使用NESTElasticSearch按多个值搜索

如何解决使用NESTElasticSearch按多个值搜索

我有一个名为“ 广告系列”的索引，其中包含以下记录：

"hits" : [
  {
    "_index" : "campaigns","_id" : "cf08b05c-c8b5-45cb-bca8-17267c3613fb","_source" : {
      "PublisherId" : 1,"CurrentStatus" : "Pending"
    }
  },{
    "_index" : "campaigns","_id" : "39436cb3-483e-4fb4-92e4-4e06ecad27a1","CurrentStatus" : "Approved"
    }
  },"_id" : "21436cb1-583e-4fb4-92e4-4e06ecad23a2","CurrentStatus" : "Rejected"
    }
  }
]

我想获取所有广告系列，其状态为“ PublisherId = 1 ”，且状态为“ 已批准，已拒绝”。像这样：

var statuses = new[] {CampaignStatus.Approved,CampaignStatus.Rejected};
campaigns.Where(c=> c.PublisherId == 1 && statuses.Contains(c.CurrentStatus)).ToList();

如何使用nesT运行此查询？

预期结果：

"hits" : [
  {
    "_index" : "campaigns","CurrentStatus" : "Rejected"
    }
  }
]

解决方法

我不知道nest的语法，但是由于ES是基于REST的，提供了JSON格式的工作示例查询，您可以将其转换为nest代码。

索引映射

{
    "mappings": {
        "properties": {
            "PublisherId": {
                "type": "integer"
            },"CurrentStatus": {
                "type": "text"
            }
        }
    }
}

为所有三个示例文档建立索引并在下面的搜索查询中使用

{
    "query": {
        "bool": {
            "must": {
                "term": {
                    "PublisherId": 1
                }
            },"should": [
                {
                    "match": {
                        "CurrentStatus": "Rejected"
                    }
                },{
                     "match": {
                        "CurrentStatus": "Approved"
                    }
                }
            ],"minimum_should_match" : 1
        }
    }
}

搜索结果

"hits": [
            {
                "_index": "stof_63968525","_type": "_doc","_id": "1","_score": 1.9808291,"_source": {
                    "PublisherId": 1,"CurrentStatus": "Approved"
                }
            },{
                "_index": "stof_63968525","_id": "3","CurrentStatus": "Rejected"
                }
            }
        ]

请注意使用minimum_should_match会迫使状态Rejected和Approved中的至少一个匹配并引用bool query in ES来理解查询构造。

,

您尝试过吗？

            QueryContainer queryAnd = new TermQuery() { Field = "PublisherId",Value = 1 };
            QueryContainer queryOr = new TermQuery() { Field = "CurrentStatus",Value = "Approved" };
                           queryOr |= new TermQuery() { Field = "CurrentStatus",Value = "Rejected" };
            QueryContainer queryMain = queryAnd & queryOr;

            ISearchResponse<campaigns> searchReponse = elasticClient.Search<campaigns>(s => s
                .Query(q2 => q2
                            .Bool(b => b
                            .Should(queryMain)
                        )));