elasticsearch - 方面的多个属性(elasticsearch)

Question

我有以下索引:

curl -XPUT "http://localhost:9200/test/" -d '
{
    "mappings": {
        "files": {
            "properties": {
                "name": {
                    "type": "string",
                    "index": "not_analyzed"
                },
                "owners": {
                    "type": "nested",
                    "properties": {
                        "name": {
                            "type":"string",
                            "index":"not_analyzed"
                        },
                        "mail": {
                            "type":"string",
                            "index":"not_analyzed"
                        }
                    }
                }
            }
        }
    }
}
'

带有示例文档:

curl -XPUT "http://localhost:9200/test/files/1" -d '
{
    "name": "first.jpg",
    "owners": [
        {
            "name": "John Smith",
            "mail": "<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="deb4ad9ebba6bfb3aeb2bbf0bdb1b3" rel="noreferrer noopener nofollow">[email protected]</a>"
        },
        {
            "name": "Joe Smith",
            "mail": "<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="771d18120437120f161a071b125914181a" rel="noreferrer noopener nofollow">[email protected]</a>"
        }
    ]
}
'

curl -XPUT "http://localhost:9200/test/files/2" -d '
{
    "name": "second.jpg",
    "owners": [
        {
            "name": "John Smith",
            "mail": "<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="a4ced7e4c1dcc5c9d4c8c18ac7cbc9" rel="noreferrer noopener nofollow">[email protected]</a>"
        },
        {
            "name": "Ann Smith",
            "mail": "<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="cfaebc8faab7aea2bfa3aae1aca0a2" rel="noreferrer noopener nofollow">[email protected]</a>"
        }
    ]
}
'

curl -XPUT "http://localhost:9200/test/files/3" -d '
{
    "name": "third.jpg",
    "owners": [
        {
            "name": "Kate Foo",
            "mail": "<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="1e75785e7b667f736e727b307d7173" rel="noreferrer noopener nofollow">[email protected]</a>"
        }
    ]
}
'

我需要找到与某些查询匹配的所有所有者，比如说“mit”:

curl -XGET "http://localhost:9200/test/files/_search" -d '
{
    "facets": {
        "owners": {
            "terms": {
                "field": "owners.name"
            },
            "facet_filter": {
                "query": {
                    "query_string": {
                        "query": "*mit*",
                        "default_field": "owners.name"
                    }
                }
            },
            "nested": "owners"
        }
    }
}
'

这给了我以下结果:

{
  "facets" : {
    "owners" : {
      "missing" : 0,
      "_type" : "terms",
      "other" : 0,
      "total" : 4,
      "terms" : [
        {
          "count" : 2,
          "term" : "John Smith"
        },
        {
          "count" : 1,
          "term" : "Joe Smith"
        },
        {
          "count" : 1,
          "term" : "Ann Smith"
        }
      ]
    }
  },
  "timed_out" : false,
  "hits" : {...}
}

而且没关系。 但我真正需要的是让所有者提供他们的电子邮件地址(对于方面中的每个条目，我需要结果中的附加字段)。 可以实现吗？

Answer 1

我认为不可能吗？根据您的需要，我会有

1. 创建一个包含姓名和电子邮件的复合字段，并在该字段上执行构面操作，或者
2. 除了构面之外还运行查询并从查询结果中提取它，但这显然不可扩展
3. 两步操作，获取构面，构建所需的查询并合并结果。