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73005152 | 1 | /********************************************************************** |
c8422608 | 2 | * Copyright (c) 2005, 2012 IBM Corporation, Ericsson |
73005152 BH |
3 | * All rights reserved. This program and the accompanying materials |
4 | * are made available under the terms of the Eclipse Public License v1.0 | |
5 | * which accompanies this distribution, and is available at | |
6 | * http://www.eclipse.org/legal/epl-v10.html | |
abbdd66a AM |
7 | * |
8 | * Contributors: | |
c8422608 AM |
9 | * IBM - Initial API and implementation |
10 | * Bernd Hufmann - Updated for TMF | |
73005152 | 11 | **********************************************************************/ |
c8422608 | 12 | |
73005152 BH |
13 | package org.eclipse.linuxtools.tmf.ui.views.uml2sd.util; |
14 | ||
15 | import java.io.Serializable; | |
16 | import java.util.Comparator; | |
17 | ||
18 | import org.eclipse.linuxtools.tmf.ui.views.uml2sd.core.AsyncMessage; | |
19 | import org.eclipse.linuxtools.tmf.ui.views.uml2sd.core.GraphNode; | |
20 | ||
21 | /** | |
22 | * Asynchronous message comparator Compare two AsyncMessages only taking into account the event occurrence when their | |
23 | * appear.<br> | |
abbdd66a | 24 | * |
73005152 | 25 | * Used to order the AsyncMessage list insuring that next node has one of his ends greater than the current node |
abbdd66a | 26 | * |
df0b8ff4 | 27 | * @version 1.0 |
73005152 | 28 | * @author sveyrier |
abbdd66a | 29 | * |
73005152 BH |
30 | */ |
31 | public class SortAsyncMessageComparator implements Comparator<GraphNode>, Serializable { | |
32 | ||
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33 | // ------------------------------------------------------------------------ |
34 | // Constants | |
35 | // ------------------------------------------------------------------------ | |
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36 | /** |
37 | * Serial version UID | |
38 | */ | |
39 | private static final long serialVersionUID = 1L; | |
40 | ||
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41 | // ------------------------------------------------------------------------ |
42 | // Methods | |
43 | // ------------------------------------------------------------------------ | |
44 | /* | |
45 | * (non-Javadoc) | |
46 | * @see java.util.Comparator#compare(java.lang.Object, java.lang.Object) | |
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47 | */ |
48 | @Override | |
49 | public int compare(GraphNode arg0, GraphNode arg1) { | |
50 | if (arg0 instanceof AsyncMessage && arg1 instanceof AsyncMessage) { | |
51 | AsyncMessage m1 = (AsyncMessage) arg0; | |
52 | AsyncMessage m2 = (AsyncMessage) arg1; | |
53 | int m1Min, m2Min; | |
54 | // AsyncMessage has two ends which may have different event occurrences | |
55 | // Search for the smaller event occurrence for each messages | |
df0b8ff4 | 56 | if (m1.getStartOccurrence() > m1.getEndOccurrence()) { |
73005152 | 57 | m1Min = m1.getEndOccurrence(); |
df0b8ff4 | 58 | } else { |
73005152 | 59 | m1Min = m1.getStartOccurrence(); |
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60 | } |
61 | if (m2.getStartOccurrence() > m2.getEndOccurrence()) { | |
73005152 | 62 | m2Min = m2.getEndOccurrence(); |
df0b8ff4 | 63 | } else { |
73005152 | 64 | m2Min = m2.getStartOccurrence(); |
df0b8ff4 | 65 | } |
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66 | |
67 | int m1Max, m2Max; | |
68 | // Search for the greater event occurrence for each messages | |
df0b8ff4 | 69 | if (m1.getStartOccurrence() > m1.getEndOccurrence()) { |
73005152 | 70 | m1Max = m1.getStartOccurrence(); |
df0b8ff4 | 71 | } else { |
73005152 | 72 | m1Max = m1.getEndOccurrence(); |
df0b8ff4 BH |
73 | } |
74 | if (m2.getStartOccurrence() > m2.getEndOccurrence()) { | |
73005152 | 75 | m2Max = m2.getStartOccurrence(); |
df0b8ff4 | 76 | } else { |
73005152 | 77 | m2Max = m2.getEndOccurrence(); |
df0b8ff4 | 78 | } |
73005152 | 79 | |
df0b8ff4 | 80 | if (m1Min > m2Min) { |
73005152 | 81 | return 1; |
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82 | } else if ((m1Min == m2Min)) { |
83 | if (m1Max == m2Max) { | |
73005152 | 84 | return 0; |
df0b8ff4 | 85 | } else if (m1Max > m2Max) { |
73005152 | 86 | return -1; |
df0b8ff4 | 87 | } else { |
73005152 | 88 | return 1; |
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89 | } |
90 | } else { | |
73005152 | 91 | return -1; |
df0b8ff4 | 92 | } |
df0b8ff4 | 93 | } |
abbdd66a | 94 | return 0; |
73005152 BH |
95 | } |
96 | ||
97 | } |