# How to execute Lucene query inside Elasticsearch
**URL:** https://discuss.elastic.co/t/how-to-execute-lucene-query-inside-elasticsearch/200626
**Category:** Elasticsearch
**Created:** [September 23, 2019, 5:49am UTC](https://discuss.elastic.co/t/how-to-execute-lucene-query-inside-elasticsearch/200626 "2019-09-23T05:49:09Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@saimaz](https://discuss.elastic.co/u/saimaz)
#### Post date: [September 23, 2019, 5:49am UTC](https://discuss.elastic.co/t/how-to-execute-lucene-query-inside-elasticsearch/200626/1 "2019-09-23T05:49:09Z")
Hey there,
I'm writing an Elasticsearch plugin. Can someone direct me to the right place how to execute a Lucene query in the Query Builder or Rescoring part from a plugin?
The reason for a Lucene is because I want to apply ML data model in the shard for the number of documents filtered by a query. I know there are existing plugins for that but none of them really works in my business case.
Is there any way to access Lucene from custom query builder (from a plugin):
```
public class MyCustomQueryPlugin extends Plugin implements SearchPlugin {
@Override
public List> getQueries() {
return singletonList(
new QuerySpec<>(MyCustomQueryBuilder.NAME, MyCustomQueryBuilder::new, MyCustomQueryBuilder::fromXContent)
);
}
}
```
---
### Author:  [@rjernst](https://discuss.elastic.co/u/rjernst)
#### Post date: [October 4, 2019, 3:36am UTC](https://discuss.elastic.co/t/how-to-execute-lucene-query-inside-elasticsearch/200626/2 "2019-10-04T03:36:48Z")
Registering your own query builder means you will have a custom query type you can run, where the Query produced by the query builder is a Lucene construct. Anything should be possible from there. Can you further describe what you are trying to accomplish?
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [November 1, 2019, 3:37am UTC](https://discuss.elastic.co/t/how-to-execute-lucene-query-inside-elasticsearch/200626/3 "2019-11-01T03:37:00Z")
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