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

   1 /*******************************************************************************
   2  * Copyright (c) 2012, 2013 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.timestamp;
  15
  16 /**
  17  * A simplified timestamp where scale and precision are set to 0.
  18  *
  19  * @author Francois Chouinard
  20  * @version 1.1
  21  * @since 2.0
  22  */
  23 public class TmfSimpleTimestamp extends TmfTimestamp {
  24
  25     // ------------------------------------------------------------------------
  26     // Constructors
  27     // ------------------------------------------------------------------------
  28
  29     /**
  30      * Default constructor (value = 0)
  31      */
  32     public TmfSimpleTimestamp() {
  33         this(0);
  34     }
  35
  36     /**
  37      * Full constructor
  38      *
  39      * @param value the timestamp value
  40      */
  41     public TmfSimpleTimestamp(final long value) {
  42         super(value, 0, 0);
  43     }
  44
  45     /**
  46      * Copy constructor.
  47      *
  48      * If the parameter is not a TmfSimpleTimestamp, the timestamp will be
  49      * scaled to seconds, and the precision will be discarded.
  50      *
  51      * @param timestamp
  52      *            The timestamp to copy
  53      */
  54     public TmfSimpleTimestamp(final ITmfTimestamp timestamp) {
  55         super(timestamp.normalize(0, ITmfTimestamp.SECOND_SCALE).getValue(), 0, 0);
  56     }
  57
  58     // ------------------------------------------------------------------------
  59     // ITmfTimestamp
  60     // ------------------------------------------------------------------------
  61
  62     @Override
  63     public ITmfTimestamp normalize(final long offset, final int scale) {
  64         if (scale == 0) {
  65             return new TmfSimpleTimestamp(getValue() + offset);
  66         }
  67         return super.normalize(offset, scale);
  68     }
  69
  70     @Override
  71     public int compareTo(final ITmfTimestamp ts, final boolean withinPrecision) {
  72         if (ts instanceof TmfSimpleTimestamp) {
  73             final long delta = getValue() - ts.getValue();
  74             return (delta == 0) ? 0 : (delta > 0) ? 1 : -1;
  75         }
  76         return super.compareTo(ts, withinPrecision);
  77     }
  78
  79     @Override
  80     public ITmfTimestamp getDelta(final ITmfTimestamp ts) {
  81         if (ts instanceof TmfSimpleTimestamp) {
  82             return new TmfTimestampDelta(getValue() - ts.getValue());
  83         }
  84         return super.getDelta(ts);
  85     }
  86
  87     // ------------------------------------------------------------------------
  88     // Object
  89     // ------------------------------------------------------------------------
  90
  91     @Override
  92     public int hashCode() {
  93         return super.hashCode();
  94     }
  95
  96     @Override
  97     public boolean equals(final Object other) {
  98         if (this == other) {
  99             return true;
 100         }
 101         if (other == null) {
 102             return false;
 103         }
 104         if (!(other instanceof TmfSimpleTimestamp)) {
 105             return super.equals(other);
 106         }
 107         final TmfSimpleTimestamp ts = (TmfSimpleTimestamp) other;
 108
 109         return compareTo(ts, false) == 0;
 110     }
 111
 112 }