示例#1
0
        public static async Task ReadAsync <T>(DbContext context, IList <T> entities, TableInfo tableInfo, Action <decimal> progress, CancellationToken cancellationToken) where T : class
        {
            Dictionary <string, string> previousPropertyColumnNamesDict = tableInfo.ConfigureBulkReadTableInfo(context);

            string providerName = context.Database.ProviderName;

            // -- SQL Server --
            if (providerName.EndsWith(DbServer.SqlServer.ToString()))
            {
                await context.Database.ExecuteSqlRawAsync(SqlQueryBuilder.CreateTableCopy(tableInfo.FullTableName, tableInfo.FullTempTableName, tableInfo), cancellationToken).ConfigureAwait(false);

                try
                {
                    await InsertAsync(context, entities, tableInfo, progress, cancellationToken).ConfigureAwait(false);

                    tableInfo.PropertyColumnNamesDict = previousPropertyColumnNamesDict;

                    var sqlQuery = SqlQueryBuilder.SelectJoinTable(tableInfo);

                    tableInfo.PropertyColumnNamesDict = previousPropertyColumnNamesDict;

                    //var existingEntities = await context.Set<T>().FromSql(sqlQuery).ToListAsync(cancellationToken);
                    Expression <Func <DbContext, IQueryable <T> > > expression = null;
                    if (tableInfo.BulkConfig.TrackingEntities)
                    {
                        expression = (ctx) => ctx.Set <T>().FromSqlRaw(sqlQuery);
                    }
                    else
                    {
                        expression = (ctx) => ctx.Set <T>().FromSqlRaw(sqlQuery).AsNoTracking();
                    }
                    //var compiled = EF.CompileAsyncQuery(expression);
                    //var existingEntities = await compiled(context).ToListAsync(cancellationToken).ConfigureAwait(false); // TempFIX
                    var compiled         = EF.CompileQuery(expression); // instead using Compiled queries
                    var existingEntities = compiled(context).ToList();

                    tableInfo.UpdateReadEntities(entities, existingEntities);
                }
                finally
                {
                    if (!tableInfo.BulkConfig.UseTempDB)
                    {
                        await context.Database.ExecuteSqlRawAsync(SqlQueryBuilder.DropTable(tableInfo.FullTempTableName), cancellationToken).ConfigureAwait(false);
                    }
                }
            }
            // -- Sqlite --
            else if (providerName.EndsWith(DbServer.Sqlite.ToString()))
            {
                throw new NotImplementedException();
            }
            else
            {
                throw new SqlProviderNotSupportedException(providerName);
            }
        }
示例#2
0
        public static void Read <T>(DbContext context, IList <T> entities, TableInfo tableInfo, Action <decimal> progress) where T : class
        {
            Dictionary <string, string> previousPropertyColumnNamesDict = tableInfo.ConfigureBulkReadTableInfo(context);

            string providerName = context.Database.ProviderName;

            // -- SQL Server --
            if (providerName.EndsWith(DbServer.SqlServer.ToString()))
            {
                context.Database.ExecuteSqlRaw(SqlQueryBuilder.CreateTableCopy(tableInfo.FullTableName, tableInfo.FullTempTableName, tableInfo));
                try
                {
                    Insert(context, entities, tableInfo, progress);

                    tableInfo.PropertyColumnNamesDict = tableInfo.OutputPropertyColumnNamesDict;

                    var sqlQuery = SqlQueryBuilder.SelectJoinTable(tableInfo);

                    tableInfo.PropertyColumnNamesDict = previousPropertyColumnNamesDict;

                    //var existingEntities = context.Set<T>().FromSql(q).AsNoTracking().ToList(); // Not used because of EF Memory leak bug
                    Expression <Func <DbContext, IQueryable <T> > > expression = null;
                    if (tableInfo.BulkConfig.TrackingEntities)
                    {
                        expression = (ctx) => ctx.Set <T>().FromSqlRaw(sqlQuery);
                    }
                    else
                    {
                        expression = (ctx) => ctx.Set <T>().FromSqlRaw(sqlQuery).AsNoTracking();
                    }

                    var compiled         = EF.CompileQuery(expression); // instead using Compiled queries
                    var existingEntities = compiled(context).ToList();

                    tableInfo.UpdateReadEntities(entities, existingEntities);
                }
                finally
                {
                    if (!tableInfo.BulkConfig.UseTempDB)
                    {
                        context.Database.ExecuteSqlRaw(SqlQueryBuilder.DropTable(tableInfo.FullTempTableName));
                    }
                }
            }
            // -- Sqlite --
            else if (providerName.EndsWith(DbServer.Sqlite.ToString()))
            {
                throw new NotImplementedException();
            }
            else
            {
                throw new SqlProviderNotSupportedException(providerName);
            }
        }
示例#3
0
        public static void Insert <T>(DbContext context, IList <T> entities, TableInfo tableInfo, Action <decimal> progress)
        {
            string providerName = context.Database.ProviderName; // "Microsoft.EntityFrameworkCore.*****"

