Query array of embedded documents

Question

I have a list of documents like this saved in MongoDB:

{
    "_id" : "f9f44e87-4260-4699-99a6-af6b58b4fb7e",
    "address" : {},
    "lastUpdate" : "1414083484838",
    "listvalues" : {},
    "userModels" : {
        "5067" : {            
            "generated_date_timestamp" : NumberLong(1413985161866),
            "model_id" : 5067,
            "score_id" : {
                "0" : {
                    "score_level_id" : 5267,
                    "confidence" : 0,
                    "generated_timestamp" : NumberLong(1413985161866)
                }
            },
            "points" : 0,
            "delta_points" : 0,
            "override_model" : 0,
            "override_score" : 0,
        },
        "5079" : {
            "generated_date_timestamp" : NumberLong(1413985161866),
            "model_id" : 5079,
            "score_id" : {
                "0" : {
                    "score_level_id" : 5292,
                    "confidence" : 0,
                    "generated_timestamp" : NumberLong(1413985161866)
                }
            },
            "points" : 0,
            "delta_points" : 0,
            "override_model" : 0,
            "override_score" : 0,
        },
        "5080" : {
            "_class" : "com.mediresource.datatype.model.bean.Model",
            "generated_date_timestamp" : NumberLong(1413985161866),
            "model_id" : 5080,
            "score_id" : {
                "0" : {
                    "score_level_id" : 5294,
                    "confidence" : 0,
                    "generated_timestamp" : NumberLong(1413985161866)
                }
            },
            "points" : 100,
            "delta_points" : 0,
            "override_model" : 0,
            "override_score" : 0,
        }
    }
}

And I need to count how many "userModels", for all _id in mongoDB, has more that 0 points. What I'm saving here is a Java HashMap defined as UserModels<Integer, Model>.

This is the query I was trying to use, but without success:

db.anonProfile.find(
   { "userModels": { $elemMatch: { "points":  { $gte: 0 } } } }
).size();

Any clue?

Answer 1

You can use it with spring-data mongodb like:

Criteria criteria=Criteria.where("userModels.points").gte(0));
Aggregration aggregration=newAggregration(unwind("userModels"),match(criteria),group("_id").count().as("param"));

But i can not understand why you are using the numbers under userModels.It is not good.Because of that i did not use the numbers under userModels.