Add inner_hits support to the collapse field in NativeSearchQuery [DATAES-939]

[spring-projects-issues]

sothawo opened DATAES-939 and commented

Currently NativeSearchQuery supports a collapse field by accepting a String. This should be extended to also allow to define inner_hits and other parameters (https://www.elastic.co/guide/en/elasticsearch/reference/7.9/collapse-search-results.html#expand-collapse-results)

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Reference URL: https://stackoverflow.com/questions/64106687/spring-data-elasticsearch-is-inner-hit-supported-at-root-level-on-query

[saidkilicaslan]

Hi, is there any workaround to get inner hits with collapse field for now?

[sothawo]

NO, this is still an open issue.

[saidkilicaslan]

I did the workaround.
I'm using JestElasticsearchTemplate as client and I copied NativeQueryBuilder with an extra method:

public ExtendedNativeQueryBuilder withCollapse(CollapseBuilder collapseBuilder){ this.collapseBuilder = collapseBuilder; return this; }

and using the client with the new method.

((JestElasticsearchTemplate) elasticsearchTemplate).query(new ExtendedNativeQueryBuilder() .withIndices("indice").withFilter(QueryBuilders.matchAllQuery()) .withCollapse(new CollapseBuilder("collapse_field").setInnerHits(new InnerHitBuilder("inner_hit_name"))) .build(), extractor);

as a query result, I'm able to retrieve innert_hits inside the JSON object.