将 elasticsearch bool 查询转换为 Java

Question

GET feeds/_search
{
  "query": {
    "bool": {
      "should": [
        {
          "nested": {
            "path": "comment",
            "query": { 
              "match": {
                "comment.c_text": "hey"
              }
            },"inner_hits": {
              "highlight": {
                "require_field_match": "true"
                
              }
            }
          }
        },
        {
          "term": {
            "title": {
              "value": "hey"
            }
          }
        },
        {
          "term": {
            "body": {
              "value": "hey"
            }
          }
        }
      ]
    }
  }
}

I am new to Elasticsearch, I get my desired result in kibana now I want to use this query in my Java application as I want to use this bool search query into my spring-boot application.

Can anyone tell me how to convert this query into Java?

Answer 1

You can Java Rest client with ES 7.17.3 version using below dependancy

<dependency>
     <groupId>co.elastic.clients</groupId>
     <artifactId>elasticsearch-java</artifactId>
     <version>7.17.3</version>
</dependency>
<dependency>
     <groupId>com.fasterxml.jackson.core</groupId>
     <artifactId>jackson-databind</artifactId>
     <version>2.12.3</version>
</dependency>

Below is Java code:

Query bodyTermQuery = TermQuery.of(tq -> tq.field("body").value("hey"))._toQuery();
Query titleTermQuery = TermQuery.of(tq -> tq.field("title").value("hey"))._toQuery();

Query matchQuery = MatchQuery.of(mq -> mq.field("comment.c_text").query("hey"))._toQuery();

Query nestedQuery = NestedQuery.of(nq -> nq.path("comment").query(matchQuery)
                .innerHits(ih -> ih.highlight(h -> h.requireFieldMatch(true))))._toQuery();

SearchResponse<Object> response = client.search(
                s -> s.index("feeds").query(q -> q.bool(b -> b.should(nestedQuery, titleTermQuery, bodyTermQuery))),
                Object.class);