
 12  
 import org.mule.DefaultMuleMessage;
 13  
 import org.mule.api.MessagingException;
 14  
 import org.mule.api.MuleEvent;
 15  
 import org.mule.api.MuleException;
 16  
 import org.mule.api.MuleMessage;
 17  
 import org.mule.api.routing.filter.Filter;
 18  
 import org.mule.api.transformer.TransformerException;
 19  
 import org.mule.module.atom.transformers.ObjectToFeed;
 20  
 import org.mule.routing.AbstractSplitter;
 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.abdera.model.Entry;
 29  
 import org.apache.abdera.model.Feed;
 30  
 import org.apache.commons.logging.Log;
 31  
 import org.apache.commons.logging.LogFactory;
 32  
 
 33  
 /**
 34  
  * An inbound router that will split a Feed into entries. A filter can be applied to the entries to omit
 35  
  * certain entries, the most common use of this would be to filter out entries that have already been read
 36  
  * by using the {@link org.mule.module.atom.routing.EntryLastUpdatedFilter} filter.
 37  
  */
 38  
 public class FeedSplitter extends AbstractSplitter
 39  
 {
 40  
     /**
 41  
      * logger used by this class
 42  
      */
 43  0
     protected transient final Log logger = LogFactory.getLog(FeedSplitter.class);
 44  
 
 45  
     public static final String FEED_PROPERTY = "feed.object";
 46  
     private Filter entryFilter;
 47  0
     private ObjectToFeed objectToFeed = new ObjectToFeed();
 48  
 
 49  
     public FeedSplitter()
 50  0
     {
 51  
         //By default set the filter so that entries are only read once
 52  0
         entryFilter = new EntryLastUpdatedFilter(null);
 53  0
     }
 54  
 
 55  
     @Override
 56  
     protected List<MuleMessage> splitMessage(MuleEvent event) throws MuleException
 57  
     {
 58  0
         List<MuleMessage> messages = new ArrayList<MuleMessage>();        
 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
             Object payload = event.getMessage().getPayload();
 68  
             
 69  
             Feed feed;
 70  0
             if (payload instanceof Feed)
 71  
             {
 72  0
                 feed = (Feed) payload;
 73  
             }
 74  
             else
 75  
             {
 76  0
                 feed = (Feed) objectToFeed.transform(event.getMessage().getPayload());
 77  
             }
 78  
 
 79  0
             Set<Entry> entries = new TreeSet<Entry>(new EntryComparator());
 80  0
             entries.addAll(feed.getEntries());
 81  0
             for (Entry entry : entries)
 82  
             {
 83  0
                 MuleMessage m = new DefaultMuleMessage(entry, event.getMuleContext());
 84  0
                 if (entryFilter != null && !entryFilter.accept(m))
 85  
                 {
 86  0
                     continue;
 87  
                 }
 88  0
                 m.setInvocationProperty(FEED_PROPERTY, feed);
 89  0
                 messages.add(m);
 90  0
             }
 91  0
             return messages;
 92  
         }
 93  0
         catch (TransformerException e)
 94  
         {
 95  0
             throw new MessagingException(e.getI18nMessage(), event, e);
 96  
         }
 97  
     }
 98  
 
 99  
     public Filter getEntryFilter()
 100  
     {
 101  0
         return entryFilter;
 102  
     }
 103  
 
 104  
     public void setEntryFilter(Filter entryFilter)
 105  
     {
 106  0
         this.entryFilter = entryFilter;
 107  0
     }
 108  
 
 109  0
     class EntryComparator implements Comparator<Entry>
 110  
     {
 111  
         public int compare(Entry e1, Entry e2)
 112  
         {
 113  0
             if(e1==null && e2 !=null)
 114  
             {
 115  0
                 return -1;
 116  
             }
 117  0
             else if(e1!=null && e2 ==null)
 118  
             {
 119  0
                 return 1;
 120  
             }
 121  0
             else if(e1==null && e2 ==null)
 122  
             {
 123  0
                 return 0;
 124  
             }
 125  0
             else if (e1.getPublished() !=null && e1.getPublished().before(e2.getPublished()))
 126  
             {
 127  0
                 return -1;
 128  
             }
 129  0
             else if (e1.equals(e2))
 130  
             {
 131  0
                 return 0;
 132  
             }
 133  
             else
 134  
             {
 135  0
                 return 1;
 136  
             }
 137  
         }
 138  
     }
 139  
 }