            // -- SQL Server --
            if (providerName.EndsWith(DbServer.SqlServer.ToString()))
            {
                var connection  = OpenAndGetSqlConnection(context, tableInfo.BulkConfig);
                var transaction = context.Database.CurrentTransaction;
                try
                {
                    using (var sqlBulkCopy = GetSqlBulkCopy((SqlConnection)connection, transaction, tableInfo.BulkConfig))
                    {
                        bool useFastMember = tableInfo.HasOwnedTypes == false &&                   // With OwnedTypes DataTable is used since library FastMember can not (https://github.com/mgravell/fast-member/issues/21)
                                             tableInfo.ColumnNameContainsSquareBracket == false && // FastMember does not support escaped columnNames  ] -> ]]
                                             tableInfo.ShadowProperties.Count == 0 &&              // With Shadow prop. Discriminator (TPH inheritance) also not used because FastMember is slow for Update (https://github.com/borisdj/KhaoSat.Data.BulkExtensions/pull/17)
                                             !tableInfo.ConvertibleProperties.Any() &&             // With ConvertibleProperties FastMember is slow as well
                                             !tableInfo.HasAbstractList &&                         // AbstractList not working with FastMember
                                             !tableInfo.BulkConfig.UseOnlyDataTable;
                        bool setColumnMapping = useFastMember;
                        tableInfo.SetSqlBulkCopyConfig(sqlBulkCopy, entities, setColumnMapping, progress);
                        try
                        {
                            if (useFastMember)
                            {
                                using (var reader = ObjectReaderEx.Create(entities, tableInfo.ShadowProperties, tableInfo.ConvertibleProperties, context, tableInfo.PropertyColumnNamesDict.Keys.ToArray()))
                                {
                                    sqlBulkCopy.WriteToServer(reader);
                                }
                            }
                            else
                            {
                                var dataTable = GetDataTable <T>(context, entities, sqlBulkCopy, tableInfo);
                                sqlBulkCopy.WriteToServer(dataTable);
                            }
                        }
                        catch (InvalidOperationException ex)
                        {
                            if (ex.Message.Contains(ColumnMappingExceptionMessage))
                            {
                                if (!tableInfo.CheckTableExist(context, tableInfo))
                                {
                                    context.Database.ExecuteSqlRaw(SqlQueryBuilder.CreateTableCopy(tableInfo.FullTableName, tableInfo.FullTempTableName, tableInfo)); // Will throw Exception specify missing db column: Invalid column name ''
                                    context.Database.ExecuteSqlRaw(SqlQueryBuilder.DropTable(tableInfo.FullTempTableName));
                                }
                            }
                            throw ex;
                        }
                    }
                }
                finally
                {
                    if (transaction == null)
                    {
                        connection.Close();
                    }
                }
            }
            // -- SQLite --
            else if (providerName.EndsWith(DbServer.Sqlite.ToString()))
            {
                var connection  = OpenAndGetSqliteConnection(context, tableInfo.BulkConfig);
                var transaction = tableInfo.BulkConfig.SqliteTransaction ?? connection.BeginTransaction();
                try
                {
                    var command = GetSqliteCommand(context, entities, tableInfo, connection, transaction);

                    var typeAccessor = TypeAccessor.Create(typeof(T), true);
                    int rowsCopied   = 0;
                    foreach (var item in entities)
                    {
                        LoadSqliteValues(tableInfo, typeAccessor, item, command);
                        command.ExecuteNonQuery();
                        SetProgress(ref rowsCopied, entities.Count, tableInfo.BulkConfig, progress);
                    }
                }
                finally
                {
                    if (tableInfo.BulkConfig.SqliteTransaction == null)
                    {
                        transaction.Commit();
                        transaction.Dispose();
                    }
                    if (tableInfo.BulkConfig.SqliteConnection == null)
                    {
                        connection.Close();
                    }
                }
            }
            else
            {
                throw new SqlProviderNotSupportedException(providerName);
            }
        }
示例#4
0
        public static async Task MergeAsync <T>(DbContext context, IList <T> entities, TableInfo tableInfo, OperationType operationType, Action <decimal> progress, CancellationToken cancellationToken) where T : class
        {
            string providerName = context.Database.ProviderName;

