Exemple #1
0
        public void TestDuplicates()
        {
            testName = "TestDuplicates";
            SetUpTest(true);
            string dbFileName    = testHome + "/" + testName + ".db";
            string dbSecFileName = testHome + "/" + testName
                                   + "_sec.db";

            // Open a primary hash database.
            HashDatabaseConfig dbConfig =
                new HashDatabaseConfig();

            dbConfig.Creation = CreatePolicy.ALWAYS;
            HashDatabase db = HashDatabase.Open(
                dbFileName, dbConfig);

            // Open a secondary hash database.
            SecondaryHashDatabaseConfig secConfig =
                new SecondaryHashDatabaseConfig(null, null);

            secConfig.Primary    = db;
            secConfig.Duplicates = DuplicatesPolicy.SORTED;
            secConfig.Creation   = CreatePolicy.IF_NEEDED;
            SecondaryHashDatabase secDB =
                SecondaryHashDatabase.Open(
                    dbSecFileName, secConfig);

            // Confirm the duplicate in opened secondary database.
            Assert.AreEqual(DuplicatesPolicy.SORTED,
                            secDB.Duplicates);

            secDB.Close();
            db.Close();
        }
        public void TestHashFunction()
        {
            testName = "TestHashFunction";
            testHome = testFixtureHome + "/" + testName;
            string dbFileName    = testHome + "/" + testName + ".db";
            string dbSecFileName = testHome + "/" +
                                   testName + "_sec.db";

            Configuration.ClearDir(testHome);

            // Open a primary hash database.
            HashDatabaseConfig dbConfig =
                new HashDatabaseConfig();

            dbConfig.Creation = CreatePolicy.IF_NEEDED;
            HashDatabase hashDB = HashDatabase.Open(
                dbFileName, dbConfig);

            /*
             * Define hash function and open a secondary
             * hash database.
             */
            SecondaryHashDatabaseConfig secDBConfig =
                new SecondaryHashDatabaseConfig(hashDB, null);

            secDBConfig.HashFunction =
                new HashFunctionDelegate(HashFunction);
            secDBConfig.Creation = CreatePolicy.IF_NEEDED;
            SecondaryHashDatabase secDB =
                SecondaryHashDatabase.Open(dbSecFileName,
                                           secDBConfig);

            /*
             * Confirm the hash function defined in the configuration.
             * Call the hash function and the one from secondary
             * database. If they return the same value, then the hash
             * function is configured successfully.
             */
            uint data = secDB.HashFunction(BitConverter.GetBytes(1));

            Assert.AreEqual(0, data);

            // Close all.
            secDB.Close();
            hashDB.Close();
        }
        public void TestCompare()
        {
            testName = "TestCompare";
            testHome = testFixtureHome + "/" + testName;
            string dbFileName    = testHome + "/" + testName + ".db";
            string dbSecFileName = testHome + "/" + testName +
                                   "_sec.db";

            Configuration.ClearDir(testHome);

            // Open a primary hash database.
            HashDatabaseConfig dbConfig =
                new HashDatabaseConfig();

            dbConfig.Creation = CreatePolicy.ALWAYS;
            HashDatabase db = HashDatabase.Open(
                dbFileName, dbConfig);

            // Open a secondary hash database.
            SecondaryHashDatabaseConfig secConfig =
                new SecondaryHashDatabaseConfig(null, null);

            secConfig.Creation = CreatePolicy.IF_NEEDED;
            secConfig.Primary  = db;
            secConfig.Compare  =
                new EntryComparisonDelegate(SecondaryEntryComparison);
            SecondaryHashDatabase secDB =
                SecondaryHashDatabase.Open(dbSecFileName, secConfig);

            /*
             * Get the compare function set in the configuration
             * and run it in a comparison to see if it is alright.
             */
            DatabaseEntry dbt1, dbt2;

            dbt1 = new DatabaseEntry(
                BitConverter.GetBytes((int)257));
            dbt2 = new DatabaseEntry(
                BitConverter.GetBytes((int)255));
            Assert.Less(0, secDB.Compare(dbt1, dbt2));

            secDB.Close();
            db.Close();
        }
        public void TestForeignKeyDelete(DatabaseType dbtype, ForeignKeyDeleteAction action)
        {
            SetUpTest(true);
            string dbFileName  = testHome + "/" + testName + ".db";
            string fdbFileName = testHome + "/" + testName + "foreign.db";
            string sdbFileName = testHome + "/" + testName + "sec.db";

