internal OutputRows(FrameReader reader, Guid?traceId)
{
_metadata = new RowSetMetadata(reader);
_rowLength = reader.ReadInt32();
TraceId = traceId;
RowSet = new RowSet();
ProcessRows(RowSet, reader);
}
protected override void Load(FrameReader reader)
{
_exception = new FunctionFailureException(Message)
{
Keyspace = reader.ReadString(),
Name = reader.ReadString(),
ArgumentTypes = reader.ReadStringList()
};
}
/// <summary>
/// Process rows and sets the paging event handler
/// </summary>
internal void ProcessRows(RowSet rs, FrameReader reader)
{
if (_metadata != null)
{
rs.Columns = _metadata.Columns;
rs.PagingState = _metadata.PagingState;
}
for (var i = 0; i < _rowLength; i++)
{
rs.AddRow(ProcessRowItem(reader));
}
}
internal OutputOptions(FrameReader reader)
{
_options = new Dictionary <string, string[]>();
int n = reader.ReadUInt16();
for (var i = 0; i < n; i++)
{
var k = reader.ReadString();
var v = reader.ReadStringList();
_options.Add(k, v);
}
}
internal static OutputError CreateOutputError(int code, string message, FrameReader cb)
{
Func <OutputError> factoryMethod;
if (OutputErrorFactoryMethods.TryGetValue(code, out factoryMethod) == false)
{
throw new DriverInternalError(string.Format("Received unknown error with code {0} and message {1}", code, message));
}
var error = factoryMethod();
error.Message = message;
error.Code = code;
error.Load(cb);
return(error);
}
internal virtual Row ProcessRowItem(FrameReader reader)
{
var rowValues = new object[_metadata.Columns.Length];
for (var i = 0; i < _metadata.Columns.Length; i++)
{
var c = _metadata.Columns[i];
var length = reader.ReadInt32();
if (length < 0)
{
rowValues[i] = null;
continue;
}
var buffer = GetBuffer(length, c.TypeCode);
rowValues[i] = reader.ReadFromBytes(buffer, 0, length, c.TypeCode, c.TypeInfo);
}
return(new Row(rowValues, _metadata.Columns, _metadata.ColumnIndexes));
}
private IColumnInfo GetColumnInfo(FrameReader reader, ColumnTypeCode code)
{
ColumnTypeCode innercode;
switch (code)
{
case ColumnTypeCode.List:
innercode = (ColumnTypeCode)reader.ReadUInt16();
return(new ListColumnInfo
{
ValueTypeCode = innercode,
ValueTypeInfo = GetColumnInfo(reader, innercode)
});
case ColumnTypeCode.Map:
innercode = (ColumnTypeCode)reader.ReadUInt16();
IColumnInfo kci = GetColumnInfo(reader, innercode);
var vinnercode = (ColumnTypeCode)reader.ReadUInt16();
IColumnInfo vci = GetColumnInfo(reader, vinnercode);
return(new MapColumnInfo
{
KeyTypeCode = innercode,
KeyTypeInfo = kci,
ValueTypeCode = vinnercode,
ValueTypeInfo = vci
});
case ColumnTypeCode.Set:
innercode = (ColumnTypeCode)reader.ReadUInt16();
return(new SetColumnInfo
{
KeyTypeCode = innercode,
KeyTypeInfo = GetColumnInfo(reader, innercode)
});
case ColumnTypeCode.Custom:
return(new CustomColumnInfo {
CustomTypeName = reader.ReadString()
});
case ColumnTypeCode.Udt:
var udtInfo = new UdtColumnInfo(reader.ReadString() + "." + reader.ReadString());
var fieldLength = reader.ReadInt16();
for (var i = 0; i < fieldLength; i++)
{
var dataType = new ColumnDesc
{
Name = reader.ReadString(),
TypeCode = (ColumnTypeCode)reader.ReadUInt16(),
};
dataType.TypeInfo = GetColumnInfo(reader, dataType.TypeCode);
udtInfo.Fields.Add(dataType);
}
return(udtInfo);
case ColumnTypeCode.Tuple:
{
var tupleInfo = new TupleColumnInfo();
var elementLength = reader.ReadInt16();
for (var i = 0; i < elementLength; i++)
{
var dataType = new ColumnDesc
{
TypeCode = (ColumnTypeCode)reader.ReadUInt16(),
};
dataType.TypeInfo = GetColumnInfo(reader, dataType.TypeCode);
tupleInfo.Elements.Add(dataType);
}
return(tupleInfo);
}
default:
return(null);
}
}
internal RowSetMetadata(FrameReader reader, bool parsePartitionKeys = false)
{
if (reader == null)
{
//Allow to be created for unit tests
return;
}
var flags = (RowSetMetadataFlags)reader.ReadInt32();
var columnLength = reader.ReadInt32();
if (parsePartitionKeys)
{
PartitionKeys = new int[reader.ReadInt32()];
for (var i = 0; i < PartitionKeys.Length; i++)
{
PartitionKeys[i] = reader.ReadInt16();
}
}
string gKsname = null;
string gTablename = null;
if ((flags & RowSetMetadataFlags.HasMorePages) == RowSetMetadataFlags.HasMorePages)
{
PagingState = reader.ReadBytes();
}
if ((flags & RowSetMetadataFlags.NoMetadata) == RowSetMetadataFlags.NoMetadata)
{
return;
}
if ((flags & RowSetMetadataFlags.GlobalTablesSpec) == RowSetMetadataFlags.GlobalTablesSpec)
{
gKsname = reader.ReadString();
gTablename = reader.ReadString();
}
Columns = new CqlColumn[columnLength];
ColumnIndexes = new Dictionary <string, int>(columnLength);
for (var i = 0; i < columnLength; i++)
{
var col = new CqlColumn {
Index = i
};
if ((flags & RowSetMetadataFlags.GlobalTablesSpec) == 0)
{
col.Keyspace = reader.ReadString();
col.Table = reader.ReadString();
}
else
{
col.Keyspace = gKsname;
col.Table = gTablename;
}
col.Name = reader.ReadString();
col.TypeCode = (ColumnTypeCode)reader.ReadUInt16();
col.TypeInfo = GetColumnInfo(reader, col.TypeCode);
col.Type = reader.Serializer.GetClrType(col.TypeCode, col.TypeInfo);
Columns[i] = col;
ColumnIndexes[col.Name] = i;
}
Keyspace = gKsname ?? (columnLength > 0 ? Columns[0].Keyspace : null);
}
protected abstract void Load(FrameReader reader);