public void writeNativeObjectId(org.bson.types.ObjectId objectId) throws IOException {
_writeArrayFieldNameIfNeeded();
_verifyValueWrite("write datetime");
_buffer.putByte(_typeMarker, BsonConstants.TYPE_OBJECTID);
// ObjectIds have their byte order flipped
int time = ByteOrderUtil.flip(Long.valueOf(objectId.getTime() / 1000L).intValue());
int machine = ByteOrderUtil.flip(objectId.getMachine());
int inc = ByteOrderUtil.flip(objectId.getInc());
_buffer.putInt(time);
_buffer.putInt(machine);
_buffer.putInt(inc);
flushBuffer();
}
/**
* Reads a ObjectID from the input stream
*
* @return the ObjectID
* @throws IOException if the ObjectID could not be read
*/
protected ObjectId readObjectId() throws IOException {
int time = ByteOrderUtil.flip(_in.readInt());
int machine = ByteOrderUtil.flip(_in.readInt());
int inc = ByteOrderUtil.flip(_in.readInt());
return new ObjectId(time, machine, inc);
}