org.eclipse.linuxtools.tmf/src/org/eclipse/linuxtools/tmf/event/TmfEventReference.java

   1 /*******************************************************************************
   2  * Copyright (c) 2009 Ericsson
   3  *
   4  * All rights reserved. This program and the accompanying materials are
   5  * made available under the terms of the Eclipse Public License v1.0 which
   6  * accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *   Francois Chouinard - Initial API and implementation
  11  *******************************************************************************/
  12
  13 package org.eclipse.linuxtools.tmf.event;
  14
  15 /**
  16  * <b><u>TmfEventReference</u></b>
  17  * <p>
  18  * An application-defined event reference.
  19  */
  20 public class TmfEventReference implements Cloneable {
  21
  22     // ------------------------------------------------------------------------
  23     // Attributes
  24     // ------------------------------------------------------------------------
  25
  26         protected Object fReference;
  27
  28     // ------------------------------------------------------------------------
  29     // Constructors
  30     // ------------------------------------------------------------------------
  31
  32         /**
  33          * The default constructor
  34          */
  35         public TmfEventReference() {
  36                 fReference = null;
  37         }
  38
  39         /**
  40          * @param reference the event reference
  41          */
  42         public TmfEventReference(Object reference) {
  43                 fReference = reference;
  44         }
  45
  46         /**
  47          * Copy constructor
  48          * @param other the original event reference
  49          */
  50         public TmfEventReference(TmfEventReference other) {
  51         if (other == null)
  52                 throw new IllegalArgumentException();
  53         TmfEventReference o = (TmfEventReference) other;
  54         fReference = o.fReference;
  55         }
  56
  57     // ------------------------------------------------------------------------
  58     // Accessors
  59     // ------------------------------------------------------------------------
  60
  61         /**
  62          * @return the event reference
  63          */
  64         public Object getReference() {
  65                 return fReference;
  66         }
  67
  68     // ------------------------------------------------------------------------
  69     // Object
  70     // ------------------------------------------------------------------------
  71
  72         @Override
  73     public int hashCode() {
  74         return (fReference != null) ? fReference.hashCode() : 0;
  75     }
  76
  77         @Override
  78     public String toString() {
  79         return "[TmfEventReference(" + ((fReference != null) ? fReference.toString() : "null") + ")]";
  80     }
  81
  82         @Override
  83     public boolean equals(Object other) {
  84                 if (!(other instanceof TmfEventReference))
  85                         return false;
  86                 TmfEventReference o = (TmfEventReference) other;
  87         return fReference.equals(o.fReference);
  88     }
  89
  90         @Override
  91         public TmfEventReference clone() {
  92                 TmfEventReference clone = null;
  93                 try {
  94                         clone = (TmfEventReference) super.clone();
  95                         clone.fReference = null;
  96                 }
  97                 catch (CloneNotSupportedException e) {
  98                         e.printStackTrace();
  99                 }
 100                 return clone;
 101         }
 102 }