# Composite Aggregation Java API?
**URL:** https://discuss.elastic.co/t/composite-aggregation-java-api/126642
**Category:** Elasticsearch
**Created:** [April 3, 2018, 10:14pm UTC](https://discuss.elastic.co/t/composite-aggregation-java-api/126642 "2018-04-03T22:14:22Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@jimyoo](https://discuss.elastic.co/u/jimyoo)
#### Post date: [April 3, 2018, 10:14pm UTC](https://discuss.elastic.co/t/composite-aggregation-java-api/126642/1 "2018-04-03T22:14:22Z")
I like "Composite Aggregation" - good addition and thanks. 👍
Is there Java API for this? If not, any plan for Transport, Rest Client ... ?
For queries, we are using Transport API (with Elasticsearch 5.6) now and planning to migrate to Rest Client (with Elasticsearch 6.x).
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### Author:  [@jskidmore](https://discuss.elastic.co/u/jskidmore)
#### Post date: [April 5, 2018, 4:51pm UTC](https://discuss.elastic.co/t/composite-aggregation-java-api/126642/2 "2018-04-05T16:51:05Z")
I am also very interested in this specifically as I have some complex queries that seem to require this, and I can achieve what I need in the REST api by using composite, but need to leverage through java.
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [May 3, 2018, 4:51pm UTC](https://discuss.elastic.co/t/composite-aggregation-java-api/126642/3 "2018-05-03T16:51:34Z")
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