contains

FEEL built-in function · FEEL string functions

contains(string, match)

Returns true if the string contains match anywhere, false otherwise.

contains takes a plain string, not a pattern, so a dot is just a dot. To test whether a list contains a value, use list contains instead.

Parameters

Parameter	Type	Description
string	string	the string to search in
match	string	the substring to look for

contains("foobar", "of")

false Try it ↑

contains("foobar", "oba")

true Try it ↑

contains("FooBar", "foo")

false Try it ↑

Case-sensitive.

contains("a.b", ".")

true Try it ↑

No regex: the dot is literal.

contains("foobar", "")

true Try it ↑

Every string contains the empty string.

contains(null, "a")

null Try it ↑

Null in, null out. B-FEEL returns false.

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).