MongoDB $agregate $push beberapa bidang di Java Spring Data

Anda dapat langsung meneruskan BasicDbObject ke salah satu tahap pipeline agregasi.

Aggregation agg = newAggregation(
            group("title").
            push(new BasicDBObject
                   ("version", "$version").append
                   ("author", "$author").append
                   ("dateAdded", "$dateAdded")).as("versions"));