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 Overview

The JWT expression parser accepts the most common comparison operators as well as logical operators. 

The main purpose of these operators is to construct complex logical comparisons by linking individual expressions. 


Comparison operators

The operators and their meaning are listed below - the applicable data types for the elements (operands) of the respective operators can be found in the subsequent table.

A comparison always returns a BOOLEAN value.

Overview of all case-sensitive comparison operators


All operators respect the case of the characters.


OperatorMeaningExamples (all examples return true)
= equal to
1=1
true = true
[1, 2, 3] = [1, 2, 3]
["blue", "red", "green"] = ["blue", "red", "green"]

When working with lists, each elements' existence and its order are being evaluated.

!= not equal to
  • 0 != 1
  • "HELLO" != "Hello"
  • %{issue.description} != "Hello"
  • true != false
  • [1, 2, 3] != [1, 3, 2]
  • ["blue", "red", "green"] != ["blue", "green", "red"]

When working with lists, each elements' existence and its order are evaluated.

< lower than
  • 1 < 2
  • "abc" < "bbc"
  • "abc" < "abcd"
> greater than
  • 2 > 1
  • "bbc" > "abc"
  • "abcd" > "abc"
<= less than or equal to
  • 3 <= 3
>= greater than or equal to
  • "Hello world! Hello *" >= "Hello world"
~ contains
  • "Hello world!" ~ "world", checks whether a string contains a substring.
  • %{issue.components.leads} ~ %{system.currentUser} , checks whether "Component leads" contains "Current user".
  • [1, 2, 3, 2, 2, 4] ~ [2, 1, 2] , when used with lists cardinalities of every single instance of an element must match.
  • ["blue", "red", "green", "red", "white", "red"] ~ ["red", "green", "red"]
  • (["green", "red"] ~ ["red", "green", "red"]) = false
!~ does not contain
  • "world" !~ "Hello world!"
  • %{issue.fixVersions} !~ %{issue.versions} , checks whether "Fix version/s" doesn't contain all versions in "Affects version/s".
  • [1, 2, 3, 2, 2, 4] !~ [2, 1, 1, 4] , when used with lists cardinalities of every single instance of an element must match.
  • ["blue", "red", "green", "red", "red"] !~ ["red", "green", "green", "red"]
in is contained in "world" in "Hello world!" , to check whether a substring is contained in a string.
%{system.currentUser} in %{issue.components.leads} , checks whether "Current user" is contained in "Component leads".
[1, 1, 2] in [2, 1, 1, 1, 4] ,  cardinalities of every single element must match. 
["blue", "red", "red"] in ["red", "green", "blue", "red", "red"] ,  cardinalities of every single instance of an element must match. 
2 in [1, 2, 3]
"blue" in ["red, "blue", "white"]
not in is not contained in "Hello world!" not in "world"
%{issue.versions} not in %{issue.fixVersions} , checks whether not all versions in "Affects version/s" are contained in "Fix version/s".
[1, 1, 2, 2] not in [2, 1, 1, 1, 4] , cardinalities of every single element must match. 
["blue", "red", "red", "blue"] not in ["red", "blue", "red", "red"] , cardinalities of every single instance of an element must match. 
5 not in [1, 2, 3, 3, 4]
"orange" not in ["blue", "red", "white"]
any in some element is in %{issue.versions} any in %{issue.fixVersions} , checks whether any version in "Affects version/s" is contained in "Fix version/s".
[1, 3] any in [3, 4, 5]
["blue", "white"] any in ["black", "white", "green"]
none in no single element is in %{issue.versions} none in %{issue.fixVersions} , checks whether there isn't a single version "Affects version/s" in "Fix version/s".
[1, 2] none in [3, 4, 5]
["blue", "red"] none in ["black", "white", "green"]
Overview of all case ignoring comparison operators

The following comparison operators are applicable to  STRING and STRING LIST   data types.

All operators ignore the case of the characters.

OperatorMeaningExamples (all examples return true)
=~ equal to "HELLO" =~ "Hello"
"up" =~ "UP"
["blue", "red", "green"] =~ ["Blue", "RED", "Green"]
!=~ not equal to " HELLO" !=~ "Hello"
"up" !=~ "down"
("up" !=~ "UP") = false
["blue", "red"] !=~ ["Blue", "green"]
["blue", "red"] !=~ ["Red", "BLUE"]
(["blue", "red", "green"] !=~ ["Blue", "RED", "Green"]) = false
~~ contains "Hello World!" ~~ "world" , checks whether a string contains a substring.
"A small step for a man" ~~ "STEP" , checks whether a string contains a substring.
["one", "two", "three"] ~~ ["TWO", "One"] , checks whether a string list contains all the elements of another string list.
!~~ does not contain "Hello World!" !~~ "bye" , checks whether a string doesn't contain a substring.
"A small step for a man" !~~ "big" , checks whether a string doesn't contain a substring.
["one", "two", "three"] !~~ ["Four"] , checks whether a string list doesn't contain one element of another string list.
(["one", "two", "three"] !~~ ["TWO"]) = false
in~ is contained in "world" in~ "Hello World!" , checks whether a substring is contained in another string.
"STEP" in~ "A small step for a man" , checks whether a substring is contained in another string.
["TWO", "One"] in~ ["one", "two", "three"] , checks whether all the elements of a string list are contained in another string list.
not in~ is not contained in "bye" not in~ "Hello World!" , checks whether a substring is not contained in another string.
"big" not in~ "A small step for a man" , checks whether a substring is not contained in another string.
["Four"] not in~ ["one", "two", "three"] , checks whether any of the elements of a string list are not contained in another string list.
(["TWO"] not in~ ["one", "two", "three"]) = false
any in~ some element is in ["blue", "violet"] any in~ ["Blue", "Red", "Green"]
["Five", "One"] any in~ ["FOUR", "FIVE", "SIX"]
none in~ no single element is in ["Orange"] any in~ ["red", "blue", "green"]
(["orange"] any in~ ["Red", "Orange"]) = false


Logical operators

The table below lists all logical operators that can be used for linking logical terms in an expression.