Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
ResequenceCorrelatorCallback |
|
| 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. Note | |
22 | * that the {@link #aggregateEvents(org.mule.routing.EventGroup)} method only | |
23 | * resequences the events and returns an MuleEvent[] wrapped in a MuleMessage impl. | |
24 | * This means that this callback can ONLY be used with a {@link Resequencer} | |
25 | */ | |
26 | public class ResequenceCorrelatorCallback extends CollectionCorrelatorCallback | |
27 | { | |
28 | protected Comparator<MuleEvent> eventComparator; | |
29 | ||
30 | public ResequenceCorrelatorCallback(Comparator<MuleEvent> eventComparator, MuleContext muleContext) | |
31 | { | |
32 | 0 | super(muleContext); |
33 | 0 | this.eventComparator = eventComparator; |
34 | 0 | this.muleContext = muleContext; |
35 | 0 | } |
36 | ||
37 | /** | |
38 | * This method is invoked if the shouldAggregate method is called and returns | |
39 | * true. Once this method returns an aggregated message, the event group is | |
40 | * removed from the router. | |
41 | * | |
42 | * @param events the event group for this request | |
43 | * @return an aggregated message | |
44 | * @throws AggregationException | |
45 | * if the aggregation fails. in this scenario the | |
46 | * whole event group is removed and passed to the exception handler | |
47 | * for this componenet | |
48 | */ | |
49 | @Override | |
50 | public MuleEvent aggregateEvents(EventGroup events) throws AggregationException | |
51 | { | |
52 | MuleEvent results[]; | |
53 | 0 | if (events == null || events.size() == 0) |
54 | { | |
55 | 0 | results = EventGroup.EMPTY_EVENTS_ARRAY; |
56 | } | |
57 | else | |
58 | { | |
59 | 0 | results = events.toArray(); |
60 | 0 | Arrays.sort(results, eventComparator); |
61 | } | |
62 | //This is a bit of a hack since we wrap the the collection of events in a Mule Message to pass back | |
63 | 0 | return new DefaultMuleEvent(new DefaultMuleMessage(results, muleContext), results[0]); |
64 | } | |
65 | ||
66 | } |