Question

我正在从事医疗项目，在那里我有多个问题以及附带的主题。问题是以下代码工作正常，但它不考虑＆＃39; must_not＆＃39;过滤器，但它必须＆＃39;工作正常条款。帮助我解决这个问题。

GET stopdata/_search
{
  "query": {
    "function_score": {
      "query": {
        "filtered": {
          "query": {
            "match": {
              "question": "Hello Dr. Iam suffering from fever with cough nd cold since 3 days"
            }
          }
        }
      },
      "filter": {
        "bool": {
          "must": [
            {
              "terms": {
                "topics": [
                  "fever",
                  "cough"
                ]
              }
            }
          ],
          "must_not": [
            {
              "terms": {
                "topics": [
                  "children",
                  "child",
                  "childrens health"
                ]
              }
            }
          ]
        }
      },
      "random_score": {}
    }
  },
  "highlight": {
    "fields": {
      "keyword": {}
    }
  }
}

另外，我需要将代码转换为Java，我正在尝试使用以下代码。

Set<String> mustNot = new HashSet<String>();
mustNot.add("child");
mustNot.add("children");
mustNot.add("childrens health");

Set<String> must = new HashSet<String>();
must.add("fever");
must.add("cough");

FunctionScoreQueryBuilder fsqb = new FunctionScoreQueryBuilder(QueryBuilders.matchQuery("question", "Hello Dr. Iam suffering from fever with cough nd cold since 3 days"));
fsqb.add(ScoreFunctionBuilders.randomFunction((new Date()).getTime()));

BoolQueryBuilder bqb = boolQuery()
        .mustNot(termsQuery("topics", mustNot));

SearchResponse response1 = client.prepareSearch("stopdata")
        .setQuery(fsqb)
        .execute()
        .actionGet();

System.out.println(response1.getHits().getTotalHits());

＆＃39; stopdata＆＃39;索引如下

{
   "stopdata": {
      "mappings": {
         "questions": {
            "properties": {
               "answers": {
                  "type": "string"
               },
               "id": {
                  "type": "long"
               },
               "question": {
                  "type": "string",
                  "analyzer": "my_english"
               },
               "relevantQuestions": {
                  "type": "long"
               },
               "topics": {
                  "type": "string"
               }
            }
         }
      }
   }
}

添加上述索引的样本数据

"question": "My son of age 8 months is suffering from cough and cold and fever. What treatment I have to follow?"
"topics": [
  "Cough",
  "Fever",
  "Hydration",
  "Nutrition",
  "Tens",
  "Childrens health"
]

"question": "Hi.My daughter, 4 years old , has on and of fever  with severe coughing and colds for 3 days now.She vomited as well last night.Do you think it's viral?"
"topics": [
  "Vomiting",
  "Flu",
  "Cough",
  "Fever",
  "Pneumonia",
  "Meningitis",
  "Tamiflu",
  "Incision",
  "Childrens health",
  "Oseltamivir"
]

"question": "If you have a fever of 101 with chills and sweats for 2 day with a slight cough, should you go to the drs or let is wear off?"
"topics": [
  "Cough",
  "Fever"
]

Answer 1

我看到的是整个filter部分放错地方，它应该放在filtered查询中，因为{{1}的根处没有filter元素元素（见official docs）。所以你的查询首先应该是这样的+你应该使用POST而不是GET，因为你要发送一个有效载荷：

function_score

现在用Java编写所有这些内容，就像这样：

POST stopdata/_search
{
  "query": {
    "function_score": {
      "query": {
        "filtered": {
          "query": {
            "match": {
              "question": "Hello Dr. Iam suffering from fever with cough nd cold since 3 days"
            }
          },
          "filter": {
            "bool": {
              "must": [
                {
                  "terms": {
                    "topics": [
                      "fever",
                      "cough"
                    ]
                  }
                }
              ],
              "must_not": [
                {
                  "terms": {
                    "topics": [
                      "children",
                      "child",
                      "childrens health"
                    ]
                  }
                }
              ]
            }
          }
        }
      },
      "random_score": {}
    }
  },
  "highlight": {
    "fields": {
      "keyword": {}
    }
  }
}

<强>更新

Set<String> mustNot = new HashSet<String>(); mustNot.add("child"); mustNot.add("children"); mustNot.add("childrens health"); Set<String> must = new HashSet<String>(); must.add("fever"); must.add("cough"); MatchQueryBuilder query = QueryBuilders.matchQuery("question", "Hello Dr. Iam suffering from fever with cough nd cold since 3 days"); BoolFilterBuilder filter = FilterBuilders.boolFilter() .must(FilterBuilders.termsFilter("topics", must)) .mustNot(FilterBuilders.termsFilter("topics", mustNot)); FilteredQueryBuilder fqb = QueryBuilders.filteredQuery(query, filter); FunctionScoreQueryBuilder fsqb = QueryBuilders.functionScoreQuery(fqb); fsqb.add(ScoreFunctionBuilders.randomFunction((new Date()).getTime())); SearchResponse response1 = client.prepareSearch("stopdata") .setQuery(fsqb) .execute() .actionGet(); System.out.println(response1.getHits().getTotalHits());与must_not不匹配的原因是因为分析了childrens health字段，因此topics被标记化并分析为两个标记{{1 }和Childrens health，因此在childrens上尝试health匹配不会产生任何结果。也许，分成两个术语会有所帮助：

terms

Elasticsearch必须不使用filter子句

1 个答案: