Search Template

Search Template可以用于程序后端层面和es后端层面解耦

DELETE _scripts/tmdb

GET _scripts/tmdb

#定义1个_script
POST _scripts/tmdb
{
  "script": {
    "lang": "mustache",
    "source": {
      "_source": [
        "title","overview"
      ],
      "size": 20,
      "query": {
        "multi_match": {
          "query": "{{q}}",
          "fields": ["title","overview"]
        }
      }
    }
  }
}

POST tmdb/_bulk
{ "index": { "_id": 1 }}
{ "title" :"title1", "overview" : "overview1","level":1 }
{ "index": { "_id": 2 }}
{ "title" :"title2", "overview" : "overview2","level":2 }
{ "index": { "_id": 3 }}
{ "title" :"title3", "overview" : "overview3" ,"level":3}

GET tmdb/_search
{}


#通过id引用_script的id，从而使用一个Search Template
POST tmdb/_search/template
{
    "id":"tmdb",
    "params": {
        "q": "title2 overview3"
    }
}


结果如下:
    "max_score" : 0.9808291,
    "hits" : [
      {
        "_index" : "tmdb",
        "_type" : "_doc",
        "_id" : "2",
        "_score" : 0.9808291,
        "_source" : {
          "overview" : "overview2",
          "title" : "title2"
        }
      },
      {
        "_index" : "tmdb",
        "_type" : "_doc",
        "_id" : "3",
        "_score" : 0.9808291,
        "_source" : {
          "overview" : "overview3",
          "title" : "title3"
        }
      }
    ]

Index Alas查询

新增索引别名

POST _aliases
{
  "actions": [
    {
      "add": {
        "index": "tmdb",
        "alias": "tmdb-latest"
      }
    }
  ]
}

根据索引别名搜索

POST tmdb-latest/_search
{
  "query": {
    "match_all": {}
  }
}

结果：
    "max_score" : 1.0,
    "hits" : [
      {
        "_index" : "tmdb",
        "_type" : "_doc",
        "_id" : "2",
        "_score" : 1.0,
        "_source" : {
          "title" : "title2",
          "overview" : "overview2",
          "level" : 2
        }
      },
      {
        "_index" : "tmdb",
        "_type" : "_doc",
        "_id" : "3",
        "_score" : 1.0,
        "_source" : {
          "title" : "title3",
          "overview" : "overview3",
          "level" : 3
        }
      }
    ]

新建索引别名,并制定条件

POST _aliases
{
  "actions": [
    {
      "add": {
        "index": "tmdb",
        "alias": "tmdb-latest-highlevel",
        "filter": {
          "range": {
            "level": {
              "gte": 2
            }
          }
        }
      }
    }
  ]
}

根据索引别名搜索

POST tmdb-latest-highlevel/_search
{
  "query": {
    "match_all": {}
  }
}
结果如下：
    "max_score" : 1.0,
    "hits" : [
      {
        "_index" : "tmdb",
        "_type" : "_doc",
        "_id" : "2",
        "_score" : 1.0,
        "_source" : {
          "title" : "title2",
          "overview" : "overview2",
          "level" : 2
        }
      },
      {
        "_index" : "tmdb",
        "_type" : "_doc",
        "_id" : "3",
        "_score" : 1.0,
        "_source" : {
          "title" : "title3",
          "overview" : "overview3",
          "level" : 3
        }
      }
    ]