org.eclipse.linuxtools.tmf.core/src/org/eclipse/linuxtools/tmf/core/interval/TmfStateInterval.java

   1 /*******************************************************************************
   2  * Copyright (c) 2012 Ericsson
   3  * Copyright (c) 2010, 2011 École Polytechnique de Montréal
   4  * Copyright (c) 2010, 2011 Alexandre Montplaisir <alexandre.montplaisir@gmail.com>
   5  *
   6  * All rights reserved. This program and the accompanying materials are
   7  * made available under the terms of the Eclipse Public License v1.0 which
   8  * accompanies this distribution, and is available at
   9  * http://www.eclipse.org/legal/epl-v10.html
  10  *
  11  *******************************************************************************/
  12
  13 package org.eclipse.linuxtools.tmf.core.interval;
  14
  15 import org.eclipse.linuxtools.tmf.core.statevalue.ITmfStateValue;
  16
  17 /**
  18  * The StateInterval represents the "state" a particular attribute was in, at a
  19  * given time. It is the main object being returned from queries to the state
  20  * system.
  21  *
  22
  23  *
  24  * @author alexmont
  25  *
  26  */
  27 public final class TmfStateInterval implements ITmfStateInterval {
  28
  29     private final long start;
  30     private final long end;
  31     private final int attribute;
  32     private final ITmfStateValue sv;
  33
  34     /**
  35      * Construct an interval from its given parameters
  36      *
  37      * @param start
  38      *            Start time
  39      * @param end
  40      *            End time
  41      * @param attribute
  42      *            Attribute linked to this interval
  43      * @param sv
  44      *            State value this interval will contain
  45      */
  46     public TmfStateInterval(long start, long end, int attribute,
  47             ITmfStateValue sv) {
  48         this.start = start;
  49         this.end = end;
  50         this.attribute = attribute;
  51         this.sv = sv;
  52     }
  53
  54     @Override
  55     public long getStartTime() {
  56         return start;
  57     }
  58
  59     @Override
  60     public long getEndTime() {
  61         return end;
  62     }
  63
  64     @Override
  65     public long getViewerEndTime() {
  66         return end + 1;
  67     }
  68
  69     @Override
  70     public int getAttribute() {
  71         return attribute;
  72     }
  73
  74     @Override
  75     public ITmfStateValue getStateValue() {
  76         return sv;
  77     }
  78
  79     @Override
  80     public boolean intersects(long timestamp) {
  81         if (start <= timestamp) {
  82             if (end >= timestamp) {
  83                 return true;
  84             }
  85         }
  86         return false;
  87     }
  88
  89     @Override
  90     public String toString() {
  91         /* Only used for debugging */
  92         StringBuffer buf = new StringBuffer(start + " to "); //$NON-NLS-1$
  93         buf.append(end + ' ');
  94         buf.append(String.format("key = %4d, ", attribute)); //$NON-NLS-1$
  95         buf.append("value = " + sv.toString()); //$NON-NLS-1$
  96         return buf.toString();
  97     }
  98
  99 }