elasticsearch - Spring Data Elasticsearch嵌套字段多匹配查询

Question

我将 elasticsearch 与 spring-data-elastic 结合使用。并尝试使用多重搜索。问题是在使用类字段搜索 wprking 时，它不适用于嵌套字段。我的映射如下所示

{
    "archieve": {
        "mappings": {
            "author": {
                "properties": {
                    "books": {
                        "type": "nested",
                        "properties": {
                            "id": {
                                "type": "long"
                            },
                            "name": {
                                "type": "string",
                                "analyzer": "standard"
                            }
                        }
                    },
                    "id": {
                        "type": "long"
                    },
                    "firstName": {
                        "type": "string",
                        "analyzer": "standard"
                    },
                    "lastName": {
                        "type": "string",
                        "analyzer": "standard"
                    }
                }
            }
        }
    }
}

我有一个带有 searchQuery 的端点，例如:

  @GetMapping(value = "/es/archieve/multi/{keyword}")
  public Page<Author> getBrandMulti(@PathVariable String keyword, Pageable pageable) {

      SearchQuery searchQuery = new NativeSearchQueryBuilder()
                      .withQuery(QueryBuilders.multiMatchQuery(keyword)
                              .field("firstName", 1.2f)
                              .field("books.name", 1.1f)
                              .type(MultiMatchQueryBuilder.Type.CROSS_FIELDS)
                              .fuzziness(Fuzziness.TWO)
                      )
                      .withIndices("archieve")
                      .withTypes("author")
                      .withPageable(pageable)
                      .build();

      return elasticsearchTemplate.queryForPage(searchQuery, Author.class);
  }

问题是查询不适用于嵌套字段。有什么建议，问候？

更新

实际上嵌套对象可以查询为

NativeSearchQueryBuilder()
    .withQuery(QueryBuilders.nestedQuery("books", 
         QueryBuilders.termQuery("books.name", searchKey)))

有没有办法像这样连接两个查询

NativeSearchQueryBuilder()
    .withQuery(Query1)
    .withQuery(Query1)
    .build();

Answer 1

ES 嵌套对象

作为the document说，当你查询嵌套字段时，你必须使用嵌套查询:

Because nested objects are indexed as separate hidden documents, we can’t query them directly. Instead, we have to use the nested query to access them:

Spring 数据

回到 spring 数据，我更喜欢使用 Query 的方式，IMO，更具可读性:

@Query(" {" +
        " \"bool\": {\n" +
        "     \"should\": [\n" +
        "       {\n" +
        "         \"multi_match\": {\n" +
        "           \"query\": \"?0\",\n" +
        "           \"fields\": [\"firstName\"]\n" +
        "         }\n" +
        "       },\n" +
        "       {\n" +
        "         \"nested\": {\n" +
        "           \"path\": \"books\",\n" +
        "           \"query\": {\n" +
        "             \"match\": {\n" +
        "               \"books.name\": \"?0\"\n" +
        "             }}\n" +
        "         }\n" +
        "       } ]\n" +
        "  }" +
        "}")
Page<EsBrand> findByNameOrBooks(String info, Pageable pageable);

您可以将此签名放在您的 repo 接口(interface)中，spring 将实现一个代理来完成其他工作。