blob: b01abf667517f59fad209502a609b5fa3dbe0e65 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
|
/*******************************************************************************
* Copyright (c) 2000, 2017 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.team.internal.core;
import java.util.HashMap;
import java.util.Map;
import org.eclipse.core.runtime.*;
import org.eclipse.team.core.ICache;
import org.eclipse.team.core.ICacheListener;
/**
* A synchronize operation context that supports caching of
* properties relevant to the operation and the registering of
* dispose listeners.
*
* @see org.eclipse.team.core.ICache
* @since 3.2
*/
public class Cache implements ICache {
Map<String, Object> properties;
ListenerList<ICacheListener> listeners;
@Override
public synchronized void put(String name, Object value) {
if (properties == null) {
properties = new HashMap<>();
}
properties.put(name, value);
}
@Override
public synchronized Object get(String name) {
if (properties == null)
return null;
return properties.get(name);
}
@Override
public synchronized void remove(String name) {
if (properties != null)
properties.remove(name);
if (properties.isEmpty()) {
properties = null;
}
}
@Override
public synchronized void addCacheListener(ICacheListener listener) {
if (listeners == null)
listeners = new ListenerList<>(ListenerList.IDENTITY);
listeners.add(listener);
}
@Override
public synchronized void removeDisposeListener(ICacheListener listener) {
removeCacheListener(listener);
}
@Override
public synchronized void removeCacheListener(ICacheListener listener) {
if (listeners != null)
listeners.remove(listener);
}
public void dispose() {
if (listeners != null) {
for (ICacheListener listener : listeners) {
SafeRunner.run(new ISafeRunnable(){
@Override
public void run() throws Exception {
listener.cacheDisposed(Cache.this);
}
@Override
public void handleException(Throwable exception) {
// Ignore since the platform logs the error
}
});
}
}
properties = null;
}
}
|
