Spring data MongoDb custom query

Question

I have a project in spring boot and using mongoDb for database.

Now how do make this query work

db.mycoll.aggregate([{ $sample: { size: 1 } }])

How do I convert into custom query using @Query annotation in spring data mongodb?

@Query annotation supports regular find queries not aggregate queries. — s7vr
– s7vr, Commented Oct 25, 2018 at 15:40
@Veeram any idea for this then - db.person.find().limit(1).skip(10) — ts178
– ts178, Commented Oct 25, 2018 at 15:45

Nishant Bhardwaz · Accepted Answer · 2018-10-26 07:42:54Z

1

You can make a custom repo to achieve the same using mongoTemplate.

    SampleOperation sample = Aggregation.sample(1);
        Aggregation aggregation = newAggregation(sample);
        AggregationResults<T> result =
            this.mongoTemplate.aggregate(aggregation, "CollectionToSearch","Return-type-object");
    return result.getMappedResults();

answered Oct 26, 2018 at 7:42

Nishant Bhardwaz

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