# Transform a groovy script to Java

**URL:** <https://discuss.elastic.co/t/transform-a-groovy-script-to-java/44419>\
**Category:** Elasticsearch\
**Created:** [March 15, 2016, 10:52am UTC](https://discuss.elastic.co/t/transform-a-groovy-script-to-java/44419 "2016-03-15T10:52:26Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![TheKahuna](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/thekahuna/32/5422_2.png) [@TheKahuna](https://discuss.elastic.co/u/TheKahuna)\
**Post date:** [March 15, 2016, 10:52am UTC](https://discuss.elastic.co/t/transform-a-groovy-script-to-java/44419/1 "2016-03-15T10:52:26Z")

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Hi all,

I've written a groovy script that creates some new fields from the indexed data when indexing. This is a heavy operation and I've read that its faster when in Java. How can I accomplish this?

Thank you.

Edit: I'm using ES 1.7

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<div class="post-metadata">

**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, 11:08pm UTC](https://discuss.elastic.co/t/transform-a-groovy-script-to-java/44419/2 "2017-07-05T23:08:21Z")

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