Nested Aggregations - Java API

Elastic Stack Elasticsearch
1

Hi all,

I'm working on putting together a query that requires nested aggregations
in the form:

"aggs": {
"steve_unique": {
"filter": {
"term": {
"user.screen_name": "steve"
}
},
"aggs": {
"unique": {
"cardinality": {
"field": "entities.hashtags.text"
}
}
}
}
}

Looking through the API, I'm not noticing an obvious way to go about
forming this part of the query. Is there something built in that would
facilitate this?

Thanks,
Robert

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2

Hi,

You should be able to do it with the Java API with something like
(untested):

AggregationBuildersfilter("steve_unique").filter(FilterBuilders.termFilter("user.screen_name",
"steve")).subAggregation(AggregationBuilders.cardinality("unique").field("entities.hashtags.text"))

On Mon, Apr 14, 2014 at 8:21 PM, Robert Douglas robertd89@gmail.com wrote:

Hi all,

I'm working on putting together a query that requires nested aggregations
in the form:

"aggs": {
"steve_unique": {
"filter": {
"term": {
"user.screen_name": "steve"
}
},
"aggs": {
"unique": {
"cardinality": {
"field": "entities.hashtags.text"
}
}
}
}
}

Looking through the API, I'm not noticing an obvious way to go about
forming this part of the query. Is there something built in that would
facilitate this?

Thanks,
Robert

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Adrien Grand

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3

Hi,

I am searching the same thing but there is no java api for ES aggregation so you can use generate json using XContentBuilder and perform Java Search api in that json.I do it in the same way.

Thanks,
Sumit

4

Hi,

I am trying to create nested aggregations on list of strings.

for e.g
{aggs : {property1 : aggs : { property2 : aggs : property 3 } } }

I dont think, there are current functionalities to do so.

Regards,
Saravanan.