| private AddTree ( string name, Voron.Trees.Tree tree ) : void | ||
| name | string | |
| tree | Voron.Trees.Tree | |
| return | void | |
public unsafe Tree CreateTree(Transaction tx, string name, bool keysPrefixing = false)
{
if (tx.Flags == (TransactionFlags.ReadWrite) == false)
throw new ArgumentException("Cannot create a new tree with a read only transaction");
Tree tree = tx.ReadTree(name);
if (tree != null)
return tree;
if (name.Equals(Constants.RootTreeName, StringComparison.InvariantCultureIgnoreCase) ||
name.Equals(Constants.FreeSpaceTreeName, StringComparison.InvariantCultureIgnoreCase))
throw new InvalidOperationException("Cannot create a tree with reserved name: " + name);
Slice key = (Slice)name;
// we are in a write transaction, no need to handle locks
var header = (TreeRootHeader*)tx.State.Root.DirectRead(key);
if (header != null)
{
tree = Tree.Open(tx, header);
tree.Name = name;
tx.AddTree(name, tree);
return tree;
}
tree = Tree.Create(tx, keysPrefixing);
tree.Name = name;
var space = tx.State.Root.DirectAdd(key, sizeof(TreeRootHeader));
tree.State.CopyTo((TreeRootHeader*)space);
tree.State.IsModified = true;
tx.AddTree(name, tree);
if(IsDebugRecording)
DebugJournal.RecordWriteAction(DebugActionType.CreateTree, tx, Slice.Empty,name,Stream.Null);
return tree;
}
public unsafe Tree CreateTree(Transaction tx, string name, bool keysPrefixing = false)
{
Tree tree = tx.ReadTree(name);
if (tree != null)
return tree;
if (name.Equals(Constants.RootTreeName, StringComparison.InvariantCultureIgnoreCase))
return tx.Root;
if (name.Equals(Constants.FreeSpaceTreeName, StringComparison.InvariantCultureIgnoreCase))
return tx.FreeSpaceRoot;
if (tx.Flags == (TransactionFlags.ReadWrite) == false)
throw new InvalidOperationException("No such tree: " + name + " and cannot create trees in read transactions");
Slice key = name;
tree = Tree.Create(tx, keysPrefixing);
tree.Name = name;
var space = tx.Root.DirectAdd(key, sizeof(TreeRootHeader));
tree.State.CopyTo((TreeRootHeader*)space);
tree.State.IsModified = true;
tx.AddTree(name, tree);
if(IsDebugRecording)
DebugJournal.RecordWriteAction(DebugActionType.CreateTree, tx, Slice.Empty,name,Stream.Null);
return tree;
}
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);
}
public unsafe Tree CreateTree(Transaction tx, string name)
{
if (tx.Flags == (TransactionFlags.ReadWrite) == false)
throw new ArgumentException("Cannot create a new tree with a read only transaction");
Tree tree = tx.ReadTree(name);
if (tree != null)
return tree;
Slice key = name;
// we are in a write transaction, no need to handle locks
var header = (TreeRootHeader*)tx.State.Root.DirectRead(key);
if (header != null)
{
tree = Tree.Open(tx, _sliceComparer, header);
tree.Name = name;
tx.AddTree(name, tree);
return tree;
}
tree = Tree.Create(tx, _sliceComparer);
tree.Name = name;
var space = tx.State.Root.DirectAdd(key, sizeof(TreeRootHeader));
tree.State.CopyTo((TreeRootHeader*)space);
tree.State.IsModified = true;
tx.AddTree(name, tree);
if(IsDebugRecording)
DebugJournal.RecordAction(DebugActionType.CreateTree, Slice.Empty,name,Stream.Null);
return tree;
}