            Database          primaryDB, fdb;
            SecondaryDatabase secDB;

            // Open primary database.
            if (dbtype == DatabaseType.BTREE)
            {
                BTreeDatabaseConfig btConfig = new BTreeDatabaseConfig();
                btConfig.Creation = CreatePolicy.ALWAYS;
                primaryDB         = BTreeDatabase.Open(dbFileName, btConfig);
                fdb = BTreeDatabase.Open(fdbFileName, btConfig);
            }
            else if (dbtype == DatabaseType.HASH)
            {
                HashDatabaseConfig hConfig = new HashDatabaseConfig();
                hConfig.Creation = CreatePolicy.ALWAYS;
                primaryDB        = HashDatabase.Open(dbFileName, hConfig);
                fdb = HashDatabase.Open(fdbFileName, hConfig);
            }
            else if (dbtype == DatabaseType.QUEUE)
            {
                QueueDatabaseConfig qConfig = new QueueDatabaseConfig();
                qConfig.Creation = CreatePolicy.ALWAYS;
                qConfig.Length   = 4;
                primaryDB        = QueueDatabase.Open(dbFileName, qConfig);
                fdb = QueueDatabase.Open(fdbFileName, qConfig);
            }
            else if (dbtype == DatabaseType.RECNO)
            {
                RecnoDatabaseConfig rConfig = new RecnoDatabaseConfig();
                rConfig.Creation = CreatePolicy.ALWAYS;
                primaryDB        = RecnoDatabase.Open(dbFileName, rConfig);
                fdb = RecnoDatabase.Open(fdbFileName, rConfig);
            }
            else
            {
                throw new ArgumentException("Invalid DatabaseType");
            }

            // Open secondary database.
            if (dbtype == DatabaseType.BTREE)
            {
                SecondaryBTreeDatabaseConfig secbtConfig =
                    new SecondaryBTreeDatabaseConfig(primaryDB,
                                                     new SecondaryKeyGenDelegate(SecondaryKeyGen));
                secbtConfig.Creation   = CreatePolicy.ALWAYS;
                secbtConfig.Duplicates = DuplicatesPolicy.SORTED;
                if (action == ForeignKeyDeleteAction.NULLIFY)
                {
                    secbtConfig.SetForeignKeyConstraint(fdb, action, new ForeignKeyNullifyDelegate(Nullify));
                }
                else
                {
                    secbtConfig.SetForeignKeyConstraint(fdb, action);
                }
                secDB = SecondaryBTreeDatabase.Open(sdbFileName, secbtConfig);
            }
            else if (dbtype == DatabaseType.HASH)
            {
                SecondaryHashDatabaseConfig sechConfig =
                    new SecondaryHashDatabaseConfig(primaryDB,
                                                    new SecondaryKeyGenDelegate(SecondaryKeyGen));
                sechConfig.Creation   = CreatePolicy.ALWAYS;
                sechConfig.Duplicates = DuplicatesPolicy.SORTED;
                if (action == ForeignKeyDeleteAction.NULLIFY)
                {
                    sechConfig.SetForeignKeyConstraint(fdb, action, new ForeignKeyNullifyDelegate(Nullify));
                }
                else
                {
                    sechConfig.SetForeignKeyConstraint(fdb, action);
                }
                secDB = SecondaryHashDatabase.Open(sdbFileName, sechConfig);
            }
            else if (dbtype == DatabaseType.QUEUE)
            {
                SecondaryQueueDatabaseConfig secqConfig =
                    new SecondaryQueueDatabaseConfig(primaryDB,
                                                     new SecondaryKeyGenDelegate(SecondaryKeyGen));
                secqConfig.Creation = CreatePolicy.ALWAYS;
                secqConfig.Length   = 4;
                if (action == ForeignKeyDeleteAction.NULLIFY)
                {
                    secqConfig.SetForeignKeyConstraint(fdb, action, new ForeignKeyNullifyDelegate(Nullify));
                }
                else
                {
                    secqConfig.SetForeignKeyConstraint(fdb, action);
                }
                secDB = SecondaryQueueDatabase.Open(sdbFileName, secqConfig);
            }
            else if (dbtype == DatabaseType.RECNO)
            {
                SecondaryRecnoDatabaseConfig secrConfig =
                    new SecondaryRecnoDatabaseConfig(primaryDB,
                                                     new SecondaryKeyGenDelegate(SecondaryKeyGen));
                secrConfig.Creation = CreatePolicy.ALWAYS;
                if (action == ForeignKeyDeleteAction.NULLIFY)
                {
                    secrConfig.SetForeignKeyConstraint(fdb, action, new ForeignKeyNullifyDelegate(Nullify));
                }
                else
                {
                    secrConfig.SetForeignKeyConstraint(fdb, action);
                }
                secDB = SecondaryRecnoDatabase.Open(sdbFileName, secrConfig);
            }
            else
            {
                throw new ArgumentException("Invalid DatabaseType");
            }

