# Analyzed tokens to array on document
**URL:** https://discuss.elastic.co/t/analyzed-tokens-to-array-on-document/179052
**Category:** Elasticsearch
**Created:** [April 30, 2019, 9:32am UTC](https://discuss.elastic.co/t/analyzed-tokens-to-array-on-document/179052 "2019-04-30T09:32:12Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@Jochen](https://discuss.elastic.co/u/Jochen)
#### Post date: [April 30, 2019, 9:32am UTC](https://discuss.elastic.co/t/analyzed-tokens-to-array-on-document/179052/1 "2019-04-30T09:32:12Z")
Good morning,
I am trying to create an index with products where I need to store keywords for each individual product.
I am using an analyzer to create tokens for each product description (It is a standard analyzer with some token and charfilters). Is there a way to map these tokens to an array on my document at index time?
Let's say for example, I have a document
```
{
"product-decription" : "A book case"
}
```
When I add this document to my index, I want to get the following result:
```
{
"product-description": "A book case"
"keywords": ["book", "case"]
}
```
What I am doing now is:
- Call the \_analyze endpoint for every description to get the tokens, add them to the keywords array and then add the document to the index.
I was wondering if it's possible to define this in an analyzer, or if there is an alternative method than calling the \_analyze endpoint for each product?
Thanks in advance.
Jochen
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [May 28, 2019, 9:32am UTC](https://discuss.elastic.co/t/analyzed-tokens-to-array-on-document/179052/2 "2019-05-28T09:32:14Z")
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