blob: 4fcde5f8693cce205fd057816f7d681edc39b7e3 (
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
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
|
/*
* Copyright (c) 2004 - 2012 Eike Stepper (Berlin, Germany) 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:
* Eike Stepper - initial API and implementation
*/
package org.eclipse.emf.internal.cdo.view;
import org.eclipse.emf.cdo.view.CDOView;
import org.eclipse.emf.cdo.view.CDOViewRegistry;
import org.eclipse.emf.cdo.view.CDOViewRegistry.Registration;
import org.eclipse.net4j.util.container.Container;
import java.util.HashMap;
import java.util.Map;
/**
* @author Eike Stepper
* @since 4.2
* @see CDOView
*/
public class CDOViewRegistryImpl extends Container<Registration> implements CDOViewRegistry
{
public static final CDOViewRegistryImpl INSTANCE = new CDOViewRegistryImpl();
private final Map<Integer, Registration> ids = new HashMap<Integer, Registration>();
private final Map<CDOView, Registration> views = new HashMap<CDOView, Registration>();
private int lastID;
public CDOViewRegistryImpl()
{
}
public synchronized Registration[] getElements()
{
return ids.values().toArray(new Registration[ids.size()]);
}
public synchronized int[] getIDs()
{
int[] result = new int[ids.size()];
int i = 0;
for (Integer id : ids.keySet())
{
result[i++] = id;
}
return result;
}
public synchronized CDOView[] getViews()
{
return views.keySet().toArray(new CDOView[views.size()]);
}
public synchronized int getID(CDOView view)
{
Registration registration = views.get(view);
if (registration != null)
{
return registration.getID();
}
return NOT_REGISTERED;
}
public synchronized CDOView getView(int id)
{
Registration registration = ids.get(id);
if (registration != null)
{
return registration.getView();
}
return null;
}
void register(CDOView view)
{
Registration registration;
synchronized (this)
{
if (views.containsKey(view))
{
return;
}
int id = ++lastID;
registration = new RegistrationImpl(id, view);
ids.put(id, registration);
views.put(view, registration);
}
fireElementAddedEvent(registration);
}
void deregister(CDOView view)
{
Registration registration;
synchronized (this)
{
registration = views.remove(view);
if (registration != null)
{
int id = registration.getID();
ids.remove(id);
}
}
fireElementRemovedEvent(registration);
}
/**
* @author Eike Stepper
*/
private static final class RegistrationImpl implements Registration
{
private final int id;
private final CDOView view;
public RegistrationImpl(int id, CDOView view)
{
this.id = id;
this.view = view;
}
public int getID()
{
return id;
}
public CDOView getView()
{
return view;
}
}
}
|