            /* Use integer keys for Queue/Recno support. */
            fdb.Put(new DatabaseEntry(BitConverter.GetBytes(100)),
                    new DatabaseEntry(BitConverter.GetBytes(1001)));
            fdb.Put(new DatabaseEntry(BitConverter.GetBytes(200)),
                    new DatabaseEntry(BitConverter.GetBytes(2002)));
            fdb.Put(new DatabaseEntry(BitConverter.GetBytes(300)),
                    new DatabaseEntry(BitConverter.GetBytes(3003)));

            primaryDB.Put(new DatabaseEntry(BitConverter.GetBytes(1)),
                          new DatabaseEntry(BitConverter.GetBytes(100)));
            primaryDB.Put(new DatabaseEntry(BitConverter.GetBytes(2)),
                          new DatabaseEntry(BitConverter.GetBytes(200)));
            if (dbtype == DatabaseType.BTREE || dbtype == DatabaseType.HASH)
            {
                primaryDB.Put(new DatabaseEntry(BitConverter.GetBytes(3)),
                              new DatabaseEntry(BitConverter.GetBytes(100)));
            }

            try {
                fdb.Delete(new DatabaseEntry(BitConverter.GetBytes(100)));
            } catch (ForeignConflictException) {
                Assert.AreEqual(action, ForeignKeyDeleteAction.ABORT);
            }
            if (action == ForeignKeyDeleteAction.ABORT)
            {
                Assert.IsTrue(secDB.Exists(new DatabaseEntry(BitConverter.GetBytes(100))));
                Assert.IsTrue(primaryDB.Exists(new DatabaseEntry(BitConverter.GetBytes(1))));
                Assert.IsTrue(fdb.Exists(new DatabaseEntry(BitConverter.GetBytes(100))));
            }
            else if (action == ForeignKeyDeleteAction.CASCADE)
            {
                try {
                    Assert.IsFalse(secDB.Exists(new DatabaseEntry(BitConverter.GetBytes(100))));
                } catch (KeyEmptyException) {
                    Assert.IsTrue(dbtype == DatabaseType.QUEUE || dbtype == DatabaseType.RECNO);
                }
                try {
                    Assert.IsFalse(primaryDB.Exists(new DatabaseEntry(BitConverter.GetBytes(1))));
                } catch (KeyEmptyException) {
                    Assert.IsTrue(dbtype == DatabaseType.QUEUE || dbtype == DatabaseType.RECNO);
                }
                try {
                    Assert.IsFalse(fdb.Exists(new DatabaseEntry(BitConverter.GetBytes(100))));
                } catch (KeyEmptyException) {
                    Assert.IsTrue(dbtype == DatabaseType.QUEUE || dbtype == DatabaseType.RECNO);
                }
            }
            else if (action == ForeignKeyDeleteAction.NULLIFY)
            {
                try {
                    Assert.IsFalse(secDB.Exists(new DatabaseEntry(BitConverter.GetBytes(100))));
                } catch (KeyEmptyException) {
                    Assert.IsTrue(dbtype == DatabaseType.QUEUE || dbtype == DatabaseType.RECNO);
                }
                Assert.IsTrue(primaryDB.Exists(new DatabaseEntry(BitConverter.GetBytes(1))));
                try {
                    Assert.IsFalse(fdb.Exists(new DatabaseEntry(BitConverter.GetBytes(100))));
                } catch (KeyEmptyException) {
                    Assert.IsTrue(dbtype == DatabaseType.QUEUE || dbtype == DatabaseType.RECNO);
                }
            }

