Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
ResequenceMessagesCorrelatorCallback |
|
| 0.0;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.routing.correlation; | |
8 | ||
9 | import org.mule.DefaultMuleEvent; | |
10 | import org.mule.DefaultMuleMessage; | |
11 | import org.mule.api.MuleContext; | |
12 | import org.mule.api.MuleEvent; | |
13 | import org.mule.routing.AggregationException; | |
14 | import org.mule.routing.EventGroup; | |
15 | import org.mule.routing.Resequencer; | |
16 | ||
17 | import java.util.Arrays; | |
18 | import java.util.Comparator; | |
19 | ||
20 | /** | |
21 | * A Correlator that correlates messages based on Mule correlation settings | |
22 | * Note that the {@link #aggregateEvents(org.mule.routing.EventGroup)} method only resequences the events and | |
23 | * returns an MuleEvent[] wrapped in a MuleMessage impl. This means that this callback can ONLY be used with a | |
24 | * {@link Resequencer} | |
25 | */ | |
26 | public class ResequenceMessagesCorrelatorCallback extends CollectionCorrelatorCallback | |
27 | { | |
28 | protected Comparator eventComparator; | |
29 | protected MuleContext muleContext; | |
30 | ||
31 | public ResequenceMessagesCorrelatorCallback(Comparator eventComparator, MuleContext muleContext) | |
32 | { | |
33 | 0 | super(muleContext); |
34 | 0 | this.eventComparator = eventComparator; |
35 | 0 | this.muleContext = muleContext; |
36 | 0 | } |
37 | ||
38 | /** | |
39 | * This method is invoked if the shouldAggregate method is called and returns | |
40 | * true. Once this method returns an aggregated message, the event group is | |
41 | * removed from the router. | |
42 | * | |
43 | * @param events the event group for this request | |
44 | * @return an aggregated message | |
45 | * @throws org.mule.routing.AggregationException if the aggregation fails. in | |
46 | * this scenario the whole event group is removed and passed to the | |
47 | * exception handler for this componenet | |
48 | */ | |
49 | @Override | |
50 | public MuleEvent aggregateEvents(EventGroup events) throws AggregationException | |
51 | { | |
52 | 0 | MuleEvent[] results = (events == null) ? new MuleEvent[0] : events.toArray(); |
53 | 0 | Arrays.sort(results, eventComparator); |
54 | //This is a bit of a hack since we return a collection of events on one message | |
55 | 0 | return new DefaultMuleEvent(new DefaultMuleMessage(results, muleContext), results[0]); |
56 | } | |
57 | ||
58 | } |