protected new void UpdateHelper(IKey key, IValue value, bool IsAppend)
{
if (!value.GetType().Equals(typeof(ValType)))
{
throw new InvalidDataException("Invalid IValue Type");
}
long ts; // timestamp
// check if the entry is present, so that the old file can be deleted
IValue valueDataFilePathOld = base.Get(key);
ts = StreamFactory.HighResTick();
string dataFilePath = targetDir + "/" + Convert.ToString(ts) + ".dat";
StrValue strDataFilePathValue = new StrValue(dataFilePath);
base.UpdateHelper(key, strDataFilePathValue, IsAppend);
FileStream fout = new FileStream(dataFilePath,
FileMode.OpenOrCreate,
FileAccess.Write,
FileShare.ReadWrite);
// write <val> to file
MemoryStream memStream = value.SerializeToByteStream();
fout.Write(memStream.GetBuffer(), 0, (int)memStream.Length);
fout.Close();
// remove old entry/file if present and update has been called
if (valueDataFilePathOld != null && !IsAppend)
{
System.IO.FileInfo fi = new System.IO.FileInfo(valueDataFilePathOld.ToString());
try
{
fi.Delete();
}
catch (System.IO.IOException e)
{
Console.WriteLine(e.Message);
}
}
}