public override void Update(RowHolder item, ushort position, ITransaction transaction)
{
transaction.VerifyLock(this.pageId, LockManager.LockTypeEnum.Exclusive);
lock (this.lockObject)
{
RowHolder oldVal = new RowHolder(this.columnTypes);
this.items.GetRow(position, ref oldVal);
this.items.SetRow(position, item);
ILogRecord rc = new UpdateRowRecord(this.pageId, (ushort)(position), diffOldValue: oldVal.Storage, diffNewValue: item.Storage, transaction.TranscationId(), this.columnTypes, this.PageType());
transaction.AddRecord(rc);
this.isDirty = true;
}
}
public StringOnlyPage(uint pageSize, ulong pageId, ulong prevPageId, ulong nextPageId, ITransaction tran)
{
if (pageSize < IPage.FirstElementPosition + sizeof(ushort))
{
throw new ArgumentException("Size can't be less than size of char + sizeof(ushort) for length.");
}
this.pageSize = pageSize;
this.pageId = pageId;
this.prevPageId = prevPageId;
this.nextPageId = nextPageId;
this.items = new char[this.MaxRowCount()];
ILogRecord logRecord = new AllocatePageLogRecord(pageId, tran.TranscationId(), global::PageManager.PageType.StringPage, pageSize, nextPageId, prevPageId, null);
tran.AddRecord(logRecord);
this.isDirty = true;
}
public override int Insert(RowHolder item, ITransaction transaction)
{
transaction.VerifyLock(this.pageId, LockManager.LockTypeEnum.Exclusive);
lock (this.lockObject)
{
int position = this.items.InsertRow(item);
if (position == -1)
{
return(position);
}
this.rowCount++;
ILogRecord rc = new InsertRowRecord(this.pageId, (ushort)(position), item.Storage, transaction.TranscationId(), this.columnTypes, this.PageType());
transaction.AddRecord(rc);
this.isDirty = true;
return(position);
}
}
public MixedPage(uint pageSize, ulong pageId, ColumnInfo[] columnTypes, ulong prevPageId, ulong nextPageId, Memory <byte> memory, ulong bufferPoolToken, ITransaction tran)
{
if (columnTypes == null || columnTypes.Length == 0)
{
throw new ArgumentException("Column type definition can't be null or empty");
}
this.pageSize = pageSize;
this.pageId = pageId;
this.columnTypes = columnTypes;
this.prevPageId = prevPageId;
this.nextPageId = nextPageId;
this.inMemoryStorage = memory;
this.bufferPoolToken = bufferPoolToken;
this.items = new RowsetHolder(this.columnTypes, this.inMemoryStorage, init: true);
ILogRecord logRecord = new AllocatePageLogRecord(pageId, tran.TranscationId(), global::PageManager.PageType.MixedPage, pageSize, nextPageId, prevPageId, columnTypes);
tran.AddRecord(logRecord);
this.isDirty = true;
}
