# Regular Expression operators for pattern\_capture

**URL:** <https://discuss.elastic.co/t/regular-expression-operators-for-pattern-capture/52664>\
**Category:** Elasticsearch\
**Created:** [June 13, 2016, 9:21pm UTC](https://discuss.elastic.co/t/regular-expression-operators-for-pattern-capture/52664 "2016-06-13T21:21:10Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![marinoc](https://avatars.discourse-cdn.com/v4/letter/m/87869e/32.png) [@marinoc](https://discuss.elastic.co/u/marinoc)\
**Post date:** [June 13, 2016, 9:21pm UTC](https://discuss.elastic.co/t/regular-expression-operators-for-pattern-capture/52664/1 "2016-06-13T21:21:10Z")

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Is there a list or documentation on the regular expression operators I can use in the "patterns" parameter of the pattern\_capture token filter?

Is it the same operators used by the RegExp query?

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**Author:** ![danielmitterdorfer](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/danielmitterdorfer/32/110510_2.png) [@danielmitterdorfer](https://discuss.elastic.co/u/danielmitterdorfer)\
**Post date:** [June 14, 2016, 9:12am UTC](https://discuss.elastic.co/t/regular-expression-operators-for-pattern-capture/52664/2 "2016-06-14T09:12:56Z")

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Hi @marinoc,

the `pattern_capture` token filter supports the [complete Java regular expression syntax](http://docs.oracle.com/javase/7/docs/api/java/util/regex/Pattern.html) in the `patterns` parameter.

Daniel

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**Author:** ![marinoc](https://avatars.discourse-cdn.com/v4/letter/m/87869e/32.png) [@marinoc](https://discuss.elastic.co/u/marinoc)\
**Post date:** [June 14, 2016, 11:50am UTC](https://discuss.elastic.co/t/regular-expression-operators-for-pattern-capture/52664/3 "2016-06-14T11:50:40Z")

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Perfect! Thanks @danielmitterdorfer

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 5, 2017, 10:43pm UTC](https://discuss.elastic.co/t/regular-expression-operators-for-pattern-capture/52664/4 "2017-07-05T22:43:57Z")

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