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
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
|
/***************************************************************************
* Copyright (c) 2004 - 2008 Eike Stepper, Germany.
* 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.util;
import org.eclipse.emf.cdo.CDOObject;
import org.eclipse.emf.cdo.CDOState;
import org.eclipse.emf.cdo.CDOView;
import org.eclipse.emf.cdo.protocol.CDOID;
import org.eclipse.emf.internal.cdo.CDOAdapterImpl;
import org.eclipse.emf.internal.cdo.CDOMetaImpl;
import org.eclipse.emf.internal.cdo.CDOViewImpl;
import org.eclipse.emf.internal.cdo.InternalCDOObject;
import org.eclipse.emf.internal.cdo.bundle.OM;
import org.eclipse.emf.common.notify.Adapter;
import org.eclipse.emf.common.util.EList;
import org.eclipse.emf.ecore.EGenericType;
import org.eclipse.emf.ecore.EModelElement;
import org.eclipse.emf.ecore.InternalEObject;
import org.eclipse.emf.ecore.util.EcoreUtil;
import java.lang.reflect.Method;
import java.util.Collection;
import java.util.Iterator;
/**
* @author Eike Stepper
*/
public final class FSMUtil
{
private static Method adaptLegacyMethod = initAdaptLegacyMethod();
private FSMUtil()
{
}
private static Method initAdaptLegacyMethod()
{
try
{
Class<?> c = Class.forName("org.eclipse.emf.internal.cdo.CDOCallbackImpl");
if (c != null)
{
final Class<?>[] params = { Object.class, CDOView.class };
Method method = c.getDeclaredMethod("adapt", params);
if (method != null)
{
return method;
}
}
}
catch (Throwable ignore)
{
}
OM.LOG.info("Legacy system not available");
return null;
}
public static boolean isLegacySystemAvailable()
{
return adaptLegacyMethod != null;
}
public static boolean isTransient(CDOObject object)
{
CDOState state = object.cdoState();
return state == CDOState.TRANSIENT || state == CDOState.PREPARED;
}
/**
* @param view
* Only needed if object is a meta instance.
*/
public static InternalCDOObject adapt(Object object, CDOView view)
{
if (object == null)
{
throw new IllegalArgumentException("object == null");
}
if (object instanceof InternalCDOObject)
{
return (InternalCDOObject)object;
}
if (object instanceof EModelElement || object instanceof EGenericType
|| object instanceof org.eclipse.emf.ecore.impl.EStringToStringMapEntryImpl)
{
InternalEObject eObject = (InternalEObject)object;
if (view == null)
{
throw new IllegalArgumentException("view == null");
}
if (eObject.eIsProxy())
{
eObject = (InternalEObject)EcoreUtil.resolve(eObject, view.getResourceSet());
}
CDOID id = ((CDOViewImpl)view).getSession().lookupMetaInstanceID(eObject);
if (id != null)
{
return new CDOMetaImpl((CDOViewImpl)view, eObject, id);
}
}
if (isLegacySystemAvailable())
{
try
{
return (InternalCDOObject)adaptLegacyMethod.invoke(null, object, view);
}
catch (Throwable t)
{
OM.LOG.info(t);
}
}
if (object instanceof InternalEObject)
{
EList<Adapter> adapters = ((InternalEObject)object).eAdapters();
CDOAdapterImpl adapter = (CDOAdapterImpl)EcoreUtil.getAdapter(adapters, CDOAdapterImpl.class);
if (adapter == null)
{
adapter = new CDOAdapterImpl();
adapters.add(adapter);
}
return adapter;
}
return null;
}
public static Iterator<InternalCDOObject> iterator(Collection<?> instances, final CDOViewImpl view)
{
final Iterator<?> delegate = instances.iterator();
return new Iterator<InternalCDOObject>()
{
private Object next;
public boolean hasNext()
{
while (delegate.hasNext())
{
next = adapt(delegate.next(), view);
if (next instanceof InternalCDOObject)
{
return true;
}
}
return false;
}
public InternalCDOObject next()
{
return (InternalCDOObject)next;
}
public void remove()
{
throw new UnsupportedOperationException();
}
};
}
}
|
