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1 | /******************************************************************************* |
2 | * Copyright (c) 2012 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 | * Francois Chouinard - Initial API and implementation | |
11 | *******************************************************************************/ | |
12 | ||
13 | package org.eclipse.linuxtools.tmf.core.event; | |
14 | ||
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15 | import org.eclipse.linuxtools.tmf.core.trace.ITmfTrace; |
16 | ||
5179fc01 | 17 | /** |
3118edf1 | 18 | * The basic event structure in TMF. In its canonical form, a data item has: |
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19 | * <ul> |
20 | * <li> a parent trace | |
21 | * <li> a rank (order within the trace) | |
22 | * <li> a timestamp | |
23 | * <li> a source (reporting component) | |
24 | * <li> a type | |
25 | * <li> a content (payload) | |
26 | * </ul> | |
27 | * For convenience, a free-form reference field is also provided. It could be | |
28 | * used as e.g. a location marker (filename:lineno) to indicate where the event | |
29 | * was generated. | |
d337369a | 30 | * |
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31 | * @since 1.0 |
32 | * @version 1.0 | |
33 | * @author Francois Chouinard | |
34 | * | |
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35 | * @see ITmfTimestamp |
36 | * @see ITmfEventType | |
37 | * @see ITmfEvetnField | |
38 | * @see TmfEvent | |
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39 | */ |
40 | public interface ITmfEvent extends Cloneable { | |
41 | ||
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42 | // ------------------------------------------------------------------------ |
43 | // Constants | |
44 | // ------------------------------------------------------------------------ | |
45 | ||
4c564a2d | 46 | /** |
085d898f | 47 | * Pre-defined event attributes |
4c564a2d | 48 | */ |
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49 | public static final String EVENT_FIELD_TIMESTAMP = ":timestamp:"; //$NON-NLS-1$ |
50 | public static final String EVENT_FIELD_SOURCE = ":source:"; //$NON-NLS-1$ | |
51 | public static final String EVENT_FIELD_TYPE = ":type:"; //$NON-NLS-1$ | |
52 | public static final String EVENT_FIELD_CONTENT = ":content:"; //$NON-NLS-1$ | |
53 | public static final String EVENT_FIELD_REFERENCE = ":reference:"; //$NON-NLS-1$ | |
54 | ||
55 | // ------------------------------------------------------------------------ | |
56 | // Getters | |
57 | // ------------------------------------------------------------------------ | |
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58 | |
59 | /** | |
60 | * @return the trace that 'owns' the event | |
61 | */ | |
62 | public ITmfTrace<?> getTrace(); | |
63 | ||
64 | /** | |
65 | * @return the event rank within the parent trace | |
66 | */ | |
67 | public long getRank(); | |
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68 | |
69 | /** | |
70 | * @return the event timestamp | |
71 | */ | |
72 | public ITmfTimestamp getTimestamp(); | |
73 | ||
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74 | /** |
75 | * @return the event source | |
76 | */ | |
77 | public String getSource(); | |
78 | ||
79 | /** | |
80 | * @return the event type | |
81 | */ | |
82 | public ITmfEventType getType(); | |
83 | ||
84 | /** | |
85 | * @return the event content | |
86 | */ | |
87 | public ITmfEventField getContent(); | |
88 | ||
89 | /** | |
90 | * @return the event reference | |
91 | */ | |
92 | public String getReference(); | |
93 | ||
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94 | // ------------------------------------------------------------------------ |
95 | // Cloneable | |
96 | // ------------------------------------------------------------------------ | |
97 | ||
4c564a2d | 98 | /** |
3ef62bac | 99 | * @return a clone of the event |
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100 | */ |
101 | public ITmfEvent clone(); | |
085d898f | 102 | |
5179fc01 | 103 | } |