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032ecd45 MAL |
1 | /******************************************************************************* |
2 | * Copyright (c) 2013 Ericsson | |
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 | * Contributors: | |
10 | * Marc-Andre Laperle - Initial API and implementation | |
11 | *******************************************************************************/ | |
12 | ||
13 | package org.eclipse.linuxtools.tmf.core.trace.indexer; | |
14 | ||
15 | import java.io.File; | |
16 | ||
17 | import org.eclipse.linuxtools.internal.tmf.core.trace.indexer.FlatArray; | |
18 | import org.eclipse.linuxtools.tmf.core.timestamp.TmfTimeRange; | |
19 | import org.eclipse.linuxtools.tmf.core.trace.ITmfTrace; | |
20 | import org.eclipse.linuxtools.tmf.core.trace.TmfTraceManager; | |
21 | import org.eclipse.linuxtools.tmf.core.trace.indexer.checkpoint.ITmfCheckpoint; | |
22 | import org.eclipse.linuxtools.tmf.core.trace.indexer.checkpoint.ITmfCheckpointIndex; | |
23 | ||
24 | /** | |
25 | * <p>A checkpoint index that uses a FlatArray to store and search checkpoints by | |
26 | * time stamps and by checkpoint rank.</p> | |
27 | * | |
28 | * <p>Note: This index alone will not work for | |
29 | * traces that have events with time stamps that are out of order.</p> | |
30 | * | |
31 | * @since 3.0 | |
32 | * @author Marc-Andre Laperle | |
33 | */ | |
34 | public class TmfFlatArrayTraceIndex implements ITmfCheckpointIndex { | |
35 | ||
36 | private final FlatArray fCheckpoints; | |
37 | ||
38 | /** | |
39 | * Creates an index for the given trace | |
40 | * | |
41 | * @param trace the trace | |
42 | */ | |
43 | public TmfFlatArrayTraceIndex(ITmfTrace trace) { | |
44 | fCheckpoints = new FlatArray(getIndexFile(trace, FlatArray.INDEX_FILE_NAME), (ITmfPersistentlyIndexable)trace); | |
45 | } | |
46 | ||
47 | private static File getIndexFile(ITmfTrace trace, String fileName) { | |
48 | String directory = TmfTraceManager.getSupplementaryFileDir(trace); | |
49 | return new File(directory + fileName); | |
50 | } | |
51 | ||
52 | @Override | |
53 | public void dispose() { | |
54 | fCheckpoints.dispose(); | |
55 | } | |
56 | ||
57 | @Override | |
58 | public void insert(ITmfCheckpoint checkpoint) { | |
59 | fCheckpoints.insert(checkpoint); | |
60 | } | |
61 | ||
62 | @Override | |
63 | public ITmfCheckpoint get(long checkpoint) { | |
64 | return fCheckpoints.get(checkpoint); | |
65 | } | |
66 | ||
67 | @Override | |
68 | public long binarySearch(ITmfCheckpoint checkpoint) { | |
69 | return fCheckpoints.binarySearch(checkpoint); | |
70 | } | |
71 | ||
72 | @Override | |
73 | public boolean isEmpty() { | |
74 | return size() == 0; | |
75 | } | |
76 | ||
77 | @Override | |
78 | public int size() { | |
79 | return fCheckpoints.size(); | |
80 | } | |
81 | ||
82 | @Override | |
83 | public boolean isCreatedFromScratch() { | |
84 | return fCheckpoints.isCreatedFromScratch(); | |
85 | } | |
86 | ||
87 | @Override | |
88 | public void setTimeRange(TmfTimeRange timeRange) { | |
89 | fCheckpoints.setTimeRange(timeRange); | |
90 | } | |
91 | ||
92 | @Override | |
93 | public void setNbEvents(long nbEvents) { | |
94 | fCheckpoints.setNbEvents(nbEvents); | |
95 | } | |
96 | ||
97 | @Override | |
98 | public TmfTimeRange getTimeRange() { | |
99 | return fCheckpoints.getTimeRange(); | |
100 | } | |
101 | ||
102 | @Override | |
103 | public long getNbEvents() { | |
104 | return fCheckpoints.getNbEvents(); | |
105 | } | |
106 | ||
107 | @Override | |
108 | public void setIndexComplete() { | |
109 | fCheckpoints.setIndexComplete(); | |
110 | } | |
111 | ||
112 | } |