# Source filtering with Java High Level Rest Client

**URL:** <https://discuss.elastic.co/t/source-filtering-with-java-high-level-rest-client/188717>\
**Category:** Elasticsearch\
**Created:** [July 3, 2019, 1:00pm UTC](https://discuss.elastic.co/t/source-filtering-with-java-high-level-rest-client/188717 "2019-07-03T13:00:34Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![krakenbauss](https://avatars.discourse-cdn.com/v4/letter/k/6a8cbe/32.png) [@krakenbauss](https://discuss.elastic.co/u/krakenbauss)\
**Post date:** [July 3, 2019, 1:00pm UTC](https://discuss.elastic.co/t/source-filtering-with-java-high-level-rest-client/188717/1 "2019-07-03T13:00:34Z")

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How can you perform source filtering with the Java High Level Rest Client

For example if I'm doing a reindex request, I would do something like the following to only include the fields which are relevant to me.

```
POST _reindex
{
    "source": {
        "index": "twitter",
        "_source": ["user", "_doc"]
    },
    "dest": {
        "index": "new_twitter"
    }
}

```

Is it even possible to achieve the same through the Java Client's ReindexRequest?

```
ReindexRequest reindexRequest = new ReindexRequest();
reindexRequest.setSourceIndices("twitter");
reindexRequest.setDestIndex("new_twitter");
// how can you set the fields to include?
```

---

<div class="post-metadata">

**Author:** ![spinscale](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/spinscale/32/25011_2.png) [@spinscale](https://discuss.elastic.co/u/spinscale)\
**Post date:** [July 3, 2019, 1:11pm UTC](https://discuss.elastic.co/t/source-filtering-with-java-high-level-rest-client/188717/2 "2019-07-03T13:11:06Z")

</div>

Hey,

you can change the underlying search request, that is used within the reindex request

```auto
req.getSearchRequest().source().fetchSource(...)

```

hope this helps.

--Alex

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<div class="post-metadata">

**Author:** ![krakenbauss](https://avatars.discourse-cdn.com/v4/letter/k/6a8cbe/32.png) [@krakenbauss](https://discuss.elastic.co/u/krakenbauss)\
**Post date:** [July 3, 2019, 2:49pm UTC](https://discuss.elastic.co/t/source-filtering-with-java-high-level-rest-client/188717/3 "2019-07-03T14:49:16Z")

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Yes, that is exactly what I needed.

Cheers

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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 31, 2019, 2:49pm UTC](https://discuss.elastic.co/t/source-filtering-with-java-high-level-rest-client/188717/4 "2019-07-31T14:49:24Z")

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