elasticsearch aggs top_hits

aggs_top_hits.json

curl -XGET "http://ext-es2.ssh.sentifi.com:9200/analytic/relevant_document/_search" -d'
{
  "size": 0,
  "query": {
    "range": {
      "date": {
        "from": "now-1h"
      }
    }
  },
  "aggs": {
    "0": {
      "filter": {
        "bool": {
          "must": [
            {
              "exists": {
                "field": "tag"
              }
            },
            {
              "script": {
                "script": "doc[\"tag\"].values.length > 1"
              }
            }
          ]
        }
      },
      "aggs": {
        "1": {
          "terms": {
            "size": 0,
            "lang": "groovy",
            "script": "doc[\"tag\"].values.join(\"-\")"
          },
          "aggs": {
            "2": {
              "top_hits": {
                "sort": [
                  {
                    "date": {
                      "order": "desc"
                    }
                  }
                ],
                "size": 5,
                "_source": {
                  "include": [
                    "text"
                  ]
                }
              }
            }
          }
        }
      }
    }
  }
}'