public static IChunkDownloader GetDownloader(QueryExecResponseData responseData,
SFBaseResultSet resultSet,
CancellationToken cancellationToken)
{
if (SFConfiguration.Instance().UseV2ChunkDownloader)
{
SFConfiguration.Instance().ChunkDownloaderVersion = 2;
}
switch (SFConfiguration.Instance().ChunkDownloaderVersion)
{
case 1:
return(new SFBlockingChunkDownloader(responseData.rowType.Count,
responseData.chunks,
responseData.qrmk,
responseData.chunkHeaders,
cancellationToken,
resultSet));
case 2:
return(new SFChunkDownloaderV2(responseData.rowType.Count,
responseData.chunks,
responseData.qrmk,
responseData.chunkHeaders,
cancellationToken));
default:
return(new SFBlockingChunkDownloaderV3(responseData.rowType.Count,
responseData.chunks,
responseData.qrmk,
responseData.chunkHeaders,
cancellationToken,
resultSet));
}
}
public static IChunkParser GetParser(Stream stream)
{
if (!SFConfiguration.Instance().UseV2JsonParser)
{
return(new ChunkDeserializer(stream));
}
else
{
return(new ChunkStreamingParser(stream));
}
}
public void TestUseV2ChunkDownloader()
{
SFConfiguration.Instance().UseV2ChunkDownloader = true;
using (IDbConnection conn = new SnowflakeDbConnection())
{
conn.ConnectionString = ConnectionString;
conn.Open();
IDbCommand cmd = conn.CreateCommand();
cmd.CommandText = "select seq4(), uniform(1, 10, 42) from table(generator(rowcount => 200000)) v order by 1";
IDataReader reader = cmd.ExecuteReader();
int counter = 0;
while (reader.Read())
{
Assert.AreEqual(counter.ToString(), reader.GetString(0));
counter++;
}
conn.Close();
}
}
public static IChunkDownloader GetDownloader(QueryExecResponseData responseData,
SFBaseResultSet resultSet,
CancellationToken cancellationToken)
{
if (SFConfiguration.Instance().UseV2ChunkDownloader)
{
return(new SFChunkDownloaderV2(responseData.rowType.Count,
responseData.chunks,
responseData.qrmk,
responseData.chunkHeaders,
cancellationToken));
}
else
{
return(new SFBlockingChunkDownloader(responseData.rowType.Count,
responseData.chunks,
responseData.qrmk,
responseData.chunkHeaders,
cancellationToken,
resultSet));
}
}