public static async Task InsertAsync <T>(DbContext context, IList <T> entities, TableInfo tableInfo, Action <decimal> progress)
{
var sqlConnection = await OpenAndGetSqlConnectionAsync(context, tableInfo.BulkConfig);
var transaction = context.Database.CurrentTransaction;
try
{
using (var sqlBulkCopy = GetSqlBulkCopy(sqlConnection, transaction, tableInfo.BulkConfig))
{
bool useFastMember = tableInfo.HasOwnedTypes == false &&
tableInfo.ShadowProperties.Count == 0 &&
tableInfo.ColumnNameContainsSquareBracket == false;
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).ConfigureAwait(false);
}
}
else
{
var dataTable = GetDataTable <T>(context, entities, sqlBulkCopy, tableInfo);
await sqlBulkCopy.WriteToServerAsync(dataTable);
}
}
catch (InvalidOperationException ex)
{
if (!tableInfo.BulkConfig.UseTempDB)
{
await context.Database.ExecuteSqlCommandAsync(SqlQueryBuilder.DropTable(tableInfo.FullTempOutputTableName));
}
if (ex.Message.Contains(ColumnMappingExceptionMessage))
{
if (!await tableInfo.CheckTableExistAsync(context, tableInfo))
{
await context.Database.ExecuteSqlCommandAsync(SqlQueryBuilder.CreateTableCopy(tableInfo.FullTableName, tableInfo.FullTempTableName, tableInfo));
await context.Database.ExecuteSqlCommandAsync(SqlQueryBuilder.DropTable(tableInfo.FullTempTableName));
}
}
throw ex;
}
}
}
finally
{
if (transaction == null)
{
sqlConnection.Close();
}
}
}
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);
}
}