How to create SubAggregation in new JAVA API Client

Elastic Stack Elasticsearch
,
2

Hello! I've left out some details, but this is roughly how to translate that kibana query using the new java client, dsl style:

        esClient.search(s -> s
                .index("demo-index")
                .query(q -> q
                    .constantScore(cs -> cs
                        .filter(fl -> fl
                            .bool(b -> b
                                .must(...)))))
                .aggregations("datesAggName",agg -> agg
                    .dateHistogram(dh -> dh
                        .field("endDate")
                        .calendarInterval(CalendarInterval.Day))
                        ...
                    .aggregations("datesSortedAgg",sub -> sub
                        .bucketSort(bs -> bs
                            .sort(...)
                            .size(1))
                        .aggregations("instancesAggName", subsub -> subsub
                            .topHits(...))))
                .sort(...)
            , Object.class);

Let me know if it works :slight_smile: