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);
}
}
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);
}
}
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);
}
}
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);
}
}
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);
}
}