public WriteConcernResult Execute(MongoConnection connection)
{
using (var buffer = new BsonBuffer(new MultiChunkBuffer(BsonChunkPool.Default), true))
{
var readerSettings = GetNodeAdjustedReaderSettings(connection.ServerInstance);
var writerSettings = GetNodeAdjustedWriterSettings(connection.ServerInstance);
var message = new MongoUpdateMessage(writerSettings, CollectionFullName, _checkElementNames, _flags, _query, _update);
message.WriteToBuffer(buffer);
return(SendMessageWithWriteConcern(connection, buffer, message.RequestId, readerSettings, writerSettings, WriteConcern));
}
}
// public methods
public WriteConcernResult Execute(MongoConnection connection)
{
var serverInstance = connection.ServerInstance;
if (serverInstance.Supports(FeatureId.WriteCommands) && _args.WriteConcern.Enabled)
{
var emulator = new UpdateOpcodeOperationEmulator(_args);
return(emulator.Execute(connection));
}
SendMessageWithWriteConcernResult sendMessageResult;
using (var stream = new MemoryStream())
{
var requests = _args.Requests.ToList();
if (requests.Count != 1)
{
throw new NotSupportedException("Update opcode only supports a single update request.");
}
var updateRequest = (UpdateRequest)requests[0];
var flags = UpdateFlags.None;
if (updateRequest.IsMultiUpdate ?? false)
{
flags |= UpdateFlags.Multi;
}
if (updateRequest.IsUpsert ?? false)
{
flags |= UpdateFlags.Upsert;
}
var maxDocumentSize = connection.ServerInstance.MaxDocumentSize;
var query = updateRequest.Query ?? new QueryDocument();
var message = new MongoUpdateMessage(WriterSettings, CollectionFullName, _args.CheckElementNames, flags, maxDocumentSize, query, updateRequest.Update);
message.WriteTo(stream);
sendMessageResult = SendMessageWithWriteConcern(connection, stream, message.RequestId, ReaderSettings, WriterSettings, WriteConcern);
}
return(WriteConcern.Enabled ? ReadWriteConcernResult(connection, sendMessageResult) : null);
}
