public IEnumerator <BsonDocument> GetEnumerator()
{
AggregateResult result;
if (_immediateExecutionResult != null)
{
result = _immediateExecutionResult;
_immediateExecutionResult = null;
}
else
{
result = _collection.RunAggregateCommand(_operations, _options);
}
if (result.CursorId != 0)
{
var connectionProvider = new ServerInstanceConnectionProvider(result.ServerInstance);
var readerSettings = new BsonBinaryReaderSettings
{
Encoding = _collection.Settings.ReadEncoding ?? MongoDefaults.ReadEncoding,
GuidRepresentation = _collection.Settings.GuidRepresentation
};
return(new CursorEnumerator <BsonDocument>(
connectionProvider,
_collection.FullName,
result.ResultDocuments,
result.CursorId,
_options.BatchSize ?? 0,
0,
readerSettings,
BsonDocumentSerializer.Instance,
null));
}
else if (result.OutputNamespace != null)
{
var ns = result.OutputNamespace;
var firstDot = ns.IndexOf('.');
var databaseName = ns.Substring(0, firstDot);
var collectionName = ns.Substring(firstDot + 1);
var database = _collection.Database.Server.GetDatabase(databaseName);
var collectionSettings = new MongoCollectionSettings {
ReadPreference = ReadPreference.Primary
};
var collection = database.GetCollection <BsonDocument>(collectionName, collectionSettings);
return(collection.FindAll().GetEnumerator());
}
else if (result.ResultDocuments != null)
{
return(result.ResultDocuments.GetEnumerator());
}
else
{
throw new NotSupportedException("Unexpected response to aggregate command.");
}
}
// public methods
public IEnumerator <BsonDocument> GetEnumerator()
{
if (_outputCollectionName != null)
{
var database = _collection.Database;
var collectionSettings = new MongoCollectionSettings {
ReadPreference = ReadPreference.Primary
};
var collection = database.GetCollection <BsonDocument>(_outputCollectionName, collectionSettings);
return(collection.FindAll().GetEnumerator());
}
var result = _collection.RunAggregateCommand(_args);
if (result.CursorId != 0)
{
var connectionProvider = new ServerInstanceConnectionProvider(result.ServerInstance);
var readerSettings = new BsonBinaryReaderSettings
{
Encoding = _collection.Settings.ReadEncoding ?? MongoDefaults.ReadEncoding,
GuidRepresentation = _collection.Settings.GuidRepresentation
};
return(new CursorEnumerator <BsonDocument>(
connectionProvider,
_collection.FullName,
result.ResultDocuments,
result.CursorId,
_args.BatchSize ?? 0,
0,
readerSettings,
BsonDocumentSerializer.Instance,
null));
}
else if (result.ResultDocuments != null)
{
return(result.ResultDocuments.GetEnumerator());
}
else
{
throw new NotSupportedException("Unexpected response to aggregate command.");
}
}
