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I am using Jongo to query my MongoDB with Java. My question is "How can I save a sum into a Class attribute?"

I have a Class OffersByPostalCode 

public class OffersByPostalCode {

private String _id;
private String offers;

public OffersByPostalCode(String _id, String offers) {
    this._id = _id;
    this.offers = offers;
 //Getters, setters & toString are here 
}

SO, I'am trying to query my DB and get Offers group by postalCode Using Jongo, here is the query : 

list_job = collection.aggregate("{$group:{ _id :'$postalCode',offers:{'$sum':1}}}).as(OffersByPostalCode.class);

The problem is that when I get my result from the query I have my postalCode but the offers attribute which is the sum of offers by postalCode is always NULL. It works fine in MongoDB shell.

Josh Gagnon
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Alaa-GI
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1 Answers1

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Did you try

`list_job = collection.aggregate("{$group:{ _id :'$postalCode',offers:{$sum:1}}}).as(OffersByPostalCode.class);`
iMysak
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