tmf/org.eclipse.tracecompass.tmf.core/src/org/eclipse/tracecompass/tmf/core/timestamp/TmfSimpleTimestamp.java

   1 /*******************************************************************************
   2  * Copyright (c) 2012, 2014 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.tracecompass.tmf.core.timestamp;
  15
  16 /**
  17  * A simplified timestamp where scale and precision are set to 0.
  18  *
  19  * @author Francois Chouinard
  20  */
  21 public class TmfSimpleTimestamp extends TmfTimestamp {
  22
  23     // ------------------------------------------------------------------------
  24     // Constructors
  25     // ------------------------------------------------------------------------
  26
  27     /**
  28      * Default constructor (value = 0)
  29      */
  30     public TmfSimpleTimestamp() {
  31         this(0);
  32     }
  33
  34     /**
  35      * Full constructor
  36      *
  37      * @param value the timestamp value
  38      */
  39     public TmfSimpleTimestamp(final long value) {
  40         super(value, 0);
  41     }
  42
  43     /**
  44      * Copy constructor.
  45      *
  46      * If the parameter is not a TmfSimpleTimestamp, the timestamp will be
  47      * scaled to seconds, and the precision will be discarded.
  48      *
  49      * @param timestamp
  50      *            The timestamp to copy
  51      */
  52     public TmfSimpleTimestamp(final ITmfTimestamp timestamp) {
  53         super(timestamp.normalize(0, ITmfTimestamp.SECOND_SCALE).getValue(), 0);
  54     }
  55
  56     // ------------------------------------------------------------------------
  57     // ITmfTimestamp
  58     // ------------------------------------------------------------------------
  59
  60     @Override
  61     public ITmfTimestamp normalize(final long offset, final int scale) {
  62         if (scale == 0) {
  63             return new TmfSimpleTimestamp(getValue() + offset);
  64         }
  65         return super.normalize(offset, scale);
  66     }
  67
  68     @Override
  69     public int compareTo(final ITmfTimestamp ts) {
  70         if (ts instanceof TmfSimpleTimestamp) {
  71             final long delta = getValue() - ts.getValue();
  72             return (delta == 0) ? 0 : (delta > 0) ? 1 : -1;
  73         }
  74         return super.compareTo(ts);
  75     }
  76
  77     @Override
  78     public ITmfTimestamp getDelta(final ITmfTimestamp ts) {
  79         if (ts instanceof TmfSimpleTimestamp) {
  80             return new TmfTimestampDelta(getValue() - ts.getValue());
  81         }
  82         return super.getDelta(ts);
  83     }
  84
  85     // ------------------------------------------------------------------------
  86     // Object
  87     // ------------------------------------------------------------------------
  88
  89     @Override
  90     public int hashCode() {
  91         return super.hashCode();
  92     }
  93
  94     @Override
  95     public boolean equals(final Object other) {
  96         if (this == other) {
  97             return true;
  98         }
  99         if (other == null) {
 100             return false;
 101         }
 102         if (!(other instanceof TmfSimpleTimestamp)) {
 103             return super.equals(other);
 104         }
 105         final TmfSimpleTimestamp ts = (TmfSimpleTimestamp) other;
 106
 107         return compareTo(ts) == 0;
 108     }
 109
 110 }