Elasticsearch:模式分析器不起作用 [英] Elasticsearch: Pattern analyser not working

问题描述

这是我指定的模式分析器的映射...

{
  "settings": {
    "number_of_shards": 1,
    "number_of_replicas": "0",
    "analysis": {
      "analyzer": {
        "semi_colon_analyzer": {
          "type": "pattern",
          "pattern": ";"
        }
      }
    }
  },
  "mappings": {
    "test": {
      "properties": {
        "courseintakes": {
          "type": "text",
          "analyzer": "semi_colon_analyzer",
          "search_analyzer": "semi_colon_analyzer"
        },
        "course_id": {
          "type": "integer"
        }
      }
    }
  }
}

这是我要索引的示例数据...

{
    "course_id": 1,
    "courseintakes": "Trimester 1; Trimester 2; Trimester 3"
}, {
    "course_id": 2,
    "courseintakes": "Trimester 1; Trimester 2"
}, {
    "course_id": 3,
    "courseintakes": "Trimester 2; Trimester 3"
}, {
    "course_id": 4,
    "courseintakes": "Trimester 1; Trimester 3"
}, {
    "course_id": 5,
    "courseintakes": "Trimester 3"
}

由于某种原因，我的码型分析器无法工作 ....当我测试分析器时，即 http://xx.xxx.xx.xxx:9200/all_test/_analyze?filter=semi_colon_analyzer&text= 'Trimester 1'

For some reason, my pattern analyser is not working .... When I test the analyser i.e. http://xx.xxx.xx.xxx:9200/all_test/_analyze?filter=semi_colon_analyzer&text='Trimester 1'

我得到了这个....(代替令牌":孕期1" )

I get this .... (instead of "token": "trimester 1")

{
  "tokens": [
    {
      "token": "trimester",
      "start_offset": 1,
      "end_offset": 10,
      "type": "<ALPHANUM>",
      "position": 0
    },
    {
      "token": "1",
      "start_offset": 11,
      "end_offset": 12,
      "type": "<NUM>",
      "position": 1
    }
  ]
}

我要做的是，当某人搜索第三个学期或第三个学期时，它应该返回ID为1、2、3和4的课程，而不是5 >.

What I am trying to do is that when someone search on Trimester 1 or Trimester 2, it should return course with id 1, 2, 3 and 4 but not 5.

如果某人在第三个学期或第三个学期进行搜索，则它应该返回ID为1、2、3、4和5的课程，即所有课程.

If someone search on Trimester 1 or Trimester 3, it should return course with id 1, 2, 3, 4 and 5 i.e. all courses.

实现此目标的最佳方法是什么?

What is the best way to achieve this ?

我已经尽力解释了这一点，但是如果仍然不清楚，请随时询问.

I have tried my best to explain this but if anything is still unclear, please feel free to ask.

非常感谢ES专家的帮助.

Any help from an ES expert is very appreciated.

谢谢

推荐答案

您需要将 analyzer 更改为以下内容:

You need to change your analyzer to following one:

 "analysis": {
  "analyzer": {
    "semi_colon_analyzer": {
      "type": "pattern",
      "pattern": "; "        <=== Note this space
    }
  }
}

您还运行了错误的查询来测试您的分析仪.您正在使用 filter ，而是需要使用 analyzer 键.正确的查询是

Also you are running wrong query to test your analyzer. You are using filter, instead you need to use analyzer key.Correct query is

/_analyze?analyzer=semi_colon_analyzer&text=Trimester 1; Trimester 3

希望这会有所帮助！

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