public void SetNewRoot(IRootNode artRoot)
{
var newRoot = (RootNodeV)artRoot;
if (newRoot._root != _rootNode._root)
{
throw new ArgumentException("SetNewRoot allows only upgrades to writable identical root");
}
_rootNode = (RootNodeV)artRoot;
}
public IRootNode CreateWritableTransaction()
{
if (_writable)
{
throw new InvalidOperationException("Only readonly root node could be CreateWritableTransaction");
}
var node = new RootNodeV(_impl);
node._writable = true;
node._root = _root;
node.CommitUlong = CommitUlong;
node.TransactionId = TransactionId + 1;
node.TrLogFileId = TrLogFileId;
node.TrLogOffset = TrLogOffset;
node._ulongs = _ulongs == null ? null : (ulong[])_ulongs.Clone();
NodeUtilsV.Reference(_root);
return(node);
}
public IRootNode Snapshot()
{
var snapshot = new RootNodeV(_impl);
snapshot._writable = false;
snapshot._root = _root;
snapshot.CommitUlong = CommitUlong;
snapshot.TransactionId = TransactionId;
snapshot.TrLogFileId = TrLogFileId;
snapshot.TrLogOffset = TrLogOffset;
snapshot._ulongs = _ulongs == null ? null : (ulong[])_ulongs.Clone();
if (_writable)
{
TransactionId++;
}
NodeUtilsV.Reference(_root);
return(snapshot);
}
CursorV(CursorV from)
{
_rootNode = from._rootNode;
_stack = new StructList <CursorItem>(from._stack);
}
public CursorV(RootNodeV rootNode)
{
_rootNode = rootNode;
_stack = new StructList <CursorItem>();
}