reactivemongo.api.commands.AggregationFramework
Performs a left outer join to an unsharded collection in the same database to filter in documents from the "joined" collection for processing .
MongoDB 3.2
LookupPipeline
the collection to perform the join with
the field from the documents input
the field from the documents in the from collection
from
the name of the new array field to add to the input documents
Performs a left outer join to an unsharded collection in the same database to filter in documents from the "joined" collection for processing .
MongoDB 3.2
LookupPipeline