# Field length validation using ES and matched from ES document
**URL:** https://discuss.elastic.co/t/field-length-validation-using-es-and-matched-from-es-document/229633
**Category:** Elasticsearch
**Created:** [April 24, 2020, 11:28am UTC](https://discuss.elastic.co/t/field-length-validation-using-es-and-matched-from-es-document/229633 "2020-04-24T11:28:32Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@vinay123](https://discuss.elastic.co/u/vinay123)
#### Post date: [April 24, 2020, 11:28am UTC](https://discuss.elastic.co/t/field-length-validation-using-es-and-matched-from-es-document/229633/1 "2020-04-24T11:28:33Z")
Hello ES Team,
I have criteria for searching field length from json file using ES query.
lets say example .
I have a index 'A' - it contains json file documents.
Now i need to validate a field lenght is matching in that json or not
example :
{
" name" :"10"
"city" " " "
"location ": " IN"
}
Now i need _ **verify and match from the index** _ and to validate the length of name filed is 10 or not
and city is blank or not , location is IN or not .
By suing ES queries + java.
How can i write .any suggestions
---
### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [April 24, 2020, 12:05pm UTC](https://discuss.elastic.co/t/field-length-validation-using-es-and-matched-from-es-document/229633/2 "2020-04-24T12:05:32Z")
Best thing to do is probably to compute the length at index time and provide it within your json document.
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [May 22, 2020, 12:15pm UTC](https://discuss.elastic.co/t/field-length-validation-using-es-and-matched-from-es-document/229633/3 "2020-05-22T12:15:01Z")
This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.