java - 连续聚合Elasticsearch Java API

我在搜索请求中有一系列连续的聚合:

"aggs": {
    "nested_max": {
        "nested": {
            "path": "questionResponses"
        },
        "aggs": {
            "filter_max": {
                "filter": {
                    "term": {
                        "questionResponses.key": "announcement.question.tri"
                }
            },
            "aggs": {
                "agg_max": {
                    "max": {
                        "field": "questionResponses.numericValue"
                    }
                }
            }
        }
    }
}

有人可以帮我将这部分请求转换为Java代码:
我做了什么(但不起作用):

   NestedAggregationBuilder maxAggregation =
AggregationBuilders.nested("nested_max", questionResponses)
                   .subAggregation(AggregationBuilders.filter("filter_max", QueryBuilders.termQuery("announcement.question.tri", "announcement.question.tri")))
                   .subAggregation(AggregationBuilders.max("agg_max").field("questionResponses.numericValue"));

最佳答案

您应该将agg_max子聚合添加到filter_max aggs。

filterMax = AggregationBuilders.filter(....);
aggMax = AggregationBuilders.max("agg_max")..;

NestedAggregationBuilder maxAggregation =
AggregationBuilders.nested("nested_max", questionResponses)
                   .subAggregation(aggFilterMax.subAggregation(aggMax));