            // Close secondary database.
            secDB.Close();

            // Close primary database.
            primaryDB.Close();

            // Close foreign database
            fdb.Close();
        }
        private void DeleteMultipleAndMultipleKey(string dbFileName,
                                                  string dbName, DatabaseType type, bool mulKey)
        {
            List <DatabaseEntry> kList = new List <DatabaseEntry>();
            List <uint>          rList = new List <uint>();
            List <KeyValuePair <DatabaseEntry, DatabaseEntry> > pList =
                new List <KeyValuePair <DatabaseEntry, DatabaseEntry> >();
            DatabaseEntry     key;
            Database          db;
            SecondaryDatabase secDb;

            Configuration.ClearDir(testHome);

            if (type == DatabaseType.BTREE)
            {
                BTreeDatabaseConfig dbConfig =
                    new BTreeDatabaseConfig();
                dbConfig.Creation = CreatePolicy.IF_NEEDED;
                db = BTreeDatabase.Open(
                    dbFileName, dbName, dbConfig);
                SecondaryBTreeDatabaseConfig secDbConfig =
                    new SecondaryBTreeDatabaseConfig(db, null);
                secDbConfig.Creation   = CreatePolicy.IF_NEEDED;
                secDbConfig.Duplicates = DuplicatesPolicy.SORTED;
                secDbConfig.KeyGen     =
                    new SecondaryKeyGenDelegate(SecondaryKeyGen);
                secDb = SecondaryBTreeDatabase.Open(
                    dbFileName, dbName + "_sec", secDbConfig);
            }
            else if (type == DatabaseType.HASH)
            {
                HashDatabaseConfig dbConfig =
                    new HashDatabaseConfig();
                dbConfig.Creation = CreatePolicy.IF_NEEDED;
                db = HashDatabase.Open(
                    dbFileName, dbName, dbConfig);
                SecondaryHashDatabaseConfig secDbConfig =
                    new SecondaryHashDatabaseConfig(db, null);
                secDbConfig.Creation   = CreatePolicy.IF_NEEDED;
                secDbConfig.Duplicates = DuplicatesPolicy.SORTED;
                secDbConfig.KeyGen     =
                    new SecondaryKeyGenDelegate(SecondaryKeyGen);
                secDb = SecondaryHashDatabase.Open(
                    dbFileName, dbName + "_sec", secDbConfig);
            }
            else if (type == DatabaseType.QUEUE)
            {
                QueueDatabaseConfig dbConfig =
                    new QueueDatabaseConfig();
                dbConfig.Creation = CreatePolicy.IF_NEEDED;
                dbConfig.Length   = 4;
                db = QueueDatabase.Open(dbFileName, dbConfig);
                SecondaryQueueDatabaseConfig secDbConfig =
                    new SecondaryQueueDatabaseConfig(db, null);
                secDbConfig.Creation = CreatePolicy.IF_NEEDED;
                secDbConfig.Length   = 4;
                secDbConfig.KeyGen   =
                    new SecondaryKeyGenDelegate(SecondaryKeyGen);
                secDb = SecondaryQueueDatabase.Open(
                    dbFileName + "_sec", secDbConfig);
            }
            else if (type == DatabaseType.RECNO)
            {
                RecnoDatabaseConfig dbConfig =
                    new RecnoDatabaseConfig();
                dbConfig.Creation = CreatePolicy.IF_NEEDED;
                db = RecnoDatabase.Open(
                    dbFileName, dbName, dbConfig);
                SecondaryRecnoDatabaseConfig secDbConfig =
                    new SecondaryRecnoDatabaseConfig(db, null);
                secDbConfig.Creation = CreatePolicy.IF_NEEDED;
                secDbConfig.KeyGen   =
                    new SecondaryKeyGenDelegate(SecondaryKeyGen);
                secDb = SecondaryRecnoDatabase.Open(
                    dbFileName, dbName + "_sec", secDbConfig);
            }
            else
            {
                throw new TestException();
            }

            for (uint i = 1; i <= 100; i++)
            {
                key = new DatabaseEntry(
                    BitConverter.GetBytes(i));
                if (i >= 50 && i < 60)
                {
                    kList.Add(key);
                }
                else if (i > 80)
                {
                    pList.Add(new KeyValuePair <
                                  DatabaseEntry, DatabaseEntry>(
                                  key, key));
                }
                else if (type == DatabaseType.QUEUE ||
                         type == DatabaseType.RECNO)
                {
                    rList.Add(i);
                }

