Skip to main content
aboutsummaryrefslogtreecommitdiffstats
blob: ea998be2e1f9b25253bb1eb8c09679df1e0b6923 (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
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
/***************************************************************************
 * 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.cdo.server.internal.db;

import org.eclipse.emf.cdo.internal.server.LongIDStore;
import org.eclipse.emf.cdo.protocol.model.CDOType;
import org.eclipse.emf.cdo.server.ISession;
import org.eclipse.emf.cdo.server.IView;
import org.eclipse.emf.cdo.server.StoreUtil;
import org.eclipse.emf.cdo.server.db.IClassMapping;
import org.eclipse.emf.cdo.server.db.IDBStore;
import org.eclipse.emf.cdo.server.db.IMappingStrategy;
import org.eclipse.emf.cdo.server.internal.db.bundle.OM;

import org.eclipse.net4j.db.DBException;
import org.eclipse.net4j.db.DBType;
import org.eclipse.net4j.db.DBUtil;
import org.eclipse.net4j.db.IDBAdapter;
import org.eclipse.net4j.db.IDBConnectionProvider;
import org.eclipse.net4j.db.ddl.IDBSchema;
import org.eclipse.net4j.db.ddl.IDBTable;
import org.eclipse.net4j.internal.db.DataSourceConnectionProvider;
import org.eclipse.net4j.internal.db.ddl.DBSchema;
import org.eclipse.net4j.util.ImplementationError;
import org.eclipse.net4j.util.lifecycle.LifecycleUtil;

import javax.sql.DataSource;

import java.sql.Connection;
import java.text.MessageFormat;
import java.util.Set;

/**
 * @author Eike Stepper
 */
public class DBStore extends LongIDStore implements IDBStore
{
  public static final String TYPE = "db";

  private IMappingStrategy mappingStrategy;

  private IDBSchema dbSchema;

  private IDBAdapter dbAdapter;

  private IDBConnectionProvider dbConnectionProvider;

  private int nextPackageID;

  private int nextClassID;

  private int nextFeatureID;

  public DBStore()
  {
    super(TYPE);
  }

  public IMappingStrategy getMappingStrategy()
  {
    return mappingStrategy;
  }

  public void setMappingStrategy(IMappingStrategy mappingStrategy)
  {
    this.mappingStrategy = mappingStrategy;
    mappingStrategy.setStore(this);
  }

  public IDBAdapter getDBAdapter()
  {
    return dbAdapter;
  }

  public void setDbAdapter(IDBAdapter dbAdapter)
  {
    this.dbAdapter = dbAdapter;
  }

  public IDBConnectionProvider getDBConnectionProvider()
  {
    return dbConnectionProvider;
  }

  public void setDbConnectionProvider(IDBConnectionProvider dbConnectionProvider)
  {
    this.dbConnectionProvider = dbConnectionProvider;
  }

  public void setDataSource(DataSource dataSource)
  {
    dbConnectionProvider = new DataSourceConnectionProvider(dataSource);
  }

  public synchronized IDBSchema getDBSchema()
  {
    // TODO Better synchronization or eager init
    if (dbSchema == null)
    {
      dbSchema = createSchema();
    }

    return dbSchema;
  }

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

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

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

  @Override
  public DBStoreReader getReader(ISession session)
  {
    return (DBStoreReader)super.getReader(session);
  }

  @Override
  public DBStoreReader createReader(ISession session) throws DBException
  {
    return new DBStoreReader(this, session);
  }

  @Override
  public DBStoreWriter getWriter(IView view)
  {
    return (DBStoreWriter)super.getWriter(view);
  }

  @Override
  public DBStoreWriter createWriter(IView view) throws DBException
  {
    return new DBStoreWriter(this, view);
  }

  public synchronized int getNextPackageID()
  {
    // TODO Better synchronization
    return nextPackageID++;
  }

  public synchronized int getNextClassID()
  {
    // TODO Better synchronization
    return nextClassID++;
  }

  public synchronized int getNextFeatureID()
  {
    // TODO Better synchronization
    return nextFeatureID++;
  }

  public Connection getConnection()
  {
    Connection connection = dbConnectionProvider.getConnection();
    if (connection == null)
    {
      throw new DBException("No connection from connection provider: " + dbConnectionProvider);
    }

    return connection;
  }

  @Override
  protected void doBeforeActivate() throws Exception
  {
    super.doBeforeActivate();
    checkNull(mappingStrategy, "mappingStrategy is null");
    checkNull(dbAdapter, "dbAdapter is null");
    checkNull(dbConnectionProvider, "dbConnectionProvider is null");
  }

  @Override
  protected void doActivate() throws Exception
  {
    super.doActivate();
    Connection connection = null;

    try
    {
      connection = getConnection();
      Set<IDBTable> createdTables = CDODBSchema.INSTANCE.create(dbAdapter, dbConnectionProvider);
      if (createdTables.contains(CDODBSchema.REPOSITORY))
      {
        // First start
        DBUtil.insertRow(connection, dbAdapter, CDODBSchema.REPOSITORY, 1, System.currentTimeMillis(), 0, CRASHED,
            CRASHED);

        MappingStrategy mappingStrategy = (MappingStrategy)getMappingStrategy();

