/// <summary>
/// Bulk insert an instance of <see cref="DataTable"/> object into the database in an asynchronous way.
/// </summary>
/// <param name="connection">The connection object to be used.</param>
/// <param name="tableName">The target table for bulk-insert operation.</param>
/// <param name="dataTable">The <see cref="DataTable"/> object to be used in the bulk-insert operation.</param>
/// <param name="rowState">The state of the rows to be copied to the destination.</param>
/// <param name="mappings">The list of the columns to be used for mappings. If this parameter is not set, then all columns will be used for mapping.</param>
/// <param name="options">The bulk-copy options to be used.</param>
/// <param name="bulkCopyTimeout">The timeout in seconds to be used.</param>
/// <param name="batchSize">The size per batch to be used.</param>
/// <param name="transaction">The transaction to be used.</param>
/// <returns>The number of rows affected by the execution.</returns>
internal static async Task <int> BulkInsertAsyncInternal(SqlConnection connection,
string tableName,
DataTable dataTable,
DataRowState rowState = DataRowState.Unchanged,
IEnumerable <BulkInsertMapItem> mappings = null,
SqlBulkCopyOptions options = SqlBulkCopyOptions.Default,
int?bulkCopyTimeout = null,
int?batchSize = null,
SqlTransaction transaction = null)
{
// Validate the objects
DbConnectionExtension.ValidateTransactionConnectionObject(connection, transaction);
// Variables for the operation
var result = 0;
// Before Execution Time
var beforeExecutionTime = DateTime.UtcNow;
// Actual Execution
using (var sqlBulkCopy = new SqlBulkCopy(connection, options, transaction))
{
// Set the destinationtable
sqlBulkCopy.DestinationTableName = tableName;
// Set the timeout
if (bulkCopyTimeout != null && bulkCopyTimeout.HasValue)
{
sqlBulkCopy.BulkCopyTimeout = bulkCopyTimeout.Value;
}
// Set the batch szie
if (batchSize != null && batchSize.HasValue)
{
sqlBulkCopy.BatchSize = batchSize.Value;
}
// Add the mappings
if (mappings == null)
{
// Variables needed
var dbSetting = connection.GetDbSetting();
var dbFields = await DbFieldCache.GetAsync(connection, tableName, transaction);
var fields = GetDataColumns(dataTable).Select(column => column.ColumnName);
var filteredFields = new List <Tuple <string, string> >();
// To fix the casing problem of the bulk inserts
foreach (var dbField in dbFields)
{
var field = fields.FirstOrDefault(f =>
string.Equals(f.AsUnquoted(true, dbSetting), dbField.Name.AsUnquoted(true, dbSetting), StringComparison.OrdinalIgnoreCase));
if (field != null)
{
filteredFields.Add(new Tuple <string, string>(field, dbField.Name.AsUnquoted(true, dbSetting)));
}
}
// Iterate the filtered fields
foreach (var field in filteredFields)
{
sqlBulkCopy.ColumnMappings.Add(field.Item1, field.Item2);
}
}
else
{
// Iterate the provided mappings
foreach (var mapItem in mappings)
{
sqlBulkCopy.ColumnMappings.Add(mapItem.SourceColumn, mapItem.DestinationColumn);
}
}
// Open the connection and do the operation
connection.EnsureOpen();
await sqlBulkCopy.WriteToServerAsync(dataTable, rowState);
// Set the return value
result = GetDataRows(dataTable, rowState).Count();
}
// Result
return(result);
}
/// <summary>
/// Bulk insert an instance of <see cref="DbDataReader"/> object into the database in an asynchronous way.
/// </summary>
/// <param name="connection">The connection object to be used.</param>
/// <param name="tableName">The target table for bulk-insert operation.</param>
/// <param name="reader">The <see cref="DbDataReader"/> object to be used in the bulk-insert operation.</param>
/// <param name="mappings">The list of the columns to be used for mappings. If this parameter is not set, then all columns will be used for mapping.</param>
/// <param name="options">The bulk-copy options to be used.</param>
/// <param name="bulkCopyTimeout">The timeout in seconds to be used.</param>
/// <param name="batchSize">The size per batch to be used.</param>
/// <param name="transaction">The transaction to be used.</param>
/// <returns>The number of rows affected by the execution.</returns>
internal static async Task <int> BulkInsertAsyncInternal(SqlConnection connection,
string tableName,
DbDataReader reader,
IEnumerable <BulkInsertMapItem> mappings = null,
SqlBulkCopyOptions options = SqlBulkCopyOptions.Default,
int?bulkCopyTimeout = null,
int?batchSize = null,
SqlTransaction transaction = null)
{
// Validate the objects
DbConnectionExtension.ValidateTransactionConnectionObject(connection, transaction);
// Variables for the operation
var result = 0;
// Before Execution Time
var beforeExecutionTime = DateTime.UtcNow;
// Actual Execution
using (var sqlBulkCopy = new SqlBulkCopy(connection, options, transaction))
{
// Set the destinationtable
sqlBulkCopy.DestinationTableName = tableName;
// Set the timeout
if (bulkCopyTimeout != null && bulkCopyTimeout.HasValue)
{
sqlBulkCopy.BulkCopyTimeout = bulkCopyTimeout.Value;
}
// Set the batch szie
if (batchSize != null && batchSize.HasValue)
{
sqlBulkCopy.BatchSize = batchSize.Value;
}
// Add the mappings
if (mappings == null)
{
// Variables needed
var dbSetting = connection.GetDbSetting();
var dbFields = await DbFieldCache.GetAsync(connection, tableName, transaction);
var fields = Enumerable.Range(0, reader.FieldCount).Select((index) => reader.GetName(index));
var filteredFields = new List <Tuple <string, string> >();
// To fix the casing problem of the bulk inserts
foreach (var dbField in dbFields)
{
var readerField = fields.FirstOrDefault(field =>
string.Equals(field.AsUnquoted(true, dbSetting), dbField.Name.AsUnquoted(true, dbSetting), StringComparison.OrdinalIgnoreCase));
if (!string.IsNullOrEmpty(readerField))
{
filteredFields.Add(new Tuple <string, string>(readerField, dbField.Name.AsUnquoted(true, dbSetting)));
}
}
// Iterate the filtered fields
foreach (var field in filteredFields)
{
sqlBulkCopy.ColumnMappings.Add(field.Item1, field.Item2);
}
}
else
{
// Iterate the provided mappings
foreach (var mapItem in mappings)
{
sqlBulkCopy.ColumnMappings.Add(mapItem.SourceColumn, mapItem.DestinationColumn);
}
}
// Open the connection and do the operation
await connection.EnsureOpenAsync();
await sqlBulkCopy.WriteToServerAsync(reader);
// Hack the 'SqlBulkCopy' object
var copiedField = GetRowsCopiedField();
// Set the return value
result = copiedField != null ? (int)copiedField.GetValue(sqlBulkCopy) : reader.RecordsAffected;
}
// Result
return(result);
}