internal override void ReadHeaderFrom(BsonBuffer buffer)
{
base.ReadHeaderFrom(buffer);
_responseFlags = (ResponseFlags)buffer.ReadInt32();
_cursorId = buffer.ReadInt64();
_startingFrom = buffer.ReadInt32();
_numberReturned = buffer.ReadInt32();
if ((_responseFlags & ResponseFlags.CursorNotFound) != 0)
{
throw new MongoQueryException("Cursor not found.");
}
if ((_responseFlags & ResponseFlags.QueryFailure) != 0)
{
BsonDocument document;
using (BsonReader bsonReader = new BsonBinaryReader(buffer, false, _readerSettings))
{
document = (BsonDocument)BsonDocumentSerializer.Instance.Deserialize(bsonReader, typeof(BsonDocument), null);
}
var mappedException = ExceptionMapper.Map(document);
if (mappedException != null)
{
throw mappedException;
}
var err = document.GetValue("$err", "Unknown error.");
var message = string.Format("QueryFailure flag was {0} (response was {1}).", err, document.ToJson());
throw new MongoQueryException(message, document);
}
}
internal void ReadFrom(
BsonBuffer buffer,
IBsonSerializationOptions serializationOptions
)
{
var messageStartPosition = buffer.Position;
ReadMessageHeaderFrom(buffer);
responseFlags = (ResponseFlags)buffer.ReadInt32();
cursorId = buffer.ReadInt64();
startingFrom = buffer.ReadInt32();
numberReturned = buffer.ReadInt32();
using (BsonReader bsonReader = BsonReader.Create(buffer, readerSettings)) {
if ((responseFlags & ResponseFlags.CursorNotFound) != 0)
{
throw new MongoQueryException("Cursor not found.");
}
if ((responseFlags & ResponseFlags.QueryFailure) != 0)
{
var document = BsonDocument.ReadFrom(bsonReader);
var err = document["$err", null].AsString ?? "Unknown error.";
var message = string.Format("QueryFailure flag was {0} (response was {1}).", err, document.ToJson());
throw new MongoQueryException(message, document);
}
documents = new List <TDocument>(numberReturned);
while (buffer.Position - messageStartPosition < messageLength)
{
var document = (TDocument)BsonSerializer.Deserialize(bsonReader, typeof(TDocument), serializationOptions);
documents.Add(document);
}
}
}
// internal methods
internal void ReadFrom(BsonBuffer buffer, IBsonSerializationOptions serializationOptions)
{
if (serializationOptions == null && typeof(TDocument) == typeof(BsonDocument))
{
serializationOptions = DocumentSerializationOptions.AllowDuplicateNamesInstance;
}
var messageStartPosition = buffer.Position;
ReadMessageHeaderFrom(buffer);
_responseFlags = (ResponseFlags)buffer.ReadInt32();
_cursorId = buffer.ReadInt64();
_startingFrom = buffer.ReadInt32();
_numberReturned = buffer.ReadInt32();
if ((_responseFlags & ResponseFlags.CursorNotFound) != 0)
{
throw new MongoQueryException("Cursor not found.");
}
if ((_responseFlags & ResponseFlags.QueryFailure) != 0)
{
BsonDocument document;
using (BsonReader bsonReader = new BsonBinaryReader(buffer, false, _readerSettings))
{
document = (BsonDocument)BsonDocumentSerializer.Instance.Deserialize(bsonReader, typeof(BsonDocument), null);
}
var err = document.GetValue("$err", "Unknown error.");
var message = string.Format("QueryFailure flag was {0} (response was {1}).", err, document.ToJson());
throw new MongoQueryException(message, document);
}
_documents = new List <TDocument>(_numberReturned);
for (int i = 0; i < _numberReturned; i++)
{
BsonBuffer sliceBuffer;
if (buffer.ByteBuffer is MultiChunkBuffer)
{
// we can use slightly faster SingleChunkBuffers for all documents that don't span chunk boundaries
var position = buffer.Position;
var length = buffer.ReadInt32();
var slice = buffer.ByteBuffer.GetSlice(position, length);
buffer.Position = position + length;
sliceBuffer = new BsonBuffer(slice, true);
}
else
{
sliceBuffer = new BsonBuffer(buffer.ByteBuffer, false);
}
using (var bsonReader = new BsonBinaryReader(sliceBuffer, true, _readerSettings))
{
var document = (TDocument)_serializer.Deserialize(bsonReader, typeof(TDocument), serializationOptions);
