java - elasticsearch group by ID field and perform max on date field -

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my index has data mentioned below.

id    version_number groupid   indexdate 1    v1                 1    2016-11-15t12:00:00 2    v1                 2    2016-11-20t12:00:00 3    v2                 2    2016-12-01t12:00:00 4    v1                 3    2016-13-01t12:00:00 5    v1                 4    2016-11-01t12:00:00 6    v2                 4    2016-13-01t12:00:00 7    v1                 5    2016-14-01t12:00:00

how can write elasticsearch query in java. if search date 2016-13-01t12:00:00 expect see latest version per groupid has indexdate less or equal date searched?

output expected:

id    version_number   groupid   indexdate 1    v1                  1       2016-13-01t12:00:00 2    v2                  2       2016-11-20t12:00:00 6    v3                  3       2016-10-01t12:00:00 7    v2                  4       2016-10-01t12:00:00

i dont see max function on date field in elasticsearch achieve this.

i first aggregate on version_numberand use top_hits sub-aggregation sorted on descending indexdate , returning id of first document of bucket.

{   "size": 0,   "aggs": {     "by_version": {       "terms": {         "field": "version_number"       },       "aggs": {         "max_date": {           "top_hits": {             "size": 1,             "sort": {               "indexdate": "desc"             },             "_source": [               "id"             ]           }         }       }     }   } }

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