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1 | /******************************************************************************* |
2 | * Copyright (c) 2015 École Polytechnique de Montréal | |
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.internal.lttng2.kernel.core.analysis.graph.model; | |
11 | ||
12 | import org.eclipse.tracecompass.common.core.NonNullUtils; | |
13 | import org.eclipse.tracecompass.tmf.core.event.ITmfEvent; | |
14 | import org.eclipse.tracecompass.tmf.core.event.ITmfEventField; | |
15 | ||
16 | /** | |
17 | * Type casting for getting field values | |
18 | * | |
19 | * @author Francis Giraldeau | |
20 | * @author Geneviève Bastien | |
21 | */ | |
22 | public class EventField { | |
23 | ||
24 | /** | |
25 | * Get int field | |
26 | * | |
27 | * @param event | |
28 | * the event | |
29 | * @param name | |
30 | * the field name | |
31 | * @return the long value | |
32 | */ | |
33 | public static Integer getInt(ITmfEvent event, String name) { | |
34 | ITmfEventField field = NonNullUtils.checkNotNull(event.getContent().getField(name)); | |
35 | Object value = field.getValue(); | |
36 | if (value instanceof Long) { | |
37 | return NonNullUtils.checkNotNull(((Long) value).intValue()); | |
38 | } | |
39 | return NonNullUtils.checkNotNull((Integer) value); | |
40 | } | |
41 | ||
42 | /** | |
43 | * Get long field | |
44 | * | |
45 | * @param event | |
46 | * the event | |
47 | * @param name | |
48 | * the field name | |
49 | * @return the long value | |
50 | */ | |
51 | public static Long getLong(ITmfEvent event, String name) { | |
52 | ITmfEventField field = NonNullUtils.checkNotNull(event.getContent().getField(name)); | |
53 | return NonNullUtils.checkNotNull((Long) field.getValue()); | |
54 | } | |
55 | ||
56 | /** | |
57 | * Get string field | |
58 | * | |
59 | * @param event | |
60 | * the event | |
61 | * @param name | |
62 | * the field name | |
63 | * @return the string value | |
64 | */ | |
65 | public static String getString(ITmfEvent event, String name) { | |
66 | ITmfEventField field = NonNullUtils.checkNotNull(event.getContent().getField(name)); | |
67 | return NonNullUtils.checkNotNull((String) field.getValue()); | |
68 | } | |
69 | ||
70 | /** | |
71 | * Get float field | |
72 | * | |
73 | * @param event | |
74 | * the event | |
75 | * @param name | |
76 | * the field name | |
77 | * @return the float value | |
78 | */ | |
79 | public static double getFloat(ITmfEvent event, String name) { | |
80 | ITmfEventField field = NonNullUtils.checkNotNull(event.getContent().getField(name)); | |
81 | return NonNullUtils.checkNotNull((Double) field.getValue()); | |
82 | } | |
83 | ||
84 | /** | |
85 | * Get string field with default value | |
86 | * | |
87 | * @param event | |
88 | * the event | |
89 | * @param name | |
90 | * the field name | |
91 | * @param def | |
92 | * the default value to return if the field does not exists | |
93 | * @return the long value | |
94 | */ | |
95 | public static String getOrDefault(ITmfEvent event, String name, String def) { | |
96 | ITmfEventField field = event.getContent().getField(name); | |
97 | if (field == null) { | |
98 | return def; | |
99 | } | |
100 | return NonNullUtils.checkNotNull((String) field.getValue()); | |
101 | } | |
102 | } |