Nested sorting with path and filter in Spring Data Elastic Search

Question

I have this piece of code that I need to convert into spring-data-elastic-search.

 {
  "query": {
    "match_all": {}
  },
  "size": 10,
  "from": 0,
  "sort": [
    {
      "program.title.descriptions.value.keyword": {
        "order": "asc",
        "nested": {
          "path": "program.title.descriptions",
          "filter": {
            "match": {
              "program.title.descriptions.length": "LONG"
            }
          }
        }
      }
    }
  ]
}

I have tried up to this,

SortBuilder sb = SortBuilders.fieldSort(sortBy).order(sortOrder).setNestedSort(new NestedSortBuilder(nestedPath))

but I don't know how to add the "filter" part into the SortBuilder. If I try the below,

QueryBuilder matchFirst = QueryBuilders.boolQuery().filter(QueryBuilders.matchQuery("program.title.descriptions.length", "LONG"));
sb = SortBuilders.fieldSort(sortBy).order(sortOrder).setNestedSort(new NestedSortBuilder(nestedPath)).setNestedFilter(matchFirst);

it would say

java.lang.IllegalArgumentException: Setting both nested_path/nested_filter and nested not allowed
    at org.elasticsearch.search.sort.FieldSortBuilder.setNestedFilter(FieldSortBuilder.java:213)

Any ideas will be much appreciated.

Mat G · Accepted Answer · 2020-12-14 11:36:40Z

2

You need to set the filter inside the nested query. You can try

SortBuilder sb = SortBuilders.fieldSort(sortBy).order(sortOrder).setNestedSort(new NestedSortBuilder(nestedPath).setFilter(matchFirst));

answered Dec 14, 2020 at 11:36

Mat G

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