public void EraseRange(long firstKeyIndex, long lastKeyIndex)
{
lock (_log)
{
_log.WriteUInt8((byte)KVReplayOperation.EraseRange);
_log.WriteVUInt32(TrIndex);
_log.WriteVInt64(firstKeyIndex);
_log.WriteVInt64(lastKeyIndex);
_log.FlushBuffer();
}
_tr.EraseRange(firstKeyIndex, lastKeyIndex);
}
public long RemoveRange(TKey start, bool includeStart, TKey end, bool includeEnd)
{
var startKeyBytes = KeyToByteArray(start);
var endKeyBytes = KeyToByteArray(end);
_keyValueTrProtector.Start();
_modificationCounter++;
_keyValueTr.SetKeyPrefix(_prefix);
var result = _keyValueTr.Find(ByteBuffer.NewAsync(startKeyBytes));
if (result == FindResult.NotFound)
{
return(0);
}
var startIndex = _keyValueTr.GetKeyIndex();
if (result == FindResult.Exact)
{
if (!includeStart)
{
startIndex++;
}
}
else if (result == FindResult.Previous)
{
startIndex++;
}
result = _keyValueTr.Find(ByteBuffer.NewAsync(endKeyBytes));
var endIndex = _keyValueTr.GetKeyIndex();
if (result == FindResult.Exact)
{
if (!includeEnd)
{
endIndex--;
}
}
else if (result == FindResult.Next)
{
endIndex--;
}
_keyValueTr.EraseRange(startIndex, endIndex);
return(Math.Max(0, endIndex - startIndex + 1));
}
public long RemoveRange(AdvancedEnumeratorParam <TKey> param)
{
_modificationCounter++;
_keyValueTr.FindFirstKey(_prefix);
var prefixIndex = _keyValueTr.GetKeyIndex();
long startIndex;
long endIndex;
if (param.EndProposition == KeyProposition.Ignored)
{
_keyValueTr.FindLastKey(_prefix);
endIndex = _keyValueTr.GetKeyIndex() - prefixIndex - 1;
}
else
{
var keyBytes = KeyToByteArray(param.End);
switch (_keyValueTr.Find(keyBytes, (uint)_prefix.Length))
{
case FindResult.Exact:
endIndex = _keyValueTr.GetKeyIndex() - prefixIndex;
if (param.EndProposition == KeyProposition.Excluded)
{
endIndex--;
}
break;
case FindResult.Previous:
endIndex = _keyValueTr.GetKeyIndex() - prefixIndex;
break;
case FindResult.Next:
endIndex = _keyValueTr.GetKeyIndex() - prefixIndex - 1;
break;
case FindResult.NotFound:
endIndex = -1;
break;
default:
throw new ArgumentOutOfRangeException();
}
}
if (param.StartProposition == KeyProposition.Ignored)
{
startIndex = 0;
}
else
{
var keyBytes = KeyToByteArray(param.Start);
switch (_keyValueTr.Find(keyBytes, (uint)_prefix.Length))
{
case FindResult.Exact:
startIndex = _keyValueTr.GetKeyIndex() - prefixIndex;
if (param.StartProposition == KeyProposition.Excluded)
{
startIndex++;
}
break;
case FindResult.Previous:
startIndex = _keyValueTr.GetKeyIndex() - prefixIndex + 1;
break;
case FindResult.Next:
startIndex = _keyValueTr.GetKeyIndex() - prefixIndex;
break;
case FindResult.NotFound:
startIndex = 0;
break;
default:
throw new ArgumentOutOfRangeException();
}
}
_keyValueTr.EraseRange(prefixIndex + startIndex, prefixIndex + endIndex);
_count = -1;
return(Math.Max(0, endIndex - startIndex + 1));
}
public void EraseRange(long firstKeyIndex, long lastKeyIndex)
{
EraseRangeCount++;
_keyValueDBTransaction.EraseRange(firstKeyIndex, lastKeyIndex);
}
