org.eclipse.tracecompass.statesystem.core/src/org/eclipse/linuxtools/statesystem/core/interval/TmfStateInterval.java

   1 /*******************************************************************************
   2  * Copyright (c) 2012, 2013 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.statesystem.core.interval;
  14
  15 import org.eclipse.linuxtools.statesystem.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  * @author Alexandre Montplaisir
  23  * @since 3.0
  24  */
  25 public final class TmfStateInterval implements ITmfStateInterval {
  26
  27     private final long start;
  28     private final long end;
  29     private final int attribute;
  30     private final ITmfStateValue sv;
  31
  32     /**
  33      * Construct an interval from its given parameters
  34      *
  35      * @param start
  36      *            Start time
  37      * @param end
  38      *            End time
  39      * @param attribute
  40      *            Attribute linked to this interval
  41      * @param sv
  42      *            State value this interval will contain
  43      */
  44     public TmfStateInterval(long start, long end, int attribute,
  45             ITmfStateValue sv) {
  46         this.start = start;
  47         this.end = end;
  48         this.attribute = attribute;
  49         this.sv = sv;
  50     }
  51
  52     @Override
  53     public long getStartTime() {
  54         return start;
  55     }
  56
  57     @Override
  58     public long getEndTime() {
  59         return end;
  60     }
  61
  62     @Override
  63     public long getViewerEndTime() {
  64         return end + 1;
  65     }
  66
  67     @Override
  68     public int getAttribute() {
  69         return attribute;
  70     }
  71
  72     @Override
  73     public ITmfStateValue getStateValue() {
  74         return sv;
  75     }
  76
  77     @Override
  78     public boolean intersects(long timestamp) {
  79         if (start <= timestamp) {
  80             if (end >= timestamp) {
  81                 return true;
  82             }
  83         }
  84         return false;
  85     }
  86
  87     @Override
  88     public String toString() {
  89         /* Only used for debugging */
  90         StringBuffer buf = new StringBuffer(start + " to "); //$NON-NLS-1$
  91         buf.append(end + ", "); //$NON-NLS-1$
  92         buf.append(String.format("key = %4d, ", attribute)); //$NON-NLS-1$
  93         buf.append("value = " + sv.toString()); //$NON-NLS-1$
  94         return buf.toString();
  95     }
  96
  97 }