# Elasticsearch join datatype in java API

**URL:** <https://discuss.elastic.co/t/elasticsearch-join-datatype-in-java-api/150660>\
**Category:** Elasticsearch\
**Created:** [October 2, 2018, 8:38am UTC](https://discuss.elastic.co/t/elasticsearch-join-datatype-in-java-api/150660 "2018-10-02T08:38:02Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![soi](https://avatars.discourse-cdn.com/v4/letter/s/b9bd4f/32.png) [@soi](https://discuss.elastic.co/u/soi)\
**Post date:** [October 2, 2018, 8:38am UTC](https://discuss.elastic.co/t/elasticsearch-join-datatype-in-java-api/150660/1 "2018-10-02T08:38:02Z")

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Hello,

How could i use java API in elasticsearch \>= 5.6 to index document with parent/child relationship using join datatype.

any example please ?

Thank you

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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:** [October 30, 2018, 8:38am UTC](https://discuss.elastic.co/t/elasticsearch-join-datatype-in-java-api/150660/2 "2018-10-30T08:38:18Z")

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