internal RowSetMetadata(BEBinaryReader reader)
{
var coldat = new List <ColumnDesc>();
var flags = (RowSetMetadataFlags)reader.ReadInt32();
int numberOfcolumns = reader.ReadInt32();
_rawColumns = new ColumnDesc[numberOfcolumns];
string gKsname = null;
string gTablename = null;
if ((flags & RowSetMetadataFlags.HasMorePages) == RowSetMetadataFlags.HasMorePages)
{
PagingState = reader.ReadBytes();
}
else
{
PagingState = null;
}
if ((flags & RowSetMetadataFlags.NoMetadata) != RowSetMetadataFlags.NoMetadata)
{
if ((flags & RowSetMetadataFlags.GlobalTablesSpec) == RowSetMetadataFlags.GlobalTablesSpec)
{
gKsname = reader.ReadString();
gTablename = reader.ReadString();
}
for (int i = 0; i < numberOfcolumns; i++)
{
var col = new ColumnDesc();
if ((flags & RowSetMetadataFlags.GlobalTablesSpec) != RowSetMetadataFlags.GlobalTablesSpec)
{
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);
coldat.Add(col);
}
_rawColumns = coldat.ToArray();
_columns = new CqlColumn[_rawColumns.Length];
ColumnIndexes = new Dictionary <string, int>();
for (int i = 0; i < _rawColumns.Length; i++)
{
_columns[i] = new CqlColumn
{
Name = _rawColumns[i].Name,
Keyspace = _rawColumns[i].Keyspace,
Table = _rawColumns[i].Table,
Type = TypeCodec.GetDefaultTypeFromCqlType(
_rawColumns[i].TypeCode,
_rawColumns[i].TypeInfo),
TypeCode = _rawColumns[i].TypeCode,
TypeInfo = _rawColumns[i].TypeInfo,
Index = i
};
//TODO: what with full long column names?
if (!ColumnIndexes.ContainsKey(_rawColumns[i].Name))
{
ColumnIndexes.Add(_rawColumns[i].Name, i);
}
}
}
}
/// <summary>
/// Handle conversions for some types that, for backward compatibility,
/// the result type can be more than 1 depending on the type provided by the user
/// </summary>
internal static object TryConvertToType(object value, ColumnDesc column, Type targetType)
{
if (value == null)
{
return(null);
}
switch (column.TypeCode)
{
case ColumnTypeCode.List:
{
//value is an array, according to TypeCodec
if (targetType.IsArray || targetType == typeof(object) || Utils.IsIEnumerable(targetType))
{
//Return the underlying array
return(value);
}
var childTypeInfo = (ListColumnInfo)column.TypeInfo;
return(Utils.ToCollectionType(typeof(List <>), TypeCodec.GetDefaultTypeFromCqlType(childTypeInfo.ValueTypeCode, childTypeInfo.ValueTypeInfo), (Array)value));
}
case ColumnTypeCode.Set:
{
//value is an array, according to TypeCodec
if (targetType.IsArray || targetType == typeof(object) || Utils.IsIEnumerable(targetType))
{
//Return the underlying array
return(value);
}
var childTypeInfo = (SetColumnInfo)column.TypeInfo;
var itemType = TypeCodec.GetDefaultTypeFromCqlType(childTypeInfo.KeyTypeCode, childTypeInfo.KeyTypeInfo);
if (targetType.IsGenericType)
{
var genericType = targetType.GetGenericTypeDefinition();
if (genericType == typeof(SortedSet <>))
{
return(Utils.ToCollectionType(typeof(SortedSet <>), itemType, (Array)value));
}
if (genericType == typeof(HashSet <>))
{
return(Utils.ToCollectionType(typeof(HashSet <>), itemType, (Array)value));
}
}
return(Utils.ToCollectionType(typeof(List <>), itemType, (Array)value));
}
case ColumnTypeCode.Timestamp:
//value is a DateTimeOffset
if (targetType == typeof(object) || targetType == typeof(DateTimeOffset))
{
return(value);
}
return(((DateTimeOffset)value).DateTime);
case ColumnTypeCode.Timeuuid:
//Value is a Uuid
if (targetType == typeof(TimeUuid))
{
return((TimeUuid)(Guid)value);
}
return(value);
default:
return(value);
}
}
internal RowSetMetadata(BEBinaryReader reader, bool parsePartitionKeys = false)
{
if (reader == null)
{
//Allow to be created for unit tests
return;
}
var coldat = new List <ColumnDesc>();
var flags = (RowSetMetadataFlags)reader.ReadInt32();
var numberOfcolumns = 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();
}
for (var i = 0; i < numberOfcolumns; i++)
{
var col = new ColumnDesc();
if ((flags & RowSetMetadataFlags.GlobalTablesSpec) != RowSetMetadataFlags.GlobalTablesSpec)
{
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);
coldat.Add(col);
}
var rawColumns = coldat.ToArray();
Columns = new CqlColumn[rawColumns.Length];
ColumnIndexes = new Dictionary <string, int>();
for (var i = 0; i < rawColumns.Length; i++)
{
Columns[i] = new CqlColumn
{
Name = rawColumns[i].Name,
Keyspace = rawColumns[i].Keyspace,
Table = rawColumns[i].Table,
Type = TypeCodec.GetDefaultTypeFromCqlType(
rawColumns[i].TypeCode,
rawColumns[i].TypeInfo),
TypeCode = rawColumns[i].TypeCode,
TypeInfo = rawColumns[i].TypeInfo,
Index = i
};
ColumnIndexes[rawColumns[i].Name] = i;
}
}