                db.Put(key, key);
            }

            if (mulKey)
            {
                // Create bulk buffer for key/value pairs.
                MultipleKeyDatabaseEntry pBuff;
                if (type == DatabaseType.BTREE)
                {
                    pBuff = new MultipleKeyDatabaseEntry(
                        pList, false);
                }
                else if (type == DatabaseType.HASH)
                {
                    pBuff = new MultipleKeyDatabaseEntry(
                        pList, false);
                }
                else if (type == DatabaseType.QUEUE)
                {
                    pBuff = new MultipleKeyDatabaseEntry(
                        pList, true);
                }
                else
                {
                    pBuff = new MultipleKeyDatabaseEntry(
                        pList, true);
                }

                // Bulk delete with the key/value pair bulk buffer.
                secDb.Delete(pBuff);
                foreach (KeyValuePair <DatabaseEntry,
                                       DatabaseEntry> pair in pList)
                {
                    try {
                        db.GetBoth(pair.Key, pair.Value);
                        throw new TestException();
                    } catch (NotFoundException e1) {
                        if (type == DatabaseType.QUEUE)
                        {
                            throw e1;
                        }
                    } catch (KeyEmptyException e2) {
                        if (type == DatabaseType.BTREE ||
                            type == DatabaseType.HASH ||
                            type == DatabaseType.RECNO)
                        {
                            throw e2;
                        }
                    }
                }

                /*
                 * Dump the database to verify that 80 records
                 * remain after bulk delete.
                 */
                Assert.AreEqual(80, db.Truncate());
            }
            else
            {
                // Create bulk buffer for key.
                MultipleDatabaseEntry kBuff;
                if (type == DatabaseType.BTREE)
                {
                    kBuff = new MultipleDatabaseEntry(
                        kList, false);
                }
                else if (type == DatabaseType.HASH)
                {
                    kBuff = new MultipleDatabaseEntry(
                        kList, false);
                }
                else if (type == DatabaseType.QUEUE)
                {
                    kBuff = new MultipleDatabaseEntry(
                        kList, true);
                }
                else
                {
                    kBuff = new MultipleDatabaseEntry(
                        kList, true);
                }

                /*
                 * Bulk delete in secondary database with key
                 * buffer. Primary records that the deleted
                 * records in secondar database should be
                 * deleted as well.
                 */
                secDb.Delete(kBuff);
                foreach (DatabaseEntry dbt in kList)
                {
                    try {
                        db.Get(dbt);
                        throw new TestException();
                    } catch (NotFoundException e1) {
                        if (type == DatabaseType.QUEUE ||
                            type == DatabaseType.RECNO)
                        {
                            throw e1;
                        }
                    } catch (KeyEmptyException e2) {
                        if (type == DatabaseType.BTREE ||
                            type == DatabaseType.HASH)
                        {
                            throw e2;
                        }
                    }
                }

                /*
                 * Bulk delete in secondary database with recno
                 * based key buffer.
                 */
                if (type == DatabaseType.QUEUE ||
                    type == DatabaseType.RECNO)
                {
                    MultipleDatabaseEntry rBuff =
                        new MultipleDatabaseEntry(rList);
                    secDb.Delete(rBuff);
                    Assert.AreEqual(20, db.Truncate());
                }
            }

            secDb.Close();
            db.Close();
        }
Exemple #6
0
        public void OpenSecHashDBWithinTxn(string className,
                                           string funName, string home, string dbFileName,
                                           string dbSecFileName, bool ifDbName)
        {
            XmlElement xmlElem = Configuration.TestSetUp(
                className, funName);

            // Open an environment.
            DatabaseEnvironmentConfig envConfig =
                new DatabaseEnvironmentConfig();

            envConfig.Create     = true;
            envConfig.UseTxns    = true;
            envConfig.UseMPool   = true;
            envConfig.UseLogging = true;
            DatabaseEnvironment env = DatabaseEnvironment.Open(
                home, envConfig);

