ElasticSearch Java Client查询嵌套对象

• Z时代
• 2024-01-10
• 分类：问答

如何转换这种查询。

{
  "query": {
    "nested": {
      "path": "consultations",
      "query": {
        "bool": {
          "must": [
            {
              "match": {
                "consultations.prescriptions": "alfuorism"
              }
            },
            {
              "match": {
                "consultations.Diagnosis": "Fever"
              }
            }
          ]
        }
      }
    }
  }
}

使用QueryBuilders进行Java客户端查询

回答：

以下Java代码将生成您的查询

public NestedQueryBuilder nestedBoolQuery(final Map<String, String> propertyValues, final String nestedPath) {
    BoolQueryBuilder boolQueryBuilder = QueryBuilders.boolQuery();
    Iterator<String> iterator = propertyValues.keySet().iterator();
    while (iterator.hasNext()) {
        String propertyName = iterator.next();
        String propertValue = propertyValues.get(propertyName);
        MatchQueryBuilder matchQuery = QueryBuilders.matchQuery(propertyName, propertValue);
        boolQueryBuilder.must(matchQuery);
    }
    return QueryBuilders.nestedQuery(nestedPath, boolQueryBuilder);
}

参数propertyValues为：

Map<String, String> propertyValues = new HashMap<String, String>();
propertyValues.put("consultations.prescriptions", "alfuorism");
propertyValues.put("consultations.Diagnosis", "Fever");

参数nestedPath为：

consultations

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