Skip to main content
aboutsummaryrefslogtreecommitdiffstats
blob: 249ca32c4c11f23cb0b644b5a484f7fc7f709a22 (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
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
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
/***************************************************************************
 * Copyright (c) 2004-2007 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;

import org.eclipse.emf.cdo.CDOTransaction;
import org.eclipse.emf.cdo.CDOTransactionCommittedEvent;
import org.eclipse.emf.cdo.CDOTransactionDirtyEvent;
import org.eclipse.emf.cdo.eresource.impl.CDOResourceImpl;
import org.eclipse.emf.cdo.internal.protocol.CDOIDImpl;
import org.eclipse.emf.cdo.internal.protocol.model.CDOPackageImpl;
import org.eclipse.emf.cdo.internal.protocol.model.CDOPackageManagerImpl;
import org.eclipse.emf.cdo.protocol.CDOID;
import org.eclipse.emf.cdo.protocol.util.TransportException;

import org.eclipse.net4j.IChannel;
import org.eclipse.net4j.internal.util.om.trace.ContextTracer;
import org.eclipse.net4j.util.ImplementationError;

import org.eclipse.emf.internal.cdo.bundle.OM;
import org.eclipse.emf.internal.cdo.protocol.CommitTransactionRequest;
import org.eclipse.emf.internal.cdo.protocol.CommitTransactionResult;

import java.text.MessageFormat;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * @author Eike Stepper
 */
public class CDOTransactionImpl extends CDOViewImpl implements CDOTransaction
{
  private static final ContextTracer TRACER = new ContextTracer(OM.DEBUG_TRANSCTION, CDOTransactionImpl.class);

  private static final long INITIAL_TEMPORARY_ID = -2L;

  private transient long nextTemporaryID = INITIAL_TEMPORARY_ID;

  private List<CDOPackageImpl> newPackages;

  private Map<CDOID, CDOResourceImpl> newResources = new HashMap();

  private Map<CDOID, InternalCDOObject> newObjects = new HashMap();

  private Map<CDOID, InternalCDOObject> dirtyObjects = new HashMap();

  private boolean dirty;

  public CDOTransactionImpl(int id, CDOSessionImpl session)
  {
    super(id, session);
  }

  @Override
  public boolean isDirty()
  {
    return dirty;
  }

  @Override
  public boolean isTransaction()
  {
    return true;
  }

  @Override
  public boolean isReadOnly()
  {
    return false;
  }

  public List<CDOPackageImpl> getNewPackages()
  {
    return newPackages;
  }

  public Map<CDOID, CDOResourceImpl> getNewResources()
  {
    return newResources;
  }

  public Map<CDOID, InternalCDOObject> getNewObjects()
  {
    return newObjects;
  }

  public Map<CDOID, InternalCDOObject> getDirtyObjects()
  {
    return dirtyObjects;
  }

  public CDOID getNextTemporaryID()
  {
    long id = nextTemporaryID;
    --nextTemporaryID;
    --nextTemporaryID;
    return CDOIDImpl.create(id);
  }

  public void commit()
  {
    checkWritable();
    if (dirty)
    {
      if (TRACER.isEnabled())
      {
        TRACER.trace("commit()");
      }

      try
      {
        CDOSessionImpl session = getSession();
        CDOPackageManagerImpl packageManager = session.getPackageManager();
        newPackages = packageManager.getTransientPackages();

        preCommit(newObjects);
        preCommit(dirtyObjects);

        IChannel channel = session.getChannel();
        CommitTransactionResult result = new CommitTransactionRequest(channel, this).send(100000L);
        // TODO Change timeout semantics in Net4j

        postCommit(newResources, result);
        postCommit(newObjects, result);
        postCommit(dirtyObjects, result);

        if (!dirtyObjects.isEmpty())
        {
          session.notifyInvalidation(result.getTimeStamp(), dirtyObjects.keySet(), this);
        }

        for (CDOPackageImpl newPackage : newPackages)
        {
          newPackage.setPersistent(true);
        }

        newPackages = null;
        newResources.clear();
        newObjects.clear();
        dirtyObjects.clear();
        dirty = false;
        nextTemporaryID = INITIAL_TEMPORARY_ID;

