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

   1 /*******************************************************************************
   2  * Copyright (c) 2012, 2014 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.tracecompass.statesystem.core.interval;
  14
  15 import org.eclipse.tracecompass.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  */
  24 public final class TmfStateInterval implements ITmfStateInterval {
  25
  26     private final long start;
  27     private final long end;
  28     private final int attribute;
  29     private final ITmfStateValue sv;
  30
  31     /**
  32      * Construct an interval from its given parameters
  33      *
  34      * @param start
  35      *            Start time
  36      * @param end
  37      *            End time
  38      * @param attribute
  39      *            Attribute linked to this interval
  40      * @param sv
  41      *            State value this interval will contain
  42      */
  43     public TmfStateInterval(long start, long end, int attribute,
  44             ITmfStateValue sv) {
  45         this.start = start;
  46         this.end = end;
  47         this.attribute = attribute;
  48         this.sv = sv;
  49     }
  50
  51     @Override
  52     public long getStartTime() {
  53         return start;
  54     }
  55
  56     @Override
  57     public long getEndTime() {
  58         return end;
  59     }
  60
  61     @Override
  62     public int getAttribute() {
  63         return attribute;
  64     }
  65
  66     @Override
  67     public ITmfStateValue getStateValue() {
  68         return sv;
  69     }
  70
  71     @Override
  72     public boolean intersects(long timestamp) {
  73         if (start <= timestamp) {
  74             if (end >= timestamp) {
  75                 return true;
  76             }
  77         }
  78         return false;
  79     }
  80
  81     @Override
  82     public String toString() {
  83         /* Only used for debugging */
  84         StringBuffer buf = new StringBuffer(start + " to "); //$NON-NLS-1$
  85         buf.append(end + ", "); //$NON-NLS-1$
  86         buf.append(String.format("key = %4d, ", attribute)); //$NON-NLS-1$
  87         buf.append("value = " + sv.toString()); //$NON-NLS-1$
  88         return buf.toString();
  89     }
  90
  91 }