我想让最大的id形式成为aptitude对象的子域,
{
"mappings": {
"aptitude": {
"dynamic": "strict",
"properties": {
"id": {
"type": "long"
},
"es": {
"type": "text"
},
"en": {
"type": "text"
},
"behaviors": {
"properties": {
"id": {
"type": "long"
},
"es": {
"type": "text"
},
"en": {
"type": "text"
}
}
}
}
}
}
你可以看到aptitude有一系列的行为,而这些行为又有一个id,afaik我应该使用来自Jest的maxAggregation,但是找不到一个在java中如何做到这一点的体面的例子,有人可以帮忙吗?
答案 0 :(得分:0)
String query = "{\n"
+" \"query\" : {\n"
+" \"match\" : {\"id\":" + aptitudeId + "}\n"
+" },\n"
+" \"aggs\" : {\n"
+" \"max1\" : {\n"
+" \"max\" : {\n"
+" \"field\" : \"behaviors.id\"\n"
+" }\n"
+" }\n"
+" }\n"
+"}";
我正在寻找来自jest的聚合构建器,但通过查询来实现它更容易。
回报如下:
Search search = new Search.Builder(query)
.addIndex(aptitudeIndexName)
.addType(aptitudeTypeName)
.build();
try {
SearchResult result = client.execute(search);
MaxAggregation max1 = result.getAggregations().getMaxAggregation("max1");
Double max = max1.getMax();
return max.longValue() + 1;//so it would add 1 to the current maximum id