//private:
void Connect()
{
const int BUFFER_SIZE = 4096;
if (m_dpCount == 0)
{
bool connected = false;
try
{
m_dataFile = new System.IO.FileStream(FilePath,
System.IO.FileMode.Open,
System.IO.FileAccess.ReadWrite,
System.IO.FileShare.Read,
BUFFER_SIZE,
System.IO.FileOptions.RandomAccess);
Reader = new SeekableReader(m_dataFile);
Writer = new SeekableWriter(m_dataFile);
Header.Read(Reader);
Init();
connected = true;
}
catch (System.IO.FileNotFoundException)
{
System.Diagnostics.Debug.WriteLine("Try to create the file {0}.", FilePath);
m_dataFile = new System.IO.FileStream(FilePath,
System.IO.FileMode.CreateNew,
System.IO.FileAccess.ReadWrite,
System.IO.FileShare.Read,
BUFFER_SIZE,
System.IO.FileOptions.RandomAccess);
Header.Reset();
Header.CreationTime = DateTime.Now;
Writer = new SeekableWriter(m_dataFile);
Reader = new SeekableReader(m_dataFile);
Header.Write(Writer);
Init();
connected = true;
}
finally
{
if (!connected)
{
m_dataFile?.Dispose();
m_dataFile = null;
Reader = null;
Writer = null;
}
}
}
++m_dpCount;
Assert(IsConnected);
}
public FramedTable(uint id, string filePath) : //nothrow
base(id, filePath)
{
m_header = new TableHeader();
m_wrBuffer = new byte[DatumSize];
var ms = new MemoryStream(m_wrBuffer);
m_buffWriter = new SeekableWriter(ms);
}
