replace

FEEL built-in function · FEEL string functions

replace(input, pattern, replacement, flags?)

Returns the input with every match of the regular expression replaced by the replacement, which may reference capture groups as $1, $2, ….

Parameters

Parameter	Type	Description
input	string	the source string
pattern	string	regular expression to replace (XPath syntax)
replacement	string	replacement text; $1…$n reference capture groups
flags	string	s, m, i, x flags (optional)

replace("banana", "a", "o")

bonono Try it ↑

replace("abcd", "(ab)|(a)", "[1=$1][2=$2]")

[1=ab][2=]cd Try it ↑

replace("a.b.c", ".", "-")

----- Try it ↑

The pattern is a regex; an unescaped dot matches every character.

replace("a.b.c", "\\.", "-")

a-b-c Try it ↑

replace("abc", "b", "$")

null Try it ↑

A lone $ in the replacement is invalid and gives null.

replace("Hello", "l", "L", "i")

HeLLo Try it ↑

Part of FEEL string functions: the rules all of them share, string concatenation, regex pitfalls and every function side by side.

Defined by the OMG DMN 1.6 specification, chapter 10.3.4 (built-in functions).