Spring - mongodb - aggregation - The 'cursor' option is required

Question

Executing the following aggregation pipeline:

public void getMostLikedItems () {
        UnwindOperation unwind = Aggregation.unwind(\"favoriteItems\");
             


        

Answer 1

'The 'cursor' option is required, except for aggregate with the explain argument'

This type of error raised in spring data when you are using incompatible versions of MongoDB and Spring-data-mongo.

Though you can get rawResults with explain, cursor arguments.

Aggregation aggregation = Aggregation.newAggregation(group).withOptions( new AggregationOptions(allowDiskUse, explain, cursor));

//try with .withOptions( new AggregationOptions(true,false,new Document()));

Passing by commented Arguments you will get result in rawResult but it will not be mapped in given outType.class.

To get mapped result you have to download right dependency of spring-data version according to your MongoDb version.

EDIT

I have used Spring version 5.0.3 and Spring-data-mongoDB version 2.0.3 It is working Fine.