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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.request; | |
14 | ||
15 | import org.eclipse.linuxtools.tmf.core.event.ITmfEvent; | |
16 | import org.eclipse.linuxtools.tmf.core.filter.ITmfFilter; | |
17 | ||
18 | /** | |
19 | * An event filter base on the requested data type. | |
20 | * | |
21 | * @author Francois Chouinard | |
22 | * @version 1.0 | |
23 | * @since 2.0 | |
24 | */ | |
25 | public final class TmfEventTypeFilter implements ITmfFilter { | |
26 | ||
27 | // ------------------------------------------------------------------------ | |
28 | // Constants | |
29 | // ------------------------------------------------------------------------ | |
30 | ||
31 | /** | |
32 | * Filter for all types of events | |
33 | */ | |
34 | public static final TmfEventTypeFilter ALL_EVENTS = new TmfEventTypeFilter(ITmfEvent.class); | |
35 | ||
36 | // ------------------------------------------------------------------------ | |
37 | // Attributes | |
38 | // ------------------------------------------------------------------------ | |
39 | ||
40 | /** | |
41 | * Event type | |
42 | */ | |
43 | private final Class<? extends ITmfEvent> fEventType; | |
44 | ||
45 | // ------------------------------------------------------------------------ | |
46 | // Constructors | |
47 | // ------------------------------------------------------------------------ | |
48 | ||
49 | /** | |
50 | * Standard constructor | |
51 | * | |
52 | * @param eventType the event type | |
53 | */ | |
54 | public TmfEventTypeFilter(Class<? extends ITmfEvent> eventType) { | |
55 | fEventType = eventType != null ? eventType : ITmfEvent.class; | |
56 | } | |
57 | ||
58 | /** | |
59 | * Copy constructor | |
60 | * | |
61 | * @param other the other filter | |
62 | */ | |
63 | public TmfEventTypeFilter(TmfEventTypeFilter other) { | |
64 | fEventType = other.fEventType; | |
65 | } | |
66 | ||
67 | // ------------------------------------------------------------------------ | |
68 | // Getters | |
69 | // ------------------------------------------------------------------------ | |
70 | ||
71 | /** | |
72 | * @return the event type | |
73 | */ | |
74 | public Class<? extends ITmfEvent> getEventType() { | |
75 | return fEventType; | |
76 | } | |
77 | ||
78 | // ------------------------------------------------------------------------ | |
79 | // ITmfFilter | |
80 | // ------------------------------------------------------------------------ | |
81 | ||
82 | /* (non-Javadoc) | |
83 | * @see org.eclipse.linuxtools.tmf.core.filter.ITmfFilter#matches(org.eclipse.linuxtools.tmf.core.event.ITmfEvent) | |
84 | */ | |
85 | @Override | |
86 | public boolean matches(ITmfEvent event) { | |
87 | return fEventType.isInstance(event); | |
88 | } | |
89 | ||
90 | // ------------------------------------------------------------------------ | |
91 | // Object | |
92 | // ------------------------------------------------------------------------ | |
93 | ||
94 | /* (non-Javadoc) | |
95 | * @see java.lang.Object#hashCode() | |
96 | */ | |
97 | @Override | |
98 | public int hashCode() { | |
99 | final int prime = 31; | |
100 | int result = 1; | |
101 | result = prime * result + ((fEventType == null) ? 0 : fEventType.hashCode()); | |
102 | return result; | |
103 | } | |
104 | ||
105 | /* (non-Javadoc) | |
106 | * @see java.lang.Object#equals(java.lang.Object) | |
107 | */ | |
108 | @Override | |
109 | public boolean equals(Object obj) { | |
110 | if (this == obj) { | |
111 | return true; | |
112 | } | |
113 | if (obj == null) { | |
114 | return false; | |
115 | } | |
116 | if (!(obj instanceof TmfEventTypeFilter)) { | |
117 | return false; | |
118 | } | |
119 | TmfEventTypeFilter other = (TmfEventTypeFilter) obj; | |
120 | if (fEventType == null) { | |
121 | if (other.fEventType != null) { | |
122 | return false; | |
123 | } | |
124 | } else if (!fEventType.equals(other.fEventType)) { | |
125 | return false; | |
126 | } | |
127 | return true; | |
128 | } | |
129 | ||
130 | /* (non-Javadoc) | |
131 | * @see java.lang.Object#toString() | |
132 | */ | |
133 | @Override | |
134 | @SuppressWarnings("nls") | |
135 | public String toString() { | |
136 | return "TmfEventTypeFilter [fEventType=" + fEventType.getSimpleName() + "]"; | |
137 | } | |
138 | ||
139 | } |