# I am confused by the postFilter and filter of elasticsearch‘s java client
**URL:** https://discuss.elastic.co/t/i-am-confused-by-the-postfilter-and-filter-of-elasticsearch-s-java-client/16067
**Category:** Elasticsearch
**Created:** [February 28, 2014, 9:04am UTC](https://discuss.elastic.co/t/i-am-confused-by-the-postfilter-and-filter-of-elasticsearch-s-java-client/16067 "2014-02-28T09:04:35Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@xzer\_LR](https://discuss.elastic.co/u/xzer_LR)
#### Post date: [February 28, 2014, 9:04am UTC](https://discuss.elastic.co/t/i-am-confused-by-the-postfilter-and-filter-of-elasticsearch-s-java-client/16067/1 "2014-02-28T09:04:35Z")
AFAIK, There are three types search I can perform on elasticsearch:
1. query =\> which will do scoring and affect the hit
2. filter =\> which will not do scoring and affect the hit
3. post\_filter =\> which will be applied on the result of query/filter and
will not affect the hit and facet aggregation
At the java client library side, I am assuming there should be same three
types of apis existing, yes I found three.
But unfortunately the setFilter method of SearchRequestBuilder had been
marked as deprecated and also had
been delegated to the setPostFilter method of itself.
My question is how can I perform a filter query by java client? I found a
way by that I can do filter query as following:
search.setQuery(
QueryBuilders.filteredQuery(
QueryBuilders.matchAllQuery(),
FilterBuilders.termFilter("xx", "v")
)
);
But it seems so strange that I have to declare an unnecessary match all
query.
--
You received this message because you are subscribed to the Google Groups "elasticsearch" group.
To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com).
To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/6aefc449-3997-4128-b9ee-715d7a998b5c%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/6aefc449-3997-4128-b9ee-715d7a998b5c%40googlegroups.com).
For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out).
---
### Author:  [@Binh\_Ly\_2](https://discuss.elastic.co/u/Binh_Ly_2)
#### Post date: [February 28, 2014, 1:23pm UTC](https://discuss.elastic.co/t/i-am-confused-by-the-postfilter-and-filter-of-elasticsearch-s-java-client/16067/2 "2014-02-28T13:23:19Z")
That looks correct to me.
--
You received this message because you are subscribed to the Google Groups "elasticsearch" group.
To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com).
To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/4ad78d4d-3e0f-4dfe-a4b9-1d59c349e56e%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/4ad78d4d-3e0f-4dfe-a4b9-1d59c349e56e%40googlegroups.com).
For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out).
---
### Author:  [@javanna](https://discuss.elastic.co/u/javanna)
#### Post date: [March 4, 2014, 5:44pm UTC](https://discuss.elastic.co/t/i-am-confused-by-the-postfilter-and-filter-of-elasticsearch-s-java-client/16067/3 "2014-03-04T17:44:09Z")
If you only need the filter part you can use a constant score query that
only contains a filter, in that case you wouldn't need the match\_all query
anymore.
On Friday, February 28, 2014 10:04:35 AM UTC+1, xzer LR wrote:
> AFAIK, There are three types search I can perform on elasticsearch:
>
> 1. query =\> which will do scoring and affect the hit
> 2. filter =\> which will not do scoring and affect the hit
> 3. post\_filter =\> which will be applied on the result of query/filter and
> will not affect the hit and facet aggregation
>
> At the java client library side, I am assuming there should be same three
> types of apis existing, yes I found three.
> But unfortunately the setFilter method of SearchRequestBuilder had been
> marked as deprecated and also had
> been delegated to the setPostFilter method of itself.
>
> My question is how can I perform a filter query by java client? I found a
> way by that I can do filter query as following:
>
> search.setQuery(
> QueryBuilders.filteredQuery(
> QueryBuilders.matchAllQuery(),
> FilterBuilders.termFilter("xx", "v")
> )
> );
>
> But it seems so strange that I have to declare an unnecessary match all
> query.
--
You received this message because you are subscribed to the Google Groups "elasticsearch" group.
To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com).
To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/0ec29ae2-fc52-4ebe-b83e-a94b3ea775d2%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/0ec29ae2-fc52-4ebe-b83e-a94b3ea775d2%40googlegroups.com).
For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out).
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 6, 2017, 1:45am UTC](https://discuss.elastic.co/t/i-am-confused-by-the-postfilter-and-filter-of-elasticsearch-s-java-client/16067/4 "2017-07-06T01:45:48Z")