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  *   Francois Chouinard - Standardize on the default toString()
  12  *******************************************************************************/
  13
  14 package org.eclipse.linuxtools.tmf.core.event;
  15
  16 /**
  17  * A simplified timestamp where scale and precision are set to 0.
  18  *
  19  * @version 1.1
  20  * @author Francois Chouinard
  21  */
  22 public class TmfSimpleTimestamp extends TmfTimestamp {
  23
  24     // ------------------------------------------------------------------------
  25     // Constructors
  26     // ------------------------------------------------------------------------
  27
  28     /**
  29      * Default constructor (value = 0)
  30      */
  31     public TmfSimpleTimestamp() {
  32         this(0);
  33     }
  34
  35     /**
  36      * Full constructor
  37      *
  38      * @param value the timestamp value
  39      */
  40     public TmfSimpleTimestamp(final long value) {
  41         super(value, 0, 0);
  42     }
  43
  44     /**
  45      * Copy constructor.
  46      *
  47      * If the parameter is not a TmfSimpleTimestamp, the timestamp will be
  48      * scaled to seconds, and the precision will be discarded.
  49      *
  50      * @param timestamp
  51      *            The timestamp to copy
  52      */
  53     public TmfSimpleTimestamp(final ITmfTimestamp timestamp) {
  54         super(timestamp.normalize(0, ITmfTimestamp.SECOND_SCALE).getValue(), 0, 0);
  55     }
  56
  57     // ------------------------------------------------------------------------
  58     // ITmfTimestamp
  59     // ------------------------------------------------------------------------
  60
  61     /* (non-Javadoc)
  62      * @see org.eclipse.linuxtools.tmf.core.event.TmfTimestamp#normalize(long, int)
  63      */
  64     @Override
  65     public ITmfTimestamp normalize(final long offset, final int scale) {
  66         if (scale == 0) {
  67             return new TmfSimpleTimestamp(getValue() + offset);
  68         }
  69         return super.normalize(offset, scale);
  70     }
  71
  72     /* (non-Javadoc)
  73      * @see org.eclipse.linuxtools.tmf.core.event.TmfTimestamp#compareTo(org.eclipse.linuxtools.tmf.core.event.ITmfTimestamp, boolean)
  74      */
  75     @Override
  76     public int compareTo(final ITmfTimestamp ts, final boolean withinPrecision) {
  77         if (ts instanceof TmfSimpleTimestamp) {
  78             final long delta = getValue() - ts.getValue();
  79             return (delta == 0) ? 0 : (delta > 0) ? 1 : -1;
  80         }
  81         return super.compareTo(ts, withinPrecision);
  82     }
  83
  84     /* (non-Javadoc)
  85      * @see org.eclipse.linuxtools.tmf.core.event.TmfTimestamp#getDelta(org.eclipse.linuxtools.tmf.core.event.ITmfTimestamp)
  86      */
  87     @Override
  88     public ITmfTimestamp getDelta(final ITmfTimestamp ts) {
  89         if (ts instanceof TmfSimpleTimestamp) {
  90             return new TmfTimestampDelta(getValue() - ts.getValue());
  91         }
  92         return super.getDelta(ts);
  93     }
  94
  95     // ------------------------------------------------------------------------
  96     // Object
  97     // ------------------------------------------------------------------------
  98
  99     /* (non-Javadoc)
 100      * @see org.eclipse.linuxtools.tmf.core.event.TmfTimestamp#hashCode()
 101      */
 102     @Override
 103     public int hashCode() {
 104         return super.hashCode();
 105     }
 106
 107     /* (non-Javadoc)
 108      * @see org.eclipse.linuxtools.tmf.core.event.TmfTimestamp#equals(java.lang.Object)
 109      */
 110     @Override
 111     public boolean equals(final Object other) {
 112         if (this == other) {
 113             return true;
 114         }
 115         if (other == null) {
 116             return false;
 117         }
 118         if (!(other instanceof TmfSimpleTimestamp)) {
 119             return super.equals(other);
 120         }
 121         final TmfSimpleTimestamp ts = (TmfSimpleTimestamp) other;
 122
 123         return compareTo(ts, false) == 0;
 124     }
 125
 126 }