_documents.Add(document);
}
}
}
// protected methods
protected void ReadMessageHeaderFrom(BsonBuffer buffer)
{
_messageLength = buffer.ReadInt32();
_requestId = buffer.ReadInt32();
_responseTo = buffer.ReadInt32();
if ((MessageOpcode)buffer.ReadInt32() != _opcode)
{
throw new FileFormatException("Message header opcode is not the expected one.");
}
}
// internal methods
internal void ReadBodyFrom(BsonBuffer buffer)
{
var serializationOptions = _serializationOptions;
if (serializationOptions == null && typeof(TDocument) == typeof(BsonDocument))
{
serializationOptions = DocumentSerializationOptions.AllowDuplicateNamesInstance;
}
_documents = new List <TDocument>(_numberReturned);
for (int i = 0; i < _numberReturned; i++)
{
BsonBuffer sliceBuffer;
if (buffer.ByteBuffer is MultiChunkBuffer)
{
// we can use slightly faster SingleChunkBuffers for all documents that don't span chunk boundaries
var position = buffer.Position;
var length = buffer.ReadInt32();
var slice = buffer.ByteBuffer.GetSlice(position, length);
buffer.Position = position + length;
sliceBuffer = new BsonBuffer(slice, true);
}
else
{
sliceBuffer = new BsonBuffer(buffer.ByteBuffer, false);
}
using (var bsonReader = new BsonBinaryReader(sliceBuffer, true, _readerSettings))
{
var document = (TDocument)_serializer.Deserialize(bsonReader, typeof(TDocument), serializationOptions);
_documents.Add(document);
}
}
}
// internal methods
internal void ReadFrom(BsonBuffer buffer, IBsonSerializationOptions serializationOptions)
{
if (serializationOptions == null && typeof(TDocument) == typeof(BsonDocument))
{
serializationOptions = DocumentSerializationOptions.AllowDuplicateNamesInstance;
}
var messageStartPosition = buffer.Position;
ReadMessageHeaderFrom(buffer);
_responseFlags = (ResponseFlags)buffer.ReadInt32();
_cursorId = buffer.ReadInt64();
_startingFrom = buffer.ReadInt32();
_numberReturned = buffer.ReadInt32();
using (BsonReader bsonReader = BsonReader.Create(buffer, _readerSettings))
{
if ((_responseFlags & ResponseFlags.CursorNotFound) != 0)
{
throw new MongoQueryException("Cursor not found.");
}
if ((_responseFlags & ResponseFlags.QueryFailure) != 0)
{
var document = (BsonDocument)BsonDocumentSerializer.Instance.Deserialize(bsonReader, typeof(BsonDocument), null);
var err = document.GetValue("$err", "Unknown error.");
var message = string.Format("QueryFailure flag was {0} (response was {1}).", err, document.ToJson());
throw new MongoQueryException(message, document);
}
_documents = new List <TDocument>(_numberReturned);
while (buffer.Position - messageStartPosition < MessageLength)
{
var document = (TDocument)BsonSerializer.Deserialize(bsonReader, typeof(TDocument), serializationOptions);
_documents.Add(document);
}
}
}
internal void ReadFrom(
BsonBuffer buffer
)
{
var messageStartPosition = buffer.Position;
ReadMessageHeaderFrom(buffer);
responseFlags = (ResponseFlags)buffer.ReadInt32();
cursorId = buffer.ReadInt64();
startingFrom = buffer.ReadInt32();
numberReturned = buffer.ReadInt32();
var settings = new BsonBinaryReaderSettings {
MaxDocumentSize = connection.ServerInstance.MaxDocumentSize
};
using (BsonReader bsonReader = BsonReader.Create(buffer, settings)) {
if ((responseFlags & ResponseFlags.CursorNotFound) != 0)
{
throw new MongoQueryException("Cursor not found.");
}
if ((responseFlags & ResponseFlags.QueryFailure) != 0)
{
var document = BsonDocument.ReadFrom(bsonReader);
var err = document["$err", null].AsString ?? "Unknown error.";
var message = string.Format("QueryFailure flag set: {0} (response: {1})", err, document.ToJson());
throw new MongoQueryException(message);
}
documents = new List <TDocument>(numberReturned);
while (buffer.Position - messageStartPosition < messageLength)
{
var document = BsonSerializer.Deserialize <TDocument>(bsonReader);
documents.Add(document);
}
}
}
