private int CalculateRowRecordSize(Table table)
{
using var memStream = new MemoryStream();
var rowRecord = new RowRecord(table.CreateDefaultRow().Result);
ZeroFormatterSerializer.Serialize(memStream, rowRecord);
return((int)memStream.Length);
}
public void SaveRecord(RowRecord record, int pos, int recordSize)
{
using var memStream = new MemoryStream(Data);
memStream.Seek(pos * recordSize, SeekOrigin.Begin);
var buffer = new byte[recordSize];
ZeroFormatterSerializer.Serialize(ref buffer, 0, record);
memStream.Write(buffer, 0, buffer.Length);
}
public bool InsertRecord(RowRecord record, int recordSize)
{
if (CountRealRecords * recordSize + recordSize > Data.Length)
{
return(false);
}
SaveRecord(record, CountRealRecords, recordSize);
CountRealRecords++;
CountNotDeletedRecords++;
return(true);
}
public void InsertRecord(RowRecord rowRecord)
{
var dataBlock = LoadDataBlock(metaInfDataStorage.HeadDataBlockList);
if (dataBlock == null || !dataBlock.InsertRecord(rowRecord, metaInfDataStorage.RowRecordSize))
{
MoveNewBlockToHead();
dataBlock = LoadDataBlock(metaInfDataStorage.HeadDataBlockList);
dataBlock.InsertRecord(rowRecord, metaInfDataStorage.RowRecordSize);
}
SaveDataBlock(dataBlock, metaInfDataStorage.HeadDataBlockList);
}
public OperationResult <Tuple <long, long> > InsertRow(Id tableName, Row fields)
{
if (!File.Exists(GetTableFileName(tableName)))
{
return(new OperationResult <Tuple <long, long> >(ExecutionState.failed, new Tuple <long, long>(0, 0), new TableNotExistError(FullTableName(tableName))));
}
using var manager = new TableFileManager(new FileStream(GetTableFileName(tableName), FileMode.Open, FileAccess.ReadWrite, FileShare.Read, 4096));
var rowRecord = new RowRecord(fields);
manager.InsertRecord(rowRecord);
return(new OperationResult <Tuple <long, long> >(ExecutionState.performed, new Tuple <long, long>(manager.readCount, manager.writeCount)));
}
public bool UpdateRecord(RowRecord newRecord, int pos, int recordSize)
{
SaveRecord(newRecord, pos, recordSize);
return(true);
}
