> db.testcollection.find()

{ "_id" : 1, "priority" : 2, "inprogress" : false, "name" : "abc" }

> db.runCommand({
... findandmodify : "testcollection",
... query :

{ _id : 1 }

,
... sort :

{ priority : -1 }

,
... update : { $set :

{ inprogress : true, started : Date() }

},
... new : true
... })
{
"value" :

{ "_id" : 1, "priority" : 2, "inprogress" : false, "name" : "abc" }

,
"ok" : 1
}
> db.testcollection.find()

{ "_id" : 1, "priority" : 2, "inprogress" : false, "name" : "abc" }

>