/// <summary>
/// Creates Avro Hearder Stream without zero block.
/// </summary>
/// <param name="dataList">the list of input data</param>
/// <param name="schema">The writer schema.</param>
/// <param name="settings">The serializer settings.</param>
/// <param name="codec">The codec.</param>
/// <returns> A writer.</returns>
/// <exception cref="System.ArgumentNullException">Thrown when any argument is null.</exception>
/// <returns>The first Tuple element is the stream with header, the second tuple element is the avro header</returns>
public static Tuple <Stream, ObjectContainerHeader> CreateAvroHeaderStream <TSchema>(TSchema t, string schema, AvroSerializerSettings settings, Codec codec, int syncNumberOfObjects)
{
ObjectContainerHeader avroHeader = null;
var stream = new MemoryStream();
using (var avroWriter = (StreamWriter <TSchema>)AvroContainer.CreateWriter <TSchema>(stream, true, settings, codec, false, null))
{
avroWriter.WriteHeader();
avroHeader = avroWriter.Header;
}
stream.Seek(0, SeekOrigin.Begin);
return(new Tuple <Stream, ObjectContainerHeader>(stream, avroHeader));
}
/// <summary>
/// Creates Avro Blocks stream.
/// </summary>
/// <param name="dataList">the list of input data</param>
/// <param name="schema">The writer schema.</param>
/// <param name="settings">The serializer settings.</param>
/// <param name="codec">The codec.</param>
/// <returns> A writer.</returns>
/// <exception cref="System.ArgumentNullException">Thrown when any argument is null.</exception>
/// <returns>The first Tuple element is the stream with header and blocks, the second tuple element is the avro header</returns>
public static Tuple <Stream, ObjectContainerHeader> CreateAvroHeaderAndBlockStream <TSchema>(List <TSchema> dataList, string schema, AvroSerializerSettings settings, Codec codec, int syncNumberOfObjects)
{
ObjectContainerHeader avroHeader = null;
var stream = new MemoryStream();
using (var avroWriter = (StreamWriter <TSchema>)AvroContainer.CreateWriter <TSchema>(stream, true, settings, codec, false, null))
{
avroHeader = avroWriter.Header;
using (var sequentialWriter = new SequentialWriter <TSchema>(avroWriter, syncNumberOfObjects))
{
dataList.ToList().ForEach(sequentialWriter.Write);
}
}
stream.Seek(0, SeekOrigin.Begin);
return(new Tuple <Stream, ObjectContainerHeader>(stream, avroHeader));
}
