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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.

Excerpt

Comparison operators

The operators, their meaning and the application applicable data types you can use them with are listed below.

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type	tip

A comparison always returns a

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subtle	true
title	boolean

value.

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title	Overview of all case-sensitive comparison operators

Info
All operators respect the case of the characters.

Operator Meaning Examples (all examples return true)

=

equal to

Code Block

language	bash
linenumbers	true

1=1
true = true
[1, 2, 3] = [1, 2, 3]
["blue", "red", "green"] = ["blue", "red", "green"]

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

!=

not equal to

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language	bash
linenumbers	true

0 != 1
"HELLO" != "Hello"
%{issue.description} != "Hello"
true != false
[1, 2, 3] != [1, 3, 2]
["blue", "red", "green"] != ["blue", "green", "red"]

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

<

less than

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1 < 2
"abc" < "bbc"
"abc" < "abcd"

>

greater than

Code Block

language	bash
linenumbers	true

2 > 1
"bbc" > "abc"
"abcd" > "abc"

<=

less than or equal to

Code Block

language	bash
linenumbers	true

3 <= 3

>=

greater than or equal to

Code Block

language	bash
linenumbers	true

"Hello world! Hello *" >= "Hello world"

~

contains

Code Block

language	bash
linenumbers	true

"Hello world!" ~ "world" #checks whether a string contains a substring

%{issue.components.leads} ~ %{system.currentUser} #checks whether "Component leads" contains the "Current user".

[1, 2, 3, 2, 2, 4] ~ [2, 1, 2] ,# when used with lists, the cardinalitiescardinality 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"]

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title	Overview of all case ignoring comparison operators

Info

The following comparison operators are applicable to

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and

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data types.

All operators ignore the case of the characters.

Operator	Meaning	Examples (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`

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title	Applicable data types

Info
Below you find a comprehensive matrix of all operators and applicable data types.

Comparison Operator

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subtle	true
title	BOOLEAN

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subtle	true
title	number

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subtle	true
title	Text

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subtle	true
title	number list

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subtle	true
title	text list

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subtle	true
title	issue list

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subtle	true
title	MULTI-value field

= X X X X X

!= X X X X X X X

< X X - - - -

> - X X - - - -

<= - X X - - - -

>= - X X - - - -

~ - - X X X X X

!~ - - X X X X X

in - - X X X X X

not in - - X X X X X

any in - - - X X X X

none in - - - X X X X

=~ - - X - X - -

!=~ - - X - X - -

~~ - - X - X - -

!~~ - - X - X - -

in~ - - X - X - -

not in~ - - X - X - -

any in~ - - - - X - -

none in~ - - - - X - -

Info

title	Things to be aware of

Please be aware the both operators of the respective comparison must have the same data type. The only exceptions are the following:

Automatic casting from Number to String: Whenever you write a numeric term at the right-hand side of a comparison operator like =, and the left-hand side is occupied by a string term, the parser will automatically transform the right-hand side term into a string (e.g. "30" = 30 will be interpreted the same way as "30" = "30")
Single values as operator in list operations: Operators ~, !~, in and not in can be used for checking a single element (number or string) against a
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subtle true
title number list
or a
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subtle true
title text list
Comparison with the null value: A field which is not set or an empty string is interpreted as null. A field returning
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subtle true
title number
, which doesn't contain a number, is also interpreted as null.

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title	Things to remember

Note

Remember	Example
Operators `~, !~, in` and `not in` can be used for checking a single element (number or text) against a number list or a text list	`1 in [1, 2, 3]` `["blue", "red"] ~ "blue" .`
Operators `~, !~, in` and `not in` when used with a text are useful to look for substrings in another string.	`"I love coding" ~ "love"` `"I don't like Mondays" !~ "Fridays"` `"love" in "I love coding"` `"Fridays" not in "I don't like Mondays".`
Operators `~, !~, in` and `not in` respect cardinality, i.e., container list must have at least the same number of elements as contained list.	`[1, 1] in [1, 1, 1]` `[1, 1] not in [1, 2, 3] .`
Operators `=` and `!=` , when used for comparing lists, require to have the same elements, with the same cardinality and the same order.	`[1, 2, 3] = [1, 2, 3]` `[4, 5, 6] != [4, 6, 5] .`
Operators `<, >, <=` and `>=` work according to lexicographical order when comparing strings.

Logical operators

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

Logical operators take logical terms (which return

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title	boolean

values) as operands and can thus be built using:

a boolean value
a comparison
a logical term enclosed by brackets ()
two logical terms connected with a logical operator, where boolean literals and comparisons themselves are logical terms

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title	Overview of all logical operators

Operator	Meaning	Precedence
`NOT` or `!`	logical negation	1 (highest)
`AND` or `&`	logical conjunction	2
`OR` or `\|`	logical disjunction	3
`XOR`	exclusive or, i.e., `a XOR b` is equivalent to `a AND !b OR !a AND b`	3
`IMPLIES` or `IMP`	logical implication, i.e., `a IMPLIES b` is equivalent to `!a OR b`	4
`XNOR` or `EQV`	logical equivalence, i.e., `a EQV b` is equivalent to `a IMPLIES b AND b IMPLIES a`	4 (lowest)

Info

A single logical term can be enclosed by brackets () in order to increase the readability of the expressions or to define a precedence which differs from the given one.

Logical operators can also be written in lower case (e.g. and, or)

Conditional operator (IF - THEN -ELSE)

The conditional operator ? : is a powerful operator to construct conditional expressions.

It basically allows you to construct the following expression: IF boolean_expression true THEN term_1 ELSE term_2.

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linenumbers	true

<boolean_expression> ? <term_1> : <term_2>

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type	tip

The conditional operator is extremely helpful when being used in calculated fields.

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title	Examples of using the conditional operator

Expression Description

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linenumbers	true

%{issue.priority} = "Highest" ? "Please have a look at this issue immediately" : "No stress, come back later"

IF the priority of an issue is Blocker,

THEN this function will return the

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subtle	true
title	text

"Please have a look at this issue immediately"

ELSE it will return the

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subtle	true
title	text

"No stress, come back later".

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{issue.duedate} != null ? ({...duedate} - {...currentDateTime}) / {HOUR} : 0

IF an issue does have a due date set (due date is not null),

THEN this function will return the

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subtle	true
title	number

of hours from the current date-time to the due date

ELSE it will return the

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subtle	true
title	number

0.

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linenumbers	true

%{issue.somefield} = "Red" ? "Color" : "No color"

IF a custom field (e.g. a select list) has a value of Red,

THEN this function will return the text Color,

ELSE it will return No color.

Code Block

linenumbers	true

timePart({...currentDateTime}, LOCAL) > 21:00 AND timePart({...currentDateTime}, LOCAL) < 7:00 ? "Night" : "Day"

IF the current time is between 21:00 and 7:00

THEN this function will return the

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subtle	true
title	text

"Night" ,

ELSE it will return the

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subtle	true
title	text

"Day".

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Comparison operators

Logical operators

Conditional operator (IF - THEN -ELSE)