public void SingleOnlyKeyEraseWorks()
{
var val = GetSampleValue().ToArray();
var key = new byte[2];
_cursor.Upsert(key, val);
Assert.Equal(1, _cursor.EraseTo(_cursor));
Assert.False(_cursor.IsValid());
Assert.Equal(0, _root.GetCount());
}
public void EraseRange(long firstKeyIndex, long lastKeyIndex)
{
if (firstKeyIndex < 0)
{
firstKeyIndex = 0;
}
if (lastKeyIndex >= GetKeyValueCount())
{
lastKeyIndex = _prefixKeyCount - 1;
}
if (lastKeyIndex < firstKeyIndex)
{
return;
}
MakeWrittable();
firstKeyIndex += _prefixKeyStart;
lastKeyIndex += _prefixKeyStart;
if (_cursor2 == null)
{
_cursor2 = ArtRoot.CreateCursor();
}
_cursor.SeekIndex(firstKeyIndex);
_cursor2.SeekIndex(lastKeyIndex);
_cursor.EraseTo(_cursor2);
InvalidateCurrentKey();
_prefixKeyCount -= lastKeyIndex - firstKeyIndex + 1;
}
public void EraseRange(long firstKeyIndex, long lastKeyIndex)
{
if (firstKeyIndex < 0)
{
firstKeyIndex = 0;
}
if (lastKeyIndex >= GetKeyValueCount())
{
lastKeyIndex = _prefixKeyCount - 1;
}
if (lastKeyIndex < firstKeyIndex)
{
return;
}
MakeWritable();
firstKeyIndex += _prefixKeyStart;
lastKeyIndex += _prefixKeyStart;
_cursor.SeekIndex(firstKeyIndex);
if (lastKeyIndex != firstKeyIndex)
{
if (_cursor2 == null)
{
_cursor2 = BTreeRoot.CreateCursor();
}
_cursor2.SeekIndex(lastKeyIndex);
var firstKey = GetCurrentKeyFromStack();
var secondKey = ByteBuffer.NewAsync(new byte[_cursor2.GetKeyLength()]);
_cursor2.FillByKey(secondKey.AsSyncSpan());
_keyValueDB.WriteEraseRangeCommand(firstKey, secondKey);
_cursor.EraseTo(_cursor2);
}
else
{
_keyValueDB.WriteEraseOneCommand(GetCurrentKeyFromStack());
_cursor.Erase();
}
InvalidateCurrentKey();
_prefixKeyCount -= lastKeyIndex - firstKeyIndex + 1;
}