elasticsearch-aggregation - 用java编写脚本用于elasticsearch度量聚合

Question

我想在 java 中编写以下 elasticsearch 聚合查询。我无法在java中为此编写脚本，请帮助

"aggs":{
 "AVG_MEMORY_USAGE": {
      "avg": {
            "script": {"lang": "expression", "source": "doc['ProcessingTimeInMilliSecs']/doc['timezone']" }
          }
        }
      }

标签： elasticsearch-aggregationelasticsearch-java-api

Answer 1

找到了一种方法来做到这一点：

Script script = new 
Script("doc['ProcessingTimeInMilliSecs'].value/doc['timezone'].value");
AvgAggregationBuilder agg = 
AggregationBuilders.avg("AVG_MEMORY_USAGE").script(script);
Avg avg = agg.getAggregations().get("AVG_MEMORY_USAGE");
String avgValue = avg.getValue();

脚本默认使用无痛语言，所以我没有在“脚本”中明确提及 lang 参数