/// <summary>
/// Remove from in-memory blocks the block referenced
/// by DataAddress.
/// NOTE: this function is invoked when Rolling back changes
/// </summary>
/// <param name="dataAddress"></param>
/// <param name="transaction"> </param>
internal virtual bool RemoveInMemory(long dataAddress,
Transaction.ITransactionLogger transaction)
{
//** current block
if (currentDataBlock != null &&
(currentDataBlock.DataAddress == -1 || currentDataBlock.IsBlockOfThis(dataAddress)))
{
currentEntry = currentDataBlock = null;
_currentEntryDataAddress = -1;
}
//** MRU
RemoveFromCache(transaction);
if (DataBlockDriver.HeaderData.RecycledSegment != null)
{
if (dataAddress >= DataBlockDriver.HeaderData.RecycledSegment.StartBlockAddress &&
dataAddress <= (DataBlockDriver.HeaderData.RecycledSegment.StartBlockAddress +
DataBlockDriver.HeaderData.RecycledSegment.Count * (int)DataBlockSize))
{
DataBlockDriver.HeaderData.RecycledSegment = null;
}
}
//** take care of deleted blocks list...
if (deletedBlocks is CollectionOnDisk)
{
((CollectionOnDisk)deletedBlocks).RemoveInMemory(dataAddress, transaction);
}
//** Header and DiskBuffer
return(DiskBuffer.DataAddress == -1 ||
DiskBuffer.IsBlockOfThis(dataAddress) ||
HeaderData.DiskBuffer.DataAddress == -1 ||
HeaderData.DiskBuffer.IsBlockOfThis(dataAddress));
}
public object Clone()
{
var r = new HeaderData
{
_count = _count,
_isDirty = _isDirty,
DataBlockSize = DataBlockSize,
DiskBuffer = (Sop.DataBlock)DiskBuffer.Clone(),
EndAllocatableAddress = EndAllocatableAddress,
HintSizeOnDisk = HintSizeOnDisk,
IsModifiedInTransaction = IsModifiedInTransaction,
NextAllocatableAddress = NextAllocatableAddress,
OccupiedBlocksHead = (Sop.DataBlock)OccupiedBlocksHead.Clone(),
OccupiedBlocksTail = (Sop.DataBlock)OccupiedBlocksTail.Clone(),
OnDiskLeftoverSegmentSize = OnDiskLeftoverSegmentSize,
StartAllocatableAddress = StartAllocatableAddress
};
if (RecycledSegment != null)
{
r.RecycledSegment = (DeletedBlockInfo)RecycledSegment.Clone();
}
if (RecycledSegmentBeforeTransaction != null)
{
r.RecycledSegmentBeforeTransaction = (DeletedBlockInfo)RecycledSegmentBeforeTransaction.Clone();
}
return(r);
}
public object Clone()
{
DeletedBlockInfo r = new DeletedBlockInfo();
r.Count = Count;
r.StartBlockAddress = StartBlockAddress;
r.IsDirty = IsDirty;
r.HintSizeOnDisk = HintSizeOnDisk;
r.EndBlockAddress = EndBlockAddress;
if (DiskBuffer != null)
{
r.DiskBuffer = (Sop.DataBlock)DiskBuffer.Clone();
}
return(r);
}
protected EditorViewModel(IEditorDocument document, IEditorBuffer viewBuffer = null)
{
Check.ArgumentNull(nameof(document), document);
DiskBuffer = document.EditorBuffer;
DiskBuffer.AddService(this);
ViewBuffer = viewBuffer ?? DiskBuffer;
if (viewBuffer != null)
{
ViewBuffer.AddService(this);
}
_document = document;
}
/// <summary>
/// Register current collection's state
/// </summary>
public virtual void RegisterChange(bool partialRegister = false)
{
IsDirty = true;
_registerCallCount++;
if (_registerCallCount == 1)
{
if (DiskBuffer == null)
{
throw new InvalidOperationException("'DiskBuffer' is null.");
}
bool stateSerialized = false;
if (!partialRegister || DiskBuffer.SizeOccupied == 0)
{
stateSerialized = true;
DiskBuffer.ClearData();
OnDiskBinaryWriter.WriteObject(File, this, DiskBuffer);
}
if (!ChangeRegistry)
{
_registerCallCount = 0;
if (!partialRegister || stateSerialized)
{
Blocks.Add(DataBlockDriver.GetId(DiskBuffer), DiskBuffer); //90;
}
//DataBlockDriver.MruManager.Add(DataBlockDriver.GetId(DiskBuffer), DiskBuffer);
}
else
{
DataBlockDriver.SetDiskBlock(this, DiskBuffer, true);
if (_registerCallCount > 1)
{
_registerCallCount = 0;
//IsDirty = true;
RegisterChange(partialRegister);
}
_registerCallCount = 0;
}
}
}
/// <summary>
/// Close the Collection
/// </summary>
public virtual void Close()
{
bool miscCollsClosed = false;
if (IsOpen)
{
if (!IsCloned)
{
OnCommit();
}
if (IsDirty && !IsCloned && DataAddress >= 0 && Count > 0)
{
Flush();
}
if (deletedBlocks != null)
{
deletedBlocks.Close();
}
miscCollsClosed = true;
if (DataBlockDriver != null)
{
if (!IsCloned)
{
//DataBlocksPool.RemoveFromPool(this.DataBlockDriver.MruManager);
//this.DataBlockDriver.MruManager.Clear();
DataBlockDriver.HeaderData.Clear();
}
}
if (Parent == null)
{
if (OnDiskBinaryWriter != null)
{
OnDiskBinaryWriter.Close();
OnDiskBinaryWriter = null;
}
if (OnDiskBinaryReader != null)
{
OnDiskBinaryReader.Close();
OnDiskBinaryReader = null;
}
}
if (Blocks != null)
{
Blocks.Clear();
}
currentDataBlock = null;
currentEntry = null;
_currentEntryDataAddress = -1;
isOpen = false;
}
if (_fileStream != null)
{
_fileStream.Close();
_fileStream = null;
}
if (!miscCollsClosed)
{
if (deletedBlocks != null)
{
deletedBlocks.Close();
}
}
if (_isUnloading)
{
_isUnloading = false;
}
long da = DiskBuffer.DataAddress;
DiskBuffer.Initialize();
DiskBuffer.DataAddress = da;
}
public override string ToString()
{
return(DiskBuffer.ToString());
}
