String Functions

Concat

Appends all the arguments end to end in a single string

concat(args...)

Example

concat('this ', 'is ', 'how ', 'it ', 'works')
> 'this is how it works'

Current User

Returns the username of the user running the query.

currentUser()

Example

currentUser()
> 'jbloggs'

Decode

The arguments are split into 3 parts

1. The input value to test
2. Pairs of regex matchers with their respective output value
3. A default result, if the input doesn’t match any of the regexes

decode(input, test1, result1, test2, result2, ... testN, resultN, otherwise)

It works much like a Java Switch/Case statement

Example

decode(${val}, 'red', 'rgb(255, 0, 0)', 'green', 'rgb(0, 255, 0)', 'blue', 'rgb(0, 0, 255)', 'rgb(255, 255, 255)')
${val}='blue'
> rgb(0, 0, 255)
${val}='green'
> rgb(0, 255, 0)
${val}='brown'
> rgb(255, 255, 255) // falls back to the 'otherwise' value

in Java, this would be equivalent to

String decode(value) {
    switch(value) {
        case "red":
            return "rgb(255, 0, 0)"
        case "green":
            return "rgb(0, 255, 0)"
        case "blue":
            return "rgb(0, 0, 255)"
        default:
            return "rgb(255, 255, 255)"
    }
}

decode('red')
> 'rgb(255, 0, 0)'

DecodeUrl

Decodes a URL

decodeUrl('userId%3Duser1')
> userId=user1

EncodeUrl

Encodes a URL

encodeUrl('userId=user1')
> userId%3Duser1

Exclude

If the supplied string matches one of the supplied match strings then return null, otherwise return the supplied string

exclude(aString, match...)

Example

exclude('hello', 'hello', 'hi')
> null
exclude('hi', 'hello', 'hi')
> null
exclude('bye', 'hello', 'hi')
> 'bye'

Hash

Cryptographically hashes a string

hash(value)
hash(value, algorithm)
hash(value, algorithm, salt)

Example

hash(${val}, 'SHA-512', 'mysalt')
> A hashed result...

If not specified the hash() function will use the SHA-256 algorithm. Supported algorithms are determined by Java runtime environment.

Include

If the supplied string matches one of the supplied match strings then return it, otherwise return null

include(aString, match...)

Example

include('hello', 'hello', 'hi')
> 'hello'
include('hi', 'hello', 'hi')
> 'hi'
include('bye', 'hello', 'hi')
> null

Index Of

Finds the first position of the second string within the first

indexOf(firstString, secondString)

Example

indexOf('aa-bb-cc', '-')
> 2

Last Index Of

Finds the last position of the second string within the first

lastIndexOf(firstString, secondString)

Example

lastIndexOf('aa-bb-cc', '-')
> 5

Lower Case

Converts the string to lower case

lowerCase(aString)

Example

lowerCase('Hello DeVeLoPER')
> 'hello developer'

Match

Test an input string using a regular expression to see if it matches

match(input, regex)

Example

match('this', 'this')
> true
match('this', 'that')
> false

Query Param

Returns the value of the requested query parameter.

queryParam(paramKey)

Examples

queryParam('user')
> 'jbloggs'

Query Params

Returns all query parameters as a space delimited string.

queryParams()

Examples

queryParams()
> 'user=jbloggs site=HQ'

Replace

Perform text replacement on an input string using a regular expression to match part (or all) of the input string and a replacement string to insert in place of the matched part

replace(input, regex, replacement)

Example

replace('this', 'is', 'at')
> 'that'

String Length

Takes the length of a string

stringLength(aString)

Example

stringLength('hello')
> 5

Substring

Take a substring based on start/end index of letters

substring(aString, startIndex, endIndex)

Example

substring('this', 1, 2)
> 'h'

Substring After

Get the substring from the first string that occurs after the presence of the second string

substringAfter(firstString, secondString)

Example

substringAfter('aa-bb', '-')
> 'bb'

Substring Before

Get the substring from the first string that occurs before the presence of the second string

substringBefore(firstString, secondString)

Example

substringBefore('aa-bb', '-')
> 'aa'

Upper Case

Converts the string to upper case

upperCase(aString)

Example

upperCase('Hello DeVeLoPER')
> 'HELLO DEVELOPER'