private void DiskWritePageTable(string tableName, PageTable pt)
{
string filename = DatabaseName + "." + tableName + ".index";
using (var fileStream = new FileStream(filename, FileMode.OpenOrCreate))
{
var pageTable = pt.GetBytes();
fileStream.Seek(0, SeekOrigin.Begin);
fileStream.Write(pageTable, 0, pageTable.Length);
fileStream.Flush();
}
}
//mark everything in this page, so next time we will write all records in this page to a different page
private void UpdateShadowIdsForPage(PageTable pageTable, int pageIndex, int shadowId, Guid transactionId)
{
foreach (var item in pageTable.RecordIndices)
{
if (item.PageIndex == pageIndex && item.Key[0] != 0)
{
item.IsDirty = 1;
item.ShadowFileId = shadowId;
item.TransactionId = transactionId;
}
}
}
private void CreatePageTable(string tableName, int keySize)
{
string filename = DatabaseName + "." + tableName + ".index";
if (File.Exists(filename))
{
return;
}
var pt = new PageTable(new byte[DefaultPageSize], DefaultPageSize, keySize);
DiskWritePageTable(tableName, pt);
}
private void DiskWritePageTable(string tableName, PageTable pt)
{
string filename = DatabaseName + "." + tableName + ".index";
using (var fileStream = new FileStream(filename, FileMode.OpenOrCreate))
{
var pageTable = pt.GetBytes();
fileStream.Seek(0, SeekOrigin.Begin);
fileStream.Write(pageTable, 0, pageTable.Length);
fileStream.Flush();
}
}
private void CreatePageTable(string tableName, int keySize)
{
string filename = DatabaseName + "." + tableName + ".index";
if (File.Exists(filename))
return;
var pt = new PageTable(new byte[DefaultPageSize], DefaultPageSize, keySize);
DiskWritePageTable(tableName, pt);
}
//mark everything in this page, so next time we will write all records in this page to a different page
private void UpdateShadowIdsForPage(PageTable pageTable, int pageIndex, int shadowId, Guid transactionId)
{
foreach (var item in pageTable.RecordIndices)
{
if (item.PageIndex == pageIndex && item.Key[0] != 0)
{
item.IsDirty = 1;
item.ShadowFileId = shadowId;
item.TransactionId = transactionId;
}
}
}
