internal ReadResult Read(RavenJToken key, Guid txId)
{
byte[] readData = null;
Guid mofiedByTx;
if (keysModifiedInTx.TryGetValue(key, out mofiedByTx) && mofiedByTx == txId)
{
Command command = operationsInTransactions.GetOrAdd(txId, new List <Command>()).LastOrDefault(
x => comparer.Equals(x.Key, key));
if (command != null)
{
switch (command.Type)
{
case CommandType.Put:
return(new ReadResult
{
Position = command.Position,
Size = command.Size,
Data = () => readData ?? (readData = ReadData(command)),
Key = command.Key
});
case CommandType.Delete:
return(null);
default:
throw new ArgumentOutOfRangeException();
}
}
}
return(persistentSource.Read(log =>
{
PositionInFile pos;
if (KeyToFilePos.TryGetValue(key, out pos) == false)
{
return null;
}
return new ReadResult
{
Position = pos.Position,
Size = pos.Size,
Data = () => readData ?? (readData = ReadData(pos.Position, pos.Size, pos.Key)),
Key = pos.Key
};
}));
}
private void RemoveInternal(RavenJToken key)
{
PositionInFile removedValue;
bool removed;
KeyToFilePos = KeyToFilePos.TryRemove(key, out removed, out removedValue);
if (removed == false)
{
return;
}
WasteCount += 1;
foreach (var index in SecondaryIndices)
{
index.Remove(removedValue.Key);
}
}
private void AddInteral(RavenJToken key, PositionInFile position)
{
KeyToFilePos = KeyToFilePos.AddOrUpdate(key, position, (token, oldPos) =>
{
WasteCount += 1;
foreach (var index in SecondaryIndices)
{
index.Remove(oldPos.Key);
}
return(position);
});
foreach (var index in SecondaryIndices)
{
index.Add(key);
}
}
private void AddInteral(RavenJToken key, PositionInFile position)
{
var ravenJObject = key as RavenJObject;
if (ravenJObject != null)
{
ravenJObject.EnsureSnapshot();
}
KeyToFilePos = KeyToFilePos.AddOrUpdate(key, position, (token, oldPos) =>
{
WasteCount += 1;
foreach (var index in SecondaryIndices)
{
index.Remove(oldPos.Key);
}
return(position);
});
foreach (var index in SecondaryIndices)
{
index.Add(key);
}
}