        Map<CDOID, CDOID> idMappings = result.getIDMappings();
        fireEvent(new CommittedEvent(idMappings));
      }
      catch (RuntimeException ex)
      {
        throw ex;
      }
      catch (Exception ex)
      {
        throw new TransportException(ex);
      }
    }
  }

  public void rollback()
  {
    checkWritable();

    try
    {
      // TODO Implement method CDOTransactionImpl.rollback()
      throw new UnsupportedOperationException("Not yet implemented");
    }
    catch (RuntimeException ex)
    {
      throw ex;
    }
    catch (Exception ex)
    {
      throw new TransportException(ex);
    }
  }

  @Override
  public String toString()
  {
    return MessageFormat.format("CDOTransaction({0})", getID());
  }

  public void registerNew(InternalCDOObject object)
  {
    if (object instanceof CDOResourceImpl)
    {
      if (TRACER.isEnabled())
      {
        TRACER.format("Registering new resource {0}", object);
      }

      register(newResources, object);
    }
    else
    {
      if (TRACER.isEnabled())
      {
        TRACER.format("Registering new object {0}", object);
      }

      register(newObjects, object);
    }
  }

  public void registerDirty(InternalCDOObject object)
  {
    if (TRACER.isEnabled())
    {
      TRACER.format("Registering dirty object {0}", object);
    }

    register(dirtyObjects, object);
  }

  private void register(Map map, InternalCDOObject object)
  {
    Object old = map.put(object.cdoID(), object);
    if (old != null)
    {
      throw new ImplementationError("Duplicate ID: " + object);
    }

    if (!dirty)
    {
      dirty = true;
      fireEvent(new DirtyEvent());
    }
  }

  private void preCommit(Map objects)
  {
    if (!objects.isEmpty())
    {
      for (Object object : objects.values())
      {
        ((InternalCDOObject)object).cdoInternalPreCommit();
      }
    }
  }

  private void postCommit(Map objects, CommitTransactionResult result)
  {
    if (!objects.isEmpty())
    {
      for (Object object : objects.values())
      {
        CDOStateMachine.INSTANCE.commit((InternalCDOObject)object, result);
      }
    }
  }

  /**
   * @author Eike Stepper
   */
  private final class DirtyEvent extends Event implements CDOTransactionDirtyEvent
  {
    private static final long serialVersionUID = 1L;

    private DirtyEvent()
    {
    }
  }

  /**
   * @author Eike Stepper
   */
  private final class CommittedEvent extends Event implements CDOTransactionCommittedEvent
  {
    private static final long serialVersionUID = 1L;

    private Map<CDOID, CDOID> idMappings;

    private CommittedEvent(Map<CDOID, CDOID> idMappings)
    {
      this.idMappings = idMappings;
    }

    public Map<CDOID, CDOID> getIDMappings()
    {
      return idMappings;
    }
  }

  // private Collection<CDOPackageImpl> calculateNewPackages()
  // {
  // CDOSessionImpl session = view.getSession();
  // CDOPackageManagerImpl packageManager = session.getPackageManager();
  // return packageManager.getTransientPackages();
  //
  // CDOCorePackageImpl corePackage = packageManager.getCDOCorePackage();
  // CDOResourcePackageImpl resourcePackage =
  // packageManager.getCDOResourcePackage();
  //
  // Set<String> knownPackages = session.getPackageURIs();
  // Map<String, CDOPackageImpl> newPackages = new HashMap();
  // for (InternalCDOObject cdoObject : newObjects.values())
  // {
  // CDOPackageImpl cdoPackage = cdoObject.cdoClass().getContainingPackage();
  // String uri = cdoPackage.getPackageURI();
  // if (!newPackages.containsKey(uri) && !knownPackages.contains(uri))
  // {
  // EPackage ePackage = EMFUtil.getEPackage(cdoPackage);
  // Set<EPackage> ePackages = PackageClosure.calculate(ePackage);
  // for (EPackage eP : ePackages)
  // {
  // CDOPackageImpl cdoP = eP == ePackage ? cdoPackage :
  // EMFUtil.getCDOPackage(eP, packageManager);
  // if (cdoP == null)
  // {
  // throw new IllegalStateException("Not a CDO package: " + eP);
  // }
  //
  // if (cdoP != corePackage && cdoP != resourcePackage)
  // {
  // uri = cdoP.getPackageURI();
  // if (!newPackages.containsKey(uri) && !knownPackages.contains(uri))
  // {
  // newPackages.put(uri, cdoP);
  // }
  // }
  // }
  // }
  // }
  //
  // return newPackages.values();
  // }
}

Back to the top