public ColumnData(DbType dbType, IUnmanagedAllocator allocator)
: base(allocator)
{
m_dbType = dbType;
DataArray = new ExpandableArray <T>(1, typeof(T).IsValueType ? DriverRowData.GetByteCount(dbType) : IntPtr.Size);
AssignFromDriverRow = GenerateAssignFromDriverRowAction();
AssignToDriverRow = GenerateAssignToDriverRowAction();
WriteData = GenerateWriteDataAction();
ReadData = GenerateReadDataAction();
}
public ColumnData(ColumnDataBase source, IUnmanagedAllocator allocator)
: base(source, allocator)
{
var typed = (ColumnData <T>)source;
m_dbType = typed.DbType;
DataArray = typed.DataArray;
AssignFromDriverRow = typed.AssignFromDriverRow;
AssignToDriverRow = typed.AssignToDriverRow;
WriteData = typed.WriteData;
ReadData = typed.ReadData;
}
private static void ReadBitVectorFromStore(BinaryReader reader, ExpandableArray <int> bitVectorData, int count)
{
var readSoFar = 0;
bitVectorData.EnsureCapacity(count);
const int elementsPerItem = 32;
while (count > 0)
{
var block = bitVectorData.GetBlock(readSoFar);
for (var i = 0; count > 0 && i < block.Length; i++, count -= elementsPerItem)
{
block[i] = reader.ReadInt32();
}
readSoFar += bitVectorData.ElementsPerBlock;
}
}
public ItemComparer(BitVector notNulls, ExpandableArray <TUnderlyingValue> data, IComparer <TUnderlyingValue> valueComparer)
{
if (notNulls == null)
{
throw new ArgumentNullException("notNulls");
}
if (data == null)
{
throw new ArgumentNullException("data");
}
if (valueComparer == null)
{
throw new ArgumentNullException("valueComparer");
}
m_notNulls = notNulls;
m_data = data;
m_valueComparer = valueComparer;
}