public void Delete(Transaction tx, Slice key)
{
if (tx.Flags == (TransactionFlags.ReadWrite) == false)
{
throw new ArgumentException("Cannot delete a value in a read only transaction");
}
var txInfo = tx.GetTreeInformation(this);
using (var cursor = tx.NewCursor(this))
{
var page = FindPageFor(tx, key, cursor);
page.NodePositionFor(key, _cmp);
if (page.LastMatch != 0)
{
return; // not an exact match, can't delete
}
page = tx.ModifyCursor(this, cursor);
txInfo.State.EntriesCount--;
RemoveLeafNode(tx, cursor, page);
var treeRebalancer = new TreeRebalancer(tx, txInfo, _cmp);
var changedPage = page;
while (changedPage != null)
{
changedPage = treeRebalancer.Execute(cursor, changedPage);
}
page.DebugValidate(tx, _cmp, txInfo.RootPageNumber);
}
}
public void Delete(Slice key, ushort?version = null)
{
if (_tx.Flags == (TransactionFlags.ReadWrite) == false)
{
throw new ArgumentException("Cannot delete a value in a read only transaction");
}
State.IsModified = true;
Lazy <Cursor> lazy;
NodeHeader * node;
var page = FindPageFor(key, out node, out lazy);
if (page.LastMatch != 0)
{
return; // not an exact match, can't delete
}
page = _tx.ModifyPage(page.PageNumber, this, page);
State.EntriesCount--;
ushort nodeVersion;
RemoveLeafNode(page, out nodeVersion);
CheckConcurrency(key, version, nodeVersion, TreeActionType.Delete);
var treeRebalancer = new TreeRebalancer(_tx, this, lazy.Value);
var changedPage = page;
while (changedPage != null)
{
changedPage = treeRebalancer.Execute(changedPage);
}
page.DebugValidate(_tx, State.RootPageNumber);
}
public void Delete(Transaction tx, Slice key, ushort? version = null)
{
if (tx.Flags == (TransactionFlags.ReadWrite) == false)
throw new ArgumentException("Cannot delete a value in a read only transaction");
State.IsModified = true;
Lazy<Cursor> lazy;
var page = FindPageFor(tx, key, out lazy);
page.NodePositionFor(key, _cmp);
if (page.LastMatch != 0)
return; // not an exact match, can't delete
page = tx.ModifyPage(page.PageNumber, page);
State.EntriesCount--;
ushort nodeVersion;
RemoveLeafNode(tx, page, out nodeVersion);
CheckConcurrency(key, version, nodeVersion, TreeActionType.Delete);
var treeRebalancer = new TreeRebalancer(tx, this);
var changedPage = page;
while (changedPage != null)
{
changedPage = treeRebalancer.Execute(lazy.Value, changedPage);
}
page.DebugValidate(tx, _cmp, State.RootPageNumber);
}
