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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; | |
b9e37ffd | 16 | import java.util.Map; |
d06468c7 | 17 | |
4918b8f2 | 18 | |
d06468c7 | 19 | /** |
d06468c7 | 20 | * The TmfEventTypeManager acts as a central repository for the available |
4c564a2d | 21 | * event types. Types are managed in their context space. |
b9e37ffd FC |
22 | * |
23 | * @since 1.0 | |
24 | * @version 1.0 | |
25 | * @author Francois Chouinard | |
26 | * @see ITmfEventType | |
d06468c7 FC |
27 | */ |
28 | public final class TmfEventTypeManager { | |
29 | ||
30 | // ------------------------------------------------------------------------ | |
31 | // Attributes | |
32 | // ------------------------------------------------------------------------ | |
33 | ||
34 | // The event type manager singleton | |
35 | private static TmfEventTypeManager fEventTypeManager = null; | |
36 | ||
37 | // The available types, per context | |
b9e37ffd | 38 | private final Map<String, HashMap<String, ITmfEventType>> fEventTypes; |
d06468c7 FC |
39 | |
40 | // ------------------------------------------------------------------------ | |
41 | // Constructors | |
42 | // ------------------------------------------------------------------------ | |
43 | ||
d7dbf09a FC |
44 | /** |
45 | * The singleton constructor | |
46 | */ | |
d06468c7 FC |
47 | private TmfEventTypeManager() { |
48 | fEventTypes = new HashMap<String, HashMap<String, ITmfEventType>>(); | |
49 | } | |
50 | ||
d7dbf09a FC |
51 | /** |
52 | * @return the TmfEventTypeManager singleton | |
53 | */ | |
d06468c7 | 54 | public static synchronized TmfEventTypeManager getInstance() { |
b9e37ffd | 55 | if (fEventTypeManager == null) { |
d06468c7 | 56 | fEventTypeManager = new TmfEventTypeManager(); |
b9e37ffd | 57 | } |
d06468c7 FC |
58 | return fEventTypeManager; |
59 | } | |
60 | ||
61 | // ------------------------------------------------------------------------ | |
62 | // Operations | |
63 | // ------------------------------------------------------------------------ | |
64 | ||
65 | /** | |
66 | * Add a context:type pair to the available types | |
67 | * | |
68 | * @param context the target context | |
69 | * @param type the type to add | |
70 | */ | |
085d898f | 71 | public synchronized void add(final String context, final ITmfEventType type) { |
d06468c7 | 72 | HashMap<String, ITmfEventType> types = fEventTypes.get(context); |
b9e37ffd | 73 | if (types == null) { |
d06468c7 | 74 | types = new HashMap<String, ITmfEventType>(); |
b9e37ffd | 75 | } |
4c564a2d | 76 | types.put(type.getName(), type); |
d06468c7 FC |
77 | fEventTypes.put(context, types); |
78 | } | |
79 | ||
80 | /** | |
81 | * Return the list of currently defined contexts | |
82 | * | |
83 | * @return the list of contexts | |
84 | */ | |
85 | public synchronized String[] getContexts() { | |
86 | return fEventTypes.keySet().toArray(new String[fEventTypes.size()]); | |
87 | } | |
88 | ||
89 | /** | |
90 | * Return the list of types defined for a given context | |
91 | * | |
92 | * @param context the context to look into | |
93 | * @return the list of types defined for that context | |
94 | */ | |
085d898f FC |
95 | public synchronized ITmfEventType[] getTypes(final String context) { |
96 | final HashMap<String, ITmfEventType> types = fEventTypes.get(context); | |
b9e37ffd | 97 | if (types != null) { |
d06468c7 | 98 | return types.values().toArray(new ITmfEventType[types.size()]); |
b9e37ffd | 99 | } |
d06468c7 FC |
100 | return null; |
101 | } | |
102 | ||
103 | /** | |
104 | * Return an event type | |
105 | * | |
106 | * @param context the context to look into | |
107 | * @param typeId the type ID | |
108 | * @return the corresponding type | |
109 | */ | |
085d898f FC |
110 | public synchronized ITmfEventType getType(final String context, final String typeId) { |
111 | final HashMap<String, ITmfEventType> types = fEventTypes.get(context); | |
b9e37ffd | 112 | if (types != null) { |
d06468c7 | 113 | return types.get(typeId); |
b9e37ffd | 114 | } |
d06468c7 FC |
115 | return null; |
116 | } | |
117 | ||
118 | /** | |
119 | * Remove the types associated to a context | |
120 | * | |
121 | * @param context the context to remove | |
122 | */ | |
085d898f | 123 | public synchronized void clear(final String context) { |
d06468c7 FC |
124 | fEventTypes.remove(context); |
125 | } | |
126 | ||
127 | /** | |
128 | * Remove all contexts and types | |
129 | */ | |
130 | public synchronized void clear() { | |
131 | fEventTypes.clear(); | |
132 | } | |
133 | ||
134 | // ------------------------------------------------------------------------ | |
135 | // Object | |
136 | // ------------------------------------------------------------------------ | |
137 | ||
d7dbf09a FC |
138 | /* (non-Javadoc) |
139 | * @see java.lang.Object#toString() | |
140 | */ | |
d06468c7 FC |
141 | @Override |
142 | @SuppressWarnings("nls") | |
143 | public String toString() { | |
144 | return "TmfEventTypeManager [fEventTypes=" + fEventTypes + "]"; | |
145 | } | |
146 | ||
147 | } |