public void Add(long id, BlittableJsonReaderObject result)
{
IsModified = true;
using (_env.GetTemporaryPage(_parent.Llt, out TemporaryPage tmp))
{
var dataPosInTempPage = 0;
var readResult = _parent.Read(_nestedValueKey);
if (readResult != null)
{
var reader = readResult.Reader;
var entry = (ResultHeader *)reader.Base;
var end = reader.Base + reader.Length;
while (entry < end)
{
if (entry->Id == id)
{
if (entry->Size != result.Size)
{
Delete(id);
readResult = _parent.Read(_nestedValueKey);
break;
}
using (_parent.DirectAdd(_nestedValueKey, reader.Length, out byte *ptr))
{
var pos = ptr + ((byte *)entry - reader.Base + sizeof(ResultHeader));
Memory.Copy(pos, result.BasePointer, result.Size);
return;// just overwrite it completely
}
}
entry = (ResultHeader *)((byte *)entry + sizeof(ResultHeader) + entry->Size);
}
if (readResult != null)
{
Memory.Copy(tmp.TempPagePointer, readResult.Reader.Base, readResult.Reader.Length);
dataPosInTempPage = readResult.Reader.Length;
}
}
Debug.Assert(dataPosInTempPage + sizeof(ResultHeader) + result.Size <= tmp.TempPageBuffer.Length);
var newEntry = (ResultHeader *)(tmp.TempPagePointer + dataPosInTempPage);
newEntry->Id = id;
newEntry->Size = (ushort)result.Size;
Memory.Copy(tmp.TempPagePointer + dataPosInTempPage + sizeof(ResultHeader), result.BasePointer, result.Size);
dataPosInTempPage += result.Size + sizeof(ResultHeader);
using (_parent.DirectAdd(_nestedValueKey, dataPosInTempPage, out byte *destPtr))
Memory.Copy(destPtr, tmp.TempPagePointer, dataPosInTempPage);
_dataSize += result.Size + sizeof(ResultHeader);
}
}