public Queue GetOrCreateQueue(string name)
{
var queue = GetQueue(name);
if (queue != null)
return queue;
var pos = writer.Position;
queue = new Queue(reader, writer, StartMode.Create);
queue.Flush();
queuesInMem.Add(name, queue);
queues.Add(name, pos);
return queue;
}
public Queue GetQueue(string name)
{
Queue value;
if (queuesInMem.TryGetValue(name, out value))
return value;
var queuePos = queues.FindValue(name);
if (queuePos == null)
return null;
reader.Position = queuePos.Value;
var q = new Queue(reader, writer, StartMode.Open);
queuesInMem.Add(name, q);
return q;
}
private void CreateFromScratch()
{
binaryWriter.Write(HeaderSignature);
binaryWriter.Write7BitEncodedInt(Version);
binaryWriter.Write(Guid.NewGuid().ToByteArray());
using (var reader = OpenReader())
{
var docs = new Tree(reader, writer, StartMode.Create);
var docsInTx = new Tree(reader, writer, StartMode.Create);
var docById = new Tree(reader, writer, StartMode.Create);
var docByEtag = new Tree(reader, writer, StartMode.Create);
var tx = new Tree(reader, writer, StartMode.Create);
var attachments = new Tree(reader, writer, StartMode.Create);
var tasks = new Queue(reader, writer, StartMode.Create);
var tasksByIndex = new Tree(reader, writer, StartMode.Create);
var identity = new Tree(reader, writer, StartMode.Create);
var indexes = new Tree(reader, writer, StartMode.Create);
var queues = new TreeOfQueues(reader, writer, StartMode.Create);
var mapResultsByDocId = new TreeOfBags(reader, writer, StartMode.Create);
var mapResultsByReduceKey = new TreeOfBags(reader, writer, StartMode.Create);
docs.Flush();
docsInTx.Flush();
docById.Flush();
docByEtag.Flush();
tx.Flush();
attachments.Flush();
tasks.Flush();
tasksByIndex.Flush();
identity.Flush();
indexes.Flush();
queues.Flush();
mapResultsByDocId.Flush();
mapResultsByReduceKey.Flush();
WriteTransaction(new StorageTransaction
{
AttachmentPosition = attachments.RootPosition,
AttachmentsCount = 0,
DocumentsPosition = docs.RootPosition,
DocumentsCount = 0,
DocumentsInTransactionPosition = docsInTx.RootPosition,
DocumentsByIdPosition = docById.RootPosition,
DocumentsByEtagPosition = docByEtag.RootPosition,
TasksPosition = tasks.RootPosition,
TasksCount = 0,
TransactionPosition = tx.RootPosition,
IdentityPosition = identity.RootPosition,
IndexesPosition = indexes.RootPosition,
QueuesPosition = queues.RootPosition,
TasksByIndexPosition = tasksByIndex.RootPosition,
MappedResultsByDocumentIdPosition = mapResultsByDocId.RootPosition,
MappedResultsByReduceKeyPosition = mapResultsByReduceKey.RootPosition
});
writer.Flush(true);
}
}
