# Available data in Groovy script\_score/script\_fields? **URL:** \ **Category:** Elasticsearch\ **Created:** [July 13, 2015, 9:11pm UTC](https://discuss.elastic.co/t/available-data-in-groovy-script-score-script-fields/25483 "2015-07-13T21:11:06Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![David\_Thompson](https://avatars.discourse-cdn.com/v4/letter/d/d9b06d/32.png) [@David\_Thompson](https://discuss.elastic.co/u/David_Thompson)\ **Post date:** [July 13, 2015, 9:11pm UTC](https://discuss.elastic.co/t/available-data-in-groovy-script-score-script-fields/25483/1 "2015-07-13T21:11:06Z")
Hi all, I'm trying to get started in using Groovy scripts, and I'm having some trouble understanding scope/limitations of the Groovy "API." At a high level, I'm trying to build queries that return what could be called "multi-score" queries (e.g., "document 1 scored 80% for relevance to your query and 90% for popularity/quality, giving a combined score of 85%" where all three numbers appear in the search results). To do this, I've been experimenting with computing the component scores using `script_fields`, and an overall score using `script_score`. Here's the main issues I've been running into thus far: - Is there any way to access the `inner_hits` data from a `nested` query from within Groovy script? - Is there any way to access script fields within a `script_score` script? Thanks, Dave. ---
**Author:** ![David\_Thompson](https://avatars.discourse-cdn.com/v4/letter/d/d9b06d/32.png) [@David\_Thompson](https://discuss.elastic.co/u/David_Thompson)\ **Post date:** [July 14, 2015, 6:51pm UTC](https://discuss.elastic.co/t/available-data-in-groovy-script-score-script-fields/25483/2 "2015-07-14T18:51:24Z")
I've been doing more experiments, and have found a few things out: - I'd assumed that `script_fields` code was executed before the `script_score` because `_score` is not available as a variable inside the `script_fields` code. This turned out to be false: `script_fields` is executed on only the hits that are returned, and is executed in serial, e.g., adding `sleep(500);` to `script_fields` will result in 25000ms of additional delay when there are 50 hits. Naturally, this means that it will be impossible to use script fields in score calculations. - `script_score` _is_ parallelized, e.g., on a 350k-document 5-shard index, adding `sleep(1);` to `script_score` resulted in a roughly 87s delay, not a 350s delay. -- I'm not sure why I got ~4x speedup rather than a 5x one. - I also experimented with using python instead of groovy, which allowed me to poke at the available locals (in `script_fields` anyways). There don't seem to be any variables related to inner hits. The list of variables is `['_CACHE', '_FREQUENCIES', '_OFFSETS', '_PAYLOADS', '_POSITIONS', '_doc', '_fields', '_index', '_source', 'doc']`, and in `script_score` there's the added variable `_score`. ---
**Author:** ![Lu3do](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/lu3do/32/3993_2.png) [@Lu3do](https://discuss.elastic.co/u/Lu3do)\ **Post date:** [August 3, 2015, 12:33pm UTC](https://discuss.elastic.co/t/available-data-in-groovy-script-score-script-fields/25483/3 "2015-08-03T12:33:17Z")
Hmm, yes I'm also looking for a way to access the inner hits inside a groovy script. Did you already find something? ---
**Author:** ![David\_Thompson](https://avatars.discourse-cdn.com/v4/letter/d/d9b06d/32.png) [@David\_Thompson](https://discuss.elastic.co/u/David_Thompson)\ **Post date:** [August 5, 2015, 3:07pm UTC](https://discuss.elastic.co/t/available-data-in-groovy-script-score-script-fields/25483/4 "2015-08-05T15:07:00Z")
Hi Ludo, I skimmed a bit of the python-script extension's source code, and couldn't see any sign that it was selectively including some variables, but not others. Thus, I'm inclined to believe that inner hits are not accessible from within a groovy script. It might be possible to fork and modify ES to support this feature (I haven't yet thought of a reason why it can't be done, anyways), but that's too big a side-project for my current team. In the end, it was easiest to just recompute the inner hits from `doc` inside of `script_fields`. Not sure whether that's much help for you project or not. Best, David. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 5, 2017, 11:57pm UTC](https://discuss.elastic.co/t/available-data-in-groovy-script-score-script-fields/25483/5 "2017-07-05T23:57:15Z")