# Java API for filter\_path in elastic search

**URL:** <https://discuss.elastic.co/t/java-api-for-filter-path-in-elastic-search/80586>\
**Category:** Elasticsearch\
**Created:** [March 30, 2017, 5:39am UTC](https://discuss.elastic.co/t/java-api-for-filter-path-in-elastic-search/80586 "2017-03-30T05:39:04Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![prashant.bajpai](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/prashant.bajpai/32/16844_2.png) [@prashant.bajpai](https://discuss.elastic.co/u/prashant.bajpai)\
**Post date:** [March 30, 2017, 5:39am UTC](https://discuss.elastic.co/t/java-api-for-filter-path-in-elastic-search/80586/1 "2017-03-30T05:39:04Z")

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Hi,  
I need to reduce the response size of elastic search query, So I found one way to use Response Filtering through filter\_path parameter in URL.

```
GET testindex-2016.04.14/_search?filter_path=aggregations.testAggs.buckets 

```

Below is the link:  
[https://www.elastic.co/guide/en/elasticsearch/reference/2.3/common-options.html#\_response\_filtering](https://www.elastic.co/guide/en/elasticsearch/reference/2.3/common-options.html#_response_filtering)

But I couldn't find any way to implement response filtering in Java API,  
While googling, I have also seen one `FilterPath.java` class in elastic search, but I couldn't find any example of it. Even I am not sure whether this class can be used for this purpose or not.

Please suggest me any way to implement response filtering in Java. Thanks

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<div class="post-metadata">

**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\
**Post date:** [March 31, 2017, 7:55am UTC](https://discuss.elastic.co/t/java-api-for-filter-path-in-elastic-search/80586/2 "2017-03-31T07:55:12Z")

</div>

The Transport Client can not do that. It's done on a REST level.

It's done here:

[https://github.com/elastic/elasticsearch/blob/5.x/core/src/main/java/org/elasticsearch/rest/AbstractRestChannel.java#L92-L98](https://github.com/elastic/elasticsearch/blob/5.x/core/src/main/java/org/elasticsearch/rest/AbstractRestChannel.java#L92-L98)

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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:** [April 28, 2017, 7:55am UTC](https://discuss.elastic.co/t/java-api-for-filter-path-in-elastic-search/80586/3 "2017-04-28T07:55:19Z")

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