protected virtual void Dispose(bool disposing)
{
if (disposing)
{
if (!_disposed)
{
try
{
if (_cursorId != 0)
{
KillCursorAsync(_cursorId).GetAwaiter().GetResult();
}
}
catch
{
// ignore exceptions
}
if (_connectionSource != null)
{
_connectionSource.Dispose();
}
}
}
_disposed = true;
}
// constructors
public Cursor(
IConnectionSource connectionSource,
CollectionNamespace collectionNamespace,
BsonDocument query,
IReadOnlyList <TDocument> firstBatch,
long cursorId,
int batchSize,
int limit,
IBsonSerializer <TDocument> serializer,
MessageEncoderSettings messageEncoderSettings,
TimeSpan timeout,
CancellationToken cancellationToken)
{
_connectionSource = Ensure.IsNotNull(connectionSource, "connectionSource");
_collectionNamespace = Ensure.IsNotNull(collectionNamespace, "collectionNamespace");
_query = Ensure.IsNotNull(query, "query");
_firstBatch = Ensure.IsNotNull(firstBatch, "firstBatch");
_cursorId = cursorId;
_batchSize = Ensure.IsGreaterThanOrEqualToZero(batchSize, "batchSize");
_limit = Ensure.IsGreaterThanOrEqualToZero(limit, "limit");
_serializer = Ensure.IsNotNull(serializer, "serializer");
_messageEncoderSettings = messageEncoderSettings;
_timeout = timeout;
_cancellationToken = cancellationToken;
if (_limit == 0)
{
_limit = int.MaxValue;
}
if (_firstBatch.Count > _limit)
{
_firstBatch = _firstBatch.Take(_limit).ToList();
}
_count = _firstBatch.Count;
// if we aren't going to need the connection source we can go ahead and Dispose it now
if (_cursorId == 0)
{
_connectionSource.Dispose();
_connectionSource = null;
}
}