org.eclipse.linuxtools.tmf.core/src/org/eclipse/linuxtools/tmf/core/timestamp/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.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     /* (non-Javadoc)
  63      * @see org.eclipse.linuxtools.tmf.core.event.TmfTimestamp#normalize(long, int)
  64      */
  65     @Override
  66     public ITmfTimestamp normalize(final long offset, final int scale) {
  67         if (scale == 0) {
  68             return new TmfSimpleTimestamp(getValue() + offset);
  69         }
  70         return super.normalize(offset, scale);
  71     }
  72
  73     /* (non-Javadoc)
  74      * @see org.eclipse.linuxtools.tmf.core.event.TmfTimestamp#compareTo(org.eclipse.linuxtools.tmf.core.event.ITmfTimestamp, boolean)
  75      */
  76     @Override
  77     public int compareTo(final ITmfTimestamp ts, final boolean withinPrecision) {
  78         if (ts instanceof TmfSimpleTimestamp) {
  79             final long delta = getValue() - ts.getValue();
  80             return (delta == 0) ? 0 : (delta > 0) ? 1 : -1;
  81         }
  82         return super.compareTo(ts, withinPrecision);
  83     }
  84
  85     /* (non-Javadoc)
  86      * @see org.eclipse.linuxtools.tmf.core.event.TmfTimestamp#getDelta(org.eclipse.linuxtools.tmf.core.event.ITmfTimestamp)
  87      */
  88     @Override
  89     public ITmfTimestamp getDelta(final ITmfTimestamp ts) {
  90         if (ts instanceof TmfSimpleTimestamp) {
  91             return new TmfTimestampDelta(getValue() - ts.getValue());
  92         }
  93         return super.getDelta(ts);
  94     }
  95
  96     // ------------------------------------------------------------------------
  97     // Object
  98     // ------------------------------------------------------------------------
  99
 100     /* (non-Javadoc)
 101      * @see org.eclipse.linuxtools.tmf.core.event.TmfTimestamp#hashCode()
 102      */
 103     @Override
 104     public int hashCode() {
 105         return super.hashCode();
 106     }
 107
 108     /* (non-Javadoc)
 109      * @see org.eclipse.linuxtools.tmf.core.event.TmfTimestamp#equals(java.lang.Object)
 110      */
 111     @Override
 112     public boolean equals(final Object other) {
 113         if (this == other) {
 114             return true;
 115         }
 116         if (other == null) {
 117             return false;
 118         }
 119         if (!(other instanceof TmfSimpleTimestamp)) {
 120             return super.equals(other);
 121         }
 122         final TmfSimpleTimestamp ts = (TmfSimpleTimestamp) other;
 123
 124         return compareTo(ts, false) == 0;
 125     }
 126
 127 }