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 import com.google.common.base.Objects;
  18
  19 /**
  20  * The StateInterval represents the "state" a particular attribute was in, at a
  21  * given time. It is the main object being returned from queries to the state
  22  * system.
  23  *
  24  * @author Alexandre Montplaisir
  25  */
  26 public final class TmfStateInterval implements ITmfStateInterval {
  27
  28     private final long start;
  29     private final long end;
  30     private final int attribute;
  31     private final ITmfStateValue sv;
  32
  33     /**
  34      * Construct an interval from its given parameters
  35      *
  36      * @param start
  37      *            Start time
  38      * @param end
  39      *            End time
  40      * @param attribute
  41      *            Attribute linked to this interval
  42      * @param sv
  43      *            State value this interval will contain
  44      */
  45     public TmfStateInterval(long start, long end, int attribute,
  46             ITmfStateValue sv) {
  47         this.start = start;
  48         this.end = end;
  49         this.attribute = attribute;
  50         this.sv = sv;
  51     }
  52
  53     @Override
  54     public long getStartTime() {
  55         return start;
  56     }
  57
  58     @Override
  59     public long getEndTime() {
  60         return end;
  61     }
  62
  63     @Override
  64     public int getAttribute() {
  65         return attribute;
  66     }
  67
  68     @Override
  69     public ITmfStateValue getStateValue() {
  70         return sv;
  71     }
  72
  73     @Override
  74     public boolean intersects(long timestamp) {
  75         if (start <= timestamp) {
  76             if (end >= timestamp) {
  77                 return true;
  78             }
  79         }
  80         return false;
  81     }
  82
  83     @Override
  84     public String toString() {
  85         /* Only used for debugging */
  86         return Objects.toStringHelper(this)
  87             .add("start", start) //$NON-NLS-1$
  88             .add("end", end) //$NON-NLS-1$
  89             .add("key", attribute) //$NON-NLS-1$
  90             .add("value", sv.toString()) //$NON-NLS-1$
  91             .toString();
  92     }
  93
  94 }