private bool UpdatePartitionGetIsNull(int partitionID, long localRowID, int nullIndex)
{
_lastPartitionReader = _tx.Read(partitionID);
_lastPartitionID = partitionID;
byte[] bitset = ((IBitsetColumn)_lastPartitionReader.ReadColumn(_bitSetColIndex))
.GetValue(localRowID, _tx.ReadCache);
return(new ByteArray(bitset).IsSet(nullIndex));
}
public bool IsMatch(IPartitionReader partition, ReadContext readCache, long localRowID)
{
if (_columnPartition != partition.PartitionID)
{
_columnPartition = partition.PartitionID;
_columnReader = (ITypedColumn <T>)partition.ReadColumn(_column.ColumnID);
}
var value = _columnReader.Get(localRowID, readCache);
return(IsMatch(value));
}
public T?GetNullable <T>(long rowId, int columnIndex) where T : struct
{
int partitionID = RowIDUtil.ToPartitionIndex(rowId);
long localRowID = RowIDUtil.ToLocalRowID(rowId);
if (_columnMaps != null)
{
columnIndex = _columnMaps[columnIndex];
}
var nullable = _metadata.GetColumnByID(columnIndex).Nullable;
var nullIndex = _metadata.GetColumnByID(columnIndex).NullIndex;
if (nullable && _bitSetColIndex != -1)
{
if (partitionID == _lastPartitionID)
{
byte[] bitset = ((IBitsetColumn)_lastPartitionReader.ReadColumn(_bitSetColIndex))
.GetValue(localRowID, _tx.ReadCache);
if (new ByteArray(bitset).IsSet(nullIndex))
{
return(default(T?));
}
}
else if (UpdatePartitionGetIsNull(partitionID, localRowID, nullIndex))
{
return(default(T?));
}
}
if (partitionID == _lastPartitionID)
{
return(((ITypedColumn <T>)_lastPartitionReader.ReadColumn(columnIndex)).Get(localRowID, _tx.ReadCache));
}
return(UpdatePartition <T>(partitionID, localRowID, columnIndex));
}
private T UpdatePartition <T>(int partitionID, long localRowID, int columnIndex)
{
_lastPartitionReader = _tx.Read(partitionID);
_lastPartitionID = partitionID;
return(((ITypedColumn <T>)_lastPartitionReader.ReadColumn(columnIndex)).Get(localRowID, _tx.ReadCache));
}
