/// <summary>
/// Remove document _id if contains a "empty" value (checks for autoId bson type)
/// </summary>
private bool RemoveDocId(BsonDocument doc)
{
if (doc.TryGetValue("_id", out var id))
{
// check if exists _autoId and current id is "empty"
if ((_autoId == BsonAutoId.Int32 && (id.IsInt32 && id.AsInt32 == 0)) ||
(_autoId == BsonAutoId.ObjectId && (id.IsNull || (id.IsObjectId && id.AsObjectId == ObjectId.Empty))) ||
(_autoId == BsonAutoId.Guid && id.IsGuid && id.AsGuid == Guid.Empty) ||
(_autoId == BsonAutoId.Int64 && id.IsInt64 && id.AsInt64 == 0))
{
// in this cases, remove _id and set new value after
doc.Remove("_id");
return(true);
}
}
return(false);
}