Cara memfilter array dalam dokumen Mongodb menggunakan Spring

Seperti yang Anda katakan elemMatch hanya akan mengambil objek pertama dalam array sehingga Anda harus menggunakan agregat masa depan untuk mencapai hasil Anda

    MatchOperation match = Aggregation.match(Criteria.where("_id.teacherId").is("1").and("groups.students").in(11));
    UnwindOperation unwind = Aggregation.unwind("groups");
    GroupOperation group = Aggregation.group("_id").push("groups").as("groups").first("points").as("points");
    Aggregation aggregation = Aggregation.newAggregation(unwind, match, group);
    AggregationResults<BasicDBObject> groupResults = mongoTemplate.aggregate(aggregation,
                    CustomGroupsDocument.class, BasicDBObject.class);
    List<BasicDBObject> result = groupResults.getMappedResults();