# Formal Grammar of Query DSL?
**URL:** https://discuss.elastic.co/t/formal-grammar-of-query-dsl/17133
**Category:** Elasticsearch
**Created:** [April 22, 2014, 8:26pm UTC](https://discuss.elastic.co/t/formal-grammar-of-query-dsl/17133 "2014-04-22T20:26:23Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@Lukas\_Vlcek1](https://discuss.elastic.co/u/Lukas_Vlcek1)
#### Post date: [April 22, 2014, 8:26pm UTC](https://discuss.elastic.co/t/formal-grammar-of-query-dsl/17133/1 "2014-04-22T20:26:23Z")
Hi,
is there available any formal grammar of Query DSL for Elasticsearch? (may
be a PEG one [1] could be a good fit?)
Regards,
Lukas
[1] [http://en.wikipedia.org/wiki/Parsing\_expression\_grammar](http://en.wikipedia.org/wiki/Parsing_expression_grammar)
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### Author:  [@nicktackes](https://discuss.elastic.co/u/nicktackes)
#### Post date: [April 22, 2014, 8:40pm UTC](https://discuss.elastic.co/t/formal-grammar-of-query-dsl/17133/2 "2014-04-22T20:40:15Z")
Not a direct match,
but i did locate this grammar to lucene.
[https://github.com/thoward/lucene-query-parser.js/blob/master/lucene-query.grammar](https://github.com/thoward/lucene-query-parser.js/blob/master/lucene-query.grammar)
On Tuesday, April 22, 2014 1:26:23 PM UTC-7, Lukáš Vlček wrote:
> Hi,
>
> is there available any formal grammar of Query DSL for Elasticsearch? (may
> be a PEG one [1] could be a good fit?)
>
> Regards,
> Lukas
>
> [1] [Parsing expression grammar - Wikipedia](http://en.wikipedia.org/wiki/Parsing_expression_grammar)
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### Author:  [@Lukas\_Vlcek1](https://discuss.elastic.co/u/Lukas_Vlcek1)
#### Post date: [April 22, 2014, 8:50pm UTC](https://discuss.elastic.co/t/formal-grammar-of-query-dsl/17133/3 "2014-04-22T20:50:28Z")
Not direct match but very interesting indeed! 🙂
On Tue, Apr 22, 2014 at 10:40 PM, Nick Tackes [ntackes@gmail.com](mailto:ntackes@gmail.com) wrote:
> Not a direct match,
> but i did locate this grammar to lucene.
>
> [https://github.com/thoward/lucene-query-parser.js/blob/master/lucene-query.grammar](https://github.com/thoward/lucene-query-parser.js/blob/master/lucene-query.grammar)
>
> On Tuesday, April 22, 2014 1:26:23 PM UTC-7, Lukáš Vlček wrote:
>
> > Hi,
> >
> > is there available any formal grammar of Query DSL for Elasticsearch?
> > (may be a PEG one [1] could be a good fit?)
> >
> > Regards,
> > Lukas
> >
> > [1] [Parsing expression grammar - Wikipedia](http://en.wikipedia.org/wiki/Parsing_expression_grammar)
>
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 6, 2017, 1:34am UTC](https://discuss.elastic.co/t/formal-grammar-of-query-dsl/17133/4 "2017-07-06T01:34:13Z")