When 'index' attribute in fields are shown when retrieving mapping?

Elastic Stack Elasticsearch
1

I noticed that even if I set { "index": "not_analyzed" } for certain types of fields, like for instance integer, it apparently ignores, because when I fetch the mapping for the given index/type, such attribute doesn't come together with the given field.

That is obvious, given analyzing integer fields doesn't make sense at all.
So my question is: should I consider only "string" fields to bring such "index" attribute when retrieving mappings from the server? So, considering the existing core types, should I consider the types integer/long, float/double and boolean as types where the "index" attribute doesn't apply to?

2

This should be applied, it might help if we can see your overall mapping.

3

But it turns out it doesn't apply. If the field is of type integer, for instance, and the index attribute is not_analyzed it doesn't even get registered in the mapping. At least if I retrieve the type mapping the index attribute doesn't come along within the field.