Can I use post_filter with top_hits?

Hi,

I am using top_hits aggregation with sort aggregation and want to filter out some of the top_hits based on a term. Can I use post filter to do that? If now how to use filter aggregation with top hits?

So I've pasted my query below. It works on a index containing citizens of a state. I have aggregated them based on city as the top level bucket and want to show the information of the oldest citizen of each city using top_hits and sort aggregation. If the oldest citizen is disabled (we can determine that with a field named isDisabled = true, isDisabled is true if someone is disabled, this field will not be present if someone is not disabled) we need to show null (it should not show the oldest non-disabled citizen instead). Either the oldest citizen who is not disabled or null.

query:

{
"size": 0,
"aggregations": {
"search_documents": {
"terms": {
"field": "city",
"size": 10,
"min_doc_count": 1,
"shard_min_doc_count": 0,
"show_term_doc_count_error": true,
"order": [
{
"_count": "desc"
},
{
"_term": "asc"
}
],
"include": {
"partition": 0,
"num_partitions": 1
}
},
"aggregations": {
"citizen_search_result": {
"top_hits": {
"from": 0,
"size": 1,
"version": false,
"explain": false,
"sort": [
{
"age": {
"order": "desc"
}
}
]
}
}
}
}
}
}

response

{
"took" : 2,
"timed_out" : false,
"_shards" : {
"total" : 5,
"successful" : 5,
"skipped" : 0,
"failed" : 0
},
"hits" : {
"total" : 3,
"max_score" : 0.0,
"hits" :
},
"aggregations" : {
"search_documents" : {
"doc_count_error_upper_bound" : 0,
"sum_other_doc_count" : 0,
"buckets" : [
{
"key" : "Bothel",
"doc_count" : 3,
"doc_count_error_upper_bound" : 0,
"citizen_search_result" : {
"hits" : {
"total" : 3,
"max_score" : null,
"hits" : [
{
"_index" : "absentboolkeytestold",
"_type" : "citizen",
"_id" : "LTzMt20BrCTD-YYbAK_c",
"_score" : null,
"_source" : {
"name" : "Nancy",
"city" : "Bothel",
"age" : 40,
"isDisabled" : true
},
"sort" : [
"40"
]
}
]
}
}
}
]
}
}
}

I want to show null here as Nancy the oldest citizen of Bothell is disabled. Remember that I cant use a top level filter aggregation for isDisabled field as it will filter out all disabled citizens even before the aggregation.