Nested elasticsearch query for java QueryBuilders

Question

I am trying to achieve this elasticsearch query in java querybuilder for elasticsearch. But i am not able to get the equivalent results. Can anyone help with this.

 GET /XX/XX/_search
    {
       "query": {
          "bool": {
             "must": [
                {
                   "nested": {
                      "path": "XX",
                      "filter": {
                         "term": {
                            "A": "7:140453136:T"
                         }
                      }
                   }
                },
                {
                   "nested": {
                      "path": "XX",
                      "filter": {
                         "term": {
                            "B": "RF"
                         }
                      }
                   }
                },
                {
                   "nested": {
                      "path": "XX",
                      "filter": {
                         "term": {
                            "C": "RFFF"
                         }
                      }
                   }
                }
             ]
          }
       }
    }

The code which i tried:

   QueryBuilders qbWithArguments = QueryBuilders.boolQuery()
                    .must(QueryBuilders.termQuery("A", "RF"))
                    .must(QueryBuilders.termQuery("B", "EF"))
                    .must(QueryBuilders.termQuery("C", "RF"));

Answer 1

You need to add nested query too. Use below code:

QueryBuilders.boolQuery().must(nestedQuery("XX", FilterBuilders.termFilter("A","RF")))
                             .must(nestedQuery("XX", FilterBuilders.termFilter("B","EF")))
                             .must(nestedQuery("XX", FilterBuilders.termFilter("C","RF")))

For higher versions you can use :

QueryBuilders.boolQuery().must(nestedQuery("XX", QueryBuilders.boolQuery()
           .should(QueryBuilders.termQuery("A","RF"))
           .should(QueryBuilders.termQuery("B","EF"))
           .should(QueryBuilders.termQuery("C","RF"))
           .minimumShouldMatch("1")))

Notes: In 6.7, even if the doc stayed that ScoreMode is optional, you may need to provide this param when using the java QueryBuilders.