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

   1 /**********************************************************************
   2  * Copyright (c) 2005, 2006 IBM Corporation and others.
   3  * Copyright (c) 2011, 2012 Ericsson.
   4  *
   5  * All rights reserved.   This program and the accompanying materials
   6  * are made available under the terms of the Eclipse Public License v1.0
   7  * which accompanies this distribution, and is available at
   8  * http://www.eclipse.org/legal/epl-v10.html
   9  *
  10  * Contributors:
  11  * IBM - Initial API and implementation
  12  * Bernd Hufmann - Updated for TMF
  13  **********************************************************************/
  14 package org.eclipse.linuxtools.tmf.ui.views.uml2sd.util;
  15
  16 import java.io.Serializable;
  17 import java.util.Comparator;
  18
  19 import org.eclipse.linuxtools.tmf.ui.views.uml2sd.core.GraphNode;
  20 import org.eclipse.linuxtools.tmf.ui.views.uml2sd.core.SyncMessage;
  21
  22 /**
  23  * Synchronous message comparator Compare two syncMessages only taking into account the event occurrence when their
  24  * appear.<br>
  25  *
  26  * The message with the greater event occurrence is considered to be the greater.<br>
  27  *
  28  * @author sveyrier
  29  *
  30  */
  31 public class SortSyncMessageComparator implements Comparator<GraphNode>, Serializable {
  32
  33     // ------------------------------------------------------------------------
  34     // Constants
  35     // ------------------------------------------------------------------------
  36     /**
  37      * Serial version UID
  38      */
  39     private static final long serialVersionUID = 4781250984753283718L;
  40
  41     // ------------------------------------------------------------------------
  42     // Methods
  43     // ------------------------------------------------------------------------
  44     /*
  45      * (non-Javadoc)
  46      * @see java.util.Comparator#compare(java.lang.Object, java.lang.Object)
  47      */
  48     @Override
  49     public int compare(GraphNode arg0, GraphNode arg1) {
  50         if (arg0 instanceof SyncMessage && arg1 instanceof SyncMessage) {
  51             SyncMessage m1 = (SyncMessage) arg0;
  52             SyncMessage m2 = (SyncMessage) arg1;
  53             if (m1.getEventOccurrence() > m2.getEventOccurrence()) {
  54                 return 1;
  55             } else if (m1.getEventOccurrence() == m2.getEventOccurrence()) {
  56                 return 0;
  57             } else {
  58                 return -1;
  59             }
  60         } else {
  61             return 0;
  62         }
  63     }
  64 }