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package org.mule.module.atom.routing; |
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import org.mule.DefaultMuleMessage; |
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import org.mule.api.MessagingException; |
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import org.mule.api.MuleEvent; |
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import org.mule.api.MuleException; |
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import org.mule.api.MuleMessage; |
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import org.mule.api.routing.filter.Filter; |
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import org.mule.api.transformer.TransformerException; |
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import org.mule.module.atom.transformers.ObjectToFeed; |
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import org.mule.routing.AbstractSplitter; |
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import java.util.ArrayList; |
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import java.util.Comparator; |
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import java.util.List; |
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import java.util.Set; |
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import java.util.TreeSet; |
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import org.apache.abdera.model.Entry; |
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import org.apache.abdera.model.Feed; |
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import org.apache.commons.logging.Log; |
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import org.apache.commons.logging.LogFactory; |
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public class FeedSplitter extends AbstractSplitter |
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{ |
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43 | 0 | protected transient final Log logger = LogFactory.getLog(FeedSplitter.class); |
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public static final String FEED_PROPERTY = "feed.object"; |
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private Filter entryFilter; |
47 | 0 | private ObjectToFeed objectToFeed = new ObjectToFeed(); |
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public FeedSplitter() |
50 | 0 | { |
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52 | 0 | entryFilter = new EntryLastUpdatedFilter(null); |
53 | 0 | } |
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@Override |
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protected List<MuleMessage> splitMessage(MuleEvent event) throws MuleException |
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{ |
58 | 0 | List<MuleMessage> messages = new ArrayList<MuleMessage>(); |
59 | 0 | if(event.getMessage().getInboundProperty("Content-Length", -1) == 0) |
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{ |
61 | 0 | logger.info("Feed has no content, ignoring"); |
62 | 0 | return messages; |
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} |
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try |
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{ |
67 | 0 | Object payload = event.getMessage().getPayload(); |
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Feed feed; |
70 | 0 | if (payload instanceof Feed) |
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{ |
72 | 0 | feed = (Feed) payload; |
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} |
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else |
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{ |
76 | 0 | feed = (Feed) objectToFeed.transform(event.getMessage().getPayload()); |
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} |
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79 | 0 | Set<Entry> entries = new TreeSet<Entry>(new EntryComparator()); |
80 | 0 | entries.addAll(feed.getEntries()); |
81 | 0 | for (Entry entry : entries) |
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{ |
83 | 0 | MuleMessage m = new DefaultMuleMessage(entry, event.getMuleContext()); |
84 | 0 | if (entryFilter != null && !entryFilter.accept(m)) |
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{ |
86 | 0 | continue; |
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} |
88 | 0 | m.setInvocationProperty(FEED_PROPERTY, feed); |
89 | 0 | messages.add(m); |
90 | 0 | } |
91 | 0 | return messages; |
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} |
93 | 0 | catch (TransformerException e) |
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{ |
95 | 0 | throw new MessagingException(e.getI18nMessage(), event, e); |
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} |
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} |
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public Filter getEntryFilter() |
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{ |
101 | 0 | return entryFilter; |
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} |
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public void setEntryFilter(Filter entryFilter) |
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{ |
106 | 0 | this.entryFilter = entryFilter; |
107 | 0 | } |
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109 | 0 | class EntryComparator implements Comparator<Entry> |
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{ |
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public int compare(Entry e1, Entry e2) |
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{ |
113 | 0 | if(e1==null && e2 !=null) |
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{ |
115 | 0 | return -1; |
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} |
117 | 0 | else if(e1!=null && e2 ==null) |
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{ |
119 | 0 | return 1; |
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} |
121 | 0 | else if(e1==null && e2 ==null) |
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{ |
123 | 0 | return 0; |
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} |
125 | 0 | else if (e1.getPublished() !=null && e1.getPublished().before(e2.getPublished())) |
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{ |
127 | 0 | return -1; |
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} |
129 | 0 | else if (e1.equals(e2)) |
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{ |
131 | 0 | return 0; |
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} |
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else |
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{ |
135 | 0 | return 1; |
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} |
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} |
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} |
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} |