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
148
149
150
151
152
153
154
155
156
157
158
159
160
|
/*******************************************************************************
* Copyright (c) 2010-2014, Bergmann Gabor, Istvan Rath and Daniel Varro
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0 which is available at
* http://www.eclipse.org/legal/epl-v20.html.
*
* SPDX-License-Identifier: EPL-2.0
*******************************************************************************/
package tools.refinery.viatra.runtime.emf;
import java.lang.reflect.InvocationTargetException;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.Callable;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EStructuralFeature;
import tools.refinery.viatra.runtime.api.scope.IBaseIndex;
import tools.refinery.viatra.runtime.api.scope.IIndexingErrorListener;
import tools.refinery.viatra.runtime.api.scope.IInstanceObserver;
import tools.refinery.viatra.runtime.api.scope.ViatraBaseIndexChangeListener;
import tools.refinery.viatra.runtime.base.api.EMFBaseIndexChangeListener;
import tools.refinery.viatra.runtime.base.api.IEMFIndexingErrorListener;
import tools.refinery.viatra.runtime.base.api.LightweightEObjectObserver;
import tools.refinery.viatra.runtime.base.api.NavigationHelper;
/**
* Wraps the EMF base index into the IBaseIndex interface.
* @author Bergmann Gabor
*
*/
public class EMFBaseIndexWrapper implements IBaseIndex {
private final NavigationHelper navigationHelper;
/**
* @return the underlying index object
*/
public NavigationHelper getNavigationHelper() {
return navigationHelper;
}
/**
* @param navigationHelper
*/
public EMFBaseIndexWrapper(NavigationHelper navigationHelper) {
this.navigationHelper = navigationHelper;
}
@Override
public void resampleDerivedFeatures() {
navigationHelper.resampleDerivedFeatures();
}
@Override
public <V> V coalesceTraversals(Callable<V> callable) throws InvocationTargetException {
return navigationHelper.coalesceTraversals(callable);
}
Map<IIndexingErrorListener, IEMFIndexingErrorListener> indexErrorListeners =
new HashMap<IIndexingErrorListener, IEMFIndexingErrorListener>();
@Override
public boolean addIndexingErrorListener(final IIndexingErrorListener listener) {
if (indexErrorListeners.containsKey(listener)) return false;
IEMFIndexingErrorListener emfListener = new IEMFIndexingErrorListener() {
@Override
public void fatal(String description, Throwable t) {
listener.fatal(description, t);
}
@Override
public void error(String description, Throwable t) {
listener.error(description, t);
}
};
indexErrorListeners.put(listener, emfListener);
return navigationHelper.addIndexingErrorListener(emfListener);
}
@Override
public boolean removeIndexingErrorListener(IIndexingErrorListener listener) {
if (!indexErrorListeners.containsKey(listener)) return false;
return navigationHelper.removeIndexingErrorListener(indexErrorListeners.remove(listener));
}
Map<ViatraBaseIndexChangeListener, EMFBaseIndexChangeListener> indexChangeListeners =
new HashMap<ViatraBaseIndexChangeListener, EMFBaseIndexChangeListener>();
@Override
public void addBaseIndexChangeListener(final ViatraBaseIndexChangeListener listener) {
EMFBaseIndexChangeListener emfListener = new EMFBaseIndexChangeListener() {
@Override
public boolean onlyOnIndexChange() {
return listener.onlyOnIndexChange();
}
@Override
public void notifyChanged(boolean indexChanged) {
listener.notifyChanged(indexChanged);
}
};
indexChangeListeners.put(listener, emfListener);
navigationHelper.addBaseIndexChangeListener(emfListener);
}
@Override
public void removeBaseIndexChangeListener(ViatraBaseIndexChangeListener listener) {
final EMFBaseIndexChangeListener cListener = indexChangeListeners.remove(listener);
if (cListener != null)
navigationHelper.removeBaseIndexChangeListener(cListener);
}
Map<IInstanceObserver, EObjectObserver> instanceObservers =
new HashMap<IInstanceObserver, EObjectObserver>();
@Override
public boolean addInstanceObserver(final IInstanceObserver observer,
Object observedObject) {
if (observedObject instanceof EObject) {
EObjectObserver emfObserver = instanceObservers.computeIfAbsent(observer, EObjectObserver::new);
boolean success =
navigationHelper.addLightweightEObjectObserver(emfObserver, (EObject) observedObject);
if (success) emfObserver.usageCount++;
return success;
} else return false;
}
@Override
public boolean removeInstanceObserver(IInstanceObserver observer,
Object observedObject) {
if (observedObject instanceof EObject) {
EObjectObserver emfObserver = instanceObservers.get(observer);
if (emfObserver == null)
return false;
boolean success =
navigationHelper.removeLightweightEObjectObserver(emfObserver, (EObject)observedObject);
if (success)
if (0 == --emfObserver.usageCount)
instanceObservers.remove(observer);
return success;
} else return false;
}
private static class EObjectObserver implements LightweightEObjectObserver {
/**
*
*/
private final IInstanceObserver observer;
int usageCount = 0;
/**
* @param observer
*/
private EObjectObserver(IInstanceObserver observer) {
this.observer = observer;
}
@Override
public void notifyFeatureChanged(EObject host,
EStructuralFeature feature, Notification notification) {
observer.notifyBinaryChanged(host, feature);
}
}
}
|
