/// <summary>
/// For __RepoDb_OrderColumn
/// </summary>
/// <param name="importer"></param>
/// <param name="identityBehavior"></param>
/// <param name="index"></param>
/// <param name="cancellationToken"></param>
private static async Task EnsureCustomizedOrderColumnAsync(NpgsqlBinaryImporter importer,
BulkImportIdentityBehavior identityBehavior,
int index,
CancellationToken cancellationToken = default)
{
if (identityBehavior == BulkImportIdentityBehavior.ReturnIdentity)
{
await importer.WriteAsync(index, NpgsqlDbType.Integer, cancellationToken);
}
}
/// <summary>
///
/// </summary>
/// <param name="importer"></param>
/// <param name="data"></param>
/// <param name="npgsqlDbType"></param>
/// <param name="cancellationToken"></param>
/// <returns></returns>
private static async Task BinaryImportWriteAsync(NpgsqlBinaryImporter importer,
object data,
NpgsqlDbType?npgsqlDbType,
CancellationToken cancellationToken = default)
{
if (data == null)
{
await importer.WriteNullAsync(cancellationToken);
}
else
{
if (npgsqlDbType != null)
{
await importer.WriteAsync(data, npgsqlDbType.Value, cancellationToken);
}
else
{
await importer.WriteAsync(data, cancellationToken);
}
}
}
public static async Task PerformBulkCopyAsync(this DbDataReader dr, NpgsqlBinaryImporter writer, DataColumnCollection columns = null)
{
columns ??= dr.GetSchemaTable().Columns;
while (await dr.ReadAsync())
{
await writer.StartRowAsync();
foreach (DataColumn col in columns)
{
switch (dr[col.Ordinal])
{
case bool x:
await writer.WriteAsync(x);
break;
case byte x:
await writer.WriteAsync(x);
break;
case sbyte x:
await writer.WriteAsync(x);
break;
case short x:
await writer.WriteAsync(x);
break;
case ushort x:
await writer.WriteAsync(x);
break;
case int x:
await writer.WriteAsync(x);
break;
case uint x:
await writer.WriteAsync(x);
break;
case long x:
await writer.WriteAsync(x);
break;
case ulong x:
await writer.WriteAsync(x);
break;
case Guid x:
await writer.WriteAsync(x);
break;
case DateTime x:
await writer.WriteAsync(x);
break;
case TimeSpan x:
await writer.WriteAsync(x);
break;
case string x:
await writer.WriteAsync(x);
break;
case null:
writer.WriteNull();
break;
}
}
}
await writer.CompleteAsync();
}