[elasticsearch笔记] Scripting

最新推荐文章于 2024-08-21 12:20:32 发布

箭飞天

最新推荐文章于 2024-08-21 12:20:32 发布

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分类专栏： elasticsearch

本文链接：https://blog.youkuaiyun.com/weixin_43834662/article/details/97642440

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本文深入探讨了Elasticsearch中使用的脚本语言，包括painless、expression和mustache，通过具体示例展示了如何利用这些脚本进行文档操作、搜索优化及字段计算，为用户提供了一种高效的数据处理和检索手段。

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notes

支持脚本：painless ，expression , mustache, java。点击详情查看

demo

painless

PUT script_text_v1
{
 "mappings": {
   "properties": {
     "title": {
       "type": "text"
     },
     "first_name": {
       "type": "text",
       "store": true
     },
     "last_name": {
       "type": "text",
       "store": true
     }
   }
 }
}

PUT script_text_v1/_doc/1?refresh
{
 "title": "Mr",
 "first_name": "Barry",
 "last_name": "White"
}

GET script_text_v1/_search
{
 "script_fields": {
   "source": {
     "script": {
       "lang": "painless",
       "source": "params._source.title + ' ' + params._source.first_name + ' ' + params._source.last_name" 
     }
   },
   "stored_fields": {
     "script": {
       "lang": "painless",
       "source": "params._fields['first_name'].value + ' ' + params._fields['last_name'].value"
     }
   }
 }
}

expression

GET kibana_sample_data_logs/_search
{
 "script_fields": {
   "double_bytes": {
     "script": {
       "lang": "expression",
       "source": "doc['bytes'] * multiplier",
       "params": {
         "multiplier":2
       }
     }
   }
 }
}

PUT script_text/_doc/1?refresh
{
 "text": "quick brown fox",
 "popularity": 1
}

PUT script_text/_doc/2?refresh
{
 "text": "quick fox",
 "popularity": 5
}

GET script_text/_search
{
 "query": {
   "function_score": {
     "query": {
       "match": {
         "text": "quick brown fox"
       }
     },
     "script_score": {
       "script": {
         "lang": "expression",
         "source": "_score * doc['popularity']"
       }
     }
   }
 }
}

GET script_text/_search
{
 "script_fields": {
   "popularity": {
     "script": {
       "lang": "expression",
       "source": "doc['popularity']*markup",
       "params": {
         "markup":0.2
       }
     }
   }
 }
}

PUT script_text_v1
{
 "mappings": {
   "properties": {
     "title": { 
       "type": "text"
     },
     "first_name": {
       "type": "text",
       "store": true
     },
     "last_name": {
       "type": "text",
       "store": true
     }
   }
 }
}