fixed: fail in mongo 1.x  refs #1317
fixed: fail in mongo 1.x  refs #1317

mallowlabs/AsakusaSatellite,codefirst/AsakusaSatellite,codefirst/AsakusaSatellite,codefirst/AsakusaSatellite,mallowlabs/AsakusaSatellite,mallowlabs/AsakusaSatellite,codefirst/AsakusaSatellite