public bool MoveNext()
{
if (disposed)
{
throw new ObjectDisposedException("MongoCursorEnumerator");
}
if (done)
{
return(false);
}
if (!started)
{
reply = GetFirst();
if (reply.Documents.Count == 0)
{
reply = null;
done = true;
return(false);
}
replyIndex = -1;
started = true;
}
if (positiveLimit != 0 && count == positiveLimit)
{
KillCursor(); // early exit
reply = null;
done = true;
return(false);
}
if (replyIndex < reply.Documents.Count - 1)
{
replyIndex++; // move to next document in the current reply
}
else
{
if (openCursorId != 0)
{
reply = GetMore();
if (reply.Documents.Count == 0)
{
reply = null;
done = true;
return(false);
}
replyIndex = 0;
}
else
{
reply = null;
done = true;
return(false);
}
}
count++;
return(true);
}
internal MongoReplyMessage <TDocument> ReceiveMessage <TDocument>(
BsonBinaryReaderSettings readerSettings,
IBsonSerializer <TDocument> serializer)
{
if (_state == MongoConnectionState.Closed)
{
throw new InvalidOperationException("Connection is closed.");
}
lock (_connectionLock)
{
try
{
_lastUsedAt = DateTime.UtcNow;
var networkStream = GetNetworkStream();
var readTimeout = (int)_serverInstance.Settings.SocketTimeout.TotalMilliseconds;
if (readTimeout != 0)
{
networkStream.ReadTimeout = readTimeout;
}
using (var byteBuffer = ByteBufferFactory.LoadLengthPrefixedDataFrom(networkStream))
using (var stream = new ByteBufferStream(byteBuffer, ownsByteBuffer: true))
{
var reply = new MongoReplyMessage <TDocument>(readerSettings, serializer);
reply.ReadFrom(stream);
return(reply);
}
}
catch (Exception ex)
{
HandleException(ex);
throw;
}
}
}
internal MongoReplyMessage <TDocument> ReceiveMessage <TDocument>(
BsonBinaryReaderSettings readerSettings,
IBsonSerializationOptions serializationOptions)
{
if (_state == MongoConnectionState.Closed)
{
throw new InvalidOperationException("Connection is closed.");
}
lock (_connectionLock)
{
try
{
using (var buffer = new BsonBuffer())
{
var networkStream = GetNetworkStream();
var readTimeout = (int)_serverInstance.Settings.SocketTimeout.TotalMilliseconds;
if (readTimeout != 0)
{
networkStream.ReadTimeout = readTimeout;
}
buffer.LoadFrom(networkStream);
var reply = new MongoReplyMessage <TDocument>(readerSettings);
reply.ReadFrom(buffer, serializationOptions);
return(reply);
}
}
catch (Exception ex)
{
HandleException(ex);
throw;
}
}
}
internal MongoReplyMessage <TDocument> ReceiveMessage <TDocument>()
{
if (state == MongoConnectionState.Closed)
{
throw new InvalidOperationException("Connection is closed");
}
lock (connectionLock) {
try {
using (var buffer = new BsonBuffer()) {
var networkStream = GetNetworkStream();
networkStream.ReadTimeout = (int)serverInstance.Server.Settings.SocketTimeout.TotalMilliseconds;
buffer.LoadFrom(networkStream);
var reply = new MongoReplyMessage <TDocument>(this);
reply.ReadFrom(buffer);
return(reply);
}
} catch (Exception ex) {
HandleException(ex);
throw;
}
}
}