This version of the OpenSearch documentation is no longer maintained. For the latest version, see the current documentation. For information about OpenSearch version maintenance, see Release Schedule and Maintenance Policy.
string_converter
The string_converter processor converts a string to uppercase or lowercase. You can use it as an example for developing your own processor. The following table describes the option you can use to configure the string_converter processor.
| Option | Required | Type | Description |
|---|---|---|---|
| upper_case | No | Boolean | Whether to convert to uppercase (true) or lowercase (false). |