Executing a search with aggregations
The previous recipe can be extended to support aggregations and to retrieve analytics on indexed data.
Getting ready
You will need a working ElasticSearch cluster and a working copy of Maven.
The code of this recipe is in chapter_10/nativeclient folder in the code bundle of this chapter available on Packt's website, and on GitHub (https://github.com/aparo/elasticsearch-cookbook-second-edition). The referred class is AggregationExample.
How to do it...
To execute a search with aggregations, we will perform the following steps:
- We'll calculate two different aggregations (terms and extended statistics) as follows:
import org.elasticsearch.action.search.SearchResponse; import org.elasticsearch.client.Client; import org.elasticsearch.search.aggregations.AggregationBuilder; ...
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