Commit | Line | Data |
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8c8bf09f | 1 | /******************************************************************************* |
ed902a2b | 2 | * Copyright (c) 2009, 2014 Ericsson |
4593bd5b | 3 | * |
bbc1c411 | 4 | * All rights reserved. This program and the accompanying materials are made |
5 | * available under the terms of the Eclipse Public License v1.0 which | |
8c8bf09f ASL |
6 | * accompanies this distribution, and is available at |
7 | * http://www.eclipse.org/legal/epl-v10.html | |
4593bd5b | 8 | * |
8c8bf09f ASL |
9 | * Contributors: |
10 | * Francois Chouinard - Initial API and implementation | |
bbc1c411 | 11 | * Francois Chouinard - Updated as per TMF Event Model 1.0 |
8c8bf09f ASL |
12 | *******************************************************************************/ |
13 | ||
2bdf0193 | 14 | package org.eclipse.tracecompass.tmf.core.timestamp; |
8c8bf09f | 15 | |
5f490d2f | 16 | import org.eclipse.jdt.annotation.NonNull; |
6cfc180e GB |
17 | import org.eclipse.jdt.annotation.NonNullByDefault; |
18 | import org.eclipse.jdt.annotation.Nullable; | |
5f490d2f | 19 | |
8c8bf09f | 20 | /** |
4c564a2d | 21 | * A utility class to define and manage time ranges. |
4593bd5b | 22 | * |
b9e37ffd | 23 | * @author Francois Chouinard |
4593bd5b | 24 | * |
b9e37ffd | 25 | * @see ITmfTimestamp |
8c8bf09f | 26 | */ |
6cfc180e | 27 | @NonNullByDefault |
56e3f319 | 28 | public class TmfTimeRange { |
8c8bf09f | 29 | |
bbc1c411 | 30 | // ------------------------------------------------------------------------ |
62d1696a | 31 | // Constants |
bbc1c411 | 32 | // ------------------------------------------------------------------------ |
62d1696a | 33 | |
d7dbf09a FC |
34 | /** |
35 | * The full possible time range | |
36 | */ | |
6cfc180e | 37 | public static final TmfTimeRange ETERNITY = new EternityTimeRange(); |
bbc1c411 | 38 | |
d7dbf09a FC |
39 | /** |
40 | * The null time range | |
41 | */ | |
6cfc180e | 42 | public static final TmfTimeRange NULL_RANGE = new TmfTimeRange(); |
bbc1c411 | 43 | |
44 | // ------------------------------------------------------------------------ | |
8c8bf09f | 45 | // Attributes |
bbc1c411 | 46 | // ------------------------------------------------------------------------ |
8c8bf09f | 47 | |
4593bd5b AM |
48 | private final ITmfTimestamp fStartTime; |
49 | private final ITmfTimestamp fEndTime; | |
8c8bf09f | 50 | |
bbc1c411 | 51 | // ------------------------------------------------------------------------ |
8c8bf09f | 52 | // Constructors |
bbc1c411 | 53 | // ------------------------------------------------------------------------ |
54 | ||
55 | /** | |
56 | * Default constructor | |
57 | */ | |
bbc1c411 | 58 | private TmfTimeRange() { |
4593bd5b AM |
59 | fStartTime = TmfTimestamp.BIG_BANG; |
60 | fEndTime = TmfTimestamp.BIG_BANG; | |
bbc1c411 | 61 | } |
62 | ||
63 | /** | |
64 | * Full constructor | |
4593bd5b | 65 | * |
bbc1c411 | 66 | * @param startTime start of the time range |
67 | * @param endTime end of the time range | |
68 | */ | |
085d898f | 69 | public TmfTimeRange(final ITmfTimestamp startTime, final ITmfTimestamp endTime) { |
d7dbf09a FC |
70 | fStartTime = startTime; |
71 | fEndTime = endTime; | |
bbc1c411 | 72 | } |
73 | ||
74 | /** | |
75 | * Copy constructor | |
4593bd5b | 76 | * |
bbc1c411 | 77 | * @param range the other time range |
78 | */ | |
085d898f | 79 | public TmfTimeRange(final TmfTimeRange range) { |
d7dbf09a FC |
80 | fStartTime = range.getStartTime(); |
81 | fEndTime = range.getEndTime(); | |
bbc1c411 | 82 | } |
83 | ||
84 | // ------------------------------------------------------------------------ | |
4c564a2d | 85 | // Getters |
bbc1c411 | 86 | // ------------------------------------------------------------------------ |
87 | ||
88 | /** | |
89 | * @return the time range start time | |
90 | */ | |
91 | public ITmfTimestamp getStartTime() { | |
92 | return fStartTime; | |
93 | } | |
94 | ||
95 | /** | |
96 | * @return the time range end time | |
97 | */ | |
98 | public ITmfTimestamp getEndTime() { | |
99 | return fEndTime; | |
100 | } | |
101 | ||
102 | // ------------------------------------------------------------------------ | |
8c8bf09f | 103 | // Predicates |
bbc1c411 | 104 | // ------------------------------------------------------------------------ |
105 | ||
106 | /** | |
107 | * Check if the timestamp is within the time range | |
4593bd5b | 108 | * |
2d17cf16 AM |
109 | * @param ts |
