RemoveTree() private method

private RemoveTree ( string name ) : bool
name string
return bool
Beispiel #1
0
	    public unsafe void RenameTree(Transaction tx, string fromName, string toName)
	    {
			if (tx.Flags == (TransactionFlags.ReadWrite) == false)
				throw new ArgumentException("Cannot rename a new tree with a read only transaction");

			if (toName.Equals(Constants.RootTreeName, StringComparison.InvariantCultureIgnoreCase) ||
				toName.Equals(Constants.FreeSpaceTreeName, StringComparison.InvariantCultureIgnoreCase))
				throw new InvalidOperationException("Cannot create a tree with reserved name: " + toName);

		    if (tx.ReadTree(toName) != null)
			    throw new ArgumentException("Cannot rename a tree with the name of an existing tree: " + toName);

		    Tree fromTree = tx.ReadTree(fromName);
		    if (fromTree == null)
			    throw new ArgumentException("Tree " + fromName + " does not exists");

            Slice key = (Slice)toName;

	        tx.State.Root.Delete((Slice)fromName);
			var ptr = tx.State.Root.DirectAdd(key, sizeof(TreeRootHeader));
		    fromTree.State.CopyTo((TreeRootHeader*) ptr);
		    fromTree.Name = toName;
		    fromTree.State.IsModified = true;
		    
			tx.RemoveTree(fromName);
			tx.RemoveTree(toName);

			tx.AddTree(toName, fromTree);

			if (IsDebugRecording)
                DebugJournal.RecordWriteAction(DebugActionType.RenameTree, tx, (Slice)toName, fromName, Stream.Null);
	    }
Beispiel #2
0
	    public void DeleteTree(Transaction tx, string name)
        {
            if (tx.Flags == (TransactionFlags.ReadWrite) == false)
                throw new ArgumentException("Cannot create a new newRootTree with a read only transaction");

	        Tree tree = tx.ReadTree(name);
	        if (tree == null)
	            return;

            foreach (var page in tree.AllPages())
            {
                tx.FreePage(page);
            }

            tx.State.Root.Delete((Slice) name);

            tx.RemoveTree(name);
        }