            // Open a primary hash database.
            Transaction        openDBTxn = env.BeginTransaction();
            HashDatabaseConfig dbConfig  =
                new HashDatabaseConfig();

            dbConfig.Creation = CreatePolicy.IF_NEEDED;
            dbConfig.Env      = env;
            HashDatabase db = HashDatabase.Open(
                dbFileName, dbConfig, openDBTxn);

            openDBTxn.Commit();

            // Open a secondary hash database.
            Transaction openSecTxn = env.BeginTransaction();
            SecondaryHashDatabaseConfig secDBConfig =
                new SecondaryHashDatabaseConfig(db,
                                                new SecondaryKeyGenDelegate(SecondaryKeyGen));

            SecondaryHashDatabaseConfigTest.Config(xmlElem,
                                                   ref secDBConfig, false);
            secDBConfig.HashFunction = null;
            secDBConfig.Env          = env;
            SecondaryHashDatabase secDB;

            if (ifDbName == false)
            {
                secDB = SecondaryHashDatabase.Open(
                    dbSecFileName, secDBConfig, openSecTxn);
            }
            else
            {
                secDB = SecondaryHashDatabase.Open(
                    dbSecFileName, "secondary", secDBConfig,
                    openSecTxn);
            }
            openSecTxn.Commit();

            // Confirm its flags configured in secDBConfig.
            Confirm(xmlElem, secDB, true);
            secDB.Close();

            // Open the existing secondary database.
            Transaction             secTxn    = env.BeginTransaction();
            SecondaryDatabaseConfig secConfig =
                new SecondaryDatabaseConfig(db,
                                            new SecondaryKeyGenDelegate(SecondaryKeyGen));

            secConfig.Env = env;

            SecondaryDatabase secExDB;

            if (ifDbName == false)
            {
                secExDB = SecondaryHashDatabase.Open(
                    dbSecFileName, secConfig, secTxn);
            }
            else
            {
                secExDB = SecondaryHashDatabase.Open(
                    dbSecFileName, "secondary", secConfig,
                    secTxn);
            }
            secExDB.Close();
            secTxn.Commit();

            db.Close();
            env.Close();
        }
Exemple #7
0
        public void OpenSecHashDB(string className,
                                  string funName, string dbFileName, string dbSecFileName,
                                  bool ifDBName)
        {
            XmlElement xmlElem = Configuration.TestSetUp(
                className, funName);

            // Open a primary recno database.
            HashDatabaseConfig primaryDBConfig =
                new HashDatabaseConfig();

            primaryDBConfig.Creation = CreatePolicy.IF_NEEDED;
            HashDatabase primaryDB;

            /*
             * If secondary database name is given, the primary
             * database is also opened with database name.
             */
            if (ifDBName == false)
            {
                primaryDB = HashDatabase.Open(dbFileName,
                                              primaryDBConfig);
            }
            else
            {
                primaryDB = HashDatabase.Open(dbFileName,
                                              "primary", primaryDBConfig);
            }

            try
            {
                // Open a new secondary database.
                SecondaryHashDatabaseConfig secHashDBConfig =
                    new SecondaryHashDatabaseConfig(
                        primaryDB, null);
                SecondaryHashDatabaseConfigTest.Config(
                    xmlElem, ref secHashDBConfig, false);
                secHashDBConfig.Creation =
                    CreatePolicy.IF_NEEDED;

                SecondaryHashDatabase secHashDB;
                if (ifDBName == false)
                {
                    secHashDB = SecondaryHashDatabase.Open(
                        dbSecFileName, secHashDBConfig);
                }
                else
                {
                    secHashDB = SecondaryHashDatabase.Open(
                        dbSecFileName, "secondary",
                        secHashDBConfig);
                }

                // Close the secondary database.
                secHashDB.Close();

                // Open the existing secondary database.
                SecondaryDatabaseConfig secDBConfig =
                    new SecondaryDatabaseConfig(
                        primaryDB, null);

                SecondaryDatabase secDB;
                if (ifDBName == false)
                {
                    secDB = SecondaryHashDatabase.Open(
                        dbSecFileName, secDBConfig);
                }
                else
                {
                    secDB = SecondaryHashDatabase.Open(
                        dbSecFileName, "secondary", secDBConfig);
                }

                // Close secondary database.
                secDB.Close();
            }
            catch (DatabaseException)
            {
                throw new TestException();
            }
            finally
            {
                // Close primary database.
                primaryDB.Close();
            }
        }