如何在Elasticsearch中增加索引类型？

Question

我曾经这样搜索： curl -XGET localhost:9200/users/_search

但用户包含这样的用户a，b，c： curl -XGET localhost:9200/users/a,b,c/_search

users是第一个索引，a/b/c是类型。

如何a在此查询中增加类型？最好加上示例代码，谢谢。

Answer 1

您可以使用术语查询来增强索引类型。

首先创建一些测试数据（e1，e2，e3是类型，而test是索引名称）：

PUT test/e1/1
{
  "subject": "subject 1"
}
PUT test/e2/1
{
  "subject": "subject 1"
}
PUT test/e3/1
{
  "subject": "subject 1"
}

现在将术语查询与按类型自定义增强一起使用：

GET test/_search
{
  "query": {
    "bool": {
      "should": [
        {
         "query_string": {
           "query": "subject"
         }
        },
        { "term" : { "_type" : {"value" : "e3", "boost" : 2.0} } },
        { "term" : { "_type" : {"value" : "e2", "boost" : 3.0} } }
      ]
    }
  }
}

它将产生如下结果：

{
   "took": 1,
   "timed_out": false,
   "_shards": {
      "total": 1,
      "successful": 1,
      "failed": 0
   },
   "hits": {
      "total": 3,
      "max_score": 0.7671045,
      "hits": [
         {
            "_index": "test",
            "_type": "e2",
            "_id": "1",
            "_score": 0.7671045,
            "_source": {
               "subject": "subject 1"
            }
         },
         {
            "_index": "test",
            "_type": "e3",
            "_id": "1",
            "_score": 0.59740055,
            "_source": {
               "subject": "subject 1"
            }
         },
         {
            "_index": "test",
            "_type": "e1",
            "_id": "1",
            "_score": 0.1289963,
            "_source": {
               "subject": "subject 1"
            }
         }
      ]
   }
}