Top Hits Aggregation

[akorthaus]

Hi!

Does Elastica offer support for Top Hits Aggregation (introduced with elasticsearch 1.3)?

http://www.elasticsearch.org/blog/top-hits-aggregation/
http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/search-aggregations-metrics-top-hits-aggregation.html

I could not find anything about it in the code, also seems not very simple to implement, but would be a very useful addition!

Thank you!

best
Andreas

[ruflin]

TopHits is unfortunately not implemented yet. But it can be easily added on top of the abstract aggregation: https://github.com/ruflin/Elastica/tree/master/lib/Elastica/Aggregation

Also in case you urgently need a function which is not in the code yet you can always use raw query: http://elastica.io/example/raw-array-query.html

Feel free to open a pull request with this addition.

[akorthaus]

Thanks!
TopHits will return documents inside (grouped by) the aggregation: http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/search-aggregations-metrics-top-hits-aggregation.html#_example

I'm not aware of any method like that, can elastica handle that already?

[ruflin]

I didn't test it yet, but I assume it will handle it quite well. But as it not "natively" supported yet there will be some traversing needed through the response object. In case it doesn't we will extend Elastica to make it work.