> db.foo.ensureIndex({partition:1, a:"text"})
> db.foo.insert({a:"word",partition:[0,1]})
> db.foo.runCommand("text",{search:"word",filter:{partition:0}})
{
	"queryDebugString" : "word||||||",
	"language" : "english",
	"results" : [ ],
	"stats" : {
		"nscanned" : 0,
		"nscannedObjects" : 0,
		"n" : 0,
		"timeMicros" : 91
	},
	"ok" : 1
}
> db.foo.runCommand("text",{search:"word",filter:{partition:[0,1]}})
{
	"queryDebugString" : "word||||||",
	"language" : "english",
	"results" : [
		{
			"score" : 1.1,
			"obj" : {
				"_id" : ObjectId("50edc79c408f7fa6a0a2c9ee"),
				"a" : "word",
				"partition" : [
					0,
					1
				]
			}
		}
	],
	"stats" : {
		"nscanned" : 1,
		"nscannedObjects" : 1,
		"n" : 1,
		"timeMicros" : 98
	},
	"ok" : 1
}
>