org.eclipse.linuxtools.tmf.core/src/org/eclipse/linuxtools/tmf/core/event/TmfSimpleTimestamp.java

   1 /*******************************************************************************
   2  * Copyright (c) 2012 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.core.event;
  14
  15 /**
  16  * <b><u>TmfSimpleTimestamp</u></b>
  17  * <p>
  18  * A simplified timestamp where scale and precision are set to 0.
  19  */
  20 public class TmfSimpleTimestamp extends TmfTimestamp {
  21
  22     // ------------------------------------------------------------------------
  23     // Constructors
  24     // ------------------------------------------------------------------------
  25
  26     /**
  27      * Default constructor
  28      */
  29     public TmfSimpleTimestamp() {
  30         this(0);
  31     }
  32
  33     /**
  34      * Full constructor
  35      *
  36      * @param value the timestamp value
  37      */
  38     public TmfSimpleTimestamp(long value) {
  39         super(value, 0, 0);
  40     }
  41
  42     /**
  43      * Copy constructor
  44      *
  45      * @param timestamp the timestamp to copy
  46      */
  47     public TmfSimpleTimestamp(TmfSimpleTimestamp timestamp) {
  48         if (timestamp == null || timestamp.getScale() != 0 || timestamp.getPrecision() != 0)
  49             throw new IllegalArgumentException();
  50         fValue = timestamp.getValue();
  51         fScale = 0;
  52         fPrecision = 0;
  53     }
  54
  55     // ------------------------------------------------------------------------
  56     // ITmfTimestamp
  57     // ------------------------------------------------------------------------
  58
  59     @Override
  60     public ITmfTimestamp normalize(long offset, int scale) throws ArithmeticException {
  61         if (scale == 0) {
  62             return new TmfSimpleTimestamp(fValue + offset);
  63         }
  64         return super.normalize(offset, scale);
  65     }
  66
  67     @Override
  68     public int compareTo(ITmfTimestamp ts, boolean withinPrecision) {
  69         if (ts instanceof TmfSimpleTimestamp) {
  70             long delta = fValue - ts.getValue();
  71             return (delta == 0) ? 0 : (delta > 0) ? 1 : -1;
  72         }
  73         return super.compareTo(ts, withinPrecision);
  74     }
  75
  76     @Override
  77     public ITmfTimestamp getDelta(ITmfTimestamp ts) {
  78         if (ts instanceof TmfSimpleTimestamp) {
  79             return new TmfSimpleTimestamp(fValue - ts.getValue());
  80         }
  81         return super.getDelta(ts);
  82     }
  83
  84     // ------------------------------------------------------------------------
  85     // Object
  86     // ------------------------------------------------------------------------
  87
  88     @Override
  89     public boolean equals(Object other) {
  90         if (this == other)
  91             return true;
  92         if (other == null)
  93             return false;
  94         if (!(other instanceof TmfSimpleTimestamp))
  95             return super.equals(other);
  96         TmfSimpleTimestamp ts = (TmfSimpleTimestamp) other;
  97         return compareTo(ts, false) == 0;
  98     }
  99
 100     @Override
 101     @SuppressWarnings("nls")
 102     public String toString() {
 103         return "TmfSimpleTimestamp [fValue=" + fValue + "]";
 104     }
 105
 106 }