Regex Field Replacement Index Stage
The Regex Field Replacement index stage lets you match against a source field and append or overwrite that field or another one with a replacement string. It uses the java.util.regex library.
One notable feature is support for flags in the prefix of the pattern, such as
(?iu)\w+ where the
i flag means case-insensitive and
u means Unicode-aware case folding. You can also configure the desired behavior when there is no match. Additionally, you can use capture groups in your replacement configuration using
$1 to denote the first capture group.
When entering configuration values in the UI, use unescaped characters, such as