create mongoId

testoi.clj

(ns testoi)

;; http://api.mongodb.org/java/2.6.3/org/bson/types/ObjectId.html

testoi> (import 'org.bson.types.ObjectId)
org.bson.types.ObjectId

testoi> (ObjectId. "d1700430f92f194fad7ce85a")
#<ObjectId d1700430f92f194fad7ce85a>

;;massageToObjectId seems to be more allowing on what it receives, but still picky
testoi> (ObjectId/massageToObjectId "d1700430f92f194fad7ce85a")
#<ObjectId d1700430f92f194fad7ce85a>

testoi> (ObjectId/massageToObjectId "aaaabbbbccccddddeeeeffff0000")
nil

;; because this is not valid according to the oi schema
;; A globally unique identifier for objects.
;; Consists of 12 bytes, divided as follows:
;; 0-3 time (4b)
;; 4-5 machine 
;; 7-8 pid
;; 9-11 inc
;;or something.