Lowercase processoredit

Converts a string to its lowercase equivalent. If the field is an array of strings, all members of the array will be converted.

Table 31. Lowercase Options

Name Required Default Description

field

yes

-

The field to make lowercase

target_field

no

field

The field to assign the converted value to, by default field is updated in-place

ignore_missing

no

false

If true and field does not exist or is null, the processor quietly exits without modifying the document

description

no

-

Description of the processor. Useful for describing the purpose of the processor or its configuration.

if

no

-

Conditionally execute the processor. See Conditionally run a processor.

ignore_failure

no

false

Ignore failures for the processor. See Handling pipeline failures.

on_failure

no

-

Handle failures for the processor. See Handling pipeline failures.

tag

no

-

Identifier for the processor. Useful for debugging and metrics.

{
  "lowercase": {
    "field": "foo"
  }
}