Spring Boot ElasticSearch API 사용하기

By | 2021년 10월 4일
Table of Content

Spring Boot ElasticSearch API 사용하기

Spring Boot ElasticSearch API 에 대한 문서가 잘 없어,
작업중인 소스코드를 공개합니다.

BoolQueryBuilder

    @Override
    public SearchResponseDto search(Map<String, String> params) throws UnsupportedEncodingException {

        ESRestaurantInfoSearchDto searchDto = new ESRestaurantInfoSearchDto(params);
        Pageable pageable = PageRequest.of(searchDto.getPageNo(), searchDto.getPageSize());

        BoolQueryBuilder filterBoolQueryBuilder = boolQuery();
        BoolQueryBuilder shouldBoolQueryBuilder = boolQuery();

        if ((searchDto.getLongitudeStart() != 0.0) && (searchDto.getLongitudeEnd() != 0.0)) {
            filterBoolQueryBuilder.filter(QueryBuilders
                    .rangeQuery("longitude")
                    .from(searchDto.getLongitudeStart())
                    .to(searchDto.getLongitudeEnd()));
        }

        if ((searchDto.getLatitudeStart() != 0.0) && (searchDto.getLatitudeEnd() != 0.0)) {
            filterBoolQueryBuilder.filter(QueryBuilders
                    .rangeQuery("latitude")
                    .from(searchDto.getLatitudeStart())
                    .to(searchDto.getLatitudeEnd()));
        }

        shouldBoolQueryBuilder
                .should(matchQuery("restaurant_name", searchDto.getQueryString()).operator(Operator.OR))
                .should(matchQuery("restaurant_name", searchDto.getQueryString()).operator(Operator.AND).boost(5.0f))
                .should(matchPhraseQuery("restaurant_name", searchDto.getQueryString()).boost(25.0f));

        NativeSearchQueryBuilder queryBuilder = new NativeSearchQueryBuilder();
        queryBuilder
                .withFilter(filterBoolQueryBuilder)
                .withPageable(pageable)
                .withQuery(shouldBoolQueryBuilder);

        SearchHits<ESRestaurantInfo> articles = operations
                .search(queryBuilder.build(), ESRestaurantInfo.class, IndexCoordinates.of("restaurant_info"));

        List<SearchHit<ESRestaurantInfo>> searchHitList = articles.getSearchHits();
        ArrayList<ESRestaurantInfo> list = new ArrayList<>();

        for (SearchHit<ESRestaurantInfo> item : searchHitList) {
            list.add(item.getContent());
        }
        List<Object> results = Arrays.asList(toDto(list).toArray());

        int totalCount = (int) articles.getTotalHits();

        return new SearchResponseDto(results, pageable, totalCount);
    }

쿼리 생성결과

GET /restaurant_info/_search
{
  "from": 0,
  "size": 100,
  "query": {
    "bool": {
      "should": [
        {
          "match": {
            "restaurant_name": {
              "query": "칼국수",
              "operator": "OR",
              "prefix_length": 0,
              "max_expansions": 50,
              "fuzzy_transpositions": true,
              "lenient": false,
              "zero_terms_query": "NONE",
              "auto_generate_synonyms_phrase_query": true,
              "boost": 1.0
            }
          }
        },
        {
          "match": {
            "restaurant_name": {
              "query": "칼국수",
              "operator": "AND",
              "prefix_length": 0,
              "max_expansions": 50,
              "fuzzy_transpositions": true,
              "lenient": false,
              "zero_terms_query": "NONE",
              "auto_generate_synonyms_phrase_query": true,
              "boost": 5.0
            }
          }
        },
        {
          "match_phrase": {
            "restaurant_name": {
              "query": "칼국수",
              "slop": 0,
              "zero_terms_query": "NONE",
              "boost": 25.0
            }
          }
        }
      ],
      "adjust_pure_negative": true,
      "boost": 1.0
    }
  },
  "post_filter": {
    "bool": {
      "filter": [
        {
          "range": {
            "longitude": {
              "from": 126.93452195073536,
              "to": 126.94537104338305,
              "include_lower": true,
              "include_upper": true,
              "boost": 1.0
            }
          }
        },
        {
          "range": {
            "latitude": {
              "from": 37.48608721246216,
              "to": 37.49363416030283,
              "include_lower": true,
              "include_upper": true,
              "boost": 1.0
            }
          }
        }
      ],
      "adjust_pure_negative": true,
      "boost": 1.0
    }
  },
  "version": true,
  "explain": false
}

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