org.eclipse.tracecompass.tmf.ui/src/org/eclipse/tracecompass/tmf/ui/views/uml2sd/util/SortSyncMessageComparator.java

   1 /**********************************************************************
   2  * Copyright (c) 2005, 2014 IBM Corporation, Ericsson
   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
   7  *
   8  * Contributors:
   9  *     IBM - Initial API and implementation
  10  *     Bernd Hufmann - Updated for TMF
  11  **********************************************************************/
  12
  13 package org.eclipse.tracecompass.tmf.ui.views.uml2sd.util;
  14
  15 import java.io.Serializable;
  16 import java.util.Comparator;
  17
  18 import org.eclipse.tracecompass.tmf.ui.views.uml2sd.core.GraphNode;
  19 import org.eclipse.tracecompass.tmf.ui.views.uml2sd.core.SyncMessage;
  20
  21 /**
  22  * Synchronous message comparator Compare two syncMessages only taking into account the event occurrence when their
  23  * appear.<br>
  24  *
  25  * The message with the greater event occurrence is considered to be the greater.<br>
  26  *
  27  * @version 1.0
  28  * @author sveyrier
  29  *
  30  */
  31 public class SortSyncMessageComparator implements Comparator<GraphNode>, Serializable {
  32
  33     // ------------------------------------------------------------------------
  34     // Constants
  35     // ------------------------------------------------------------------------
  36
  37     /**
  38      * Serial version UID
  39      */
  40     private static final long serialVersionUID = 4781250984753283718L;
  41
  42     // ------------------------------------------------------------------------
  43     // Methods
  44     // ------------------------------------------------------------------------
  45
  46     @Override
  47     public int compare(GraphNode arg0, GraphNode arg1) {
  48         if (arg0 instanceof SyncMessage && arg1 instanceof SyncMessage) {
  49             SyncMessage m1 = (SyncMessage) arg0;
  50             SyncMessage m2 = (SyncMessage) arg1;
  51             if (m1.getEventOccurrence() > m2.getEventOccurrence()) {
  52                 return 1;
  53             } else if (m1.getEventOccurrence() == m2.getEventOccurrence()) {
  54                 return 0;
  55             } else {
  56                 return -1;
  57             }
  58         }
  59         return 0;
  60     }
  61 }