/// <summary>
/// Only valid on the root node, this method moves all entries into a
/// single child node.
/// </summary>
/// <returns>Whether any changes were made.</returns>
internal bool Depose()
{
if (!_isRoot)
{
throw new InvalidOperationException("Only valid on root node");
}
if (_entries.Count == 1)
{
return(false);
}
IndexEntry newRootEntry = new IndexEntry(_index.IsFileIndex);
newRootEntry.Flags = IndexEntryFlags.End;
IndexBlock newBlock = _index.AllocateBlock(newRootEntry);
// Set the deposed entries into the new node. Note we updated the parent
// pointers first, because it's possible SetEntries may need to further
// divide the entries to fit into nodes. We mustn't overwrite any changes.
newBlock.Node.SetEntries(_entries, 0, _entries.Count);
_entries.Clear();
_entries.Add(newRootEntry);
return(true);
}
/// <summary>
/// Only valid on the root node, this method moves all entries into a
/// single child node.
/// </summary>
internal bool Depose()
{
if (_parent != null)
{
throw new InvalidOperationException("Only valid on root node");
}
if (_entries.Count == 1)
{
return(false);
}
IndexEntry newRootEntry = new IndexEntry(_index.IsFileIndex);
newRootEntry.Flags = IndexEntryFlags.End;
IndexBlock newBlock = _index.AllocateBlock(this, newRootEntry);
newBlock.Node.SetEntries(_entries, 0, _entries.Count);
// All of the nodes that used to be one layer beneath us, are now two layers
// beneath, they need their parent pointers updating.
foreach (var entry in _entries)
{
if ((entry.Flags & IndexEntryFlags.Node) != 0)
{
IndexBlock block = _index.GetSubBlockIfCached(entry);
if (block != null)
{
block.Node._parent = newBlock.Node;
}
}
}
_entries.Clear();
_entries.Add(newRootEntry);
return(true);
}