110 | * The timestamp to check | |
111 | * @return True if [startTime] <= [ts] <= [endTime] | |
bbc1c411 | 112 | */ |
085d898f | 113 | public boolean contains(final ITmfTimestamp ts) { |
065cc19b | 114 | return (fStartTime.compareTo(ts) <= 0) && (fEndTime.compareTo(ts) >= 0); |
bbc1c411 | 115 | } |
116 | ||
117 | /** | |
118 | * Check if the time range is within the time range | |
4593bd5b | 119 | * |
2d17cf16 AM |
120 | * @param range |
121 | * The other time range | |
122 | * @return True if [range] is fully contained | |
bbc1c411 | 123 | */ |
085d898f FC |
124 | public boolean contains(final TmfTimeRange range) { |
125 | final ITmfTimestamp startTime = range.getStartTime(); | |
126 | final ITmfTimestamp endTime = range.getEndTime(); | |
065cc19b | 127 | return (fStartTime.compareTo(startTime) <= 0) && (fEndTime.compareTo(endTime) >= 0); |
bbc1c411 | 128 | } |
129 | ||
130 | // ------------------------------------------------------------------------ | |
131 | // Operations | |
132 | // ------------------------------------------------------------------------ | |
133 | ||
134 | /** | |
135 | * Get intersection of two time ranges | |
4593bd5b | 136 | * |
bbc1c411 | 137 | * @param range the other time range |
138 | * @return the intersection time range, or null if no intersection exists | |
139 | */ | |
6cfc180e | 140 | public @Nullable TmfTimeRange getIntersection(final TmfTimeRange range) { |
065cc19b | 141 | if (fStartTime.compareTo(range.fEndTime) > 0 || fEndTime.compareTo(range.fStartTime) < 0) { |
bbc1c411 | 142 | return null; // no intersection |
b9e37ffd | 143 | } |
bbc1c411 | 144 | |
065cc19b | 145 | return new TmfTimeRange(fStartTime.compareTo(range.fStartTime) < 0 |
4593bd5b | 146 | ? range.fStartTime |
065cc19b | 147 | : fStartTime, fEndTime.compareTo(range.fEndTime) > 0 |
4593bd5b | 148 | ? range.fEndTime |
bbc1c411 | 149 | : fEndTime); |
150 | } | |
151 | ||
bbc1c411 | 152 | // ------------------------------------------------------------------------ |
cbd4ad82 | 153 | // Object |
bbc1c411 | 154 | // ------------------------------------------------------------------------ |
cbd4ad82 | 155 | |
bbc1c411 | 156 | @Override |
cbd4ad82 | 157 | public int hashCode() { |
bbc1c411 | 158 | final int prime = 31; |
159 | int result = 1; | |
34480e89 FC |
160 | result = prime * result + fEndTime.hashCode(); |
161 | result = prime * result + fStartTime.hashCode(); | |
cbd4ad82 FC |
162 | return result; |
163 | } | |
164 | ||
bbc1c411 | 165 | @Override |
6cfc180e | 166 | public boolean equals(final @Nullable Object obj) { |
b9e37ffd | 167 | if (this == obj) { |
bbc1c411 | 168 | return true; |
b9e37ffd FC |
169 | } |
170 | if (obj == null) { | |
bbc1c411 | 171 | return false; |
b9e37ffd FC |
172 | } |
173 | if (!(obj instanceof TmfTimeRange)) { | |
bbc1c411 | 174 | return false; |
b9e37ffd | 175 | } |
085d898f | 176 | final TmfTimeRange other = (TmfTimeRange) obj; |
b9e37ffd | 177 | if (!fEndTime.equals(other.fEndTime)) { |
bbc1c411 | 178 | return false; |
b9e37ffd FC |
179 | } |
180 | if (!fStartTime.equals(other.fStartTime)) { | |
bbc1c411 | 181 | return false; |
b9e37ffd | 182 | } |
bbc1c411 | 183 | return true; |
cbd4ad82 FC |
184 | } |
185 | ||
bbc1c411 | 186 | @Override |
3b38ea61 | 187 | @SuppressWarnings("nls") |
bbc1c411 | 188 | public String toString() { |
619d7d7f | 189 | return "TmfTimeRange [fStartTime=" + fStartTime + ", fEndTime=" + fEndTime + "]"; |
bbc1c411 | 190 | } |
8d2e2848 | 191 | |
56e3f319 AM |
192 | // ------------------------------------------------------------------------ |
193 | // Inner classes | |
194 | // ------------------------------------------------------------------------ | |
195 | ||
196 | /** | |
197 | * "Eternity" time range, representing the largest time range possible, | |
198 | * which includes any other time range or timestamp. | |
199 | */ | |
200 | private static final class EternityTimeRange extends TmfTimeRange { | |
201 | ||
202 | public EternityTimeRange() { | |
203 | super(TmfTimestamp.BIG_BANG, TmfTimestamp.BIG_CRUNCH); | |
204 | } | |
205 | ||
206 | @Override | |
207 | public boolean contains(ITmfTimestamp ts) { | |
208 | return true; | |
209 | } | |
210 | ||
211 | @Override | |
212 | public boolean contains(TmfTimeRange range) { | |
213 | return true; | |
214 | } | |
215 | ||
216 | @Override | |
6cfc180e | 217 | public @NonNull TmfTimeRange getIntersection(TmfTimeRange range) { |
56e3f319 AM |
218 | return range; |
219 | } | |
220 | } | |
8c8bf09f | 221 | } |