statesystem/org.eclipse.tracecompass.segmentstore.core/src/org/eclipse/tracecompass/segmentstore/core/SegmentComparators.java

   1 /*******************************************************************************
   2  * Copyright (c) 2015 EfficiOS Inc., Alexandre Montplaisir
   3  *
   4  * All rights reserved. This program and the accompanying materials are
   5  * made available under the terms of the Eclipse Public License v1.0 which
   6  * accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *******************************************************************************/
   9
  10 package org.eclipse.tracecompass.segmentstore.core;
  11
  12 import java.util.Comparator;
  13
  14 import org.eclipse.jdt.annotation.Nullable;
  15
  16 /**
  17  * Segments comparators. These do not allow for null arguments.
  18  *
  19  * @author Alexandre Montplaisir
  20  * @noimplement This interface only contains static definitions.
  21  */
  22 public interface SegmentComparators {
  23
  24     /**
  25      * Basic long comparator
  26      */
  27     Comparator<Long> LONG_COMPARATOR = new Comparator<Long>() {
  28         @Override
  29         public int compare(@Nullable Long o1, @Nullable Long o2) {
  30             if (o1 == null || o2 == null) {
  31                 throw new IllegalArgumentException();
  32             }
  33             return o1.compareTo(o2);
  34         }
  35     };
  36
  37     /**
  38      * Start time comparator
  39      */
  40     Comparator<ISegment> INTERVAL_START_COMPARATOR = new Comparator<ISegment>() {
  41         @Override
  42         public int compare(@Nullable ISegment o1, @Nullable ISegment o2) {
  43             if (o1 == null || o2 == null) {
  44                 throw new IllegalArgumentException();
  45             }
  46             return Long.compare(o1.getStart(), o2.getStart());
  47         }
  48     };
  49
  50     /**
  51      * End time comparator
  52      */
  53     Comparator<ISegment> INTERVAL_END_COMPARATOR = new Comparator<ISegment>() {
  54         @Override
  55         public int compare(@Nullable ISegment o1, @Nullable ISegment o2) {
  56             if (o1 == null || o2 == null) {
  57                 throw new IllegalArgumentException();
  58             }
  59             return Long.compare(o1.getEnd(), o2.getEnd());
  60         }
  61     };
  62
  63     /**
  64      * Length comparator
  65      */
  66     Comparator<ISegment> INTERVAL_LENGTH_COMPARATOR = new Comparator<ISegment>() {
  67         @Override
  68         public int compare(@Nullable ISegment o1, @Nullable ISegment o2) {
  69             if (o1 == null || o2 == null) {
  70                 throw new IllegalArgumentException();
  71             }
  72             return Long.compare(o1.getLength(), o2.getLength());
  73         }
  74     };
  75
  76 }