        IClassMapping resourceClassMapping = mappingStrategy.getResourceClassMapping();
        Set<IDBTable> tables = resourceClassMapping.getAffectedTables();
        if (dbAdapter.createTables(tables, connection).size() != tables.size())
        {
          throw new DBException("CDOResource tables not completely created");
        }
      }
      else
      {
        // Restart
        long lastObjectID = DBUtil.selectMaximumLong(connection, CDODBSchema.REPOSITORY_NEXT_CDOID);
        setLastMetaID(DBUtil.selectMaximumLong(connection, CDODBSchema.REPOSITORY_NEXT_METAID));
        if (lastObjectID == CRASHED || getLastMetaID() == CRASHED)
        {
          OM.LOG.warn("Detected restart after crash");
        }

        setLastObjectID(lastObjectID);

        StringBuilder builder = new StringBuilder();
        builder.append("UPDATE ");
        builder.append(CDODBSchema.REPOSITORY);
        builder.append(" SET ");
        builder.append(CDODBSchema.REPOSITORY_STARTS);
        builder.append("=");
        builder.append(CDODBSchema.REPOSITORY_STARTS);
        builder.append("+1, ");
        builder.append(CDODBSchema.REPOSITORY_STARTED);
        builder.append("=");
        builder.append(System.currentTimeMillis());
        builder.append(", ");
        builder.append(CDODBSchema.REPOSITORY_STOPPED);
        builder.append("=0, ");
        builder.append(CDODBSchema.REPOSITORY_NEXT_CDOID);
        builder.append("=");
        builder.append(CRASHED);
        builder.append(", ");
        builder.append(CDODBSchema.REPOSITORY_NEXT_METAID);
        builder.append("=");
        builder.append(CRASHED);

        String sql = builder.toString();
        int count = DBUtil.update(connection, sql);
        if (count == 0)
        {
          throw new DBException("No row updated in table " + CDODBSchema.REPOSITORY);
        }
      }

      nextPackageID = DBUtil.selectMaximumInt(connection, CDODBSchema.PACKAGES_ID) + 1;
      nextClassID = DBUtil.selectMaximumInt(connection, CDODBSchema.CLASSES_ID) + 1;
      nextFeatureID = DBUtil.selectMaximumInt(connection, CDODBSchema.FEATURES_ID) + 1;
      LifecycleUtil.activate(mappingStrategy);
    }
    finally
    {
      DBUtil.close(connection);
    }
  }

  @Override
  protected void doDeactivate() throws Exception
  {
    Connection connection = null;

    try
    {
      connection = getConnection();

      LifecycleUtil.deactivate(mappingStrategy);

      StringBuilder builder = new StringBuilder();
      builder.append("UPDATE ");
      builder.append(CDODBSchema.REPOSITORY);
      builder.append(" SET ");
      builder.append(CDODBSchema.REPOSITORY_STOPPED);
      builder.append("=");
      builder.append(System.currentTimeMillis());
      builder.append(", ");
      builder.append(CDODBSchema.REPOSITORY_NEXT_CDOID);
      builder.append("=");
      builder.append(getLastObjectID());
      builder.append(", ");
      builder.append(CDODBSchema.REPOSITORY_NEXT_METAID);
      builder.append("=");
      builder.append(getRepository().getLastMetaID());

      String sql = builder.toString();
      int count = DBUtil.update(connection, sql);
      if (count == 0)
      {
        throw new DBException("No row updated in table " + CDODBSchema.REPOSITORY);
      }
    }
    finally
    {
      DBUtil.close(connection);
    }

    super.doDeactivate();
  }

  @Override
  public void repairAfterCrash()
  {
    DBStoreReader storeReader = getReader(null);
    StoreUtil.setReader(storeReader);

    try
    {
      Connection connection = storeReader.getConnection();
      long maxObjectID = mappingStrategy.repairAfterCrash(connection);
      setLastMetaID(DBUtil.selectMaximumLong(connection, CDODBSchema.PACKAGES_RANGE_UB));

      OM.LOG.info(MessageFormat.format("Repaired after crash: maxObjectID={0}, maxMetaID={1}", maxObjectID,
          getLastMetaID()));
      setLastObjectID(maxObjectID);
    }
    finally
    {
      storeReader.release();
      StoreUtil.setReader(null);
    }
  }

  protected IDBSchema createSchema()
  {
    String name = getRepository().getName();
    return new DBSchema(name);
  }

  public static DBType getDBType(CDOType type)
  {
    if (type == CDOType.BOOLEAN || type == CDOType.BOOLEAN_OBJECT)
    {
      return DBType.BOOLEAN;
    }
    else if (type == CDOType.BYTE || type == CDOType.BYTE_OBJECT)
    {
      return DBType.SMALLINT;
    }
    else if (type == CDOType.CHAR || type == CDOType.CHARACTER_OBJECT)
    {
      return DBType.CHAR;
    }
    else if (type == CDOType.DATE)
    {
      return DBType.DATE;
    }
    else if (type == CDOType.DOUBLE || type == CDOType.DOUBLE_OBJECT)
    {
      return DBType.DOUBLE;
    }
    else if (type == CDOType.FLOAT || type == CDOType.FLOAT_OBJECT)
    {
      return DBType.FLOAT;
    }
    else if (type == CDOType.INT || type == CDOType.INTEGER_OBJECT)
    {
      return DBType.INTEGER;
    }
    else if (type == CDOType.LONG || type == CDOType.LONG_OBJECT)
    {
      return DBType.BIGINT;
    }
    else if (type == CDOType.OBJECT)
    {
      return DBType.BIGINT;
    }
    else if (type == CDOType.SHORT || type == CDOType.SHORT_OBJECT)
    {
      return DBType.SMALLINT;
    }
    else if (type == CDOType.STRING || type == CDOType.CUSTOM)
    {
      return DBType.VARCHAR;
    }

    throw new ImplementationError("Unrecognized CDOType: " + type);
  }
}

Back to the top