private void Initialize()
{
_heap = new Heap(_node, _reader);
var tableHeader = _heap[_heap.UserRoot];
_numColumns = tableHeader[1];
_columnOffsets = new TcColumnOffsets(
tableHeader.ToInt16(2),
tableHeader.ToInt16(4),
tableHeader.ToInt16(6),
tableHeader.ToInt16(8));
var rowIndexHid = tableHeader.ToUInt32(10);
_rowIndex = new BTree <uint, uint>(
_heap,
rowIndexHid,
s => s.ToUInt32(),
s => s.ToUInt32(4));
var rowDataHnid = tableHeader.ToUInt32(14);
if (rowDataHnid != 0)
{
if ((rowDataHnid & 0x1f) == 0)
{
_rowData = _heap[rowDataHnid];
}
else
{
var subnode = _node.FindSubnode(rowDataHnid);
var dataStream = subnode.GetDataStream();
_rowData = new BinaryReader(dataStream).ReadBytes((int)dataStream.Length);
}
}
_columnDefs = new TcColumnDef[_numColumns];
for (var i = 0; i < _numColumns; i++)
{
var offsetBase = 22 + (i * 8);
var tagType = tableHeader.ToUInt16(offsetBase);
var tagKey = tableHeader.ToUInt16(offsetBase + 2);
var dataOffset = tableHeader.ToUInt16(offsetBase + 4);
var dataLength = tableHeader[offsetBase + 6];
var cebIndex = tableHeader[offsetBase + 7];
var def = new TcColumnDef
{
Tag = new ColumnTag
{
Type = (PropertyType)tagType,
Key = (PropertyKey)tagKey
},
Offset = dataOffset,
Size = dataLength,
CebIndex = cebIndex
};
_columnDefs[i] = def;
}
}
internal TcRow(
int rowIndex,
TcColumnOffsets offsets,
TcColumnDef[] columnDefs,
Segment<byte> rowData,
Heap heap,
Node node,
IPstReader reader)
{
_rowIndex = rowIndex;
_offsets = offsets;
_columnDefs = columnDefs;
_rowData = rowData;
_heap = heap;
_node = node;
_reader = reader;
}
private void Initialize()
{
var block = _reader.FindBlock(_node.DataBid);
_heap = new Heap(block);
var tableHeader = _heap[_heap.UserRoot];
_numColumns = tableHeader[1];
_columnOffsets = new TcColumnOffsets(
BitConverter.ToInt16(tableHeader.Array, tableHeader.Offset + 2),
BitConverter.ToInt16(tableHeader.Array, tableHeader.Offset + 4),
BitConverter.ToInt16(tableHeader.Array, tableHeader.Offset + 6),
BitConverter.ToInt16(tableHeader.Array, tableHeader.Offset + 8));
var rowIndexHid = BitConverter.ToUInt32(tableHeader.Array, tableHeader.Offset + 10);
_rowIndex = new BTree<uint, uint>(
_heap,
rowIndexHid,
s => BitConverter.ToUInt32(s.Array, s.Offset),
s => BitConverter.ToUInt32(s.Array, s.Offset + 4));
var rowDataHnid = BitConverter.ToUInt32(tableHeader.Array, tableHeader.Offset + 14);
if ((rowDataHnid & 0x1f) == 0)
{
_rowData = _heap[rowDataHnid];
}
else
{
var subnode = _node.FindSubnode(rowDataHnid);
var dataBlock = _reader.FindBlock(subnode.DataBid);
_rowData = dataBlock.Data;
}
_columnDefs = new TcColumnDef[_numColumns];
for (int i = 0; i < _numColumns; i++)
{
var offset = tableHeader.Offset + 22 + (i * 8);
var tagType = BitConverter.ToUInt16(tableHeader.Array, offset);
var tagKey = BitConverter.ToUInt16(tableHeader.Array, offset + 2);
var dataOffset = BitConverter.ToUInt16(tableHeader.Array, offset + 4);
var dataLength = tableHeader.Array[offset + 6];
var cebIndex = tableHeader.Array[offset + 7];
var def = new TcColumnDef
{
Tag = new ColumnTag
{
Type = (PropertyType)tagType,
Key = (PropertyKey)tagKey
},
Offset = dataOffset,
Size = dataLength,
CebIndex = cebIndex
};
_columnDefs[i] = def;
}
}