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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 | ||
15 | import java.util.HashMap; | |
16 | ||
4918b8f2 | 17 | |
d06468c7 FC |
18 | /** |
19 | * <b><u>TmfEventTypeManager</u></b> | |
20 | * <p> | |
21 | * The TmfEventTypeManager acts as a central repository for the available | |
4c564a2d | 22 | * event types. Types are managed in their context space. |
d06468c7 FC |
23 | * <p> |
24 | */ | |
25 | public final class TmfEventTypeManager { | |
26 | ||
27 | // ------------------------------------------------------------------------ | |
28 | // Attributes | |
29 | // ------------------------------------------------------------------------ | |
30 | ||
31 | // The event type manager singleton | |
32 | private static TmfEventTypeManager fEventTypeManager = null; | |
33 | ||
34 | // The available types, per context | |
085d898f | 35 | private final HashMap<String, HashMap<String, ITmfEventType>> fEventTypes; |
d06468c7 FC |
36 | |
37 | // ------------------------------------------------------------------------ | |
38 | // Constructors | |
39 | // ------------------------------------------------------------------------ | |
40 | ||
d7dbf09a FC |
41 | /** |
42 | * The singleton constructor | |
43 | */ | |
d06468c7 FC |
44 | private TmfEventTypeManager() { |
45 | fEventTypes = new HashMap<String, HashMap<String, ITmfEventType>>(); | |
46 | } | |
47 | ||
d7dbf09a FC |
48 | /** |
49 | * @return the TmfEventTypeManager singleton | |
50 | */ | |
d06468c7 | 51 | public static synchronized TmfEventTypeManager getInstance() { |
085d898f | 52 | if (fEventTypeManager == null) |
d06468c7 | 53 | fEventTypeManager = new TmfEventTypeManager(); |
d06468c7 FC |
54 | return fEventTypeManager; |
55 | } | |
56 | ||
57 | // ------------------------------------------------------------------------ | |
58 | // Operations | |
59 | // ------------------------------------------------------------------------ | |
60 | ||
61 | /** | |
62 | * Add a context:type pair to the available types | |
63 | * | |
64 | * @param context the target context | |
65 | * @param type the type to add | |
66 | */ | |
085d898f | 67 | public synchronized void add(final String context, final ITmfEventType type) { |
d06468c7 | 68 | HashMap<String, ITmfEventType> types = fEventTypes.get(context); |
085d898f | 69 | if (types == null) |
d06468c7 | 70 | types = new HashMap<String, ITmfEventType>(); |
4c564a2d | 71 | types.put(type.getName(), type); |
d06468c7 FC |
72 | fEventTypes.put(context, types); |
73 | } | |
74 | ||
75 | /** | |
76 | * Return the list of currently defined contexts | |
77 | * | |
78 | * @return the list of contexts | |
79 | */ | |
80 | public synchronized String[] getContexts() { | |
81 | return fEventTypes.keySet().toArray(new String[fEventTypes.size()]); | |
82 | } | |
83 | ||
84 | /** | |
85 | * Return the list of types defined for a given context | |
86 | * | |
87 | * @param context the context to look into | |
88 | * @return the list of types defined for that context | |
89 | */ | |
085d898f FC |
90 | public synchronized ITmfEventType[] getTypes(final String context) { |
91 | final HashMap<String, ITmfEventType> types = fEventTypes.get(context); | |
92 | if (types != null) | |
d06468c7 | 93 | return types.values().toArray(new ITmfEventType[types.size()]); |
d06468c7 FC |
94 | return null; |
95 | } | |
96 | ||
97 | /** | |
98 | * Return an event type | |
99 | * | |
100 | * @param context the context to look into | |
101 | * @param typeId the type ID | |
102 | * @return the corresponding type | |
103 | */ | |
085d898f FC |
104 | public synchronized ITmfEventType getType(final String context, final String typeId) { |
105 | final HashMap<String, ITmfEventType> types = fEventTypes.get(context); | |
106 | if (types != null) | |
d06468c7 | 107 | return types.get(typeId); |
d06468c7 FC |
108 | return null; |
109 | } | |
110 | ||
111 | /** | |
112 | * Remove the types associated to a context | |
113 | * | |
114 | * @param context the context to remove | |
115 | */ | |
085d898f | 116 | public synchronized void clear(final String context) { |
d06468c7 FC |
117 | fEventTypes.remove(context); |
118 | } | |
119 | ||
120 | /** | |
121 | * Remove all contexts and types | |
122 | */ | |
123 | public synchronized void clear() { | |
124 | fEventTypes.clear(); | |
125 | } | |
126 | ||
127 | // ------------------------------------------------------------------------ | |
128 | // Object | |
129 | // ------------------------------------------------------------------------ | |
130 | ||
d7dbf09a FC |
131 | /* (non-Javadoc) |
132 | * @see java.lang.Object#toString() | |
133 | */ | |
d06468c7 FC |
134 | @Override |
135 | @SuppressWarnings("nls") | |
136 | public String toString() { | |
137 | return "TmfEventTypeManager [fEventTypes=" + fEventTypes + "]"; | |
138 | } | |
139 | ||
140 | } |