ElasticSearch数据类型Boolean介绍

xdd

发布于 2022-07-12 14:23:38

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文章被收录于专栏：java技术鸡汤java技术鸡汤

本文主要介绍一下关于ES的boolean类型，希望对大家理解和使用ES有帮助。

Boolean Field 类型介绍：

Boolea n Field是接受JSON true或者false的值，也接受可以被转为true或者false的字符串

false值：false,"false",""
true值：true,"true"

例子：

curl -X PUT "localhost:9200/my-index-000001?pretty" -H 'Content-Type: application/json' -d'
{
  "mappings": {
    "properties": {
      "is_published": {
        "type": "boolean"
      }
    }
  }
}
'

curl -X POST "localhost:9200/my-index-000001/_doc/1?pretty" -H 'Content-Type: application/json' -d'
{
  "is_published": "true" 
}
'

curl -X GET "localhost:9200/my-index-000001/_search?pretty" -H 'Content-Type: application/json' -d'
{
  "query": {
    "term": {
      "is_published": true 
    }
  }
}
'

通过上面的例子可以看出，创建了一个名为my-index-000001的文档，映射关系中有一个type为boolean的field为is_published。

下面是一个term查询，匹配is_published为true的文档。

curl -X POST "localhost:9200/my-index-000001/_doc/1?pretty" -H 'Content-Type: application/json' -d'
{
  "is_published": true
}
'

curl -X POST "localhost:9200/my-index-000001/_doc/2?pretty" -H 'Content-Type: application/json' -d'
{
  "is_published": false
}
'

curl -X GET "localhost:9200/my-index-000001/_search?pretty" -H 'Content-Type: application/json' -d'
{
  "aggs": {
    "publish_state": {
      "terms": {
        "field": "is_published"
      }
    }
  },
  "script_fields": {
    "is_published": {
      "script": {
        "lang": "painless",
        "source": "doc[\u0027is_published\u0027].value"
      }
    }
  }
}
'