/// <summary>Deserializes a foreign table.</summary>
/// <remarks>
/// This can only deserialize rows written with layout. (Requires use of <see cref="Flags.WithLayout" /> when
/// serializing.)
/// </remarks>
/// <param name="reader">The reader to read from.</param>
/// <returns>The deserialized table instance.</returns>
public static ITable DeserializeForeignTable(this DataReader reader)
{
if (reader == null)
{
throw new ArgumentNullException(nameof(reader));
}
var flags = (Flags)reader.Read7BitEncodedInt32();
if ((flags & Flags.WithLayout) == 0)
{
throw new NotSupportedException(
"For DeserializeForeignX() functions the layout has to be written by the sender! The current decoded data does not contain a layout!");
}
var layout = RowLayout.Load(reader);
var result = MemoryTable.Create(layout);
var count = reader.Read7BitEncodedInt64();
for (long l = 0; l < count; l++)
{
var row = DeserializeData(reader, layout);
result.Insert(row);
}
return(result);
}
/// <summary>Deserializes a row.</summary>
/// <param name="reader">The reader.</param>
/// <param name="layout">The layout.</param>
/// <returns>The deserialized row.</returns>
public static Row DeserializeRow(this DataReader reader, RowLayout layout)
{
if (layout == null)
{
throw new ArgumentNullException(nameof(layout));
}
if (reader == null)
{
throw new ArgumentNullException(nameof(reader));
}
var flags = (Flags)reader.Read7BitEncodedInt32();
if ((flags & Flags.WithLayout) != 0)
{
var otherLayout = RowLayout.Load(reader);
RowLayout.CheckLayout(layout, otherLayout);
}
var count = reader.Read7BitEncodedInt32();
if (count != 1)
{
throw new InvalidDataException($"Got {count} Rows at the stream but want to read exactly one!");
}
return(DeserializeData(reader, layout));
}
/// <summary>Deserializes a foreign row.</summary>
/// <remarks>
/// This can only deserialize rows written with layout. (Requires use of <see cref="Flags.WithLayout" /> when
/// serializing.)
/// </remarks>
/// <param name="reader">The reader to read from.</param>
/// <returns>The deserialized row instance.</returns>
public static Row DeserializeForeignRow(this DataReader reader)
{
if (reader == null)
{
throw new ArgumentNullException(nameof(reader));
}
var flags = (Flags)reader.Read7BitEncodedInt32();
if ((flags & Flags.WithLayout) == 0)
{
throw new NotSupportedException(
"For DeserializeForeignX() functions the layout has to be written by the sender! The current decoded data does not contain a layout!");
}
var layout = RowLayout.Load(reader);
var count = reader.Read7BitEncodedInt32();
if (count != 1)
{
throw new InvalidDataException($"Got {count} Rows at the stream but want to read exactly one!");
}
return(DeserializeData(reader, layout));
}
/// <summary>Deserializes an item array.</summary>
/// <typeparam name="TStruct">Structure type.</typeparam>
/// <param name="reader">The reader.</param>
/// <returns>The deserialized structures.</returns>
/// <exception cref="ArgumentNullException">Reader.</exception>
public static TStruct[] DeserializeItems <TStruct>(this DataReader reader)
where TStruct : struct
{
if (reader == null)
{
throw new ArgumentNullException(nameof(reader));
}
var flags = (Flags)reader.Read7BitEncodedInt32();
var layout = RowLayout.CreateTyped(typeof(TStruct));
if ((flags & Flags.WithLayout) != 0)
{
var otherLayout = RowLayout.Load(reader);
RowLayout.CheckLayout(layout, otherLayout);
}
var results = new TStruct[reader.Read7BitEncodedInt32()];
for (var i = 0; i < results.Length; i++)
{
var row = DeserializeData(reader, layout);
results[i] = row.GetStruct <TStruct>(layout);
}
return(results);
}