            // -- SQL Server --
            if (providerName.EndsWith(DbServer.SqlServer.ToString()))
            {
                tableInfo.InsertToTempTable = true;
                await tableInfo.CheckHasIdentityAsync(context, cancellationToken).ConfigureAwait(false);

                await context.Database.ExecuteSqlRawAsync(SqlQueryBuilder.CreateTableCopy(tableInfo.FullTableName, tableInfo.FullTempTableName, tableInfo), cancellationToken).ConfigureAwait(false);

                if (tableInfo.CreatedOutputTable)
                {
                    await context.Database.ExecuteSqlRawAsync(SqlQueryBuilder.CreateTableCopy(tableInfo.FullTableName, tableInfo.FullTempOutputTableName, tableInfo, true), cancellationToken).ConfigureAwait(false);

                    if (tableInfo.TimeStampColumnName != null)
                    {
                        await context.Database.ExecuteSqlRawAsync(SqlQueryBuilder.AddColumn(tableInfo.FullTempOutputTableName, tableInfo.TimeStampColumnName, tableInfo.TimeStampOutColumnType), cancellationToken).ConfigureAwait(false);
                    }
                }

                bool keepIdentity = tableInfo.BulkConfig.SqlBulkCopyOptions.HasFlag(SqlBulkCopyOptions.KeepIdentity);
                try
                {
                    await InsertAsync(context, entities, tableInfo, progress, cancellationToken).ConfigureAwait(false);

                    if (keepIdentity && tableInfo.HasIdentity)
                    {
                        await context.Database.OpenConnectionAsync(cancellationToken).ConfigureAwait(false);

                        await context.Database.ExecuteSqlRawAsync(SqlQueryBuilder.SetIdentityInsert(tableInfo.FullTableName, true), cancellationToken).ConfigureAwait(false);
                    }

                    await context.Database.ExecuteSqlRawAsync(SqlQueryBuilder.MergeTable(tableInfo, operationType), cancellationToken).ConfigureAwait(false);

                    if (tableInfo.CreatedOutputTable)
                    {
                        await tableInfo.LoadOutputDataAsync(context, entities, cancellationToken).ConfigureAwait(false);
                    }
                }
                finally
                {
                    if (!tableInfo.BulkConfig.UseTempDB)
                    {
                        if (tableInfo.CreatedOutputTable)
                        {
                            await context.Database.ExecuteSqlRawAsync(SqlQueryBuilder.DropTable(tableInfo.FullTempOutputTableName), cancellationToken).ConfigureAwait(false);
                        }
                        await context.Database.ExecuteSqlRawAsync(SqlQueryBuilder.DropTable(tableInfo.FullTempTableName), cancellationToken).ConfigureAwait(false);
                    }

                    if (keepIdentity && tableInfo.HasIdentity)
                    {
                        await context.Database.ExecuteSqlRawAsync(SqlQueryBuilder.SetIdentityInsert(tableInfo.FullTableName, false), cancellationToken).ConfigureAwait(false);

                        context.Database.CloseConnection();
                    }
                }
            }
            // -- SQLite --
            else if (providerName.EndsWith(DbServer.Sqlite.ToString()))
            {
                var connection = await OpenAndGetSqliteConnectionAsync(context, tableInfo.BulkConfig, cancellationToken).ConfigureAwait(false);

                var transaction = tableInfo.BulkConfig.SqliteTransaction ?? connection.BeginTransaction();
                try
                {
                    var command = GetSqliteCommand(context, entities, tableInfo, connection, transaction);

                    var typeAccessor = TypeAccessor.Create(typeof(T), true);
                    int rowsCopied   = 0;
                    foreach (var item in entities)
                    {
                        LoadSqliteValues(tableInfo, typeAccessor, item, command);
                        await command.ExecuteNonQueryAsync(cancellationToken).ConfigureAwait(false);

                        SetProgress(ref rowsCopied, entities.Count, tableInfo.BulkConfig, progress);
                    }

                    if (operationType != OperationType.Delete && tableInfo.BulkConfig.SetOutputIdentity && tableInfo.IdentityColumnName != null)
                    {
                        command.CommandText = SqlQueryBuilderSqlite.SelectLastInsertRowId();
                        long lastRowIdScalar = (long)await command.ExecuteScalarAsync(cancellationToken).ConfigureAwait(false);

