The text search, found that many results repeat, want to go to the heavy, how to do?
Now I try to use, distinct, but can only return to go to the column, heavy, not the whole object, and can't specify the result how to intercept,

Then use the aggregate, but encountered an error, com. Mongo. MongoCommandException: Command failed with error 40324 (Location40324) : 'Unrecognized pipeline stage name:' $text "'

Consult the: text search, and support group to heavy?