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.jdt.annotation.NonNull;
  16 import org.eclipse.tracecompass.statesystem.core.statevalue.ITmfStateValue;
  17
  18 import com.google.common.base.Objects;
  19
  20 /**
  21  * The StateInterval represents the "state" a particular attribute was in, at a
  22  * given time. It is the main object being returned from queries to the state
  23  * system.
  24  *
  25  * @author Alexandre Montplaisir
  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 @NonNull 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             @NonNull 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 int getAttribute() {
  66         return attribute;
  67     }
  68
  69     @Override
  70     public ITmfStateValue getStateValue() {
  71         return sv;
  72     }
  73
  74     @Override
  75     public boolean intersects(long timestamp) {
  76         if (start <= timestamp) {
  77             if (end >= timestamp) {
  78                 return true;
  79             }
  80         }
  81         return false;
  82     }
  83
  84     @Override
  85     public String toString() {
  86         /* Only used for debugging */
  87         return Objects.toStringHelper(this)
  88             .add("start", start) //$NON-NLS-1$
  89             .add("end", end) //$NON-NLS-1$
  90             .add("key", attribute) //$NON-NLS-1$
  91             .add("value", sv.toString()) //$NON-NLS-1$
  92             .toString();
  93     }
  94
  95 }