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11 package org.mule.routing;
12
13 import org.mule.api.MuleContext;
14 import org.mule.api.MuleEvent;
15 import org.mule.api.MuleException;
16 import org.mule.api.lifecycle.InitialisationException;
17 import org.mule.config.i18n.CoreMessages;
18 import org.mule.routing.correlation.CorrelationSequenceComparator;
19 import org.mule.routing.correlation.EventCorrelatorCallback;
20 import org.mule.routing.correlation.ResequenceMessagesCorrelatorCallback;
21
22 import java.util.Comparator;
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33 public class Resequencer extends AbstractAggregator
34 {
35 protected Comparator eventComparator;
36
37 public Resequencer()
38 {
39 super();
40 this.setEventComparator(new CorrelationSequenceComparator());
41 }
42
43 @Override
44 public void initialise() throws InitialisationException
45 {
46 if (eventComparator == null)
47 {
48 throw new InitialisationException(CoreMessages.objectIsNull("eventComparator"), this);
49 }
50 super.initialise();
51 }
52
53 public Comparator getEventComparator()
54 {
55 return eventComparator;
56 }
57
58 public void setEventComparator(Comparator eventComparator)
59 {
60 this.eventComparator = eventComparator;
61 }
62
63 protected EventCorrelatorCallback getCorrelatorCallback(MuleContext muleContext)
64 {
65 return new ResequenceMessagesCorrelatorCallback(getEventComparator(), muleContext);
66 }
67
68 @Override
69 public MuleEvent process(MuleEvent event) throws MuleException
70 {
71 MuleEvent result = eventCorrelator.process(event);
72 if (result == null)
73 {
74 return null;
75 }
76 MuleEvent last = null;
77 for (MuleEvent muleEvent : (MuleEvent[]) result.getMessage().getPayload())
78 {
79 last = processNext(muleEvent);
80 }
81
82 return last;
83 }
84
85 }