private void SaveMetaInfStorage(MetaInfDataStorage meta)
{
_fileStream.Seek(-GetCalculateMetaInfDataStorageSize(), SeekOrigin.End);
ZeroFormatterSerializer.Serialize(_fileStream, meta);
metaInfDataStorage = LoadMetaInfStorage();
writeCount++;
}
public TableFileManager(FileStream fs_, Table table, int blockSize)
{
_fileStream = fs_;
using var memStream = new MemoryStream();
ZeroFormatterSerializer.Serialize(memStream, table.TableMetaInf);
var metaInfStorage = new MetaInfDataStorage {
TableMetaInfSize = (int)memStream.Length, RowRecordSize = CalculateRowRecordSize(table), DataBlockSize = blockSize, HeadDataBlockList = 0, HeadFreeBlockList = 0
};
memStream.WriteTo(_fileStream);
CreateMetaInfInEnd(metaInfStorage);
metaInfDataStorage = LoadMetaInfStorage();
}
private static int GetCalculateMetaInfDataStorageSize()
{
using var memStream = new MemoryStream();
var dataBlock = new MetaInfDataStorage
{
DataBlockSize = int.MaxValue,
RowRecordSize = int.MaxValue,
HeadDataBlockList = int.MaxValue,
HeadFreeBlockList = int.MaxValue,
TableMetaInfSize = int.MaxValue
};
ZeroFormatterSerializer.Serialize(memStream, dataBlock);
return((int)memStream.Length);
}
private void CreateMetaInfInEnd(MetaInfDataStorage meta)
{
_fileStream.Seek(0, SeekOrigin.End);
ZeroFormatterSerializer.Serialize(_fileStream, meta);
metaInfDataStorage = LoadMetaInfStorage();
}
public TableFileManager(FileStream fileStream)
{
_fileStream = fileStream;
metaInfDataStorage = LoadMetaInfStorage();
}