public void SetValueSize(long newSize)
{
if (newSize < 0) throw new ArgumentOutOfRangeException("newSize");
if (_currentKeyIndexInLeaf < 0) throw new BTDBException("Current Key is invalid");
var iter = new BTreeChildIterator(_currentKeySector.Data);
iter.MoveTo(_currentKeyIndexInLeaf);
long oldSize = iter.ValueLen;
if (oldSize == newSize) return;
UpgradeToWriteTransaction();
int oldInlineSize = BTreeChildIterator.CalcValueLenInline(oldSize);
int newInlineSize = BTreeChildIterator.CalcValueLenInline(newSize);
var newEndContent = new byte[newInlineSize];
byte[] oldEndContent = null;
long newEndContentOfs = newSize - newEndContent.Length;
if (oldSize < newSize)
{
oldEndContent = new byte[oldInlineSize];
ReadValue(oldSize - oldInlineSize, oldInlineSize, oldEndContent, 0);
}
else
{
ReadValue(newEndContentOfs, (int)Math.Min(newEndContent.Length, oldSize - newEndContentOfs), newEndContent, 0);
}
long oldDeepSize = oldSize - oldInlineSize;
long newDeepSize = newSize - newInlineSize;
if (oldDeepSize > 0 && newDeepSize == 0)
DeleteContentSector(iter.ValueSectorPtr, oldDeepSize, _currentKeySector);
_currentKeySector = _owner.ResizeSectorWithUpdatePosition(_currentKeySector, iter.TotalLength - iter.CurrentEntrySize + BTreeChildIterator.CalcEntrySize(iter.KeyLen, newSize), _currentKeySector.Parent, _currentKeySectorParents);
iter.ResizeValue(_currentKeySector.Data, newSize);
_owner.FixChildrenParentPointers(_currentKeySector);
if (oldDeepSize != newDeepSize)
{
if (oldDeepSize == 0)
{
CreateContentSector(newDeepSize, _currentKeySector, iter.ValueSectorPtrOffset);
}
else if (newDeepSize != 0)
{
ResizeContentSector(iter.ValueSectorPtr, oldDeepSize, _currentKeySector, iter.ValueSectorPtrOffset, newDeepSize, null, 0);
}
}
if (newEndContent.Length > 0) InternalWriteValue(newEndContentOfs, newEndContent.Length, newEndContent, 0);
if (oldEndContent != null && oldEndContent.Length > 0) InternalWriteValue(oldSize - oldInlineSize, oldInlineSize, oldEndContent, 0);
}
public void SetValue(byte[] buf, int bufOfs, int len)
{
if (len < 0) throw new ArgumentOutOfRangeException("len");
if (_currentKeyIndexInLeaf < 0) throw new BTDBException("Current Key is invalid");
var iter = new BTreeChildIterator(_currentKeySector.Data);
iter.MoveTo(_currentKeyIndexInLeaf);
long oldSize = iter.ValueLen;
if (oldSize == len)
{
WriteValue(0, len, buf, bufOfs);
return;
}
UpgradeToWriteTransaction();
int oldInlineSize = BTreeChildIterator.CalcValueLenInline(oldSize);
int newInlineSize = BTreeChildIterator.CalcValueLenInline(len);
long oldDeepSize = oldSize - oldInlineSize;
int newDeepSize = len - newInlineSize;
if (oldDeepSize > 0 && newDeepSize == 0)
DeleteContentSector(iter.ValueSectorPtr, oldDeepSize, _currentKeySector);
_currentKeySector = _owner.ResizeSectorWithUpdatePosition(_currentKeySector, iter.TotalLength - iter.CurrentEntrySize + BTreeChildIterator.CalcEntrySize(iter.KeyLen, len), _currentKeySector.Parent, _currentKeySectorParents);
iter.ResizeValue(_currentKeySector.Data, len);
_owner.FixChildrenParentPointers(_currentKeySector);
Array.Copy(buf, bufOfs + len - newInlineSize, _currentKeySector.Data, iter.ValueOffset, newInlineSize);
if (oldDeepSize == 0)
{
if (newDeepSize != 0)
{
CreateContentSector(buf, bufOfs, newDeepSize, _currentKeySector, iter.ValueSectorPtrOffset);
}
}
else if (newDeepSize != 0)
{
ResizeContentSector(iter.ValueSectorPtr, oldDeepSize, _currentKeySector, iter.ValueSectorPtrOffset, newDeepSize, buf, bufOfs);
}
}