                        int    lastRowId            = (int)lastRowIdScalar;
                        var    accessor             = TypeAccessor.Create(typeof(T), true);
                        string identityPropertyName = tableInfo.PropertyColumnNamesDict.SingleOrDefault(a => a.Value == tableInfo.IdentityColumnName).Key;
                        for (int i = entities.Count - 1; i >= 0; i--)
                        {
                            accessor[entities[i], identityPropertyName] = lastRowId;
                            lastRowId--;
                        }
                    }
                }
                finally
                {
                    if (tableInfo.BulkConfig.SqliteTransaction == null)
                    {
                        transaction.Commit();
                        transaction.Dispose();
                    }
                    if (tableInfo.BulkConfig.SqliteConnection == null)
                    {
                        connection.Close();
                    }
                }
            }
            else
            {
                throw new SqlProviderNotSupportedException(providerName);
            }
        }
示例#5
0
        public static async Task InsertAsync <T>(DbContext context, IList <T> entities, TableInfo tableInfo, Action <decimal> progress, CancellationToken cancellationToken)
        {
            string providerName = context.Database.ProviderName; // "Microsoft.EntityFrameworkCore.*****"

            // -- SQL Server --
            if (providerName.EndsWith(DbServer.SqlServer.ToString()))
            {
                var connection = await OpenAndGetSqlConnectionAsync(context, tableInfo.BulkConfig, cancellationToken).ConfigureAwait(false);

                var transaction = context.Database.CurrentTransaction;
                try
                {
                    using (var sqlBulkCopy = GetSqlBulkCopy((SqlConnection)connection, transaction, tableInfo.BulkConfig))
                    {
                        bool useFastMember = tableInfo.HasOwnedTypes == false &&
                                             tableInfo.ColumnNameContainsSquareBracket == false &&
                                             tableInfo.ShadowProperties.Count == 0 &&
                                             !tableInfo.ConvertibleProperties.Any() &&
                                             !tableInfo.HasAbstractList &&
                                             !tableInfo.BulkConfig.UseOnlyDataTable;
                        bool setColumnMapping = useFastMember;
                        tableInfo.SetSqlBulkCopyConfig(sqlBulkCopy, entities, setColumnMapping, progress);
                        try
                        {
                            if (useFastMember)
                            {
                                using (var reader = ObjectReaderEx.Create(entities, tableInfo.ShadowProperties, tableInfo.ConvertibleProperties, context, tableInfo.PropertyColumnNamesDict.Keys.ToArray()))
                                {
                                    await sqlBulkCopy.WriteToServerAsync(reader, cancellationToken).ConfigureAwait(false);
                                }
                            }
                            else
                            {
                                var dataTable = GetDataTable <T>(context, entities, sqlBulkCopy, tableInfo);
                                await sqlBulkCopy.WriteToServerAsync(dataTable, cancellationToken).ConfigureAwait(false);
                            }
                        }
                        catch (InvalidOperationException ex)
                        {
                            if (ex.Message.Contains(ColumnMappingExceptionMessage))
                            {
                                if (!await tableInfo.CheckTableExistAsync(context, tableInfo, cancellationToken).ConfigureAwait(false))
                                {
                                    await context.Database.ExecuteSqlRawAsync(SqlQueryBuilder.CreateTableCopy(tableInfo.FullTableName, tableInfo.FullTempTableName, tableInfo), cancellationToken).ConfigureAwait(false);

                                    await context.Database.ExecuteSqlRawAsync(SqlQueryBuilder.DropTable(tableInfo.FullTempTableName), cancellationToken).ConfigureAwait(false);
                                }
                            }
                            throw ex;
                        }
                    }
                }
                finally
                {
                    if (transaction == null)
                    {
                        connection.Close();
                    }
                }
            }
            // -- SQLite --
            else if (providerName.EndsWith(DbServer.Sqlite.ToString()))
            {
                var connection = await OpenAndGetSqliteConnectionAsync(context, tableInfo.BulkConfig, cancellationToken).ConfigureAwait(false);

                var transaction = tableInfo.BulkConfig.SqliteTransaction ?? connection.BeginTransaction();
                try
                {
                    var command = GetSqliteCommand(context, entities, tableInfo, connection, transaction);

                    var typeAccessor = TypeAccessor.Create(typeof(T), true);
                    int rowsCopied   = 0;
                    foreach (var item in entities)
                    {
                        LoadSqliteValues(tableInfo, typeAccessor, item, command);
                        await command.ExecuteNonQueryAsync(cancellationToken).ConfigureAwait(false);

                        SetProgress(ref rowsCopied, entities.Count, tableInfo.BulkConfig, progress);
                    }
                }
                finally
                {
                    if (tableInfo.BulkConfig.SqliteTransaction == null)
                    {
                        transaction.Commit();
                        transaction.Dispose();
                    }
                    if (tableInfo.BulkConfig.SqliteConnection == null)
                    {
                        connection.Close();
                    }
                }
            }
            else
            {
                throw new SqlProviderNotSupportedException(providerName);
            }
        }